ORGANIZATIONAL MAINTENANCE MANUAL WITH REPAIR PARTS LIST FOR RIFLE, 7.62 MM, AK-47 (2009)

TM 8370-50007-IN/2

U.S. MARINE CORPS TECHNICAL MANUAL

ORGANIZATIONAL MAINTENANCE

MANUAL WITH REPAIR PARTS LIST

FOR

RIFLE, 7.62 MM, AK-47

NSN: 1005-LL-MUS-2940

P/N TBD

MARINE CORPS SYSTEMS COMMAND

QUANTICO, VA 22134-6050

DISTRIBUTION STATEMENT C: DISTRIBUTION AUTHORIZED TO U.S.

GOVERNMENT AGENCIES AND THEIR CONTRACTORS. THIS PUBLICATION IS

REQUIRED FOR ADMINISTRATION AND OPERATION PURPOSES. OTHER

REQUESTS FOR THIS DOCUMENT MUST BE REFERRED TO COMMANDER,

MARINE CORPS SYSTEMS COMMAND (PG-13, PM, IW), QUANTICO, VA 22134-6050.

DESTRUCTION NOTICE: DESTROY BY ANY METHOD THAT WILL PREVENT

DISCLOSURE OF CONTENTS OR RECONSTRUCTION OF THE DOCUMENTS.

FOR OFFICIAL USE ONLY

DECEMBER 2009

PCN 184 837001 00

DEPARTMENT OF THE NAVY

Headquarters, U.S. Marine Corps

Washington, DC 20380-0001

31 December 2009

1. This Technical Manual (TM), authenticated for Marine Corps use and effective upon receipt, provides

information on the Rifle, 7.62 mm, AK-47, NSN: 1005-LL-MUS-2940; TM 8370-50007-IN/2.

2. Submit notice of discrepancies or suggested changes on a NAVMC 10772. The NAVMC may be

submitted via the Internet using website https://pubs.ala.usmc.mil/front.htm, scrolling down to the NAVMC

10772 Tracking Program and following instructions provided. It may also be submitted by electronic mail to

mbmatcommarcorlogbases@logcom.usmc.mil, or by mailing a paper copy of NAVMC 10772 addressed to:

Commanding General, Marine Corps Systems Command, Attn: Assistant Commander Acquisition and

Logistics (LOG/TP), 814 Radford Blvd., Suite 20343, Albany, Georgia 31704-0343.

BY DIRECTION OF THE COMMANDANT OF THE MARINE CORPS

OFFICIAL:

MARK T. BRINKMAN

Program Manager, IW, PG-13

Marine Corps Systems Command

Quantico, Virginia

DISTRIBUTION: EDO

LIST OF EFFECTIVE PAGES/WORK PACKAGES

Date of issue for original manual is: 31 December 2009.

TOTAL NUMBER OF PAGES FOR FRONT AND REAR MATTER IS 18 AND TOTAL

NUMBER OF WORK PACKAGES IS 27 CONSISTING OF THE FOLLOWING:

Page/WP No.

Change No.

Page/WP No.

Change No.

Page/WP No.

Change No.

Front Cover

A through B

a through f

i through iv

Chp 1 Title Page

0001 00 (2 pgs.)

0002 00 (4 pgs.)

0003 00 (2 pgs.)

Chp 2 Title Page

0004 00 (2 pgs.)

0005 00 (2 pgs.)

0006 00 (14 pgs.)

Chp 3 Title Page

0007 00 (2 pgs.)

0008 00 (14 pgs.)

0009 00 (4 pgs.)

0010 00 (2 pgs.)

0011 00 (4 pgs.)

0012 00 (6 pgs.)

0013 00 (28 pgs.)

0014 00 (2 pgs.)

0015 00 (4 pgs.)

0016 00 (2 pgs)

0017 00 (4 pgs.)

0018 00 (2 pgs.)

0019 00 (2 pgs.)

0020 00 (2 pgs.)

0021 00 (8 pgs.)

Chp 4 Title Page

0022 00 (2 pgs.)

Chp 5 Title Page

0023 00 (2 pgs.)

0024 00 (2 pgs.)

0025 00 (4 pgs.)

0026 00 (4 pgs.)

0027 00 (12 pgs.)

Index (2 pgs.)

A/B blank

TM 8370-50007-IN/2

WARNING SUMMARY

This warning summary contains safety warnings that must be understood and applied during operation and

maintenance of this equipment. Failure to observe these precautions could result in serious injury or death to

personnel.

WARNING

When using carbon removing compound, avoid skin contact. Using gloves

and protective equipment is required. If carbon removing compound comes

in contact with skin, wash thoroughly with running water. If possible, use a

lanolin-based cream after exposure to compound. Failure to follow these

warnings may cause injury or death to personnel.

WARNING

Ensure that the weapon is unloaded and that the selector lever is set on SAFE

before performing the following procedures. Do not keep live ammunition

near the work area. Failure to follow these warnings may cause injury or

death to personnel.

WARNING

Before starting an inspection, be sure to clear the weapon. Do not pull the

trigger until the weapon has been cleared. Inspect the chamber to ensure that

it is empty and no ammunition is in position to be chambered. DO NOT keep

live ammunition in the work area. Failure to follow these warnings may

cause injury or death to personnel.

WARNING

Ensure the weapon is clear prior to performing the following function

checks. If the weapon fails any of the following function checks, attempt to

repair it. If the weapon is beyond repair, replace it. Failure to follow these

warnings may cause injury or death to personnel.

TM 8370-50007-IN/2

WARNING

Dry cleaning solvent is flammable and toxic and should be used in a

well-ventilated area. The use of rubber gloves is necessary to protect the skin

when washing weapon parts. Failure to follow this warning may cause injury

or death to personnel.

WARNING

During general maintenance, DO NOT interchange bolt assemblies from one

weapon to another without checking for the proper headspace. Refer to WP

0021 00. Failure to follow this warning may cause injury or death to

personnel.

WARNING

Use only cleaner, lubricant, and preservative

(CLP) for cleaning and

lubrication of the AK-47 rifle in all but the most severe conditions.

Improper cleaning methods and use of unauthorized cleaning solvents may

injure personnel and damage equipment. Refer to TM 9-247_, Materials

Used for Cleaning, Preserving, Abrading, and Cementing Ordnance

Materials and Related Materials Including Chemicals for correct

information.

Cloths or rags saturated with solvent cleaning compound must be disposed of

in accordance with authorized facilities’ procedures. Failure to follow these

warnings may result in injury or death to personnel.

WARNING

Eye shields must be worn when cleaning with a wire brush. Flying rust and

metal particles may cause injury to personnel.

TM 8370-50007-IN/2

WARNING

Particles blown by compressed air are hazardous. Use a maximum of 30 psi

when cleaning components. DO NOT exceed 15 psi nozzle pressure when

drying parts with compressed air. Failure to follow these warnings may result

in injury or death to personnel.

WARNING

DO NOT direct compressed air against human skin. Make sure air stream is

directed away from the user and other personnel in the area. To prevent

injury, the user must wear protective goggles or a face shield. Failure to

follow these warnings may result in injury or death to personnel.

WARNING

Always assume that every weapon is loaded until it is determined through

visual and physical inspection that it is not. Procedures for clearing and

unloading the weapon are outlined in TM 8370-50007-OR/1. Failure to

follow this warning may cause injury or death to personnel.

WARNING

DO NOT interchange bolt assemblies from one weapon to another without

checking for the proper headspace. Failure to follow this warning may cause

injury or death to personnel.

WARNING

The grooved extractor retaining pin and extractor are under spring tension.

TM 8370-50007-IN/2

WARNING

If the bolt is replaced, perform head space gaging. Refer to WP 0021 00.

WARNING

The auto sear is under spring tension. Use care when removing or installing

the auto sear.

After pushing down the lever of the auto sear, the hammer will be under

spring tension. Pulling the trigger will release the hammer and it will fall

forward with force.

WARNING

The hammer spring is under spring tension and the ends may be sharp

enough to puncture the skin.

WARNING

The elevation slide assembly is under spring tension. Use care when working

on spring-loaded parts.

WARNING

The buttplate and trapdoor are under spring tension. Use care when removing

the trap door and buttplate.

TM 8370-50007-IN/2

WARNING

The trap door is under spring tension. Use care when installing the trap door

and buttplate.

WARNING

Ensure the weapon is clear prior to performing the following function

checks. If the weapon fails any of the following function check, attempt to

repair it. If the weapon is beyond repair, replace it.

WARNING

Before stowing a weapon, be sure to clear the weapon

(TM-8370-50007-OR/1). Inspect the chamber to ensure it is empty and that

no ammunition is in position to be chambered. Failure to follow this warning

may cause injury or death to personnel.

WARNING

DO NOT store the weapon with live ammunition in either the chamber or

magazine. Always assume that every weapon is loaded until it is determined

through visual and physical inspection that it is not. Procedures for clearing

and unloading the weapon are outlined in TM 8370-50007-OR/1. Failure to

follow these warnings may cause injury or death to personnel.

WARNING

DO NOT keep live ammunition near the work area. Failure to follow this

warning may cause injury or death to personnel.

TM 8370-50007-IN/2

CAUTION SUMMARY

CAUTION

DO NOT use a wire brush to roughen the surfaces. Use a well-ventilated area

during cleaning and the application of solid film lubricant (SFL). If SFL

comes in contact with moving parts or functioning surfaces of the weapon,

remove the SFL immediately by washing the area with dry cleaning solvent.

CAUTION

Do not mix multiple lubricants on the same weapon. The weapon must be

cleaned thoroughly when changing from one lubricant to another. Dry

cleaning solvent (SD) is recommended for removing the old lubricant before

changing to another lubricant.

CAUTION

Ensure the groove in the grooved extractor retaining pin is aligned with the

firing pin retaining pin hole BEFORE inserting the firing pin retaining pin.

Failure to do so may cause the firing pin retaining pin to lodge in the bolt

permanently.

CAUTION

Letting the hammer fall uncontrolled will damage the weapon. Ensure to

place a finger over the hammer before pulling the trigger in order to ride the

hammer forward.

CAUTION

Ensure that all retaining pins are fully seated in the receiver and that the long

leg of the auto sear is properly installed into the retaining grooves in the

heads of the retaining pins.

CAUTION

The C-clip can break and deform during installation. If the C-clip becomes

bent or deformed, it should be replaced. Ensure that the open end of the

C-clip is facing towards the muzzle.

CAUTION

Letting the hammer fall uncontrolled will damage the weapon. Ensure to

place fingers over the hammer before pulling the trigger in order to ride the

hammer forward.

CAUTION

Only moderate pressure is necessary to remove the retaining pins from the

receiver. If the retaining pins are difficult to remove, check to ensure that the

grooves near the end of the retaining pins are not caught on the receiver wall.

CAUTION

When pushing the bolt closed during headspace gaging, be sure to use

LIGHT pressure. Failure to do so may damage the weapon.

