FM 4-20.108 Airdrop of Supplies and Equipment: Rigging Military Utility Vehicles (SEPTEMBER 2007) - page 1

 

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FM 4-20.108 Airdrop of Supplies and Equipment: Rigging Military Utility Vehicles (SEPTEMBER 2007) - page 1

 

 

*FM 4-20.108 /TO 13C7-2-491
Field Manual
Headquarters
No. 4-20.108
Department of the Army
Department of the Air Force
Technical Order
Washington, DC,10 September 2007
No. 13C7-2-491
Airdrop of Supplies and Equipment:
Rigging Military Utility Vehicles
Contents
Page
PREFACE
v
INTRODUCTION
vi
Chapter 1
RIGGING ONE MILITARY UTILITY VEHICLE (M-GATOR) ON AN 8-FOOT, TYPE V
PLATFORM FOR LOW-VELOCITY AIRDROP
1-1
Description of Load
1-1
Preparing Platform
1-1
Building and Placing Honeycomb Stack
1-3
Preparing the M-Gator
1-5
Positioning Load
1-8
Lashing M-Gator
1-9
Building M-Gator Box
1-12
Positioning M-Gator Box
1-15
Lashing M-Gator Box
1-16
Installing Suspension Slings
1-18
Stowing Cargo Parachute
1-19
Installing Extraction System
1-20
Installing Parachute Release
1-21
Positioning Extraction Parachute
1-22
Installing Provisions for Emergency Restraints
1-22
Marking Rigged Load
1-22
Equipment Required
1-22
Chapter 2
RIGGING TWO MILITARY VEHICLES (M-GATOR) AND EQUIPMENT BOX ON A
20-FOOT, TYPE V PLATFORM FOR LOW-VELOCITY AIRDROP
2-1
Description of Load
2-1
Preparing Platform
2-1
Building M-Gator Boxes
2-1
Building Honeycomb Stacks
2-3
Positioning Honeycomb Stack 2
2-3
Distribution Restriction: Approved for public release; distribution is unlimited.
*This publication supersedes FM 4-20.108/TO13C7-2-491, dated 7 May 2004, and FM 10-500-77/TO 13C7-
55-1, dated 1 February 2000.
10 September 2007
FM 4-20.108/TO 13C7-2-491
i
Contents
Preparing the M-Gators
2-4
Building Equipment Box
2-5
Positioning And Lashing The Equipment Box
2-6
Positioning M-Gator Honeycomb Stacks
2-9
Positioning Load
2-10
Lashing M-Gators
2-11
Positioning M-Gator Boxes
2-18
Lashing M-Gator Boxes
2-19
Installing Suspension Slings
2-23
Stowing Cargo Parachutes
2-24
Installing Extraction System
2-25
Installing Parachute Release
2-26
Positioning Extraction Parachute
2-27
Installing Provisions For Emergency Restraints
2-27
Marking Rigged Load
2-27
Equipment Required
2-27
Chapter 3
RIGGING ONE MILITARY UTILITY VEHICLE (M-GATOR) AND AN A-22 CARGO
BAG ON A 12-FOOT, TYPE V PLATFORM FOR LOW-VELOCITY AIRDROP3-1
Description of Load
3-1
Preparing Platform
3-1
Building M-Gator Box
3-1
Preparing M-Gator
3-1
Building Honeycomb Stacks
3-3
Positioning Honeycomb Stack 1
3-3
Positioning Load
3-4
Positioning Honeycomb Stack 2
3-5
Rigging and Positioning the A-22 Cargo Bag
3-6
Lashing the A-22 Cargo Bag
3-7
Lashing M-Gator
3-9
Positioning M-Gator Box
3-12
Lashing M-Gator Box
3-13
Installing Suspension Slings
3-15
Stowing Cargo Parachute
3-16
Installing Extraction System
3-17
Installing Parachute Release
3-18
Positioning Extraction Parachute
3-19
Installing Provisions for Emergency Restraints
3-19
Marking Rigged Load
3-19
Equipment Required
3-19
Chapter 4
RIGGING ONE MILITARY UTILITY VEHICLE (M-GATOR) WITH THE FIRST
RESPONSE EXPEDITIONARY (FRE) FIRE VEHICLE AND AN A-22 CARGO BAG
ON A 12-FOOT, TYPE V PLATFORM FOR LOW-VELOCITY AIRDROP
4-1
Description of Load
4-1
Preparing Platform
4-1
Building and Positioning Honeycomb Stacks
4-3
Positioning Honeycomb Stack 1
4-4
Preparing M-Gator with FRE
4-5
ii
FM 4-20.108 /TO 13C7-2-491
10 September 2007
Contents
Building M-Gator W/FRE Box
4-9
Positioning Load
4-12
Positioning Honeycomb Stack 2
4-13
Rigging and Positioning the A-22 Cargo Bag
4-14
Lashing the A-22 Cargo Bag
