AIRDROP OF SUPPLIES AND EQUIPMENT: RIGGING MILITARY UTILITY VEHICLE (M-GATOR) (June 2001) - page 1

 

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AIRDROP OF SUPPLIES AND EQUIPMENT: RIGGING MILITARY UTILITY VEHICLE (M-GATOR) (June 2001) - page 1

 

 

*FM 4-20.108/TO 13C7-2-491
Field Manual
Headquarters
No 4-20.108
Department of the Army
Tecnical Order
and the Air Force
No 13C7-2-491
Washington, DC, 29 June 2001
Airdrop of Supplies and Equipment:
Rigging Military Utility Vehicle
(M-Gator)
Contents
Page
Preface
iv
Introduction
Description of Items
v
Special Considerations
v
Chapter 1
Rigging One Military Utility Vehicle (M-Gator) on an 8-Foot Platform for Low-
Velocity Airdrop
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
Distribution Restrictions: Approved for public release; distribution is unlimited.
*This publication supercedes FM 10-508/TO13C7-2-491, 16 August 1985.
i
Page
Installing Provisions for Emergency Restraints
1-22
Marking Rigged Load
1-23
Equipment Required
1-23
Chapter 2
Rigging Two Military Utility Vehicles (M-Gator) and Equipment Box on a 20-Foot
Platform for Low-Velocity Airdrop
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
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
2-28
Equipment Required
2-28
Chapter 3
Rigging One Military Utility Vehicle (M-Gator) and an A-22 Cargo Bag on a 12-Foot
Platform for Low-Velocity Airdrop
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
ii
Page
Installing Provisions for Emergency Restraints
3-20
Marking Rigged Load
3-21
Equipment Required
3-21
Glossary
Glossary-1
References
References-1
iii
Preface
This manual tells and shows how to prepare and rig the following configurations of the Military Utility
Vehicle (M-Gator) for low-velocity airdrop from a C-130, C-141, C-17, and C-5 aircraft:
a. One M-Gator on an 8-foot platform.
b. Two M-Gators and equipment box on a 20-foot platform.
c. One M-Gator and A-22 Cargo Bag on a 12-foot platform.
User Information
The proponent of this publication is HQ TRADOC. You are encouraged to report any errors or omis-
sions and to suggest ways of making this a better manual. Army personnel, send your comments on
DA Form 2028 directly to:
Director
Aerial Delivery and Field Services Department
USA Quartermaster Center and School
1010 Shop Road
Fort Lee, Virginia 23801-1502
Air Force personnel, send your reports on AFTO Form 22 through:
Headquarters
Air Mobility Command (AMC/DOKT)
402 Scott Drive
Scott AFB, Illinois 62225-5302
Air Force personnel in Special Operations Command, send your reports on AFTO Form 22 through:
HQ AFSOC/DOXT
100 Bartley Street, Suite 260
Hurlburt Field, Florida 32544-5273
to:
Director
Aerial Delivery and Field Services Department
USA Quartermaster Center and School
1010 Shop Road
Fort Lee, Virginia 23801-1502
Also send information copy of AFTO Form 22 to:
WR-ALC/LKCB
460 Richard Ray Blvd.
Robins AFB, Georgia 31098-1640
iv
Introduction
Description of Items
The description of the items rigged in this manual is given below:
a. 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.
b. 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 bag assem-
bly 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.
Special Considerations
CAUTION
Only ammunition listed in FM 10-500-53/MCRP 4-3.8/
TO 13C7-18-41 may be airdropped.
The loads covered in this manual may include hazardous materials as defined in AFJMAN 24-204/TM
38-250. If included, the hazardous material must be packaged, marked, and labeled as required by
AFJ MAN 24-204/TM 38-250.
A copy of this manual must be available to the joint airdrop inspectors during the before- and after-
loading inspections.
v
FM 4-20.108/TO 13C7-2-491
CHAPTER 1
Rigging One Military Utility Vehicle (M-Gator) on an 8-Foot
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)(Figure1-1). It is rigged on an 8-foot 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 platform as outlined in TM 10-
1670- 268-20&P/TO 13C7-52-22. Prepare an 8-foot platform using 14 tiedown
clevises as shown in Figure1-2.
Figure 1-1. Military Utility Vehicle (M-Gator)
1-1
FM 4-20.108/TO 13C7-2-491
CLEVISES
7A THROUGH 1A
LEFT
REAR
FRONT
RIGHT
