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FM 4-20.119 (FM 10-519)
TO 13C7-10-31
Airdrop of Supplies and Equipment:
Rigging 105-Millimeter Howitzers
MAY 2006
DISTRIBUTION RESTRICTION: Approved for public release; distribution is unlimited.
Headquarters
Department of the Army
Department of the Air Force
*FM 4-20.119 (FM 10-519)/TO 13C7-10-31
Field Manual
Headquarters
Department of the Army
No. 4-20.119 (10-519)
Department of the Air Force
Technical Order
Washington, DC, 10 May 2006
No. 13C7-10-31
Airdrop of Supplies and Equipment: Rigging
105-Millimeter Howitzers
Contents
Page
PREFACE
vi
INTRODUCTION
vii
Chapter 1
RIGGING M102 HOWITZER ON TYPE V PLATFORM
1-1
SECTION I - RIGGING HOWITZER WITH 17 BOXES OF AMMUNITION
FOR LOW-VELOCITY AIRDROP ON TYPE V PLATFORM
1-1
Description of Load
1-1
Preparing Platform
1-1
Building and Placing Honeycomb Stacks
1-3
Stowing Accompanying Load
1-6
Preparing Howitzer and Equipment
1-11
Covering Load
1-14
Stowing Collimator Box and Positioning Howitzer on Platform
1-15
Lashing Howitzer
1-17
Installing Suspension Slings and Safety Tie
1-18
Preparing Stowage Platform and Stowing Cargo Parachutes
1-19
Installing Extraction System
1-21
Installing Provisions for Emergency Restraints
1-23
Installing Release System
1-23
Placing Extraction Parachute
1-24
Marking Rigged Load
1-24
Equipment Required
1-26
SECTION II - RIGGING M102 HOWITZER WITH 23 BOXES OF
AMMUNITION FOR LOW-VELOCITY AIRDROP ON TYPE V PLATFORM . 1-27
Description of Load
1-27
Distribution Restriction: Approved for public release; distribution is unlimited.
*This publication supersedes FM 10-519/TO 13C7-10-31, 29 April 1987.
i
Contents
Stowing Accompanying Load
1-28
Preparing Howitzer and Equipment
1-29
Covering Load
1-31
Stowing Collimator Box and Positioning Howitzer on Platform
1-31
Lashing Howitzer
1-31
Installing Suspension Slings and Deadman's Tie
1-31
Preparing Stowage Platform and Stowing Cargo Parachutes
1-31
Installing Extraction System
1-33
Installing Provisions for Emergency Restraints
1-35
Installing Release System
1-35
Placing Extraction Parachute
1-35
Marking Rigged Load
1-35
Equipment Required
1-37
Chapter 2
RIGGING M102 HOWITZER WITH 1 ¼-TON HIGH MOBILITY
MULTIPURPOSE WHEELED VEHICLE (HMMWV) TRUCK AND
ACCOMPANYING AMMUNITION
2-1
Description of Load
2-1
Preparing Platform
2-1
Stowing Accompanying Load On The Platform
2-3
Installing Optional Drive-Off Aids on Platform
2-9
Building Honeycomb Stacks
2-10
Preparing the Howitzer
2-16
Preparing Truck
2-19
Stowing Howitzer Equipment and Ammunition in Truck
2-30
Positioning Howitzer and Truck on Platform
2-37
Lashing Howitzer and Truck
2-39
Installing and Safety Tieing Suspension Slings
2-44
Preparing Stowage Platform and Stowing Cargo Parachutes
2-46
Installing Extraction System
2-50
Installing Provisions for Emergency Restraints
2-51
Installing Release System
2-51
Placing Extraction Parachute
2-52
Marking Rigged Load
2-52
Equipment Required
2-54
Chapter 3
RIGGING M119 HOWITZER FOR LOW-VELOCITY AIRDROP ON
TYPE V PLATFORM
3-1
SECTION I - RIGGING M119 HOWITZER AND ACCOMPANYING
AMMUNITION
3-1
Description of Load
3-1
Preparing Platform
3-1
Stowing Accompanying Load
3-3
Building and Placing Honeycomb Stacks
3-8
Preparing Howitzer
3-12
Lifting and Positioning Howitzer
3-24
Lashing Howitzer
3-25
Stowing Additional Accompanying Load
3-27
Installing Suspension Slings, Antitumble Slings and Deadman’s Tie
3-29
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FM 4-20.119/TO 13C7-10-31
10 May 2006
Contents
Stowing Cargo Parachute
3-33
Installing Extraction System
3-35
Installing Provisions for Emergency Restraints
3-35
Installing Release System
3-37
Placing Extraction Parachute
3-38
Marking Rigged Load
3-38
Equipment Required
3-40
SECTION II - RIGGING M119 MILLIMETER HOWITZER,
ACCOMPANYING AMMUNITION AND 81-MILLIMETER MORTAR
3-42
Description of Load
3-42
Preparing Platform
3-42
Stowing Accompanying Load
3-44
Building and Placing Honeycomb Stacks
3-52
Preparing Howitzer
3-53
Lifting and Positioning Howitzer
3-53
Lashing Howitzer
3-53
Stowing Additional Accompanying Load
3-55
Installing Suspension Slings, Antitumble Slings and Deadman’s Tie
3-55
Stowing Cargo Parachutes
3-55
Installing Extraction System
3-57
Installing Provisions for Emergency Restraints
3-57
Installing Release System
3-57
Placing Extraction Parachute
3-57
Marking Rigged Load
3-57
Equipment Required
3-59
Chapter 4
RIGGING M119 HOWITZER WITH 1 1/4-TON HMMWV TRUCK AND
ACCOMPANYING AMMUNITION
4-1
Description of Load
4-1