4-24
Lashing M-Gator W/FRE
4-26
Positioning M-Gator Box
4-29
Lashing M-Gator Box
4-30
Building and Installing M-Gator W/FRE Box Extension
4-32
Installing Suspension Slings
4-34
Stowing Cargo Parachute
4-35
Installing Extraction System
4-36
Installing Parachute Release
4-37
Positioning Extraction Parachute
4-38
Installing Provisions for Emergency Restraints
4-38
Marking Rigged Load
4-38
Equipment Required
4-38
Chapter 5
RIGGING ONE MINIBIKE FOR DOOR BUNDLE
5-1
Description of Load
5-1
Building the Combat-Expendable Platform (CEP)
5-2
Preparing the CEP
5-3
Building and Positioning the Honeycomb Stack
5-4
Preparing and Positioning Minibike
5-5
Preparing Minibike after Positioning
5-7
Securing the Minibike
5-9
Stowing Cargo Parachute
5-10
Positioning Extraction Parachute
5-11
Installing Provisions for Emergency Restraints
5-11
Marking Rigged Load
5-11
Equipment Required
5-11
Chapter 6
RIGGING ONE MOTORCYCLE FOR LOW-VELOCITY AIRDROP
6-1
Description of Load
6-1
Building Combat Expendable Platform
6-1
Preparing Combat Expendable Platform (CEP)
6-2
Building and Positioning Honeycomb Stack
6-3
Preparing and Positioning Motorcycle on CEP
6-4
Protecting the Motorcycle
6-5
Securing the Motorcycle to CEP
6-6
Stowing Cargo Parachutes
6-8
Positioning Extraction Parachute
6-9
Installing Provisions for Emergency Restraints
6-9
Marking Rigged Load
6-9
Equipment Required
6-9
Chapter 7
RIGGING TWO MOTORCYCLES FOR LOW-VELOCITY AIRDROP
7-1
Description of Load
7-1
Building Combat Expendable Platform
7-1
10 September 2007
FM 4-20.108 /TO 13C7-2-491
iii
Contents
Preparing Combat Expendable Platform (CEP)
7-3
Positioning A-22 Sling Assemblies
7-4
Joining A-22 Sling Assemblies
7-5
Positioning A-22 Cargo Covers and Honeycomb
7-6
Preparing, Positioning, and Protecting the Two Motorcycles
7-7
Closing the A-22 Cargo Bag Covers
7-9
Securing A-22 Cargo Bags Tie-Down Straps
7-10
Securing A-22 Cargo Bags Lateral Straps
7-11
Securing A-22 Cargo Bags Skid Board Ties
7-12
Installing Suspension Slings
7-13
Packing a 15-Foot Cargo Extraction Parachute for use as a Deployment
Parachute
7-14
Preparing and Stowing a G-12 Cargo Parachute and the 15-foot Cargo
Extraction
7-20
Positioning Extraction Parachute
7-21
Installing Provisions for Emergency Restraints
7-21
Marking Rigged Load
7-21
Equipment Required
7-21
Chapter 8
RIGGING ONE FOUR WHEELED QUAD-RUNNER ON A COMBAT EXPENDABLE
PLATFORM (CEP) FOR LOW-VELOCITY AIRDROP
8-1
Description of Load
8-1
Building and Preparing Combat Expendable Platform
8-1
Installing Suspension Slings
8-4
Installing Load Restraints
8-5
Positioning Honeycomb Stacks
8-6
Preparing and Positioning Quad-Runner
8-7
Securing Load to Platform
8-8
Securing Accompanying Load
8-9
Installing Deadman’s Tie
8-10
Stowing Cargo Parachute
8-11
Installing Parachute Release
8-12
Positioning Extraction Parachute
8-13
Installing Provisions for Emergency Restraints
8-13
Marking Rigged Load
8-13
Equipment Required
8-13
GLOSSARY
Glossary-1
REFERENCES
References-1
iv
FM 4-20.108 /TO 13C7-2-491
10 September 2007
Preface
SCOPE
This manual is designed for use by all parachute riggers. This manual shows and tells how to prepare and rig
the following configurations of the Military Utility Vehicles (M-Gator), one 80-cubic centimeter minibike, one
or two 250- to 300-cubic centimeter motorcycles, one 350-cubic centimeter Yamaha four wheeled quad-runner
on a combat expendable platform and one 500-cubic centimeter Polaris four wheeled quad-runner on a combat
expendable platform. They are rigged for low-velocity airdrop from a C-130 or C-17 aircraft.