TECHNICAL MANUAL

MARINE CORPS SYSTEMS COMMAND

TM 8370-50007-IN/2

Quantico, VA, DECEMBER 2009

U.S. MARINE CORPS TECHNICAL MANUAL

ORGANIZATIONAL MAINTENANCE MANUAL

WITH REPAIR PARTS LIST

FOR

RIFLE, 7.62 MM, AK-47

NSN: 1005-LL-MUS-2940

P/N TBD

DISTRIBUTION STATEMENT C: DISTRIBUTION AUTHORIZED TO U.S. GOVERNMENT AGENCIES

AND THEIR CONTRACTORS. THIS PUBLICATION IS REQUIRED FOR ADMINISTRATION AND

OPERATION PURPOSES. OTHER REQUESTS FOR THIS DOCUMENT MUST BE REFERRED TO

COMMANDER, MARINE CORPS SYSTEMS COMMAND (PG-13, PM, IW), QUANTICO, VA 22134-6050.

DESTRUCTION NOTICE: DESTROY BY ANY METHOD THAT WILL PREVENT DISCLOSURE OF

CONTENTS OR RECONSTRUCTION OF THE DOCUMENTS.

WP/Page Number

List of Effective Pages/Work Packages

Warning Summary

Caution Summary

How to Use This Manual

iii

CHAPTER 1 - GENERAL INFORMATION, EQUIPMENT DESCRIPTION AND DATA, AND

PRINCIPLES OF OPERATION

General Information

0001 00-1

Equipment Description and Data

0002 00-1

Principles of Operation

0003 00-1

CHAPTER 2 - TROUBLESHOOTING

Troubleshooting Introduction

0004 00-1

Troubleshooting Symptom Index

0005 00-1

Troubleshooting Procedures

0006 00-1

CHAPTER 3 - ORGANIZATIONAL MAINTENANCE

Service Upon Receipt

0007 00-1

Preventive Maintenance Checks and Services (PMCS), Including Lubrication Instructions

0008 00-1

General Maintenance Instructions

0009 00-1

Disassembly of Weapon

0010 00-1

Bolt Carrier Assembly and Bolt Assembly

0011 00-1

Bolt Assembly

0012 00-1

Receiver Assembly

0013 00-1

Rear Sight Assembly

0014 00-1

Fixed Buttstock Assembly

0015 00-1

Reassembly of Weapon

0016 00-1

Function Check

0017 00-1

Stowage

0018 00-1

Preparation for Storage and Shipment

0019 00-1

Final Inspection and Function Test

0020 00-1

Gaging Procedures

0021 00-1

TM 8370-50007-IN/2

HOW TO USE THIS MANUAL

INTRODUCTION

1. This manual contains operating instructions, maintenance procedures, and troubleshooting procedures for

the rifle, 7.62 mm, AK-47. It is divided into five chapters.

2. This manual is written in work package format:

a. Chapters divide the manual into major categories of information (e.g.., General Information,

Equipment Description and Data, and Principles of Operation).

b. Each chapter is divided into work packages, which are identified by a 6-digit number (e.g., 0001 00,

0002 00) located at the upper right-hand corner of each page. The work package page number (e.g.,

0001 00-1, 0001 00-2) is centered at the bottom of each page.

c. If a change package is issued to this manual, added work packages will use the 5th and 6th digits of

their numbers to indicate new material. For instance, work packages inserted between WP 0001 00

and WP 0002 00 are numbered WP 0001 01, WP 0001 02.

3. This manual should be read from beginning to end to become familiar with its organization and contents

before you attempt to operate or maintain the equipment.

CONTENTS OF THIS MANUAL

A Warning Summary and a Caution Summary are located at the beginning of this manual. Become

familiar with these warnings and cautions before operating or maintaining the equipment.

A Table of Contents, located in the front of this manual, lists all chapters and work packages in the

publication. If you cannot find what you are looking for in the Table of Contents, refer to the alphabetical

Index at the back of the manual.

Chapter 1, General Information, Equipment Description and Data, and Principles of Operation, provides

general information about the equipment, identifies the major components and systems, and describes

how the components and systems work.

Chapter 2, Troubleshooting, provides symptoms and procedures pertaining to failures that could occur

during operation of the AK-47.

Chapter 3, Organizational Maintenance, which includes Preventive Maintenance Checks and Services

(PMCS), and General Maintenance Instructions, provide procedures to maintain the AK-47 at the

organizational level.

Chapter 4, Auxiliary Equipment, which includes information on the equipment used with the AK-47 rifle.

Chapter 5, Supporting Information, provides information pertaining to references, components listing, and

an expendable and durable items list.

An alphabetical Index is located at the back of this manual.

iii

TM 8370-50007-IN/2

FEATURES OF THIS MANUAL

This manual contains information on operating and maintaining the AK-47.

WARNINGs, CAUTIONs, NOTEs, subject headings, and other important information are highlighted in

BOLD print as a visual aid.

WARNING

A WARNING indicates a hazard which may result in injury or death to

personnel.

CAUTION

A CAUTION is a reminder of safety practices or directs attention to usage

practices that may result in damage to equipment.

NOTE

A NOTE is a statement containing information that will make the procedures

easier to perform.

Statements and words of particular interest may be printed in CAPITAL LETTERS to create emphasis.

Within a procedural step, reference may be made to another chapter or work package in this manual or to

another manual. These references indicate where you should look for more complete information. If you

are told: “Attach the bore brush to the end of the flexible rod (WP 0014 00)”, go to WP 0014 00 in this

manual for instructions.

Illustrations are placed after, and as close to, the procedural steps to which they apply. Callouts placed on

art are text or numbers.

END OF WORK PACKAGE

TM 8370-50007-IN/2

0001 00

GENERAL INFORMATION

SCOPE

1. Type of Manual. Organizational Maintenance Manual for the AK-47 rifle. The basic operator’s

procedures are outlined in TM 8370-50007-OR/1, Operator’s Manual with Components List for Rifle,

7.62 mm, AK-47.

2. Equipment Name and Model Number. AK-47 rifle (NSN: 1005-LL-MUS-2940).

3. Purpose of Equipment. To provide personnel with the offensive and defensive capability to engage

targets with small arms fire.

MAINTENANCE FORMS, RECORDS, AND REPORTS

The Marine Corps forms and procedures used for equipment maintenance will be those prescribed by the

current edition of TM 4700-15/1_, Ground Equipment Record Procedures.

CORROSION PREVENTION AND CONTROL

Corrosion prevention on any piece of equipment is important and it is critically important for the safe

functioning of a weapons system. Carry out corrosion prevention and control (CPC) in accordance with

TM 4795-12/1_, Organizational Corrosion Prevention and Control Procedures for USMC Equipment.

While corrosion is typically associated with the rusting of metals, it can also include the deterioration of other

materials such as rubber, wood, and plastic. Unusual cracking, softening, swelling, or breaking of these

materials may be a corrosion problem.

DESTRUCTION INSTRUCTION TO PREVENT ENEMY USE

Follow the procedures in TM 750-244-7, Procedures for Destruction of Equipment, for the destruction of the

AK-47 rifle and its variants to prevent enemy use.

PREPARATION FOR STORAGE AND SHIPMENT

1. Follow the procedures outlined in MCO P4450.7, Preparation for Storage. Prior to storing or shipping,

ensure that the weapon is thoroughly cleaned as outlined in WP 0009 00.

2. Storage Procedures.

a. Ensure that the chamber and magazine are void of live ammunition.

b. Inspect the chamber and bore while applying a medium coat of cleaner, lubricant, and preservative

(CLP).

c. Apply a light coat of CLP over all the weapon’s metal surfaces to provide corrosion protection and

extra lubrication. Ensure that the CLP does not come into contact with any optical devices including

telescopic sight pieces.

QUALITY OF MATERIAL

All material used to repair, replace, or modify the weapon must meet the requirements of this manual. If the

quality of material requirements is not stated in this manual, the material must meet the requirements of the

drawings, standards, specifications, or approved engineering change proposals applicable to the subject

equipment.

0001 00-1

TM 8370-50007-IN/2

0001 00

SAFETY, CARE, AND HANDLING

Read the Warning Summary and Caution Summary at the front of this manual and pay close attention to the

warnings and cautions that appear where special care and attention are required. For ammunition care and

handling, refer to PAM 385-64, Ammunition and Explosives Safety Standards.

LIST OF ABBREVIATIONS/ACRONYMS

Abbreviation/Acronym

Definition

Bale

Book

Bottle

CAGEC

Commercial and Government Entity Code

CLP

Cleaner, Lubricant, and Preservative

CPC

Corrosion Prevention and Control

Dozen

Each

fps

Feet per Second

Inch

LAW

Lubricant, Arctic, Weapons

LSA

Lubricant, Semi-Fluid, Automatic Weapons

Meter

Milliliter

Millimeter

N/A

Not Applicable

NSN

National Stock Number

pkg

Package

PMCS

Preventive Maintenance Checks and Services

psi

Pounds per Square Inch

Pint

rds/min

Rounds per Minute

ROD

Report of Discrepancy

RPL

Repair Parts List

Dry Cleaning Solvent

SFL

Solid Film Lubricant

SMR

Source, Maintenance and Recoverability

SSRI

Supply System Responsibility Items

U/M

Unit of Measure

VCI

Volatile Corrosion Inhibitor

END OF WORK PACKAGE

0001 00-2

TM 8370-50007-IN/2

0002 00

EQUIPMENT DESCRIPTION AND DATA

DESCRIPTION

1. General. The AK-47 rifle is a 7.62 x 39 mm, lightweight, air-cooled, gas-operated, magazine-fed,

shoulder-fired weapon which can be selectively fired on the semi-automatic or full automatic settings.

2. Capabilities. Provides personnel the offensive and defensive capability to engage targets with direct

small arms fire.

3. Differences Between Models. The AK-47 rifle can have a fixed or threaded muzzle and it can have a

fixed or folding buttstock. The handguards and buttstock can be made of wood, metal, or plastic. The

country of origin can be identified by the selector markings or manufacturer's markings on the right side

of the receiver. Refer to Tables 2 and 3.

4. Left Side. The left side view of the weapon displays the muzzle, barrel, gas tube, top cover, magazine

release, and pistol grip. Refer to Figure 1.

Figure 1. Left Side of the AK-47 Rifle.

5. Right Side. The right side view of the weapon displays the buttstock, guide rod spring lock, trigger,

selector lever, charging handle, rear sight, front sight, sling, and bayonet. Refer to Figure 2.

Figure 2. Right Side of the AK-47 Rifle.

0002 00-1

TM 8370-50007-IN/2

0002 00

LOCATION AND DESCRIPTION OF MAJOR COMPONENTS

Refer to Figure 3.

1. Receiver and Barrel Assembly. The receiver and barrel assembly includes the front sight assembly, gas

block, gas tube, upper and lower handguards, rear sight assembly, auto sear, auto sear spring, hammer

assembly, magazine release, selector lever, trigger assembly, pistol grip, and buttstock.

2. Top Cover. The top cover covers and protects the mechanisms housed in the receiver.

3. Recoil Spring and Guide Rod Assembly. The recoil spring and guide rod assembly returns the bolt

carrier group to the locked position during the counter-recoil cycle.

4. Bolt Carrier Assembly and Bolt Assembly. The bolt carrier assembly includes the charging handle, gas

piston, bolt carrier, and houses the bolt assembly, which includes the bolt, grooved extractor retaining pin,

extractor, extractor spring, firing pin retaining pin, and firing pin. It carries out the cycle of operation.

5. Magazine. The magazine can be metal or plastic, can hold 30 rounds, and is attached to the receiver

through the magazine well. It is held in place by the magazine catch. The forward motion of the bolt

carrier assembly strips the cartridge from the magazine and feeds it into the chamber.