Preparing Platform
4-1
Stowing Accompanying Load on Platform
4-3
Building and Positioning Honeycomb Stacks and Installing the Optional
Drive-Off Aids
4-7
Preparing Howitzer and Truck
4-9
Stowing Howitzer Equipment and Ammunition in Truck
4-9
Setting Howitzer and Truck on Platform and Installing Drive-Off Aids
on Truck
4-10
Positioning Additional Accompanying Load
4-12
Lashing Howitzer and Truck
4-13
Covering Howitzer with Honeycomb
4-17
Installing and Safetying Suspension Slings
4-18
Preparing Stowage Platform and Stowing Cargo Parachutes
4-21
Installing Extraction System
4-23
Installing Release System
4-24
Installing Provisions for Emergency Restraints
4-25
Placing Extraction Parachute
4-25
Marking Rigged Load
4-25
Equipment Requirements
4-27
10 May 2006
FM 4-20.119/TO 13C7-10-31
iii
Contents
Chapter 5
RIGGING TWO M119 HOWITZERS FOR LOW-VELOCITY AIRDROP
ON TYPE V PLATFORM
5-1
SECTION I-RIGGING HOWITZERS WITH EIGHTY-TWO BOXES OF
AMMUNITION
5-1
Description of Load
5-1
Preparing Platform
5-1
Stowing and Lashing First Group of Ammunition Boxes
5-3
Stowing and Lashing Second Group of Ammunition Boxes
5-10
Building and Placing Honeycomb Stacks
5-14
Preparing Howitzers
5-20
Placing Howitzer on Honeycomb Stacks, Lashing howitzer, and Installing
Protective Honeycomb
5-24
Lashing Howitzers
5-27
Installing Suspension Slings and Covering Load
5-33
Preparing Stowage Platform and Stowing Cargo Parachutes
5-34
Installing Extraction System
5-39
Installing Release System
5-40
Installing Provisions for Emergency Restraints
5-41
Placing Extraction Parachutes
5-41
Mark Rigged Load
5-41
Equipment Required
5-43
SECTION II-RIGGING HOWITZERS WITH SIXTY-THREE BOXES OF
AMMUNITION
5-45
Description of Load
5-45
Preparing Platform
5-45
Stowing and Lashing First Group of Ammunition Boxes
5-47
Stowing and Lashing Second Group of Ammunition Boxes
5-52
Building and Placing Honeycomb Stacks
5-56
Preparing Howitzers
5-58
Placing Howitzers on Platform
5-58
Lashing Howitzers
5-59
Covering the Load
5-66
Installing Suspension Slings
5-68
Preparing Stowage Platform and Stowing Cargo Parachutes
5-70
Installing Extraction System
5-71
Installing Release System
5-72
Installing Provisions for Emergency Restraints
5-72
Placing Extraction Parachutes
5-72
Marking Rigged Load
5-72
Equipment Required
5-74
SECTION III - RIGGING HOWITZERS WITH TWO 81-MILLIMETER
MORTARS
5-76
Description of Load
5-76
Preparing Platform
5-76
Stowing and Lashing First Group of Ammunition Boxes
5-76
Packaging and Securing Mortar Components
5-76
Rigging Howitzer
5-76
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FM 4-20.119/TO 13C7-10-31
10 May 2006
Contents
Marking Rigged Load
5-83
Equipment Required
5-83
Chapter 6
RIGGING M101A1 HOWITZER FOR LOW-VELOCITY AIRDROP
ON TYPE V PLATFORM
6-1
Description of Load
6-1
Preparing Platform
6-1
Building and Placing Honeycomb Stacks
6-3
Stowing Accompanying Load
6-5
Preparing Howitzer
6-8
Placing Howitzer on Platform
6-10
Constructing Endboard and Lashing Rear Ammunition Stack to Platform
6-11
Lashing Howitzer
6-14
Installing Suspension Slings
6-16
Stowing Cargo Parachutes
6-18
Installing Extraction System
6-19
Installing Release System
6-20
Installing Provisions for Emergency Restraints
6-21
Placing Extraction Parachutes
6-21
Marking Rigged Load
6-21
Equipment Required
6-21
GLOSSARY
Glossary-1
REFERENCES
References-1
10 May 2006
FM 4-20.119/TO 13C7-10-31
v
Preface
SCOPE
This manual shows how to rig the M102, M119, and M101A1 105-millimeter howitzers for low-velocity
airdrop from a C-130 or C-17 aircraft. The manual includes procedures and equipment for rigging the M102
and M119 105-millimeter howitzer with the 1 ¼-ton High Mobility Multipurpose Wheeled Vehicle (HMMWV)
truck as the prime mover on a 32-foot, type V airdrop platform for low-velocity airdrop from a C-130 or C-17
aircraft. In addition, procedures are given for rigging two M119 105-millimeter howitzers on a single platform
with two different ammunition loads and with two 81-millimeter mortars for a low-velocity airdrop from C-130
or C-17 aircraft. The manual is designed for use by all parachute riggers.
USER INFORMATION
The proponent of this publication is United States Army Training and Doctrine Command (TRADOC). You are
encouraged to report any errors or omissions and to suggest ways of making this a better manual.
This publication applies to the Active Army, the Army National Guard (ARNG)/Army National Guard of the
United States (ARNGUS), and the United States Army Reserve (USAR) unless otherwise stated.