USER INFORMATION
The proponent of this publication is United States Training and Doctrine Command. You are encouraged to
report any errors or omissions and suggest ways for improving this manual.
Army personnel, send your comments on DA Form 2028 (Recommended Changes to Publications and Blank
Forms) to:
Director
Aerial Delivery and Field Services Department
USA Quartermaster Center and School
710 Adams Avenue
Fort Lee, Virginia 23801-1502
Air Force personnel, route your reports on AFTO Form 22 through your respective command Weapons and
Tactics to:
Headquarters, Air Mobility Command (AMC/A3DT)
402 Scott Drive, Unit 3AI
Scott AFB, Illinois 62225-5302
HQ AMC/A3DT 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:
542th MSUG/GBMUDE
380 Richard Ray Blvd STE 104
Robins AFB, Georgia 31098-1640
10 September 2007
FM 4-20.108 /TO 13C7-2-491
v
Introduction
DESCRIPTION OF LOAD
Military Utility Vehicle (M-Gator): The M-Gator is 108 inches long, 60 inches wide and 43.6
inches high. The weight of the M-Gator is 1,450 pounds, including fuel and fluids. Maximum
payload for the M-Gator is 1,400 pounds to include passengers.
A-22 Cargo Bag Assembly: The A-22 cargo bag assembly is an adjustable cotton duck
cloth/nylon and nylon webbing container. For this application, the A-22 cargo bag assembly will
not exceed a maximum rigged weight of 1,000 pounds due to the M-Gator payload restrictions.
The minimum rigged weight is 800 pounds. Maximum height for the rigged A-22 is 83 inches.
Note. The only exception to these weight restrictions is the A-22 cargo bag limitations on the
Military Utility Vehicle (M-Gator) with the First Response Expeditionary (FRE) Fire Vehicle
and an A-22 cargo bag assembly load. The A-22 cargo bag on this load will weigh 1,200
pounds.
Military Utility Vehicle (M-Gator) with the First Response Expeditionary (FRE) Fire Vehicle:
The M-Gator with FRE basic platform is a standard M-Gator modified with the cargo bed
removed and replaced with an ultra high pressure system fire fighting equipment mounted in the
cargo bed’s place. The M-Gator W/FRE is 120 inches long, 63 inches wide and 62 inches high.
The weight of the M-Gator W/FRE is 2,280 pounds.
The minibike is an 80-cubic centimeter. The minibike is 61 inches long, 27 inches wide and 34
inches high. The weight of the minibike is 155 pounds, including fuel and fluids.
The motorcycle is a 250 to 300-cubic centimeter. The motorcycle is 88 inches long, 32 inches
wide and 49 inches high. The motorcycle weighs 275 pounds, including fuel and fluids.
The four wheeled quad-runner is a 350-cubic centimeter. The quad-runner is 72 inches long, 45
inches wide and 65 inches high. The quad-runner weighs 550 pounds, including fuel and fluids.
The four wheeled quad-runner is a 500-cubic centimeter. The quad-runner is 89 inches long, 48
inches wide and 50 inches high. The quad-runner weighs 820 pounds, including fuel and fluids.
vi
FM 4-20.108 /TO 13C7-2-491
10 September 2007
Introduction
SPECIAL CONSIDERATIONS
CAUTION
Only ammunition listed in FM 4-20.153/MCRP 4-11.3B/TO 13C7-18-41
may be airdropped.
The loads covered in this manual include hazardous material as defined in AFMAN 24-204(I)/TM
38-250/NAVSUP PUB 505/MCO P4030 19I. The hazardous materials must be packaged, marked
and labeled as required by AFMAN 24-204(I)/TM 38-250/NAVSUP PUB 505/MCO P4030.19I.
A copy of this manual must be available to the Joint Airdrop Inspectors during the before and
after loading inspection in accordance with AR 59-4/OPNAVINST 4630.24C/AFI 13-
210(I)/MCO 13480.1B.
10 September 2007
FM 4-20.108 /TO 13C7-2-491
vii
This page intentionally left blank.
Chapter 1
Rigging One Military Utility Vehicle (M-Gator) on an 8-Foot,
Type V Platform for Low-Velocity Airdrop
DESCRIPTION OF LOAD
1-1. This load consists of one John Deere Diesel, which has been named the Military Utility Vehicle (M-
Gator) (Figure 1-1). It is rigged on an 8 foot, type V platform. The load shown has a rigged weight of
3120 pounds. It has a length of 125 inches, width of 108 inches, and height of 78 inches, with a center of
balance of 49 inches. The load is rigged with one G-11 cargo parachute.