6. Cleaning Rod. The cleaning rod is used to conduct preventive maintenance.

Figure 3. The AK-47 Disassembled.

0002 00-2

TM 8370-50007-IN/2

0002 00

EQUIPMENT DATA

Table 1. AK-47 Rifle Equipment Data.

AK-47 Rifle Equipment Data

Caliber:

7.62 x 39 mm

Total Weight:

Weapon (empty)

Approx. 9.48 lbs.

Length:

Fixed Buttstock/Buttstock-Extended

Approx. 34.2 inches

Buttstock Folded

Approx. 27.5 inches

Rifling:

4 grooves, right-hand twist

1 turn in 12 inches

Sights:

Front

Adjustable sight post for elevation

Adjustable windage drum for windage

Rear

Leaf sight for elevation

Magazine Capacity:

30 rounds

Modes of Fire:

Semi-automatic

Fully automatic

Maximum Effective Range:

Semi-automatic

Approx. 400 m

Rate of Fire (cyclic):

Approx. 800 rds/min

Muzzle Velocity:

Approx. 2346 fps

Table 2. Selector Lever Markings.

Upper or Full Auto Symbol

Lower or Semi Auto Symbol

Producer

Bulgaria

China/PRC

Czechoslovakia

East Germany

Egypt

Finland

Hungary

Iran

Iraq

North Korea

Poland

Romania

AB or AV

OA or O

Russia

Yugoslavia

0002 00-3

TM 8370-50007-IN/2

0002 00

Table 3. Manufacturer’s Markings.

Marking

Producer

Marking

Producer

Marking

Producer

Bulgaria

East Germany

Russia

(Suhl Factory)

(Izhevsk

Factory)

Bulgaria

East Germany

(Ernst

Thaelmann

Factory)

Bulgaria

Egypt

China/PRC

Iraq

(Polytec)

China/PRC

North Korea

China/PRC

Poland

China/PRC

Romania

China/PRC

Russia

China/PRC

Russia (Izhevsk

(Norinco)

Factory)

China/PRC

Russia (Polyany

Arsenal)

East Germany

Russia (Tula

Arsenal)

East Germany

Russia (Tula

Arsenal)

END OF WORK PACKAGE

0002 00-4

TM 8370-50007-IN/2

0003 00

PRINCIPLES OF OPERATION

GENERAL

The 7.62 x 39 mm AK-47 rifle:

1. Is gas-operated.

2. Fires in either the semi-automatic (SEMI) or fully automatic (AUTO) mode.

3. Has positive locking of the bolt. The firing pin is part of the bolt assembly and cannot strike the primer

until the bolt assembly is fully locked.

CYCLE OF OPERATION

The cycle of operation is similar in all small arms. Knowledge of what happens during the cycle of operation

will help both the operator and the maintainer understand the cause of and remedy for various stoppages.

NOTE

The cycle of operation begins at any of the following eight steps.

Eight Steps. The cycle of operation contains eight steps:

a. Feeding

b. Chambering

c. Locking

d. Firing

e. Unlocking

Extracting

g. Ejecting

h. Cocking.

Description of Eight Steps. The eight steps of the cycle of operation are explained below, along with a

brief description of what occurs inside the rifle during each step. Assume that a full magazine is loaded

into the weapon.

a. Feeding. The magazine follower, under spring tension, feeds the top cartridge into the path of the

bolt. As the bolt, held in the bolt carrier, is pushed forward by the recoil spring, the bottom of the bolt

passes over the lips of the magazine, strips the top cartridge from the magazine, and pushes it into the

chamber.

b. Chambering. Chambering is complete when the cartridge is fully seated in the chamber and the

extractor is engaged in the extraction groove at the base of the cartridge.

Dirt or debris inside the chamber, or bent, dented, or otherwise faulty ammunition can prevent a

cartridge from fully chambering or extracting.

0003 00-1

TM 8370-50007-IN/2

0003 00

Locking. The face of the bolt strikes the rear extension of the barrel and its forward movement is

stopped. As the bolt carrier continues forward, the cam recess in the bolt carrier acts on the cam on

the bolt causing the bolt to rotate. As the bolt rotates, the locking lugs on the head of the bolt engage

the locking recesses in the receiver. Locking is then complete.

Firing. When the trigger is pulled, the trigger hook(s) disengage from the hammer. The tension of the

hammer spring pushes the hammer to rotate up and forward until it strikes the rear of the firing pin.

The firing pin is pushed forward through the face of the bolt and strikes the primer of the round,

which ignites the propellant in the cartridge. The expanding gases resulting from this explosion propel

the bullet forward through the barrel.

Unlocking. As the round passes through the barrel and past the gas block, some of the gas (under

high pressure) expands into the gas tube. This gas pushes the gas piston, which is attached to the bolt

carrier, to the rear. As the bolt carrier is pushed to the rear, the cam recess in the bolt carrier acts on

the cam on the bolt, causing the bolt to rotate. As the bolt rotates, the locking lugs on the head of the

bolt disengage from the locking recesses in the receiver. Unlocking is then complete.

Extracting. The bolt carrier, holding the bolt, continues to move to the rear under pressure from the

expanding gas. As the bolt moves to the rear, the bolt extractor holds the base of the cartridge against

the bolt face. Extraction is complete when the front of the empty cartridge case clears the rear of the

chamber.

Ejecting. As the bolt moves to the rear, the empty cartridge case is held by the extractor. The base of

the cartridge strikes the fixed ejector located on the interior of the receiver. The extractor serves as a

pivot point for the cartridge, which is deflected out of the ejection opening of the receiver.

Cocking. As the bolt moves to the rear, the bottom of the bolt carrier rides over the hammer. This

forces the hammer to rotate down and to the rear until it is engaged by the disconnector (if firing on

SEMI) or auto sear (if firing on AUTO). When the trigger is released, the trigger hooks engage the

hammer, holding it down and to the rear.

END OF WORK PACKAGE

0003 00-2

TM 8370-50007-IN/2

0004 00

TROUBLESHOOTING INTRODUCTION

GENERAL

This section contains troubleshooting information for locating and correcting malfunctions that may occur

with the AK-47 rifle.

The Troubleshooting Symptom Index (WP 0005 00) is a quick reference aid in troubleshooting the weapon.

Table 1 in Troubleshooting Procedures (WP 0006 00) lists possible malfunctions, tests, or inspections, and

corrective actions taken for troubleshooting the AK-47 rifle at the organizational level. Perform the tests,

inspections, and corrective actions in the order shown in the table, except when the malfunction and cause are

obvious. This manual cannot list all of the possible malfunctions, tests or inspections, and corrective actions

of the AK-47 rifle.

END OF WORK PACKAGE

0004 00-1/2 blank

TM 8370-50007-IN/2

0005 00

TROUBLESHOOTING SYMPTOM INDEX

INTRODUCTION

Refer to Table 1 in Troubleshooting Procedures (WP 0006 00) for malfunctions, tests or inspections, and

corrective actions. The symptom index below is a quick reference of the malfunctions that are covered in the

table.

Malfunction/Symptom

Troubleshooting Procedure Page

1. Failure of Magazine to Lock in Weapon

0006 00-1

2. Failure to Feed

0006 00-2

3. Failure to Chamber

0006 00-2

4. Failure to Lock

0006 00-3

5. Failure to Fire

0006 00-6

6. Failure to Unlock

0006 00-7

7. Failure to Extract

0006 00-8

8. Failure to Eject

0006 00-8

9. Failure to Cock

0006 00-9

10. Short Recoil

0006 00-10

11. Rifle Cannot be Zeroed

0006 00-11

12. Failure to Cycle with Selector Lever on AUTO

0006 00-12

13. Weapon Fires with Selector Lever on SAFE or when Trigger is Released with

Selector Lever on SEMI

0006 00-12

14. Auto Sear Pin “Walks”

0006 00-13

15. Hammer Pin “Walks”

0006 00-13

16. Trigger Pin “Walks”

0006 00-14

17. Runaway Gun

0006 00-14

END OF WORK PACKAGE

0005 00-1/2 blank

TM 8370-50007-IN/2

0006 00

TROUBLESHOOTING PROCEDURES

GENERAL

Table 1 lists possible malfunctions, tests or inspections, and corrective actions to be taken for troubleshooting

the AK-47 rifle. All malfunctions are at the organizational level.

Table 1. Troubleshooting Procedures.

Malfunction

Test or Inspection

Corrective Action

1. Failure of magazine to lock

a. Defective magazine.

Replace the magazine.

in the weapon.

b. Magazine release is dirty,

Clean the magazine release. Attempt

corroded, or has no spring

to repair the magazine release or

tension. Refer to Figure 1.

replace the weapon.

c. Bent magazine well.

Replace the weapon.

Figure 1. Magazine Release.

0006 00-1

TM 8370-50007-IN/2

0006 00

Table 1. Troubleshooting Procedures - Continued.

Malfunction

Test or Inspection

Corrective Action

2. Failure to feed.

a. Dirty or corroded magazine.

Disassemble and clean the

magazine. Refer to

TM 8370-50007-OR//1.

b. Short recoil.

Refer to Short Recoil in this table

(# 10).

3. Failure to chamber.

a. Weak, deformed, or broken

Replace the recoil spring and guide

recoil spring and guide rod

rod assembly. Refer to WP 0010 00.

assembly. Refer to Figure 2.

b. Short recoil.

Refer to Short Recoil in this table

(# 10).

Figure 2. Recoil Spring and Guide Rod Assembly.

0006 00-2

TM 8370-50007-IN/2

0006 00

Table 1. Troubleshooting Procedures - Continued.

Malfunction

Test or Inspection

Corrective Action

4. Failure to lock.

a. Chamber is dirty, burred, or

Clean the chamber. Remove any

has an obstruction.

burrs. Remove the obstruction.

b. Burred, dirty, or damaged bolt.

Clean the bolt. Remove any burrs.

Refer to Figure 3.

Replace the bolt if necessary. Refer

to WP 0012 00.

Figure 3. Opposite Views of the Bolt.

c. Improperly assembled

Assemble the extractor assembly

extractor assembly. Refer to

correctly. Refer to WP 0012 00.

Figure 4.

Figure 4. Extractor Assembly.

0006 00-3

TM 8370-50007-IN/2

0006 00

Table 1. Troubleshooting Procedures - Continued.

Malfunction

Test or Inspection

Corrective Action

4. Failure to lock - Cont.

d. Defective gas tube. Refer to

Replace the gas tube. Refer to

Figure 5.

WP 0010 00.

NOTE

Pits or holes in the gas tube may be caused by ammunition which is

corrosive due to old age or poor manufacture.

Figure 5. Gas Tube in Handguard.

e. Weak or broken recoil spring

Replace the recoil spring and guide

and guide rod assembly.

rod assembly. Refer to WP 0010 00.

Refer to Figure 6.

Figure 6. Recoil Spring.

0006 00-4

TM 8370-50007-IN/2

0006 00

Table 1. Troubleshooting Procedures - Continued.

Malfunction

Test or Inspection

Corrective Action

5. Failure to fire.

a. Carbon buildup in bolt

Disassemble and clean the bolt

assembly.

assembly. Refer to WP 0012 00.

b. Firing pin retaining pin

Correctly install the firing pin

incorrectly installed.

retaining pin. Refer to WP 0012 00.

c. Broken, defective, or missing

Replace the firing pin retaining pin.

firing pin retaining pin. Refer

Refer to WP 0012 00.

to Figure 8.