Army personnel, send your comments on DA Form 2028 (Recommended Changes to Publications and Blank
Forms) directly to:
Director
Aerial Delivery and Field Services Department
USA Quartermaster Center and School
710 Adams Avenue
Fort Lee, Virginia 23801-1502
Air Force personnel, send your reports on AFTO Form 22 (Technical Manual (TM) Change Recommendation
and Reply) through your respective command Weapons and Tactics to:
Headquarters
Air Mobility Command (AMC/A39T)
402 Scott Drive, Unit 3AI
Scott AFB, Illinois 62225-5302
AFSOC personnel in Special Operations Command, send your reports on AFTO Form 22. HQ AMC/A39T
will consolidate and forward changes to:
Director
Aerial Delivery and Field Services Department
USA Quartermaster Center and School
710 Adams Avenue
Fort Lee, Virginia 23801-1502
Also send an information copy of AFTO Form 22 to:
WR-ALC/LEET
295 Byron Street
Robins AFB, Georgia 31098-1611
10 May 2006
FM 4-20.119/TO 13C7-10-31
vi
Introduction
Introduction
DESCRIPTION OF ITEMS
The descriptions and unrigged data for the items covered in this manual are provided below.
• The unrigged M102, 105-millimeter howitzer (mounted on an M31 carriage) with an M137E1
cannon tube and roll-over protection structure weighs 3,680 pounds. Its length is 256 inches,
reducible to 206 inches. Its height is 68 inches reducible to 62 inches. Its width is 91 inches with
dual wheels and 75 inches with single wheels. The M102 howitzer shown in Figure 1 is equipped
with single wheels. The rigging procedures for the howitzer with dual wheels are the same. The
howitzer shown in Chapter 1, Section I, is rigged with 17 boxes of ammunition weighing 2,040
pounds. The howitzer shown in Chapter 1, Section II is rigged with 23 boxes of ammunition
weighing 2,760 pounds. The howitzer shown in Chapter 2 is rigged with a 1 1/4-ton High
Mobility Multipurpose Wheeled Vehicle (HMMWV) truck as its primer mover and with 30 boxes
of ammunition weighing 3,600 pounds.
Figure 1. M102, 105-Millimeter Howitzer
• The unrigged M119, 105-millimeter howitzer weighs 4,190 pounds and is shown in Figure 2. Its
length is 240 inches, reducible to 192 inches. Its width is 70 inches. Its height is 94 inches,
reducible to 54 inches. The howitzer shown in Chapter 3, Section I is rigged with 30 boxes of
ammunition and 7 boxes of fuzes weighing 3,713 pounds. The howitzer shown in Section II has
the same ammunition load and an 81-millimeter mortar weighing 350 pounds. The howitzers
shown in Chapter 4 are rigged with 30 boxes of ammunition, 7 boxes of fuzes, and 1 1/4-ton
HMMWV truck. Two M119 howitzers are shown in Chapter 5 rigged with 82 boxes of
ammunition on the same platform, as well as a lighter version of this load and a load which
includes two 81-millimeter mortars.
10 May 2006
FM 4-20.119/TO 13C7-10-31
vii
Introduction
Figure 2. M119, 105-Millimeter Howitzer
• The unrigged M101A1, 105-millimeter howitzer weighs 5,236 pounds. It is 236 inches long, 84
inches wide and 62 inches high. Chapter 6 shows this howitzer rigged with 21 boxes of
ammunition weighing 2,100 pounds.
SPECIAL CONSIDERATIONS
Special considerations for this manual are described below.
The loads covered in this manual may include hazardous material as defined in AFMAN
24-204(I)/TM 38-250. If included, the hazardous materials must be packaged, marked, and labeled
as required by AFMAN 24-204(I)/TM 38-250.
CAUTION
Only ammunition listed in FM 4-20.153/MCRP 4-11.3B/TO 13C7-18-41
may be airdropped.
A copy of this manual must be available to the joint airdrop inspectors during the before- and after-loading
inspections.
viii
FM 4-20.119/TO 13C7-10-31
10 May 2006
Chapter 1
Rigging M102 Howitzer on Type V Platform
SECTION I - RIGGING HOWITZER WITH 17 BOXES OF AMMUNITION FOR
LOW-VELOCITY AIRDROP ON TYPE V PLATFORM
DESCRIPTION OF LOAD
1-1. The M102, 105-millimeter howitzer mounted on an M31 carriage with an M137E1 cannon tube and
roll-over protection structure is rigged on a 16-foot, type V airdrop platform. It may be airdropped with an
accompanying load. The gun equipment and 17 boxes of ammunition are shown in this section. This load
requires two G-11B cargo parachutes.
PREPARING PLATFORM
1-2. Prepare a 16-foot, type V airdrop platform as described below.
• Inspecting platform. Inspect, or assemble and inspect, the platform according to TM 10-1670-
268-20&P/TO 13C7-52-22.
• Installing tandem links. Install tandem links to the front and rear of each rail as shown in Figure
1-1.
• Installing and numbering clevises. Bolt and number 34 clevis assemblies as shown in Figure
1-1.
10 May 2006
FM 4-20.119/TO 13C7-10-31
1-1
Chapter 1
Notes. 1. The nose bumper may or may not be installed.
2. Measurements given in this chapter are from the front edge of the platform, NOT from
the front edge of the nose bumper.
CLEVISES
17A THROUGH 1A
LEFT
REAR
FRONT
RIGHT
CLEVISES
17 THROUGH 1
Steps:
1. Install a tandem link on the front of each platform side rail using holes 1, 2, and 3.
2. Install clevises on bushings 1, 2, and 3 on each front tandem link.
3. Install a tandem link on the rear of each platform side rail using holes 30, 31, and 32.
4. Install a clevis on bushing 3 on each rear tandem link.
5. Starting at the front of each platform side rail, install clevises on each platform side rail
using the bushings bolted on holes 4, 5, 15, 17, 18, 19, 20, 22, 25, 26, 27, 28, and 29.