PREPARING PLATFORM
1-2. Inspect, or assemble and inspect, an 8 foot, type V platform as outlined in TM 10-1670-268-
20&P/TO 13C7-52-22. Prepare an 8-foot, type V platform using 14 tie-down clevises as shown in Figure
1-2.
Figure 1-1. Military Utility Vehicle (M-Gator)
10 September 2007
FM 4-20.108 /TO 13C7-2-491
1-1
Chapter 1
Step:
1. Install a tandem link to the front of each platform side rail using holes 1, 2, and 3.
2. Install a tandem link to the rear of each platform side rail using holes 14, 15, and 16.
3. Install a clevis on bushing 1 of each front tandem link.
4. Install a clevis on bushing 2 of each rear tandem link.
5. Starting at the front of each platform side rail, install clevises on the bushings bolted on holes
7, 9, 10, 11, and 12.
6. Starting at the front of the platform, number the clevises 1 through 7 on the right side and 1A
through 7A on the left side.
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 1-2. Platform Prepared
1-2
FM 4-20.108 /TO 13C7-2-491
10 September 2007
Rigging One Military Utility Vehicle (M-Gator) on an 8-Foot, Type V Platform for Low-Velocity Airdrop
BUILDING AND PLACING HONEYCOMB STACK
1-3. Prepare the honeycomb stack for the M-Gator as shown in Figure 1-3. Position the honeycomb stack
as shown in Figure 1-4.
Stack
Width
Length
Pieces
Material
Instructions
Number
(inches)
(inches)
1
3
72
12
Honeycomb
Position on floor with the second piece 14
inches from the first and the third piece 40
inches from the second. Cut a 6-inch by 6-
inch hole in each piece of honeycomb 6
inches from the sides and centered.
1
9
9
Honeycomb
Centered and 16 inches from the rear of the
second piece of honeycomb.
1
12
90
Honeycomb
Center and glue across first four pieces of
honeycomb.
6
30
12
Honeycomb
Cut 6-inch by 6-inch holes, 6 inches from
one side, in the center of each piece. Line
holes up on base and glue in place.
3
72
12
Honeycomb
Cut 6-inch by 6-inch holes, on each side of
honeycomb, 6 inches from the side and
centered. Line holes up on base and glue in
place.
6
12
12
Honeycomb
Center and glue three pieces on the first and
second sections.
2
9
9
Honeycomb
Center and glue on the third sections rear
edge.
3
9
9
¾- Plywood
Glue on the 9-inch by 9-inch honeycomb
stack.
1
9
9
Honeycomb
Glue on the 9-inch by 9-inch honeycomb
and plywood stack.
Figure 1-3. Honeycomb Stack Prepared
10 September 2007
FM 4-20.108 /TO 13C7-2-491
1-3
Chapter 1
Stack
Position of Stack on the Platform
Number
Place stack:
1
Centered on the platform and even with front edge of platform.
Figure 1-4. Honeycomb Stack Positioned on Platform
1-4
FM 4-20.108 /TO 13C7-2-491
10 September 2007
Rigging One Military Utility Vehicle (M-Gator) on an 8-Foot, Type V Platform for Low-Velocity Airdrop
PREPARING THE M-GATOR
1-4. Prepare the M-Gator according to Figure 1-5.
1
2
3
1 Bring the seats forward and secure with Type III nylon cord.
2 Secure the gear stick to the emergency brake with Type III nylon cord.
3 Secure the fire extinguisher to the mounting bracket with Type III nylon cord.
Figure 1-5. M-Gator Prepared
10 September 2007
FM 4-20.108 /TO 13C7-2-491
1-5
Chapter 1
4
5
6
4 Raise the bed and position a lashing across the frame, centered between the rear tires.
5 Route lashing around the frame and the engine.
6 Secure a piece of 2- by 4- by 8 ½-inch lumber, laterally, under the engine. Lumber may be
temporarily secured using cloth-backed tape. Position the load binder against the lumber.
Pre-position another lashing across the top of the frame to be used in step 10 (Not Shown).
Figure 1-5. M-Gator Prepared (Continued)
1-6
FM 4-20.108 /TO 13C7-2-491
10 September 2007
Rigging One Military Utility Vehicle (M-Gator) on an 8-Foot, Type V Platform for Low-Velocity Airdrop
8
7
10
9
7 Lower the bed and place one layer of 36 by 56-inch honeycomb in it.
8 Remove the litter from the M-Gator and place the litter upside down and centered on the honeycomb.
9 Place three more 36 by 56-inch pieces of honeycomb on the litter and force them all the
way down.
10 Secure the litter and honeycomb to the bed with the pre-positioned lashing.
Figure 1-5. M-Gator Prepared (Continued)
10 September 2007
FM 4-20.108 /TO 13C7-2-491
1-7
Chapter 1
POSITIONING LOAD
1-5. Using four 12-foot (2 loop), type XXVI nylon suspension slings, lift and position the M-Gator.