Figure 8. Firing Pin Retaining Pin.

d. The firing pin is incorrectly

Correctly install the firing pin. Refer

installed.

to WP 0012 00.

e. Broken or chipped firing pin.

Replace the firing pin. Refer to

Refer to Figure 9.

WP 0012 00.

Figure 9. Firing Pin.

0006 00-6

TM 8370-50007-IN/2

0006 00

Table 1. Troubleshooting Procedures - Continued.

Malfunction

Test or Inspection

Corrective Action

Failure to fire - Cont.

Improperly assembled

Assemble the weapon correctly.

weapon.

Refer to TM 8370-50007-OR/1,

WP 0011 00, WP 0012 00, and

WP 0013 00.

g. Broken hammer or hammer

Replace the hammer or hammer

spring.

spring. Refer to WP 0013 00.

h. Hammer/trigger improperly

Assemble the hammer/trigger

assembled.

correctly. Refer to WP 0013 00.

Hammer spring improperly

Install the hammer spring correctly.

installed.

Refer to WP 0013 00.

Failure to unlock.

a. Burred bolt assembly.

Remove burrs or replace the bolt

assembly. Refer to WP 0012 00.

b. Burred bolt carrier assembly

Remove burrs or replace the bolt

(gas piston and bolt carrier).

carrier assembly. Refer to

Refer to Figure 10.

WP 0011 00.

Figure10. Bolt Carrier Assembly.

0006 00-7

TM 8370-50007-IN/2

0006 00

Table 1. Troubleshooting Procedures - Continued.

Malfunction

Test or Inspection

Corrective Action

7. Failure to extract.

a. Defective extractor retaining

Replace the extractor retaining pin,

pin, extractor, and/or extractor

extractor, and/or extractor spring.

spring. Refer to Figure 11.

Refer to WP 0012 00.

b. A cartridge is lodged in the

Remove the cartridge. Check the

barrel due to bad ammunition

quality of ammunition. Gage the

or barrel erosion.

barrel to check for erosion. Replace

the weapon if necessary. Refer to

WP 0021 00

c. Short recoil.

Refer to Short Recoil in this table

(# 10).

Figure 11. Extractor Spring, Extractor Retaining Pin, and Extractor.

8. Failure to eject.

a. Defective cartridge ejector.

Attempt to repair. Replace the

Refer to Figure 12.

weapon if necessary.

b. Short recoil.

Refer to Short Recoil in this table

(# 10).

Figure 12. Ejector.

0006 00-8

TM 8370-50007-IN/2

0006 00

Table 1. Troubleshooting Procedures - Continued.

Malfunction

Test or Inspection

Corrective Action

9. Failure to cock.

a. Short recoil.

Refer to Short Recoil in this table

(# 10).

b. Worn or broken hammer

Replace hammer spring. Refer to

spring. Refer to Figure 13.

WP 0013 00.

c. Worn or broken trigger.

Replace the trigger. Refer to

WP 0013 00.

d. Worn or broken hammer.

Replace the hammer. Refer to

WP 0013 00.

Figure 13. Trigger, Hammer. and Hammer Spring.

0006 00-9

TM 8370-50007-IN/2

0006 00

Table 1. Troubleshooting Procedures - Continued.

Malfunction

Test or Inspection

Corrective Action

10. Short recoil.

a. Defective recoil spring and

Replace recoil spring and guide rod

guide rod assembly.

assembly. Refer to WP 0010 00.

b. Dirty gas block, gas tube,

Clean and lubricate with CLP. Refer

recoil spring and guide rod

to WP 0010 00 and WP 0013 00.

assembly, or bolt carrier

assembly (gas piston and bolt

carrier).

c. Excessive gas leakage

Replace the gas tube. If the gas

caused by defective gas tube

block is defective, replace the

or gas block. Pitting due to

weapon. Refer to

use of corrosive ammunition

TM 8370-50047-OR/1.

d. Weak or broken gas piston.

Replace the bolt carrier assembly.

Refer to WP 0010 00.

e. Gas selector is in the wrong

Rotate the gas selector. Refer to

position.

WP 0013 00.

WARNING

When using carbon removing compound, wearing gloves and

protective equipment is required. Avoid contact with skin. If

carbon removing compound comes in contact with skin, wash

thoroughly with running water, and apply a lanolin-based

cream, if possible. Failure to follow this warning may cause

injury or death to personnel.

Carbon build-up in barrel/gas

Remove carbon build-up by soaking

block.

the barrel in carbon removing

compound.

Figure 14. Gas Block.

0006 00-10

TM 8370-50007-IN/2

0006 00

Table 1. Troubleshooting Procedures - Continued.

Malfunction

Test or Inspection

Corrective Action

11. Rifle cannot be zeroed.

a. Defective front sight post.

Remove the front sight post. If

Refer to Figure 15.

damaged, replace. Refer to

WP 0013 00.

Figure 15. Front Sight Assembly.

b. Defective or bent barrel.

Replace weapon.

c. For elevation: defective rear

Repair the rear sight as required.

sight. Refer to Figure 16.

Refer to WP 0013 00.

d. For elevation: improperly

Properly assemble the rear sight.

assembled rear sight. Refer to

Refer to WP 0013 00 and

Figure 16.

WP 0014 00.

Figure 16. Rear Sight Assembly.

0006 00-11

TM 8370-50007-IN/2

0006 00

Table 1. Troubleshooting Procedures - Continued.

Malfunction

Test or Inspection

Corrective Action

12. Failure to cycle with selector

a. Broken or worn auto sear or

Replace the auto sear or auto sear

lever on AUTO.

auto sear spring. Refer to

spring. Refer to WP 0013 00.

Figure 17.

Figure 17. Auto Sear and Auto Sear Spring.

b. Defective selector lever. Refer

Replace the selector lever. Refer to

to Figure 18.

WP 0013 00.

c. Short recoil.

Refer to Short Recoil in this table

(# 10).

13. Weapon fires with selector

a. Defective selector lever. Refer

Replace the selector lever. Refer to

lever on SAFE or when

to Figure 18.

WP 0013 00.

trigger is released with

b. Worn or broken trigger.

Replace the trigger. Refer to

selector lever on SEMI.

WP 0013 00.

Figure 18. Selector Lever.

0006 00-12

TM 8370-50007-IN/2

0006 00

Table 1. Troubleshooting Procedures - Continued.

Malfunction

Test or Inspection

Corrective Action

14. Auto sear retaining pin

a. Worn or broken auto sear

Replace the auto sear retaining pin

“walks” or works loose

retaining pin or auto sear

or the auto sear spring. Refer to

during firing, or auto sear

spring. Refer to Figure 19.

WP 0013 00.

retaining pin is very easy to

b. Long leg of auto sear spring set

Install the long leg of the auto sear

push out of receiver.

incorrectly into groove in the

spring correctly. Refer to

auto sear retaining groove.

WP 0013 00.

Figure 19. Auto Sear Retaining Pin and Auto Sear Spring.

15. Hammer retaining pin

a. Worn or broken hammer

Replace the hammer retaining pin or

“walks” or works loose

retaining pin or auto sear

auto sear spring. Refer to

during firing, or hammer

spring. Refer to Figure 20.

WP 0013 00.

retaining pin is very easy to

b. Long leg of auto sear spring

Install the long leg of the auto sear

push out of receiver.

set incorrectly into hammer

spring correctly. Refer to WP 0013 00.

retaining pin groove.

Figure 20. Hammer Retaining Pin and Auto Sear Spring.

0006 00-13

TM 8370-50007-IN/2

0006 00

Table 1. Troubleshooting Procedures - Continued.

Malfunction

Test or Inspection

Corrective Action

16. Trigger retaining pin “walks”

a. Worn or broken trigger

Replace the trigger retaining pin or

or works loose during firing,

retaining pin or auto sear

auto sear spring. Refer to

or trigger retaining pin is

spring. Refer to Figure 21.

WP 0013 00.

very easy to push out of

b. Long leg of auto sear spring

Install the long leg of the auto sear

receiver.

set incorrectly into trigger

spring correctly. Refer to

retaining pin groove.

WP 0013 00.

Figure 21. Trigger Retaining Pin and Auto Sear Spring.

17. Runaway gun.

a. Defective auto sear. Refer to

Replace the auto sear. Refer to

Figure 22.

WP 0013 00.

b. Worn or defective

Replace the disconnector. Refer to

disconnector. Refer to

WP 0013 00.

Figure 22.

c. Defective hammer or the top

Replace the hammer. Refer to

of hammer is worn. Refer to

WP 0013 00.

Figure 22.

Figure 22. Auto Sear, Disconnector, and Hammer.

END OF WORK PACKAGE

0006 00-14

TM 8370-50007-IN/2

0007 00

SERVICE UPON RECEIPT

GENERAL

1. Inspect the weapon for damage incurred during shipment. If the weapon has been damaged, report the

damage on SF 364, Report of Discrepancy (ROD).

2. Check the weapon against the packing slip to see if the shipment is complete.

3. Check to see if the weapon has been modified.

4. Check the weapon for damage upon its receipt. Perform limited technical inspection as outlined in

Table 1 of this work package.

Table 1. Service Upon Receipt.

Location

Item

Action

Remarks

Container

AK-47

a. Remove weapon from

containers.

b. Inspect the weapon for damage

If the weapon has

incurred during shipment.

been damaged, report

damage on SF 364..

c. Check the weapon against the

Report all

packing list to see if the

discrepancies

shipment is complete.

Supply system

Check for missing items.

Refer to

responsibility items

TM 8370-50007 OR/1.

(SSRI)

Barrel assembly

If volatile corrosion inhibitor (VCI) is

in the barrel, remove and discard.

AK-47 rifle

All parts

a. Field strip the weapon and

Refer to

inspect for missing, damaged,

TM 8370-50007 OR/1.

and rusted or corroded parts.

b. Clean and lubricate

Refer to

TM 8370-50007 OR/1.

c. Reassemble.

Refer to

TM 8370-50007 OR/1.

d. Function check.

Refer to WP 0017 00.

e. Check to see if the weapon has

Report all

been modified.

modifications.

Conduct initial gaging.

Refer to WP 0021 00

Magazine

Check for positive retention of

Refer to

magazine.

TM 8370-50007 OR/1.

END OF WORK PACKAGE

0007 00-1/2 blank

TM 8370-50007-IN/2

0008 00

PREVENTIVE MAINTENANCE CHECKS AND SERVICES (PMCS), INCLUDING LUBRICATION

INSTRUCTIONS

GENERAL

This work package contains procedures and instructions necessary to perform organizational preventive

maintenance checks and services (PMCS), along with disassembly and reassembly procedures required for

corrective maintenance for the AK-47 rifle.

1. Organizational Maintenance. Organizational maintenance is performed at the using unit beyond the

capabilities of the operator as identified in TM 8370-50007-OR/1. Organizational maintenance is

authorized to service, replace, and adjust the parts and assemblies covered in the Organizational portion

of this manual.

2. Intermediate through Depot Maintenance. This is not applicable to this platform. All maintenance is

performed at the organizational level or the weapon is replaced.

3. Special Tools; Test, Measuring, and Diagnostic Equipment (TMDE); and Support Equipment.

Special tools and TMDE required for support are listed in WP 0025 00. There are no fabricated tools for

this weapons.