6. Starting at the front of the platform, number the clevises bolted to the right side from 1
through 17 and those bolted to the left side from 1A through 17A.
7. Label the tie-down rings according to FM 4-20.102/MCRP 4-11.3J/NAVSEA SS400-AB-
MMO-010/TO 13C7-1-5.
Figure 1-1. Platform Prepared
1-2
FM 4-20.119/TO 13C7-10-31
10 May 2006
Rigging M102 Howitzer on Type V Platform
BUILDING AND PLACING HONEYCOMB STACKS
1-3. Build the honeycomb stacks as shown in Figure 1-2. Place the stacks on the platform as shown in
Figure 1-3.
Stack 1
Stack 2
Stack
Pieces
Width
Length
Material
Instructions
Number
(inches)
(inches)
1
7
36
12
Honeycomb
Glue to form stack.
1
36
12
¾-inch
Glue plywood flush on top of
Plywood
honeycomb stack.
2
10
36
12
Honeycomb
Glue to form stack.
Figure 1-2. Honeycomb Stacks 1 Through 4 Prepared
10 May 2006
FM 4-20.119/TO 13C7-10-31
1-3
Chapter 1
Stack 3
Stack 4
Stack
Pieces
Width
Length
Material
Instructions
Number
(inches)
(inches)
3
6
12
12
Honeycomb
Glue to form stack.
1
12
30
Honeycomb
Place honeycomb flush on stack to form
a bridge to the rear.
5
12
12
Honeycomb
Stack honeycomb over bridge flush with
base.
1
12
6
Honeycomb
Place honeycomb on rear edge of stack.
4
6
48
12
Honeycomb
Form stack. Center honeycomb under
bridge from stack 3.
2
18
12
Honeycomb
Place honeycomb on each side of bridge
and flush with stack.
1
48
12
Honeycomb
Place honeycomb flush over bridge and
adjacent pieces.
4
12
12
Honeycomb
Place two pieces flush on each side of
the stack.
Figure 1-2. Honeycomb Stacks 1 Through 4 Prepared (Continued)
1-4
FM 4-20.119/TO 13C7-10-31
10 May 2006
Rigging M102 Howitzer on Type V Platform
Notes. 1. All measurements are given in inches.
2. This drawing is not drawn to scale.
6
39
22
38
Stack
Stack
Stack
Stack
4
3
2
1
Stack Number
Position of Stack on Platform
Place stack:
1
Centered 38 inches from front edge of platform.
2
Centered 22 inches from stack 1.
3
Centered 39 inches from stack 2.
4
Centered 6 inches from stack 3.
Figure 1-3. Honeycomb Stacks Placed on Platform
10 May 2006
FM 4-20.119/TO 13C7-10-31
1-5
Chapter 1
STOWING ACCOMPANYING LOAD
CAUTION
Only ammunition listed in FM 4-20.153/MCRP 4-11.3B/TO 13C7-18-41
may be airdropped.
1-4. Stow the accompanying load of 17 boxes of ammunition weighing 2,040 pounds as shown in Figures
1-4 through 1-8. Make sure the accompanying load meets the restrictions and requirements as outlined in
FM 4-20.102/MCRP 4-11.3J/NAVSEA SS400-AB-MMO-010/TO 13C7-1-5. When hazardous materials
are rigged as part of the load, they must be packaged, marked and labeled according to AFMAN
24-204(I)/TM 38-250.
5
6
3
4
1
2
1 Center two 74- by 24-inch pieces of honeycomb between the side rails with their front
edges flush with the front edge of the platform.
2 Center two 74- by 36-inch pieces of honeycomb between the side rails with their front
edges against the rear edge of stack 2.
3 Center two 62- by 36-inch pieces of honeycomb between the side rails with their rear edge
flush with the rear edge of the platform.
4 Lay two 15-foot lashings from front to rear on the front pieces of honeycomb.
5 Lay one 15-foot lashing from side to side on the middle pieces of honeycomb.
6 Lay one 15-foot lashing from side to side on the rear pieces of honeycomb.
Figure 1-4. Honeycomb and Lashings Placed on Platform
1-6
FM 4-20.119/TO 13C7-10-31
10 May 2006
Rigging M102 Howitzer on Type V Platform
1
2
3
1
Set four boxes of ammunition on top of the lashings and honeycomb on the front of the
platform. Place two more boxes on top with their front edges aligned with the front boxes.
Secure each lashing with a D-ring and load binder.
Note. Two boxes of antipersonnel (APERS) rounds may be substituted for the two rear boxes of
ammunition in this stack. This ammunition will extend past the honeycomb.
2
Set six boxes of ammunition on the lashing and honeycomb in the middle of the platform.
Secure the lashing with a D-ring and load binder.
3
Set five boxes of ammunition on the lashing and honeycomb on the rear of the platform.
Secure with a D-ring and load binder.
Figure 1-5. Boxes of Ammunition Secured
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FM 4-20.119/TO 13C7-10-31
1-7
Chapter 1
6
6
3
5
4
1
2
4
2
1
7
1
Form a 30-foot lashing according to FM 4-20.102/MCRP 4-11.3J/NAVSEA SS400-AB-
MMO-010/TO 13C7-1-5. Place the double D-ring at the center of the bottom boxes at the
front of the platform.
2
Pass one end of the lashing through the handle of the bottom box, through clevis 4, up
through the handle of the top box, and back to the center of the top boxes.
3
Pass the other end of the lashing to the other side of the load as in step 2, using clevis
4A.
4
Secure the lashing with two D-rings and a load binder at the center of the top ammunition
boxes.
5
Repeat steps 1 through 4, running a lashing around the rear of the boxes using clevises 1
and 1A.
6
Tie the lashings together with two lengths of type III nylon cord on the right and left sides
of the load.