Attach large clevis assemblies to each sling. Using two front and two rear lifting points, attach one clevis
to each lifting point. Position the M-Gator with the rear of the vehicle facing the front of the platform.
Align the rear edge of the M-Gator frame with the front edge of the honeycomb stack and center. Each tire
will be centered over a cutout in the honeycomb stack according to Figure 1-6.
z
Figure 1-6. M-Gator Positioned
1-8
FM 4-20.108 /TO 13C7-2-491
10 September 2007
Rigging One Military Utility Vehicle (M-Gator) on an 8-Foot, Type V Platform for Low-Velocity Airdrop
LASHING M-GATOR
1-6. Lash the M-Gator to the platform according to FM 4-20.102/MCRP 4-11.3J /NAVSEA SS400-AB-
MMO-010/TO 13C7-1-5 and as shown in Figures 1-7 through 1-9.
Note. Place all load binders near the platform in case adjustments to the lashings are needed.
1A
2
1
1
Lashing
Tie-down
Instructions
Number
Clevis Number
Pass lashing through:
1
1
Right rear tie-down point.
2
1A
Left rear tie-down point.
Figure 1-7. Lashings 1 and 2 Installed
10 September 2007
FM 4-20.108 /TO 13C7-2-491
1-9
Chapter 1
3
A3
Lashing
Deck Ring Number
Instructions
Number
Pass lashing through:
3
A3
Left rear tie-down point.
4
B3
Right rear tie-down point. (Not Shown)
Figure 1-8. Lashings 3 and 4 Installed
1-10
FM 4-20.108 /TO 13C7-2-491
10 September 2007
Rigging One Military Utility Vehicle (M-Gator) on an 8-Foot, Type V Platform for Low-Velocity Airdrop
7A
8
5
7
3
7
Lashing Number
Tie-down
Instructions
Clevis Number
Pass lashing through:
5
3
Front left tie-down point.
6
3A
Front right tie-down point.
(Not Shown)
7
7
Front right tie-down point
8
7A
Front left tie-down point
Figure 1-9. Lashings 5 through 8 Installed
10 September 2007
FM 4-20.108 /TO 13C7-2-491
1-11
Chapter 1
BUILDING M-GATOR BOX
1-7. Build the M-Gator box using 8d common nails as shown in Figure 1-10.
Note. Use wood glue and 1 ½-inch long, #4 wood screws to sturdy box for multiple airdrop use.
69 1/2”
4 1/2”
2” X 6” X 65” Lumber
48”
3/4" Plywood
81’
2” X 6” X 65” Lumber Centered on Plywood Joints
3/4" Plywood
33”
2” X 6” X 65” Lumber
4 1/2 “
Figure 1-10. M-Gator Box Built (Top Board)
1-12
FM 4-20.108 /TO 13C7-2-491
10 September 2007
Rigging One Military Utility Vehicle (M-Gator) on an 8-Foot, Type V Platform for Low-Velocity Airdrop
ONE RIGHT AND ONE LEFT SIDEBOARD
IS REQUIRED TO BUILD BOX
Note. Diagram not drawn to scale. Sides are not symmetrical.
81”
2” X 6” X 73” Lumber
3/4” Plywood
58” 48’
INSIDE VIEW
2” X 4” X 58” Lumber
78”
Figure 1-10. M-Gator Box Built (Side Boards) (Continued)
10 September 2007
FM 4-20.108 /TO 13C7-2-491
1-13
Chapter 1
72”
3/4” X 24” X 9” Plywood
3/4" X 24” X 58”
3/4" X 24” X 58” Plywood
Plywood
OUTSIDE VIEW
19 1/4"
11”
3 1/2"
2” X 4” X 65” Lumber
2"
2” X 4” X 65” Lumber
INSIDE VIEW
All notches are
2 3/4" X 1 1/4" deep
Figure 1-10. M-Gator Box Built (Front Board) (Continued)
1-14
FM 4-20.108 /TO 13C7-2-491
10 September 2007
Rigging One Military Utility Vehicle (M-Gator) on an 8-Foot, Type V Platform for Low-Velocity Airdrop
POSITIONING M-GATOR BOX
1-8. Position M-Gator box as shown in Figure 1-11.
1
1 Position the box on the platform, aligning the front bottom edge of the box with the platform
rear edge.
Figure 1-11. M-Gator Box Positioned
10 September 2007
FM 4-20.108 /TO 13C7-2-491
1-15
Chapter 1
LASHING M-GATOR BOX
1-9. Lash the M-Gator box to the platform according to FM 4-20.102/MCRP 4-11.3J /NAVSEA SS400-
AB-MMO-010/TO 13C7-1-5 and as shown in Figure 1-12.