4. Repair Parts. Repair parts are listed and illustrated in WP0027 00.

WARNING

Ensure that the weapon is unloaded and that the selector lever is set on SAFE

before performing the following procedures. Do not keep live ammunition

near the work area. Failure to follow these warnings may cause injury or

death to personnel.

NOTES

PMCS is to be performed every 90 days to keep the weapon ready for use. If

the weapon has not been used for 90 days, PMCS described in the operator’s

manual (TM 8370-50007-OR/1) should also be performed.

Solid film lubricant (SFL) is authorized to be used as a touch up for the

exterior protective finish on the AK-47.

General. The PMCS procedures are contained in the following table. They are arranged in logical

sequence requiring a minimum amount of time and motion on the part of the persons performing them

and are arranged so that there will be minimum interference between the persons performing

simultaneous checks on the same end item.

Item Number Column. This column describes checks and services numbered in disassembly sequence.

Interval Column. This column states the designated interval when each check is to be performed.

Item to Check/Service Column. This column lists the items to be checked or serviced.

0008 00-1

TM 8370-50007-IN/2

0008 00

9. Procedure Column. This column contains a brief description of the procedure by which the check is to

be performed. It contains all the information required to accomplish the checks and services.

10. Not Fully Mission Capable if Column. This column states which faults will prevent the weapon from

being capable of performing its primary mission. The weapon should not be used if it meets any of the

faults listed in this column.

11. Other Table Entries. Observe all WARNINGs, CAUTIONs, and NOTEs.

Table 1. Preventive Maintenance Checks and Services for the AK-47 Rifle.

Item

Interval

Location or Item to

Procedure

Not Fully Mission

No.

Check/Service

Capable if:

WARNING

Before starting an inspection, be sure to clear the

weapon. Do not pull the trigger until the weapon has

been cleared. Inspect the chamber to ensure that it is

empty and no ammunition is in position to be

chambered. DO NOT keep live ammunition in the work

area. Failure to follow these warnings may cause injury

or death to personnel.

NOTES

An inactive weapon is a weapon that has been stored in

an arms room for a period of 90 days without use.

Inactive weapons should receive quarterly PMCS

unless inspection reveals more frequent servicing is

necessary.

If the unit armorer detects corrosion on a weapon prior

to the end of the 90 day period, the PMCS should be

performed immediately.

SFL is the authorized touch up for the AK-47 rifle.

0008 00-2

TM 8370-50007-IN/2

0008 00

Table 1. Preventive Maintenance Checks and Services for the AK-47 Rifle - Continued.

Item

Interval

Location or Item to

Procedure

Not Fully Mission

No.

Check/Service

Capable if:

Quarterly

Magazine

a. Disassemble

A magazine is not

(Serviceability Check)

(TM 8370-50007-OR/1). Inspect

available for use with the

the magazine body for bulges,

rifle.

dents, or damaged feeder lips.

Inspect the spring and follower

for bends, kinks, or damage.

Replace the magazine if any of

these conditions exist. Refer to

Figure 1.

b. Reassemble the magazine and

(1) The body is dented

check for binding when

or feeder lips on top

depressing and releasing the

of the body are

follower. Replace the magazine if

damaged. The

the follower binds. Refer to

spring is damaged or

Figure 1.

has flat spots.

(2) The follower binds.

Figure 1. Magazine Components.

0008 00-3

TM 8370-50007-IN/2

0008 00

Table 1. Preventive Maintenance Checks and Services for the AK-47 Rifle - Continued.

Item

Interval

Location or Item to

Procedure

Not Fully Mission

No.

Check/Service

Capable if:

Quarterly

Selector Lever,

Function Check

WARNING

Ensure the weapon is clear prior to performing the

following function checks. If the weapon fails any of

the following function checks, attempt to repair. If

beyond repair, replace the weapon.

Selector Lever

a. Pull and hold the charging handle

The bolt does not lock

- SEMI

to the rear. Check that the

forward.

chamber is clear. Let the bolt

carrier close forward. Refer to

Figure 2.

b. Leave the hammer in the cocked

position. Do not pull the trigger.

- SAFE

a. Place the selector lever in SAFE

position.

b. Pull the trigger. The hammer

The hammer falls.

should not fall.

a. Place the selector lever in SEMI

- SEMI

position.

b. Pull the trigger and hold it to the

The hammer does not

rear. The hammer falls.

fall.

Figure 2. Charging Handle, Trigger, and Selector Lever (Selector Lever on SAFE).

0008 00-4

TM 8370-50007-IN/2

0008 00

Table 1. Preventive Maintenance Checks and Services for the AK-47 Rifle - Continued.

Item

Interval

Location or Item to

Procedure

Not Fully Mission

No.

Check/Service

Capable if:

Quarterly

Selector Lever

NOTES

Cont.

For the purpose of the following test, SLOW is defined

as 1/4 to 1/2 the normal rate of trigger release.

DO NOT milk the trigger. Milking the trigger can cause

the hammer to fall.

Hold the trigger to the rear,

The hammer falls.

-SEMI

charge the weapon, and release

the trigger with a SLOW, smooth

motion, without hesitations or

stops, until the trigger is fully

forward (an audible click should

be heard). The hammer should

not fall. (The hammer should not

fall until the trigger is pulled

again).

Place the selector lever on

The hammer does not

- AUTO

AUTO. Charge the weapon. Pull

fall.

the trigger and hold it to the rear.

The hammer should fall. Refer to

Figure 3.

Holding the trigger to the rear,

The hammer falls when

charge the weapon and release

the trigger is pulled the

the trigger. Pull the trigger a

second time.

second time. The hammer should

not fall. (The hammer should

have been released by the auto

sear when the weapon was

charged.)

Figure 3. Selector Lever on AUTO.

0008 00-5

TM 8370-50007-IN/2

0008 00

Table 1. Preventive Maintenance Checks and Services for the AK-47 Rifle - Continued.

Item

Interval

Location of Item to

Procedure

Not Fully Mission

No.

Check/Service

Capable if:

Quarterly

Selector Lever

With the hammer in the forward

Moderate finger/thumb

Cont.

-AUTO

position, using moderate finger/thumb

pressure does NOT move

pressure, attempt to place the

the selector lever to the

selector lever on the SAFE position.

SAFE position.

Refer to Figure 4.

Figure 4. Selector Lever on SAFE.

Quarterly

Receiver Assembly

a. Apply a light coat of CLP to all

metal parts. Remove any rust,

dirt, or debris. Remove any burrs.

Lubricate all moving parts.

Remove excess lubricant. Refer

to WP 0009 00.

b. Hand check the thread protector

The thread protector or

for looseness on the barrel, then

barrel is loose.

hand check the barrel for

looseness on the receiver. Refer

to Figure 5.

Figure 5. Thread Protector.

0008 00-6

TM 8370-50007-IN/2

0008 00

Table 1. Preventive Maintenance Checks and Services for the AK-47 Rifle - Continued.

Item

Interval

Location of Item to

Procedure

Not Fully Mission

No.

Check/Service

Capable if:

Quarterly

Receiver Assembly

c. Remove the lower handguard

The handguards are

Cont.

and the upper handguard and

missing or defective.

gas tube. Refer to

TM 8370-50007-OR/1. Inspect

the handguards internally and

externally for cracks and

damage. Refer to Figure 6.

d. Cracks are acceptable providing

they do not extend into the front

or rear of the handguards or

adversely affect the weapon’s

operation, operator safety, or

proper retention of the

handguard. Refer to Figure 6.

e. Check the gas tube for

The gas tube has

deformities or holes. Remove

deformities, holes, carbon

carbon deposits or debris. Refer

deposits, or debris.

to Figure 6.

Figure 6. Lower Handguard and Upper Handguard and Gas Tube.

Check the gas selector, gas

The gas selector, gas

block, and rear sight assembly

block, or rear sight

for damage and functionality.

assembly is

unserviceable or

damaged.

0008 00-7

TM 8370-50007-IN/2

0008 00

Table 1. Preventive Maintenance Checks and Services for the AK-47 Rifle - Continued.

Item

Interval

Location or Item to

Procedure

Not Fully Mission

No.

Check/Service

Capable if:

Quarterly

Receiver Assembly

g. Inspect the pistol grip screw and

The pistol grip is

Cont.

pistol grip for defects or

defective or loose.

looseness on the receiver.

h. Check the magazine release for

The magazine release

magazine retention.

will not retain a

magazine.

Check the fixed buttstock (if

The fixed buttstock has

present) for defects. A total of

more than three cracks or

three cracks are acceptable.

any cracks near critical

However, cracks near critical

areas.

areas (near pins or screws) are

not acceptable. Refer to Figure 7.

Figure 7. Fixed Buttstock.

Check the fixed buttstock (if

The fixed buttstock is

present) for looseness on the

loose.

receiver. If it is loose, remove the

screws, clean the threads, apply

thread-locker, and reinstall the

screws. If necessary, replace the

buttstock screws or buttstock.

k. Check the folding buttstock (if

The folding buttstock is

present) for cracks and bends.

damaged, will not fold

Ensure it will fold and extend.

and extend, or lock in

Ensure it will lock in both

both positions.

positions. Lubricate all joints and

moving parts.

0008 00-8

TM 8370-50007-IN/2

0008 00

Table 1. Preventive Maintenance Checks and Services for the AK-47 Rifle - Continued.

Item

Interval

Location or Item to

Procedure

Not Fully Mission

No.

Check/Service

Capable if:

Quarterly

Receiver Assembly

Raise and lower the rear sight

The rear sight leaf spring

Cont.

assembly. The rear sight leaf

will not retain the rear

spring should retain the rear sight

sight assembly in either

assembly in both positions with

position

firmness.

m. Check the front sight base, post,

The front sight base,

locking detent, and detent spring

post, locking detent, or

for damage or corrosion. Clean

detent spring are

and lubricate the parts. Refer to

damaged or corroded.

Figure 8.

NOTE

If the front or rear sight is moved, return it to its

original position.

n. Check the sling swivel that is

The sling swivel is

located on the left side of the gas

defective.

block for damage and proper

function.

Figure 8. Receiver Assembly and Components.

0008 00-9

TM 8370-50007-IN/2

0008 00

Table 1. Preventive Maintenance Checks and Services for the AK-47 Rifle - Continued.

Item

Interval

Location or Item to

Procedure

Not Fully Mission

No.

Check/Service

Capable if:

Quarterly

Receiver Assembly

Cont.

WARNINGS

Dry cleaning solvent is flammable and toxic and should

be used in a well-ventilated area. The use of rubber

gloves is necessary to protect the skin when washing

weapon parts. Failure to follow this warning may cause

injury or death to personnel.

CAUTION

DO NOT use a wire brush to roughen the surfaces. Use

a well-ventilated area during cleaning and the

application of solid film lubricant (SFL). If SFL comes

in contact with moving parts or functioning surfaces of

the weapon, remove the SFL immediately by washing

the area with dry cleaning solvent.

NOTE

Shiny metal exterior surfaces of the weapon should be

recoated with SFL. Clean the surface with dry cleaning

solvent, dry, roughen with abrasive cloth, and apply

solid film lubricant.

Inspect the receiver finish for

scratches or worn, shiny spots.

If scratched or worn shiny spots

are present, disassemble the

receiver assembly and remove all

lubricant from the surface with

dry cleaning solvent.