7
Pass the free end of a 15-foot lashing through clevis 2 and through its own D-ring. Pass
the free end of the 15-foot lashing through clevis 2A and through its own D-ring. Pass
each lashing through the handle of the top box and to the center of the boxes. Secure the
lashings on top of the boxes with two D-rings and a load binder.
Figure 1-6. Boxes of Ammunition Lashed on Front of Platform
1-8
FM 4-20.119/TO 13C7-10-31
10 May 2006
Rigging M102 Howitzer on Type V Platform
4
3
1
2
10
8
6
1
Pass the free end of a 15-foot lashing through clevis 6 and through its own D-ring. Pull
the lashing taut, and run it through the rear handles of the boxes. Fit a D-ring to the end
of the lashing, and hook the D-ring to clevis 6A with a load binder.
2
Pass the free end of a 15-foot lashing through clevis 10 and through its own D-ring. Pull
the lashing taut, and run it through the front handles of the boxes. Fit a D-ring to the end
of the lashing, and hook the D-ring to clevis 10A with a load binder.
3
Pass the free end of a 15-foot lashing through clevis 8 and through its own D-ring. Pull
the lashing over the tops of the boxes. Fit a D-ring to the end of the lashing and hook the
D-ring to clevis 8A with a load binder.
4
Tie the lashings together with two lengths of type III nylon cord on the right and left sides
of the load.
Figure 1-7. Boxes of Ammunition Lashed to Middle of Platform
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FM 4-20.119/TO 13C7-10-31
1-9
Chapter 1
4
3
2
1
17
16
12
1
Pass the free end of a 15-foot lashing through clevis 12 and through its own D-ring. Pull
the lashing taut and run it though the rear handles of the boxes. Fit a D-ring to the end of
the lashing, and hook the D-ring to clevis 12A with a load binder.
2
Pass the free end of a 15-foot lashing through clevis 17 and through its own D-ring. Run
the free end of a 15-foot lashing through clevis 17A and through its own D-ring. Secure
the lashing with two D-rings and a load binder.
3
Pass the free end of a 15-foot lashing through clevis 16 and through its own D-ring. Run
the free end of a 15-foot lashing through clevis 16A and through its own D-ring. Secure
the lashings with two D-rings and a load binder.
4
Tie the lashings together with two lengths of type III nylon cord on the right and left sides
of the load.
Figure 1-8. Boxes of Ammunition Lashed to Rear of Platform
1-10
FM 4-20.119/TO 13C7-10-31
10 May 2006
Rigging M102 Howitzer on Type V Platform
PREPARING HOWITZER AND EQUIPMENT
1-5. Prepare the howitzer as shown in Figures 1-9 and 1-10 and as described below. Construct the
collimator box as shown in Figure 1-11.
• Stowing Equipment. Place the section tools and base plate anchoring stakes in the section chest.
• Securing Rammer Staff. Secure the rammer staff assembly on the left side of the trails with its
own securing strap. Safety it with type III nylon cord.
4
2
3
1
1
Fasten the straps on the sight case. Tie the case to the howitzer with two lengths of type
III nylon cord.
2
Place a 12- by 36-inch piece of honeycomb in front of the sight case.
3
Set the section chest against the honeycomb in front of the sight case.
4
Pass the ends of a 15-foot lashing down each side of the section chest, through the
handles, around the trails, and back up through the handles. Secure the lashing on top of
the chest with a D-ring and a load binder.
Figure 1-9. Sight Case and Section Chest Secured
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FM 4-20.119/TO 13C7-10-31
1-11
Chapter 1
4
5
3
1
2
6
1
Secure the gun in the out-of-battery position and lock the travel lock.
2
Cover the sights and breechblock with the cloth cover provided. Plug the muzzle with the
plug provided.
3
Place a 36- by 96-inch sheet of honeycomb over the gun tube. Notch the honeycomb 5
inches deep at both rear corners to clear the sights. Tape the edges of the honeycomb.
Use type III nylon cord to tie the honeycomb in place.
4
Bend an 18- by 24-inch piece of honeycomb over each sight. Tape the edges of the
honeycomb. Tie the honeycomb in place with type III nylon cord.
5
Place a 36- by 48-inch piece of honeycomb over the breechblock. Make a 5- by 5-inch
cutout to allow for the breech operator handle. Tape the edges of the honeycomb. Use
two lengths of type III nylon cord to tie the honeycomb in place.
6
Secure the aiming stakes on the right side of the gun with type III nylon cord.
7
Pad each wheel support arm with cellulose wadding (not shown).
Figure 1-10. Howitzer Prepared
1-12
FM 4-20.119/TO 13C7-10-31
10 May 2006
Rigging M102 Howitzer on Type V Platform
2
1
1
Cut five 27- by 36-inch pieces of honeycomb. Make an 11- by 27-inch cutout in the center
of three pieces. Glue the three pieces with cutouts flush over a solid piece.
2
Pad the collimator generously with cellulose wadding and place it in the honeycomb box.
3
Tie the remaining solid piece of honeycomb flush over the box with lengths of 1/2-inch
tubular nylon webbing (not shown).
Figure 1-11. Collimator Box Constructed
10 May 2006
FM 4-20.119/TO 13C7-10-31
1-13
Chapter 1
COVERING LOAD
1-6. Cover the load as shown in Figure 1-12.
1
2
1
Cover the breech and gun tube with a 10- by 12-foot piece of cotton duck cloth.
2
Secure it to convenient points on the gun with type III nylon cord.
Figure 1-12. Load Covered
1-14
FM 4-20.119/TO 13C7-10-31
10 May 2006
Rigging M102 Howitzer on Type V Platform
STOWING COLLIMATOR BOX AND POSITIONING HOWITZER ON
PLATFORM
1-7. Stow the collimator box on the load and position the howitzer on the platform as shown in Figure 1-
13.