BOX FRONT
BOX LEFT SIDE
1
2
4
REAR
6
1 Route a lashing through clevis 4A and back through its own D-ring, and pull the strap taut.
Repeat the same steps for clevis 6A.
Lashing
Tie-down
Instructions
Number
Clevis Number
Pass lashing through:
1
4A and 4
Top front cutouts of box.
2
6A and 6
Bottom front cutouts of box.
Figure 1-12. M-Gator Box Lashed
1-16
FM 4-20.108 /TO 13C7-2-491
10 September 2007
Rigging One Military Utility Vehicle (M-Gator) on an 8-Foot, Type V Platform for Low-Velocity Airdrop
4
3
5
2
1 Route a lashing through clevis 2 and back through its own D-ring, and pull strap taut. Repeat
the same steps for clevises 2A, 5, and 5A.
Lashing
Tie-down
Instructions
Number
Clevis Number
Pass lashing through:
3
2 and 2A
Over top of box and bind on left side of box.
4
5 and 5A
Over top of box and bind on left side of box.
Figure 1-12. M-Gator Box Lashed (Continued)
10 September 2007
FM 4-20.108 /TO 13C7-2-491
1-17
Chapter 1
INSTALLING SUSPENSION SLINGS
1-10. Install four 12-foot (2 loop), type XXVI nylon slings as suspension slings according to FM 4-
20.102/MCRP 4-11.3J /NAVSEA SS400-AB-MMO-010/TO 13C7-1-5 and as shown in Figure 1-13.
1
3
2
1 Attach a 12-foot (2-loop), type XXVI nylon sling to each of the four tandem links using a
large clevis.
2 Felt and tape each sling where they make contact with the box.
3 Raise the slings above the load and 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 1-13. Suspension Slings Installed
1-18
FM 4-20.108 /TO 13C7-2-491
10 September 2007
Rigging One Military Utility Vehicle (M-Gator) on an 8-Foot, Type V Platform for Low-Velocity Airdrop
STOWING CARGO PARACHUTE
1-11. Prepare, stow, and restrain one G-11 cargo parachute on the front edge of the M-Gator box
according to FM 4-20.102/MCRP 4-11.3J /NAVSEA SS400-AB-MMO-010/TO 13C7-1-5 and as shown in
Figure 1-14.
Figure 1-14. Cargo Parachute Stowed
10 September 2007
FM 4-20.108 /TO 13C7-2-491
1-19
Chapter 1
INSTALLING EXTRACTION SYSTEM
1-12. Install the Extraction Force Transfer Coupling (EFTC) 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.
1
2
3
1 Install EFTC actuator mounting bracket using front mounting holes.
2 Install a 12-foot cable.
3 Attach a 9-foot (2-loop), type XXVI nylon sling for the deployment line.
Figure 1-15. Extraction System Installed
1-20
FM 4-20.108 /TO 13C7-2-491
10 September 2007
Rigging One Military Utility Vehicle (M-Gator) on an 8-Foot, Type V Platform for Low-Velocity Airdrop
INSTALLING PARACHUTE RELEASE
1-13. Prepare and install an M-1 cargo parachute release 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 1-16.
2
1
1 Place the M-1 release on the M-Gator box, and safety it to a convenient place on the load.
2 Fold and secure any slack in the suspension slings.
Figure 1-16. Parachute Release System Installed
10 September 2007
FM 4-20.108 /TO 13C7-2-491
1-21
Chapter 1
POSITIONING 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.
INSTALLING PROVISIONS FOR EMERGENCY RESTRAINTS
1-15. Select and install provisions for emergency restraints according to the emergency aft restraints
requirements in FM 4-20.102/MCRP 4-11.3J /NAVSEA SS400-AB-MMO-010/TO 13C7-1-5.
MARKING RIGGED LOAD
1-16. Mark the rigged load 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. Complete the Shipper’s Declaration for Dangerous
Goods. If the load varies from the one shown, the weight, height, tip-curve, CB, and parachute
requirements must be recomputed.
EQUIPMENT REQUIRED
1-17. The equipment required to rig this load is listed in Table 1-1.
1-22
FM 4-20.108 /TO 13C7-2-491
10 September 2007
Rigging One Military Utility Vehicle (M-Gator) on an 8-Foot, Type V Platform for Low-Velocity Airdrop
CAUTION
Make the final rigger inspection required by FM 4-20.102/MCRP 4-
11.3J/NAVSEA SS400-AB-MM0-010/TO 13C7-1-5 and AR 59-4/
OPNAVINST 4630.24C/AFJ 13-210(I)/MCO 13480.1B before the
load leaves the rigging site.