Wear chemical and oil protective

gloves and use a wash pan (tote

box) to apply the solvent. Let the

parts dry thoroughly. Roughen

the surface using abrasive cloth

and apply SFL. Allow 16 to 24

hours drying time before

handling.

0008 00-10

TM 8370-50007-IN/2

0008 00

Table 1. Preventive Maintenance Checks and Services for the AK-47 Rifle - Continued.

Item

Interval

Location or Item to

Procedure

Not Fully Mission

No.

Check/Service

Capable if:

Quarterly

Bolt Carrier Assembly

WARNING

During general maintenance, DO NOT interchange bolt

assemblies from one weapon to another without

checking for the proper headspace. Refer to

WP 0021 00. Failure to follow this warning may cause

injury or death to personnel.

Disassemble (WP 0011 00 and

The bolt carrier assembly

WP 0012 00) and inspect the bolt

or bolt assembly are

carrier assembly and bolt

defective.

assembly for defects. Refer to

Figure 8.

Check the bolt for an elongated

The firing pin hole is

or cracked firing pin hole. If the

elongated or cracked.

firing pin hole is elongated or

cracked, replace the bolt. Refer

to Figure 8.

Check for a broken or missing

There is a missing or

firing pin retaining pin. Replace

broken firing pin retaining

the pin if necessary. Refer to

pin.

Figure 8.

Check the cartridge extractor and

The parts are missing or

extractor spring for defects and

unserviceable.

serviceability. If the cartridge

extractor or extractor spring are

dirty, clean, lubricate, and

assemble them. Replace them as

necessary. Refer to Figure 8.

Check the bolt carrier assembly

The bolt carrier assembly

(bolt carrier and gas piston) for

is damaged.

defects. Replace the bolt carrier if

necessary. Refer to Figure 8.

0008 00-11

TM 8370-50007-IN/2

0008 00

Table 1. Preventive Maintenance Checks and Services for the AK-47 Rifle - Continued.

Item

Interval

Location or Item to

Procedure

Not Fully Mission

No.

Check/Service

Capable if:

Quarterly

Recoil Spring and

Check the recoil spring and guide rod

The recoil spring and

Guide Rod Assembly

assembly for straightness, spring

guide rod assembly has

tension, and defects. Replace if

weak spring tension, is

necessary. Refer to Figure 10.

bent, or defective.

Figure 10. Recoil Spring and Guide Rod Assembly.

Quarterly

Top Cover

Check the top cover for dents.

The top cover is dented.

Replace the top cover if dented.

Refer to Figure 11.

Figure 11. Top Cover.

END OF WORK PACKAGE

0008 00-13/14 blank

TM 8370-50007-IN/2

0009 00

GENERAL MAINTENANCE INSTRUCTIONS

THIS WORK PACKAGE DESCRIBES

Scope, Work Safety, General Information, Cleaning Instructions, Inspection Instructions, Repair Instructions,

Lubrication Instructions, Standard Tool Requirements, Applying Torque, and Tagging Instructions.

INITIAL SETUP

Maintenance Level

References

Organizational

TM 4795-12/1_

TM 9-247_

WP 0008 00

SCOPE

The following general maintenance instructions contain general shop practices and specific methods used to

properly maintain the AK-47 rifle.

WORK SAFETY

1. Before beginning the following tasks, ensure safety by wearing protective gear such as safety goggles or

lenses, safety shoes, rubber apron, and gloves.

2. Observe all WARNINGs, CAUTIONs, and NOTEs.

GENERAL INFORMATION

Before beginning a task, determine how much repair, modification, or replacement is needed to repair the

weapon as described in this manual. Occasionally, the cause of equipment failure is apparent and complete

disassembly of the weapon is unnecessary. Should disassembly be necessary, only disassemble the weapon so

far as necessary to repair or replace the broken parts.

CLEANING INSTRUCTIONS

WARNINGS

Use only cleaner, lubricant, and preservative

(CLP) for cleaning and

lubrication of the AK-47 rifle in all but the most severe conditions.

Improper cleaning methods and use of unauthorized cleaning solvents may

injure personnel and damage equipment. Refer to TM 9-247_, Materials

Used for Cleaning, Preserving, Abrading, and Cementing Ordnance

Materials and Related Materials Including Chemicals for correct

information.

Cloths or rags saturated with solvent cleaning compound must be disposed of

in accordance with authorized facilities’ procedures.

0009 00-1

TM 8370-50007-IN/2

0009 00

WARNINGS - CONTINUED

Eye shields must be worn when cleaning with a wire brush. Flying rust and

metal particles may cause injury to personnel.

Particles blown by compressed air are hazardous. Use a maximum of 30 psi

when cleaning components. DO NOT exceed 15 psi nozzle pressure when

drying parts with compressed air.

DO NOT direct compressed air against human skin. Make sure air stream is

directed away from the user and other personnel in the area. To prevent

injury, the user must wear protective goggles or a face shield.

Failure to follow these warnings may result in injury or death to personnel.

CAUTIONS

Do not mix multiple lubricants on the same weapon. The weapon must be

cleaned thoroughly when changing from one lubricant to another. Dry

cleaning solvent (SD) is recommended for removing the old lubricant before

changing to another lubricant.

DO NOT allow CLP or any other solvent to come in contact with telecopic

sight lenses or other optical devices.

NOTE

When the term lubricant or CLP is used in the following text, the lubricant

used can be either CLP; lubricating oil, semi-fluid, automatic weapons

(LSA); or lubricant, arctic, weapons (LAW). Cloths or rags saturated with

CLP must be disposed of in accordance with authorized facilities’

procedures. Cleaning instructions are the same for the majority of the parts

and components of the weapon.

Maintenance personnel must thoroughly understand the importance of cleaning. Great attention to detail is

required for cleaning the weapon. Dirt, dust, foreign material, and grit are a constant threat to satisfactory

performance of the weapon. Thorough cleaning ensures high weapon performance. The following should

apply to all cleaning, inspection, repair, and assembly operations.

1. Cleaning All Parts.

a. Clean all parts before inspection, after repair, and before assembly.

b. To prevent contamination, hands should be kept free of any accumulation of grease that can collect

dust, dirt, or grit.

c. After cleaning, all parts should be covered or wrapped to protect them from dust and dirt. Parts that

are subject to rust should be oiled lightly.

0009 00-2

TM 8370-50007-IN/2

0009 00

2. Cleaning Disassembled Parts.

a. Dry and cover all cleaned parts.

b. All parts subject to rusting must be lightly oiled and wrapped.

c. Keep all related parts and components together. Do not interchange parts with another weapon.

3. Castings.

a. Clean the inner and outer surfaces of castings with CLP.

b. Use a stiff brush to remove sludge and gum deposits.

c. Clear out all tapped (threaded) holes with compressed air to remove dirt and cleaning solvent.

4. Machined Surfaces.

a. Clean machined surfaces with a pipe cleaner.

b. Dry surfaces thoroughly with compressed air.

5. Mated Surfaces. Lightly coat with CLP and wrap all parts subject to rust before storing.

INSPECTION INSTRUCTIONS

General. Carefully check all components and parts to determine if they are serviceable for reuse, or if

they must be scrapped.

Drilled and Tapped (Threaded) Holes.

a. Inspect for wear, distortion (stretching), cracking, or any other damage in or around holes.

b. Inspect threaded areas for wear, distortion, or evidence of cross-threading.

Castings.

a. Replace all cracked castings.

b. Inspect machined surfaces for nicks, burrs, or raised metal. Mark damaged areas for repair or

replacement.

c. Inspect all screws and screw openings for damaged or stripped threads.

Studs, Bolts, and Screws. Replace if threads are damaged, bent, or stretched.

Machine-Tooled Parts. Inspect parts for cracks, breaks, elongated holes, wear, and chips. Replace any

damaged parts.

Machined Surfaces. Inspect machined surfaces for cracks, evidence of wear, galled or pitted surfaces,

burrs, nicks, and scratches.

Mating Surfaces. Inspect mating surfaces for proper seal, secure fit, and pitting.

Rusted Surfaces. Inspect rusted surfaces for pitting, holes, and severe damage.

0009 00-3

TM 8370-50007-IN/2

0009 00

9. Internal Parts. Inspect internal parts for cracks, nicks, burrs, evidence of overheating, and wear.

10. Externally Exposed Parts. Inspect externally exposed parts for breaks, cracks, rust damage, and wear.

11. Springs. Inspect springs for broken, collapsed, and twisted coils.

REPAIR INSTRUCTIONS

1. General. Any repair procedure for a specific part is covered in the working package related to that item.

CAUTION

Repaired items must be thoroughly cleaned to remove metal and abrasives to

prevent them from entering working parts of the weapon.

2. Castings. Only minor repairs to machined surfaces are permitted (e.g. removing minor nicks, burrs, and

scratches) using a fine-mill file and crocus cloth with solvent cleaning compound.

LUBRICATION INSTRUCTIONS

Refer to Preventive Maintenance Checks and Services (PMCS) (WP 0008 00) for detailed, illustrated

instructions on proper lubrication. The following are some general practices to remember.

1. Use the correct lubricant in accordance with TM 4795-12/1_, Organizational Corrosion Prevention and

Control Procedures for USMC Equipment.

2. Keep the lubricants clean.

3. Lubricate all clean, disassembled, and new parts to prevent rust.

STANDARD TOOL REQUIREMENTS

Some maintenance tasks may require special or fabricated tools. The initial setup of the procedure will specify

any special or fabricated tools needed to perform that procedure. Special tools should be used only for the

maintenance procedures for which they are designed or called out. If you are unfamiliar with a required tool,

see your supervisor.

APPLYING TORQUE

If a unique torque value is required, it will be provided in a procedural step in the task.

TAGGING INSTRUCTIONS

1. Use marker tags to identify all parts that may be hard to identify or replace later. Fasten the tags to parts

during removal by wrapping wire fasteners around or through the parts and twisting the ends together.

Position the tags out of the way during cleaning, inspection, and repair. Mark the tags with a pencil, pen,

or marker.

2. Identify and tag other parts by name and the installed location as required.

END OF WORK PACKAGE

0009 00-4

TM-8370-50007-IN/2

0010 00

DISASSEMBLY OF WEAPON

THIS WORK PACKAGE DESCRIBES

Disassembly.

INITIAL SETUP

Maintenance Level

Equipment Conditions

Organizational

Weapon cleared (TM 8307-50007-OR/1)

References

TM 8307-50007-OR/1

WARNING

Always assume that every weapon is loaded until it is determined through

visual and physical inspection that it is not. Procedures for clearing and

unloading the weapon are outlined in TM 8307-50007-OR/1. Failure to

follow this warning may cause injury or death to personnel.

DISASSEMBLY

Remove the magazine, cleaning rod, handguards, top cover, recoil spring and guide rod assembly, and bolt

carrier assembly and bolt assembly from the receiver.

Figure 1. Major Components of the AK-47 Disassembled.

END OF WORK PACKAGE

0010 00-1/2 blank

TM 8370-50007-IN/2

0011 00

BOLT CARRIER ASSEMBLY AND BOLT ASSEMBLY

THIS WORK PACKAGE DESCRIBES

Disassembly, Cleaning, Inspection and Repair, Lubrication, and Reassembly.

INITIAL SETUP

Maintenance Level

References

Organizational

TM 8370-50007-OR/1

WP 0010 00

Tools and Special Tools

WP 0012 00

WP 0025 00

E7900 tool kit

Equipment Conditions

Bolt carrier assembly and bolt assembly

removed (WP 0010 00)

WARNING

DO NOT interchange bolt assemblies from one weapon to another without

checking for the proper headspace. Failure to follow this warning may cause

injury or death to personnel.