2
1
1 Attach a 9-foot (2-loop), type XXVI nylon sling to each lifting point on the gun trails. Safety
the pin in the lifting point with type III nylon cord. Extend the slings upward to the crane
hook.
2 Pad each wheel support arm. Route an 11-foot (2-loop), type XXVI nylon sling around
each wheel support arm and through its own loop. Extend the slings upward to the crane.
Figure 1-13. Collimator Box Stowed and Howitzer Positioned on Platform
10 May 2006
FM 4-20.119/TO 13C7-10-31
1-15
Chapter 1
5
4
3
9
3 Center the collimator box lengthwise on the middle stack of ammunition boxes flush
against stack 3.
4 Pass the free end of a 15-foot lashing through clevis 9 and through its own D-ring. Pull the
lashing over the top of the collimator box. Fit a D-ring to the end of the lashing and hook
the D-ring to clevis 9A with a load binder.
5 Set the howitzer on the honeycomb stacks with the breechblock on stack 3 and the
baseplate against stack 2. The lunette must overhang the rear of the platform 16 inches.
6 Remove the lifting slings (not shown)
Figure 1-13. Collimator Box Stowed and Howitzer Positioned on Platform (Continued)
1-16
FM 4-20.119/TO 13C7-10-31
10 May 2006
Rigging M102 Howitzer on Type V Platform
LASHING HOWITZER
1-8. Lash the howitzer to the platform with fourteen 15-foot lashings as shown in Figure 1-14. Install
and safety the lashings according to FM 4-20.102/MCRP 4-11.3J/NAVSEA SS400-AB-MMO-010/TO
13C7-1-5.
9
13
7
1
5
3
11
3
15
14
13
11
7
5
Lashing
Tiedown
Instructions
Number
Clevis
Number
Pass lashing:
1
3
Around right wheel support arm.
2
3A
Around left wheel support arm.
3
5
Under recoil rail assembly and around tube.
4
5A
Under recoil rail assembly and around tube.
5
7
Around right wheel support arm.
6
7A
Around left wheel support arm.
7
11
Around right trail.
8
11A
Around left trail.
9
13
Through lunette.
10
13A
Through lunette.
11
14
Around right trail.
12
14A
Around left trail.
13
15
Around right trail.
14
15A
Around left trail.
Figure 1-14. Lashings Installed
10 May 2006
FM 4-20.119/TO 13C7-10-31
1-17
Chapter 1
INSTALLING SUSPENSION SLINGS AND SAFETY TIE
1-9. Install the suspension slings and safety
(deadman's) tie according to FM
4-20.102/MCRP 4-
11.3J/NAVSEA SS400-AB-MMO-010/TO 13C7-1-5 and as shown in Figure 1-15.
4
1
2
3
1
Place the bell portion of a large clevis onto the end loop of a 16-foot (2-loop), type XXVI
suspension sling.
2
Bolt the clevis to a tandem link using the 1-inch hole in the top of the link.
3
Repeat steps 1 and 2 for the other three tandem links.
4
Extend the slings to a crane hook or other stationary point. Install the deadman's tie as
outlined in FM 4-20.102/MCRP 4-11.3J/NAVSEA SS400-AB-MMO-010/TO 13C7-1-5.
Figure 1-15. Suspension Slings and Deadman’s Tie Installed
1-18
FM 4-20.119/TO 13C7-10-31
10 May 2006
Rigging M102 Howitzer on Type V Platform
PREPARING STOWAGE PLATFORM AND STOWING CARGO
PARACHUTES
1-10. Prepare the stowage platform and stow the cargo parachutes as described below.
• Preparing Stowage Platform. Prepare the cargo parachute stowage platform as shown in Figure
1-16.
• Stowing Parachutes. Prepare and stow two G-11 cargo parachutes according to FM 4-
20.102/MCRP 4-11.3J/NAVSEA SS400-AB-MMO-010/TO 13C7-1-5 and as shown in Figure 1-
17.
2
3
1
1
Glue three 12- by 36-inch pieces of honeycomb flush with one 36-inch end of a 36- by 48-
inch piece of honeycomb.
2
Center the stack on the rear of the trails with the long piece of honeycomb facing the front.
3
Tape the top 48-inch edges of the stack. Tie the stack to the trails with two lengths of
type III nylon cord.
Figure 1-16. Stowage Platform Prepared and Stowed
10 May 2006
FM 4-20.119/TO 13C7-10-31
1-19
Chapter 1
1
2
1
Stack two G-11 cargo parachutes on the stowage platform. Install them on the load
according to FM 4-20.102/MCRP 4-11.3J/NAVSEA SS400-AB-MMO-010/TO 13C7-1-5.
2
Tie the restraint strap to the lifting handles on the trails.
Figure 1-17. Cargo Parachutes Stowed
1-20
FM 4-20.119/TO 13C7-10-31
10 May 2006
Rigging M102 Howitzer on Type V Platform
INSTALLING EXTRACTION SYSTEM
1-11. Install the components of the extraction force transfer coupling (EFTC) system according to FM 4-
20.102/MCRP 4-11.3J/NAVSEA SS400-AB-MMO-010/TO 13C7-1-5 and as shown in Figure 1-18. If
applicable install the extraction parachute jettison system (EPJS) according to FM 4-20.102/MCRP 4-
11.3J/NAVSEA SS400-AB-MMO-010/TO 13C7-1-5.
2
1
1 Install the EFTC mounting bracket to the rear set of holes on the left platform side rail.
2 Install the actuator according to FM 4-20.102/MCRP 4-11.3J/NAVSEA SS400-AB-MMO-
010/TO 13C7-1-5.