RIGGED LOAD DATA
Weight
3,120 pounds
Maximum Load Allowed
5,000 pounds
Height
78 inches
Width
108 inches
Overall Length
125 inches
Overhang: Front (bed)
11 inches
Rear
0 inches
Center of Balance (CB) (from front edge of platform)
49 inches
Extraction System with 12-foot cable (adds 18 inches to length of platform)
EFTC
Figure 1-17. M-Gator Rigged on an 8-Foot Type V Platform for Low-Velocity Airdrop
10 September 2007
FM 4-20.108 /TO 13C7-2-491
1-23
Chapter 1
Table 1-1. Equipment Required for Rigging the M-Gator on an 8-Foot Type V Platform for Low-
Velocity Airdrop
National Stock Number
Item
Quantity
8040-00-273-8713
Adhesive, paste, 1-gal
As required
1670-01-035-6054
Bridle, extraction line lead, (line bag for C-17)
1
4030-00-090-5354
Clevis, large
5
1670-00-360-0328
Cover, clevis, large
1
8135-00-664-6958
Cushioning material, packaging, cellulose wadding
As required
1670-00-434-5783
Coupling assembly, airdrop, EFTC, w/12-ft cable
1
1670-01-475-1990
Extraction Parachute Jettison System (EPJS)
1
8305-00-191-1101
Felt, ½-inch
As required
8305-00-290-5584
Felt, 3/16-inch
As required
1670-01-183-2678
Leaf, extraction line (line bag)(add 2 for DES)
2
Line Multi-Loop:
For deployment line:
1670-01-062-6304
9-ft (2-loop), type XXVI nylon webbing
1
For drogue:
1670-01-064-4452
60-ft (1-loop), type XXVI nylon webbing (DES)
1
For extraction:
1670-01-064-4452
60-ft (1-loop), type XXVI nylon (C-130 aircraft)
1
1670-01-107-7652
160-ft (1-loop), type XXVI nylon (C-17 aircraft)
1
For riser extension:
1670-01-062-6301
3-ft (2-loop), type XXVI nylon webbing
1
For suspension:
1670-01-062-6303
12-ft (2-loop), type XXVI nylon webbing
4
Link:
1670-01-493-6418
Assembly small, two-point, 3 ¾-inch
1
1670-01-493-6418
Assembly small, two-point, 3 ¾-inch (C-17 drogue)
1
1670-01-072-5637
Jettison, C-130 (DES)
1
1670-01-483-8259
Link, Parachute connector (TRM H-block) (C-17)
1
Lumber:
5510-00-220-6146
2- by 4-inch
As required
5510-00-220-6148
2- by 6-inch
As required
5530-00-128-4981
Plywood, ¾-inch sheet
6 sheets
Nail, steel wire, common:
5315-00-010-4659
8d
As required
1670-00-753-3928
Pad, energy-dissipating, honeycomb,
9 sheets
Parachute:
1670-01-016-7841
G-11
1
1670-00-063-3715
15-ft, Extraction, Cargo
1
1670-01-063-3717
15-ft, Extraction Drogue (DES)
1
1-24
FM 4-20.108 /TO 13C7-2-491
10 September 2007
Rigging One Military Utility Vehicle (M-Gator) on an 8-Foot, Type V Platform for Low-Velocity Airdrop
Table 1-1. Equipment Required for Rigging the M-Gator on an 8-Foot Type V Platform for Low-
Velocity Airdrop (Continued)
National Stock Number
Item
Quantity
Platform, airdrop, type V, 8-ft:
1670-01-353-8425
Bracket assembly, component (EFTC)
1
1670-01-353-8424
Bracket, assembly, extraction
1
1670-01-162-2372
Clevis, load tie-down
14
1670-01-162-2381
Link, Tandem, link sups. assembly
4
1670-01-097-8816
Release, cargo parachute, M-1
1
7510-00-266-5016
Tape, adhesive, 2-in
As required
1670-00-937-0271
Tie-down cargo, A/C, 15-ft webbing
16
Webbing:
4020-00-240-2146
Cord, nylon, type III, 550-lb
As required
8305-00-268-2411
Cotton, type I, 1/4-inch
As required
8305-00-082-5752
Nylon, tubular, 1/2-in, natural
As required
8305-00-263-3591
Nylon, type VIII
As required
10 September 2007
FM 4-20.108 /TO 13C7-2-491
1-25
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Chapter 2
Rigging Two Military Utility Vehicles (M-Gator) and
Equipment Box on a 20-Foot, Type V Platform for Low-
Velocity Airdrop
DESCRIPTION OF LOAD
2-1. This load consists of two John Deere diesels, which have been named M-Gator, and an equipment
box weighing 1,600 pounds minimum or 2,000 pounds maximum of unit specific equipment. It is rigged
on a 20-foot, type V platform. The load shown has a rigged weight of 8,520 pounds. It has a length of 258
inches, width of 108 inches, and height of 78 inches, with a center of balance of 124 inches. The load is
rigged with two G-11 cargo parachutes.