CLEVISES
7 THROUGH 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 10-500-2/TO 13C7-1-5.
Figure 1-2. Platform Prepared
1-2
FM 4-20.108/TO 13C7-2-491
BUILDING AND PLACING HONEYCOMB STACK
1.3. Prepare the honeycomb stack for the M-Gator as shown in Figure1-3.
Position the honeycomb stack as shown in Figure1-4.
REAR
FRONT
40”
14”
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 glu e
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
3/4-inch
Glue on the 9-inch by 9-inch honeycom b
Plywood
stack.
1
9
9
Honeycomb
Glue on the 9-inch by 9-inch honeycomb
and plywood stack.
Figure1-3. Honeycomb Stack Prepared
1-3
FM 4-20.108/TO 13C7-2-491
Stack
Position of Stack on Platform
Number
Place stack:
1
Centered on platform and even with front edge of platform
Figure1-4. Honeycomb Stack Positioned on Platform
1-4
FM 4-20.108/TO 13C7-2-491
PREPARING THE M-GATOR
1-4. Prepare the M-Gator according to Figure1-5.
1
2
3
1
Bring the seats forward and secure them 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.
Figure1-5. M-Gator Prepared
1-5
FM 4-20.108/TO 13C7-2-491
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-inch by 4-inch by 8 1/2-inch lumber, laterally, under the engine.
Lumber may be temporarily secured using cloth backed tape. Position the load binder
against the lumber. Preposition 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
8
7
10
9
7
Lower the bed and place one layer of 36-inch 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-inch by 56-inch honeycomb pieces on the litter and force them all the
way down.
10
Secure the litter and honeycomb to the bed with the prepositioned lashing.
Figure 1-5. M-Gator Prepared (Continued)
1-7
FM 4-20.108/TO 13C7-2-491
POSITIONING LOAD
1-5. Using four 12-foot (2-loop), type XXVI, nylon suspension slings, lift and posi-
tion 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
Figure1-6.
Figure1-6. M-Gator Positioned
1-8
FM 4-20.108/TO 13C7-2-491
LASHING M-GATOR
1-6. Lash the M-Gator to the platform according to FM 10-500-2/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.
1 A
2
1
1
Lashing
Tiedown
Instructions
Number
Clevis Number
Pass lashing
t
1
1
Right rear
t
2
1A
Left rear
t
Figure1-7. Lashings 1 and 2 Installed
1-9
FM 4-20.108/TO 13C7-2-491
3
3 A
Lashing
Tiedown
Instructions
Number
Clevis Number
Pass lashing through :
3
Tiedown-ring 3A
Left rear tiedown point
4
Tiedown-ring 3B
Right rear tiedown point
Figure 1-8. Lashings 3 and 4 Installed
1-10
FM 4-20.108/TO 13C7-2-491
7A
5
8
7
3
7
Lashing
Tiedown
Instructions
Number
Clevis Number
Pass lashing through :
5
3
Front left tiedown poin t
6
3A
Front right tiedown poin t
7
7
Front right tiedown poin t
8
7A
Front left tiedown poin t
Figure 1-9. Lashings 5, 6, 7, and 8 Installed
1-11
FM 4-20.108/TO 13C7-2-491
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 1/2 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
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)
1-13
FM 4-20.108/TO 13C7-2-491
72”
3/4” X 9” X 24”
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
All notches are
2 3/4” X 1 1/4” deep
INSIDE VIEW
Figure 1-10. M-Gator Box Built (Front Board) (Continued)
1-14
FM 4-20.108/TO 13C7-2-491
POSITIONING M-GATOR BOX
1-8. Position M-Gator box as shown in Figure 1-11.
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
1-15
FM 4-20.108/TO 13C7-2-491
LASHING M-GATOR BOX
1-9. Lash the M-Gator box to the platform according to FM 10 500-2/TO 13C7-1-
5 and as shown in Figure 1-12.
BOX FRONT
BOX LEFT SIDE
1
2
4
6
REAR
Route a lashing through clevis 4A and back through it’s own D-ring, and pull the strap taut.
Repeat the same steps for clevis 6A.
Lashing
Tiedown
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
4
3
5
2
Route a lashing through clevis 2 and back through it's own D-ring, and pull strap taut.
Repeat the same steps for clevises 2A, 5, and 5A.
Lashing
Tiedown
Instructions
Number
Clevis Number
Pass lashing :
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)
1-17
FM 4-20.108/TO 13C7-2-491
INSTALLING SUSPENSION SLINGS
1-10. Install four 12-foot (2 loop), type XXVI nylon slings as suspension slings
according to FM 10-500-2/TO 13C7-1-5 and as shown in Figure1-13.