Figure 1-18. EFTC Installed
10 May 2006
FM 4-20.119/TO 13C7-10-31
1-21
Chapter 1
5
4
3
3 Install the latch assembly and latch assembly adapter to the extraction bracket according
to FM 4-20.102/MCRP 4-11.3J/NAVSEA SS400-AB-MMO-010/TO 13C7-1-5.
4 Install a 16-foot cable according to FM 4-20.102/MCRP 4-11.3J/NAVSEA SS400-AB-
MMO-010/TO 13C7-1-5. Tie it to the carrying handle of the first ammunition box at the
rear of the load with 1/4-inch, type I cotton webbing.
5 Install a 16-foot deployment sling on the load. Bolt it to both the latch assembly and the
deployment clevis of the G-11s. S-fold the slack and tie the folds with 1/4-inch, type I
cotton webbing.
Figure 1-18. EFTC Installed (Continued)
1-22
FM 4-20.119/TO 13C7-10-31
10 May 2006
Rigging M102 Howitzer on Type V Platform
INSTALLING PROVISIONS FOR EMERGENCY RESTRAINTS
1-12. Install provisions for emergency restraints on the front of the platform according to FM
4-
20.102/MCRP 4-11.3J/NAVSEA SS400-AB-MMO-010/TO 13C7-1-5.
INSTALLING RELEASE SYSTEM
1-13. Prepare and install an M-1 cargo parachute release according to FM
4-20.102/MCRP
4-
11.3J/NAVSEA SS400-AB-MMO-010/TO 13C7-1-5 and as shown in Figure 1-19.
1
2
1
Prepare and install an M-1 cargo parachute release as described in FM 4-20.102/MCRP
4-11.3J/NAVSEA SS400-AB-MMO-010/TO 13C7-1-5. Set the release on the load cover
directly above the breechblock.
2
Tie the release to convenient points on the load with two lengths of type III nylon cord.
Figure 1-19. M-1 Release Installed
10 May 2006
FM 4-20.119/TO 13C7-10-31
1-23
Chapter 1
PLACING EXTRACTION PARACHUTE
1-14. Select the extraction parachute and extraction line needed using the extraction line requirements
table in FM 4-20.102/MCRP 4-11.3J/NAVSEA SS400-AB-MMO-010/TO 13C7-1-5. Rig the extraction
line in an extraction line bag according to TM 10-1670-286-20/TO13C5-2-41. Place the extraction
parachute and extraction line on the load for installation in the aircraft.
MARKING RIGGED LOAD
1-15. Mark the rigged load as described in FM 4-20.102/MCRP 4-11.3J/NAVSEA SS400-AB-MMO-
010/TO 13C7-1-5 and as shown in Figure 1-20. If the accompanying load varies from the one shown, the
weight, height, center of balance (CB), and parachute requirements must be recomputed.
1-24
FM 4-20.119/TO 13C7-10-31
10 May 2006
Rigging M102 Howitzer on Type V Platform
CAUTION
Make the final rigger inspection required by FM 4-20.102/MCRP 4-
11.3J/NAVSEA SS400-AB-MMO-010/TO 13C7-1-5 before the load
leaves the rigging site.
CB
RIGGED LOAD DATA
Weight: Load shown
8,060 pounds
Maximum load allowed
9,000 pounds
Height
90 1/2 inches
Width
108 inches
Overall Length
210 inches
Overhang: Front
0 inches
Rear (EFTC)
18 inches
Rear (EPJS)
30 inches
Center of Balance (from front edge of platform)
98 inches
Figure 1-20. M102 Howitzer Rigged for Low-Velocity Airdrop on a Type V Platform
10 May 2006
FM 4-20.119/TO 13C7-10-31
1-25
Chapter 1
EQUIPMENT REQUIRED
1-16. Use the equipment listed in Table 1-1 to rig this load. The equipment required for rigging the
accompanying load is also included.
Table 1-1. Equipment Required for Rigging the M102 Howitzer
for Low-Velocity Airdrop on Type V Platform
National Stock Number
Item
Quantity
8040-00-273-8713
Adhesive, paste, 1-gallon
As required
Clevis, suspension:
4030-00-678-8562
3/4-inch (medium) emergency restraint
4
4030-00-090-5354
1-inch (large)
6
8305-00-184-2034
Cloth, cotton duck, 60-inch
8 yards
4020-00-246-0688
Cord, nylon, type III
As required
1670-00-434-5785
Coupling, airdrop, extraction force transfer with
1
16-foot cable
1670-00-360-0328
Cover, clevis, large
2
8135-00-664-6958
Cushioning material, packaging, cellulose wadding
As required
1670-01-183-2678
Leaf, extraction line
2
1670-01-064-4452
Line, drogue, 60-foot (1-loop)
1
Line, extraction, type XXVI nylon webbing:
1670-01-062-6313
60-foot (3-loop)
1
Or
1670-01-107-7651
140-foot (3-loop)
2
1670-01-493-6420
Link assembly, two-point, 5 ½-inch
1
1670-00-753-3928
Pad, energy-dissipating, honeycomb
10 sheets
Parachute:
1670-01-016-7841
Cargo, G-11
2
1670-01-063-3716
Cargo, extraction, 22-foot
1
1670-01-063-3715
Drogue, 15-foot
1
Platform, airdrop, type V, 16-foot
1670-01-353-8425
Bracket assembly, coupling
1
1670-01-353-8424
Bracket assembly, extraction
1
1670-01-162-2372
Clevis assembly
34
1670-01-162-2381
Tandem link
4
5530-00-218-8073
Plywood, 3/4-inch
1 sheet
1670-01-097-8816
Release, cargo parachute, M-1
1
1-26
FM 4-20.119/TO 13C7-10-31
10 May 2006
Rigging M102 Howitzer on Type V Platform
Table 1-1. Equipment Required for Rigging the M102 Howitzer
for Low-Velocity Airdrop on Type V Platform (Continued)