PREPARING PLATFORM
2-2. Prepare a 20-foot, type V airdrop platform according to TM 10-1670-268-20&P/TO 13C7-52-22
using 40 tie-down clevises and as shown in Figure 2-1.
BUILDING M-GATOR BOXES
2-3. Build two M-Gator boxes as outlined in chapter 1, paragraph 1-7.
10 September 2006
FM 4-20.108 /TO 13C7-2-491
2-1
Chapter 2
Clevises 20A through 1A
Left
REAR
FRONT
Right
Clevises 20 through 1
1. Inspect, or assemble and inspect, a 20-foot, type V platform according to TM 10-1670-268-
20&P/TO 13C7-52-22.
2. Install a tandem multi-purpose link to front of each platform side rail holes 1, 2, and 3.
3. Install a suspension link to each platform side rail holes 6, 7, and 8.
4. Install a suspension link to each platform side rail holes 33, 34, and 35.
5. Install a clevis on bushings 2 and 4 on each tandem multi-purpose link.
6. Install a clevis on bushing 3 of each front suspension bracket link.
7. Install a clevis on bushings 2 and 4 on each rear suspension bracket link.
8. Starting at the front of each platform side rail, install clevises on each platform side rail
using bushings bolted on holes 4, 10, 11, 15, 16, 18, 19, 22, 23, 25, 26, 30, 31, 37, and 39.
9. Starting at the front of each platform side rail, number the clevises, including the clevis on
the tandem link, bolted to the right side from 1 through 20 and those bolted to the left side
from 1A through 20A.
10. 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 2-1. Platform Prepared
2-2
FM 4-20.108 /TO 13C7-2-491
10 September 2007
Rigging Two Military Utility Vehicles (M-Gator) and Equipment Box on a 20-Foot, Type V Platform for
Low-Velocity Airdrop
BUILDING HONEYCOMB STACKS
2-4. Refer to paragraph 1-3 for building honeycomb stacks 1 and 3. Build honeycomb stack 2 as shown
in Figure 2-2.
Stack
Pieces
Width
Length
Material
Instructions
Number
(Inches)
(Inches)
2
2
96
36
Honeycomb
Glue and place one on top of each other.
Figure 2-2. Honeycomb Stack 2 Prepared
POSITIONING HONEYCOMB STACK 2
2-5. Position honeycomb stack 2 centered on the platform and as shown in Figure 2-3.
Stack 2
Figure 2-3. Honeycomb Stack 2 Positioned
10 September 2007
FM 4-20.108 /TO 13C7-2-491
2-3
Chapter 2
PREPARING THE M-GATORS
2-6. Prepare the M-Gators according to Chapter 1, paragraph 1-4 with the exception of padding the
tailgate as shown in Figure 2-4.
2
1
1 Pad the tailgate with a 1/2-inch by 1 1/2-inch by 57-inch piece of felt.
2 Secure the felt with pressure-sensitive tape and Type III nylon cord.
Figure 2-4. M-Gators Prepared
2-4
FM 4-20.108 /TO 13C7-2-491
10 September 2007
Rigging Two Military Utility Vehicles (M-Gator) and Equipment Box on a 20-Foot, Type V Platform for
Low-Velocity Airdrop
BUILDING EQUIPMENT BOX
2-7. Build the equipment box as shown in Figure 2-5.
62 1/2"
4”
2” x 4” X 50” Lumber
2”
48"
3/4" Plywood
22"
Front & Rear
2”
18”
2 3/4"
2” x 4” X 50” Lumber
2”
58 1/2”
25 1/2”
3/4" Plywood
Top & Bottom
24”
3/4" Plywood
48”
Sides
Figure 2-5. Equipment Box Built
10 September 2007
FM 4-20.108 /TO 13C7-2-491
2-5
Chapter 2
POSITIONING AND LASHING THE EQUIPMENT BOX
2-8. Position the lashings and the equipment box as shown in Figure 2-6.
1
2
1 Position two 30-foot lashings 28 inches from each edge on stack 2, running the length of the
platform.
2 Position a 30-foot lashing centered on stack 2, running the width of the platform.
3
3 Position the box centered on stack 2.
Figure 2-6. Equipment Box Positioned and Lashed
2-6
FM 4-20.108 /TO 13C7-2-491
10 September 2007

 

 

 

 

 

 

 

 

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