DISASSEMBLY

1. Push the bolt assembly into the bolt carrier. Refer to Figure 1.

Figure 1. Pushing the Bolt Assembly into the Bolt Carrier.

0011 00-1

TM 8370-50007-IN/2

0011 00

2. Rotate the bolt assembly to disengage the bolt cam, located on the rounded locking lug, from the

machined cam recess of the bolt carrier. Refer to Figure 2.

Figure 2. Disengaging the Bolt Cam from the Cam Recess.

3. Pull the bolt assembly completely out of the bolt carrier. Refer to Figure 3.

Figure 3. Pulling the Bolt Assembly Out of the Bolt Carrier.

CLEANING

Clean and remove all carbon deposits. Refer to TM 8370-50007-OR/1.

INSPECTION AND REPAIR

1. Inspect the bolt carrier assembly (bolt carrier and gas piston) as follows:

a. Check the bolt carrier assembly for burrs, cracks, deformities, and defects. Remove any burrs.

Replace if damaged.

b. Check the cam recess for burrs, cracks, deformities, and defects. Remove any burrs. Replace if

damaged.

c. Clean, inspect, repair, and lubricate the bolt assembly. Refer to WP 0012 00.

LUBRICATION

For all lubrication requirements refer to TM 8370-50007-OR/1.

0011 00-2

TM 8370-50007-IN/2

0012 00

BOLT ASSEMBLY

THIS WORK PACKAGE DESCRIBES

Disassembly, Cleaning, Inspection and Repair, Lubrication, and Reassembly.

INITIAL SETUP

Maintenance Level

References

Organizational

TM 8370-50007-OR/1

WP 0011 00

Tools and Special Tools

WP 0021 00

WP 0025 00

E7900 tool kit

Penetrant kit

Equipment Conditions

Bolt assembly removed (WP 0011 00)

WARNING

DO NOT interchange bolt assemblies from one weapon to another without

checking for the proper headspace. Failure to follow this warning may cause

injury or death to personnel.

DISASSEMBLY

1. Using a bench block, insert a 1/16-inch punch into the firing pin retaining pin hole, on the side of the bolt

opposite the cam, to push out the firing pin retaining pin. Refer to Figure 1.

Figure 1. Removing the Firing Pin Retaining Pin.

0012 00-1

TM 8370-50007-IN/2

0012 00

2. Remove the firing pin from the bolt. Refer to Figure 2.

Figure 2. Removing the Firing Pin.

WARNING

The grooved extractor retaining pin and extractor are under spring tension.

3. While maintaining pressure on the extractor to relieve the spring tension, use a 1/16-inch punch to remove

the grooved extractor retaining pin. Refer to Figure 3.

Figure 3. Removing the Grooved Extractor Retaining Pin.

4. Remove the extractor, and extractor spring. Refer to Figure 4.

Figure 4. Removing the Extractor and Extractor Spring.

0012 00-2

TM 8370-50007-IN/2

0012 00

CLEANING

Clean and remove all carbon deposits. Refer to TM 8370-50007-OR/1.

INSPECTION AND REPAIR

1. Check the firing pin retaining pin for bends and breaks. Replace the firing pin retaining pin if damaged.

2. Check the firing pin for bends and breaks. Replace the firing pin if damaged.

3. Check the extractor for burrs, chips, and cracks. Replace the extractor if damaged.

4. Check the extractor spring for spring tension, bends, or breaks. Replace the extractor spring if damaged.

5. Check the grooved extractor retaining pin for bends or breaks. Replace the grooved extractor retaining pin

if damaged.

6. Inspect the bolt as follows (refer to Figure 5):

Figure 5. Opposite Views of the Bolt.

a. Check the bolt for pits, burrs, and wear as follows:

(1) If the bolt face has a cluster of pits that are tightly grouped or touching and cover an area

approximately 1/8-inch across or larger, reject and replace the bolt.

(2) The bolt can contain individual or scattered pits and not be rejected.

(3) If the bolt face contains pits that extend into the firing pin hole, gage the bolt with the plain plug

“no go” gage. Refer to WP 0021 00. Replace if defective.

(4) Machine tool marks (rings, grooves, or ridges) on the bolt face less than approximately

0.010-inch are acceptable.

b. Check for cracks in the bolt. Use the penetrant kit to check for cracks in the bolt as follows:

(1) Clean the area to be inspected to ensure that it is free of dirt, grit, and grease by spraying a small

amount of remover on the area to be inspected. Let it dry, and then wipe the area off with a rag.

0012 00-3

TM 8370-50007-IN/2

0012 00

(2) Spray penetrant (enough to wet the area) on the area of the bolt to be inspected.

(3) Spray developer over the area covered in penetrant, and let it sit for five to ten seconds. A crack

will be indicated by a change in color where the crack is located. If cracks appear, the

component is unserviceable and must be replaced.

(4) Pay close attention to the area where the locking lugs meet the body.

(5) If there are no cracks, spray remover on the area covered in developer, let it dry, and then wipe it

with a rag.

(6) Oil the area to prevent corrosion.

WARNING

If the bolt is replaced, perform head space gaging. Refer to WP 0021 00.

(7) Replace the bolt if damaged.

LUBRICATION

For all lubrication requirements, refer to TM 8370-50007-OR/1.

REASSEMBLY

1. Install the extractor spring into the extractor and install them into the bolt. Refer to Figure 6.

Figure 6. Installing Extractor and Extractor Spring.

0012 00-4

TM 8370-50007-IN/2

0012 00

CAUTION

Ensure the groove in the grooved extractor retaining pin is aligned with the

firing pin retaining pin hole BEFORE inserting the firing pin retaining pin.

Failure to do so may cause the firing pin retaining pin to lodge in the bolt

permanently.

2. Maintaining pressure on the extractor to relieve spring tension, insert a 1/16-inch punch into the SMALL

side of the extractor retaining pin hole in order to align the slot in the extractor with the grooved extractor

retaining pin hole. Install the grooved extractor retaining pin into the LARGE side of the grooved

extractor retaining pin hole (next to the bolt cam). Ensure that the grooved side of the pin is on the

LARGE side of the pin hole. Ensure it is at least flush. Refer to Figure 7.

Figure 7. Installing the Grooved Extractor Retaining Pin.

3. Install the firing pin into the bolt. Ensure the flat side of the firing pin is facing the small, squared locking

lug. Refer to Figure 8.

Figure 8. Installing the Firing Pin.

0012 00-5

TM 8370-50007-IN/2

0013 00

RECEIVER ASSEMBLY

THIS WORK PACKAGE DESCRIBES

Disassembly, Cleaning, Inspection and Repair, Lubrication, and Reassembly.

INITIAL SETUP

Maintenance Level

References

Organizational

WP 0009 00

WP 0010 00

Tools and Special Tools

WP 0011 00

WP 0014 00

WP 0015 00

E7900 tool kit

WP 0022 00

Front sight adjustment tool

WP 0025 00

Combination tool

TM 8370-50007-OR/1.

Equipment Conditions

Weapon field stripped (WP 0010 00)

DISASSEMBLY

1. Muzzle and Front Sight.

a. Remove the thread protector from the muzzle of the barrel by holding down the locking detent with a

punch and unscrewing the thread protector until it comes off. Refer to Figure 1.

Figure 1. Depressing the Locking Detent and Removing the Thread Protector.

0013 00-1

TM 8370-50007-IN/2

0013 00

NOTE

The M249 front sight tool can also be used for working on the front sight.

b. Use the front sight adjustment tool or the combination tool (refer to Figure 2) to remove the front

sight post. Refer to Figure 3.

Figure 2. Front Sight Adjustment Tool (left) and Combination Tool (right).

Figure 3. Removing the Front Sight Post.

c. Use the front sight adjustment tool to remove the windage drum. Place the ends of the clamp on either

side of the windage drum and turn the handle to push the drum out of the front sight base and through

the hole in the front sight adjustment tool. Refer to Figure 4.

Figure 4. Removing the Windage Drum.

0013 00-2

TM 8370-50007-IN/2

0013 00

2. Gas Block.

a. The gas selector must be in the UP position, indicating normal use. Refer to Figure 5.

Figure 5. Gas Selector in the UP Position.

CAUTION

The C-clip can break or deform during removal. If the C-clip becomes

broken or deformed, replace the C-clip.

b. Remove the C-clip located on the left side of the gas block by using the scraper tool and pulling away

from the open end of the C-clip. Refer to Figure 6.

Figure 6. Removing the C-Clip with the Scraper Tool.

0013 00-3

TM 8370-50007-IN/2

0013 00

3. Rear Sight.

a. Extend the rear sight. Refer to Figure 9.

Figure 9. The Rear Sight Extended.

b. While pulling the bottom of the rear sight assembly rearward, use a dead blow mallet to tap on the top

of the rear sight assembly to dislodge it. Refer to Figure 10.

Figure 10. Dislodging and Removing the Rear Sight Assembly Using a Dead Blow Mallet.

NOTE

As an alternative to steps a and b, follow step c to remove the rear sight

assembly.

c. Tilt the rear sight assembly to a 45 degree angle. While pressing down and forward on the narrow end

of the rear sight leaf spring with a punch or flat head screw driver, hold the rear sight assembly with

fingers and press down firmly to remove the rear sight assembly studs from the holes in the rear sight

base. Refer to Figure 11.

Figure 11. Dislodging the Rear Sight Assembly for Removal.

0013 00-5

TM 8370-50007-IN/2

0013 00

d. When the rear sight assembly dislodges from the track of the rear sight base, pull it to the rear to

remove it.

NOTE

The rear sight leaf spring is staked into the rear sight base.

e. To remove the rear sight leaf spring, pull up at a 45 degree angle on the narrow, forward end with

needle-nosed pliers. Refer to Figure 12.

Figure 12. Removing the Rear Sight Leaf Spring.

4. Trigger Assembly.

WARNING

The auto sear is under spring tension. Use care when removing or installing

the auto sear.

NOTE

The long leg of the auto sear spring is set into the grooves in the heads of the

three retaining pins in the receiver in order to retain the pins in the receiver.

The auto sear spring must be lifted or lowered out of the grooves in the pins

before the pins can be removed. Refer to Figure 13.

Figure 13. Proper Installation of the Auto Sear Spring.

0013 00-6

TM 8370-50007-IN/2

0013 00

a. Use a punch or the scraper tool to lift the long leg of the auto sear spring out of the groove in the head

of the trigger retaining pin. Refer to Figure 14.

Figure 14. Removing the Long Leg of the Auto Sear Spring

from the Groove in the Trigger Retaining Pin.

WARNING

After pushing down the arm of the auto sear, the hammer will be under

spring tension. Pulling the trigger will release the hammer and it will fall

forward with force.

CAUTION

Letting the hammer fall uncontrolled will damage the weapon. Ensure to

place a finger over the hammer before pulling the trigger in order to ride the

hammer forward.

b. Using a punch, push the arm of the auto sear, against the right wall of the receiver, forward until an

audible click is heard. Using a finger to ride the hammer forward, pull the trigger to release the spring

tension on the hammer. Refer to Figure 15.

Figure 15. Depressing the Arm of the Auto Sear and Riding the Hammer Forward.