National Stock Number
Item
Quantity
Sling, cargo airdrop:
For deployment line:
1670-01-063-7761
16-foot (2-loop), type XXVI nylon webbing
1
For lifting:
1670-01-062-6304
9-foot (2-loop), type XXVI nylon webbing
2
1670-01-063-7760
11-foot (2-loop), type XXVI nylon webbing
2
For riser extension:
1670-01-062-6302
20-foot (2-loop), type XXVI nylon webbing
2
For suspension:
1670-01-063-7761
16-foot (2-loop), type XXVI nylon webbing
4
5340-00-040-8219
Strap parachute release, multicut
2
7515-00-266-5016
Tape, adhesive, 2-inch
As required
1670-00-937-0271
Tie-down assembly, 15-foot
34
1670-01-483-8259
Tow Release Mechanism (H-block for C-17)
1
Webbing:
8305-00-268-2411
Cotton, 1/4-inch, type I
As required
Nylon:
8305-00-082-5752
Tubular, 1/2-inch
As required
8305-00-263-3598
Type VIII webbing
As required
SECTION II - RIGGING M102 HOWITZER WITH 23 BOXES OF AMMUNITION
FOR LOW-VELOCITY AIRDROP ON TYPE V PLATFORM
DESCRIPTION OF LOAD
1-17. This load is rigged the same as the M102 howitzer in Section I, except for the addition of six
ammunition boxes, the placement of the collimator, and the placement of the EFTC actuator bracket. This
load requires two G-11 cargo parachutes.
PREPARING PLATFORM
1-18. Prepare the platform as described in paragraph 1-2 and as shown in Figure 1-1.
BUILDING AND PLACING HONEYCOMB STACKS
1-19. Build four honeycomb stacks as shown in Figure 1-2 and according to FM 4-20.102/MCRP 4-
11.3J/NAVSEA SS400-AB-MMO-010/TO 13C7-1-5. Place them on the platform as shown in Figure 1-3.
10 May 2006
FM 4-20.119/TO 13C7-10-31
1-27
Chapter 1
STOWING ACCOMPANYING LOAD
1-20. The accompanying load of 23 boxes weighs 2,760 pounds. The ammunition is rigged as shown in
Section I, Figures 1-4 through 1-8, except the stack of ammunition in the middle of the platform. Stow the
front and rear stack of ammunition according to Figures 1-5, 1-6 and 1-8. Secure the middle stack
according to Figures 1-4 and 1-21.
5
4
1
5
2
3
10
8
6
1
Set 12 boxes of ammunition on the lashing and honeycomb in the middle of the platform.
Secure the lashing with a D-ring and a load binder.
2
Form a 30-foot lashing according to FM 4-20.102/MCRP 4-11.3J/NAVSEA SS400-AB-
MMO-010/TO 13C7-1-5. Pass the ends of the lashing through the rear handles of the
lower row of boxes, through clevises 6 and 6A, and through the rear handles of the upper
row of boxes. Secure the lashing at the rear of the boxes with two D-rings and a load
binder.
3
Form a 30-foot lashing according to FM 4-20.102/MCRP 4-11.3J/NAVSEA SS400-AB-
MMO-010/TO 13C7-1-5. Pass the ends of the lashing through the front handles of the
lower row of boxes, through clevises 10 and 10A, and through the rear handles of the
upper row of boxes. Secure the lashing at the front of the boxes with two D-rings and a
load binder.
4
Pass the 15-foot lashing through clevis 8 and through its own D-ring. Pull the lashing over
the top of the boxes. Fit a D-ring to the end of the lashing and secure the lashing to clevis
8A with a load binder.
5
Tie two lengths of type III nylon cord between the lashings on the ends of the boxes to
keep the lashing in place.
Figure 1-21. Boxes of Ammunition Lashed to Middle of Platform
1-28
FM 4-20.119/TO 13C7-10-31
10 May 2006
Rigging M102 Howitzer on Type V Platform
PREPARING HOWITZER AND EQUIPMENT
1-21. Prepare the howitzer as described in paragraph 1-5 and as shown in Figures 1-9 and 1-10. Stow the
external air transport slings as shown in Figure 1-22. Prepare the collimator as shown in Figure 1-23.
1
4
2
3
9
1
Wrap the external air transport slings in an A-22 cargo bag assembly.
2
Center the bag on the middle ammunition stack flush with the rear edge of the stack.
3
Pass a 15-foot lashing through clevis 9 and through its own D-ring. Pull the lashing over
the sling bag. Fit a D-ring to the end of the lashing and secure the lashing to clevis 9A
with a load binder.
4
Tie the bag to the lashing placed in Figure 1-21, steps 2 and 3 in two places with 1/2-inch
tubular nylon webbing.
Figure 1-22. External Air Transport Slings Stowed
10 May 2006
FM 4-20.119/TO 13C7-10-31
1-29
Chapter 1
1
2
3
1
Cut five 16- by 36-inch pieces of honeycomb. Make a 9- by 26-inch cutout in the center of
three of the pieces. Glue the three pieces with cutouts flush over a solid piece.
2
Pad the collimator generously with cellulose wadding and place it in the collimator box.
3
Place the remaining solid piece of honeycomb flush over the box, and tape the box shut
with 2-inch cloth backed tape.
Figure 1-23. Collimator Prepared
1-30
FM 4-20.119/TO 13C7-10-31
10 May 2006
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