0013 00-7

TM 8370-50007-IN/2

0013 00

CAUTION

Only moderate pressure is necessary to remove the retaining pins from the

receiver. If a retaining pin is difficult to remove, check to ensure that the

groove in the head the retaining pin is not caught on the receiver wall.

c. Use a punch to push the trigger retaining pin from the right side of the receiver and remove the pin

from the left side of the receiver. Refer to Figure 16.

Figure 16. Using a Punch to Push Out the Trigger Retaining Pin.

d. Remove the disconnector and disconnector spring. (If present, remove the interrupter and interrupter

spring.) Refer to Figure 17.

Figure 17. Removing the Disconnector and Disconnector Spring.

0013 00-8

TM 8370-50007-IN/2

0013 00

e. Remove the disconnector spring from the disconnector. Refer to Figure 18.

Figure 18. Removing the Disconnector Spring from the Disconnector.

Rotate the selector lever up to the 12 o’clock position and pull it out of the right side of the receiver.

Refer to Figure 19.

Figure 19. Rotating and Removing the Selector Lever.

WARNING

The hammer spring is under spring tension and the ends may be sharp

enough to puncture the skin.

g. Using needle-nosed pliers or the curved scraper tool, pull the ends of the hammer spring behind the

hammer. If necessary, secure the ends with wire. Refer to Figure 20.

Figure 20. Placing the Ends of the Hammer Spring Behind the Hammer.

0013 00-9

TM 8370-50007-IN/2

0013 00

h. Remove the trigger. Refer to Figure 21.

Figure 21. Removing the Trigger.

CAUTION

Only moderate pressure is necessary to remove the retaining pins from the

receiver. If a retaining pin is difficult to remove, check to ensure that the

groove in the head the retaining pin is not caught on the receiver wall.

Using a punch or flat head screwdriver, apply downward pressure on the auto sear spring to push the

long leg of the auto sear spring out of the retaining groove in the hammer retaining pin. Using a

punch, push the hammer pin from the right side of the receiver and remove the pin from the left side

of the receiver. Refer to Figure 22.

Figure 22. Pushing the Long Leg of Auto Sear Spring out of the Groove in the Hammer

Retaining Pin and Removing the Hammer Retaining Pin.

0013 00-10

TM 8370-50007-IN/2

0013 00

Rotate the hammer and hammer spring 90° as an assembly, and lift it out of the receiver. If the

hammer is difficult to remove, move it to the rear of the receiver, past the rails in the receiver, and

then remove it from the receiver. Refer to Figure 23.

Figure 23. The Hammer and Hammer Spring Removed.

k. Pull the long leg of the auto sear spring out of the groove in the auto sear retaining pin.

CAUTION

Only moderate pressure is necessary to remove the retaining pins from the

receiver. If the retaining pins are difficult to remove, check to ensure that the

grooves near the end of the retaining pins are not caught on the receiver wall.

Maintaining pressure on the auto sear spring, use a punch to push the auto sear retaining pin from the

right side of the receiver and remove the pin from the left side of the receiver. Refer to Figure 24.

Figure 24. Removing the Auto Sear Retaining Pin.

0013 00-11

TM 8370-50007-IN/2

0013 00

5. Pistol Grip.

a. Using a flat head screwdriver, remove the pistol grip screw from the bottom of the pistol grip. Refer

to Figure 27.

Figure 27. Removing the Pistol Grip Screw.

NOTE

The pistol grip block, if present, is removed through the top of the receiver.

b. Remove the pistol grip and pistol grip screw mounting block (if present) from the weapon.

6. Fixed Buttstock. Using a flat head screwdriver, remove the top buttstock screw and the two bottom

buttstock screws located at the front of the fixed buttstock near the receiver. Pull the fixed buttstock to the

rear and remove the fixed buttstock from the receiver. Refer to Figure 28.

Figure 28. Removing Buttstock Screws and Pulling the Fixed Buttstock from the Receiver.

CLEANING

Clean and remove all carbon deposits from the weapon. Refer to TM 8370-50007-OR/1.

INSPECTION AND REPAIR

1. Muzzle, Front Sight, and Gas Block.

a. Check the front sight post and windage drum for cracks, bends, or distortion. Replace the front sight

post or windage drum if damaged.

b. Check the front sight base for cracks, bends, or breaks. Replace the front sight base if damaged.

c. Check the gas block for cracks, bends, or breaks. Replace the gas block if damaged.

d. Check the locking detent spring for breaks or bends. Replace the spring if damaged.

0013 00-13

TM 8370-50007-IN/2

0013 00

e. Check the locking detent for burrs, bends, or breaks. Remove the burrs. Replace the locking post if

damaged.

Check the C-clip for bends, breaks, or deformities. Replace the C-clip if damaged.

g. Check the bayonet lug, located under front sight, for proper fit of bayonet. Check for burrs. Remove

any burrs.

Receiver Assembly.

a. Check the receiver for cracks, burrs, or deformities. Remove any burrs. Replace if damaged.

b. Check the barrel for looseness in the receiver. Attempt to repair if loose. If beyond repair, replace the

receiver.

c. Check the ejector for cracks, burrs, or deformities. Remove any burrs. Attempt to repair if deformed.

If beyond repair, replace the receiver. If the ejector is worn so that it will no longer eject cartridges

during firing, replace the receiver.

d. Check the magazine release for spring tension. If there is no spring tension, attempt to repair.

Rear Sight.

a. Check the rear sight leaf spring for breaks or deformities. Replace the rear sight leaf spring if

damaged

b. Disassemble, clean, lubricate, repair, and reassemble the rear sight assembly. Refer to WP 0014 00.

Trigger Assembly.

a. Check all trigger components for excessive wear, burrs, bends, breaks, and cracks. Remove any burrs

and replace the components if damaged.

b. Check all springs for bends, breaks, flat spots, and spring tension. Replace the springs if damaged.

0013 00-14

TM 8370-50007-IN/2

0013 00

5. Fixed Buttstock.

a. Check the fixed buttstock for cracks. Up to three cracks are acceptable. No cracks are acceptable in

the critical areas (near pins or screws). Refer to Figure 29. Replace the buttstock if damaged.

Figure 29. Critical Areas of the Fixed Buttstock.

b. Check the buttstock screws for burrs. Remove the burrs. Replace the screws if damaged.

c. Disassemble, clean, lubricate, repair, and reassemble the buttplate and trap door. Refer to

WP 0015 00.

LUBRICATE

Lubricate all metal parts with CLP. Refer to WP 0009 00.

REASSEMBLY

1. Fixed Buttstock.

a. Align the fixed buttstock with the rear of the receiver. Install and secure it with the one, shorter top

buttstock screw and the two, longer bottom buttstock screws. Refer to Figure 30.

Figure 30. Aligning and Installing the Fixed Buttstock onto the Rear of the Receiver.

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2. Pistol Grip.

a. Install the pistol grip screw mounting block, if present, through the top of the receiver. Install the

pistol grip. Using a flat head screw driver, install the pistol grip screw through the pistol grip and into

the mounting block. Refer to Figure 31.

Figure 31. Installing the Pistol Grip.

b. Ensure the pistol grip is secure.

3. Trigger Assembly.

NOTE

When installing the retaining pins, ensure that the long leg of the auto sear

spring is properly installed. Refer to Figure 32. The long leg of the auto sear

spring must be properly set into the grooves in the heads of the three

retaining pins in the receiver in order to retain the pins in the receiver.

Figure 32. Proper Installation of the Long Leg of the Auto Sear Spring.

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a. Install the short leg of the auto sear spring in the auto sear. Refer to Figure 33.

Figure 33. The Short Leg of the Auto Sear Spring Installed in the Auto Sear.

NOTE

When installing the auto sear and auto sear spring, use a punch, inserted from

the right side of the receiver, as a slave pin to hold them in place until the

auto sear retaining pin is installed.

b. Install the auto sear assembly in the receiver. Ensure that the arm of the auto sear is against the right

side of the receiver and the long leg of the auto sear spring is against the left side of the receiver.

CAUTION

Only moderate pressure is necessary to install the retaining pins into the

receiver. If the retaining pins are difficult to install, check to ensure that the

grooves in the heads of the retaining pins are not caught on the receiver wall.

c. Insert the auto sear retaining pin from the left side of the receiver, ensuring to thread the pin through

the auto sear spring and the auto sear. Refer to Figure 34.

Figure 34. Installing the Auto Sear Retaining Pin.

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NOTE

When installing the hammer assembly, ensure the wider side of the hammer

is facing the rear of the receiver. Refer to Figure 35.

d. Install the hammer assembly into the receiver, then insert the hammer retaining pin from the left side

of the receiver. Ensure that the long leg of the auto sear spring is BELOW the hammer retaining pin

and set it in the groove of the pin near the left side of the receiver. Refer to Figure 35.

Figure 35. Installing the Hammer Assembly and the Hammer Retaining Pin and Setting the

Auto Sear Spring into Groove of the Hammer Retaining Pin.

NOTE

AK-47 models without interrupters will have dual hammer hooks on the

trigger. Refer to Figure 36. In models with dual trigger hooks, the trigger

must be installed BEFORE installing the selector lever.

Figure 36. Trigger with Dual Hammer Hooks.

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NOTE

When installing the trigger and disconnector assembly, use a punch as a slave

pin. Insert the punch from the right side of the receiver and thread it through

the holes in the trigger and disconnector to hold them in place until the

trigger retaining pin is installed.

e. Install the trigger in the receiver. Refer to Figure 37.

Figure 37. Installing the Trigger.

WARNING

The hammer spring is under spring tension and the ends may be sharp

enough to puncture the skin.

Remove the wire, if used, from the ends of the hammer spring and carefully lower the legs of the

hammer spring until they rest on top of the trigger. Refer to Figure 38.

Figure 38. Lowering the Hammer Spring Legs onto the Trigger.

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Install the disconnector into the trigger. Ensure that the hole in the disconnector aligns with the hole

in the trigger. Refer to Figure 41.

Figure 41. Installing the Disconnector and Disconnector Spring.

If present, install the interrupter onto the trigger, ensuring that the notch in the base of the interrupter

is seated on the forward edge of the right side of the trigger. Install the interrupter spring with the

long leg of the spring pointing forward. Ensure that the hole in the base of the interrupter and the coil

of the interrupter spring are aligned with the holes in the trigger. Refer to Figure 42.

Figure 42. The Interrupter and Interrupter Spring.

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k. If present, push the long leg of the interrupter spring to the rear until it seats in the notch in the

interrupter joint. Refer to Figure 43.

Figure 43. The Notch in the Interrupter Joint.

CAUTION

Only moderate pressure is necessary to install the retaining pins into the

receiver. If the retaining pins are difficult to install, check to ensure that the

grooves in the heads of the retaining pins are not caught on the receiver wall.

Insert the trigger retaining pin from the left side of the receiver. Ensure to thread the pin through the

holes in the trigger and the disconnector. Ensure the long leg of the auto sear spring is on top of the

trigger retaining pin and in the groove in the head of the pin.

m. Push the hammer down until it locks in the cocked position. Refer to Figure 44.

Figure 44. The Hammer in the Cocked Position.

CAUTION

Ensure that all retaining pins are fully seated in the receiver.

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ORGANIZATIONAL MAINTENANCE MANUAL WITH REPAIR PARTS LIST FOR RIFLE, 7.62 MM, AK-47 (2009) - page 1