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 10-500-2/
TO 13C7-1-5.
Figure 1-13. Suspension Slings Installed
1-18
FM 4-20.108/TO 13C7-2-491
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 10-500-2/TO 13C7-1-5 and as shown in
Figure 1-14.
Figure 1-14. Cargo Parachute Stowed
1-19
FM 4-20.108/TO 13C7-2-491
INSTALLING EXTRACTION SYSTEM
1-12. Install the Extraction Force Transfer Coupling (EFTC) according to FM
10-500-2/TO13C7-1-5 and as shown in Figure1-15.
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
INSTALLING PARACHUTE RELEASE
1-13. Prepare and install an M-1 cargo parachute release system
according to FM 10-500-2/TO 13C7-1-5, and as shown in Figure1-16.
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
1-21
FM 4-20.108/TO 13C7-2-491
POSITIONING EXTRACTION PARACHUTE
1-14. Select the extraction parachute and extraction line needed using the
extraction line requirements table in FM 10-500-2/TO 13C7-1-5. Place the
extraction parachute and extraction line on the load for installation inside
aircraft.
INSTALLING PROVISIONS FOR EMERGENCY RESTRAINTS
1-15. Select and install provisions for emergency restraints according to the
emergency aft restraints requirements in FM 10-500-2/TO 13C7-1-5.
1-22
FM 4-20.108/TO 13C7-2-491
MARKING RIGGED LOAD
1-16. Mark the rigged load according to FM 10-500-2/TO 13C7-1-5 and as
shown in Figure1-17. Complete the Shipper's Declaration for Dangerous Goods.
If the load varies from the one shown, the weight, height, tip-off 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.
CAUTION
Make the final rigger inspection required by FM 10-500-2/
TO 13C7-1-5 before load leaves rigging site.
CB
RIGGED LOAD
Weight
3,120 pounds
Height
78 inches
Width
108 inches
Overall Length
125 inches
Overhang: Front (bed)
11 inches
Rear (EFTC)
18 inches
Center of Balance (from front edge of platform)
49 inches
Figure 1-17. M-Gator Rigged on a 8-Foot Platform for Low- Velocity Airdrop
1-23
FM 4-20.108/TO 13C7-2-491
Table1-1. Equipment required for rigging M-Gator on an 8-foot platform for low-velocity airdrop
National Stock
Item
Quantity
Numbe r
8040-00-273-8713
Adhesive paste, 1-gal
As required
1670-01-035-6054
Bridle, extraction line bag (C-17
)
1
4030-00-090-5354
Clevis, suspension, 1-in (large
)
5
4020-00-240-2146
Cord, nylon, type III, 550-lb
As required
1670-00-434-5783
Coupling, airdrop, extraction force transfer with cable,
12-ft
1
Cover:
1670-00-360-0328
Clevis, large
1
1670-01-183-2678
Leaf, extraction line (line bag
)
2
Line, drogue (for C-17
)
1670-01-064-4452
60-ft (1-loop), type XXV I
1
Line, extraction
:
1670-01-064-4452
For C-130: 60-ft (1-loop), type XXV I
1
1670-01-107-7652
For C-141: 160-ft (1-loop), type XXV I
1
1670-01-107-7652
For C-5: 160-ft (1-loop), type XXV I
1
1670-01-107-7652
For C-17: 160-ft (1-loop), type XXV I
1
Link assembly:
Two-point, 3 3/4-in
1
5306-00-435-8994
Bolt, 1-in diam, 4-in long
(2
)
5310-00-232-5165
Nut, 1-in, hexagonal
(2
)
1670-00-003-1954
Plate, side, 3 3/4-in
(2
)
5365-00-007-3414
Spacer, large
(2
)
Two-point, 3 3/4-in (for C-1
7)
1
5306-00-435-8994
Bolt, 1-in diam, 4-in long
(2
)
5310-00-232-5165
Nut, 1-in, hexagonal
(2
)
1670-00-003-1954
Plate, side, 3 3/4-in
(2
)
5365-00-007-3414
Spacer, large
(2
)
/
Link, towed mechanized release (H-Block), C-17
aircraft
1
Lumber:
5510-00-220-6146
2- by 4-in
As required
5510-00-220-6148
2- by 6-in
As required
5315-00-010-4659
Nail, steel wire, common, 8d
As required
1670-00-753-3928
Pad, energy dissipating, honeycomb, 3- by 36- by 96-in
9
sheets
1-24
FM 4-20.108/TO 13C7-2-491
Table 1-1. Equipment required for rigging M-Gator on an 8-foot platform for low-velocity airdrop
(continued)
National Stock
Item
Quantity
Number
Parachute:
1670-01-016-7841
Cargo, G-11B
1
1670-01-063-3715
Cargo, extraction, 15ft
1
1670-01-063-3715
Drogue, 15ft (for C-17 )
1
Platform, airdrop, type
V, 8-foot:
1670-01-353-8425
Bracket assembly, couplin g
(1
)
1670-01-162-2372
Clevis assembly, type V
(14
)
1670-01-353-8424
Extraction bracket assembly
(1
)
1670-01-162-2381
Link, tandem, suspension link assembly
(4
)
5530-00-128-4981
Plywood, 3/4- by 48- by 96-in
6 sheets
1670-01-097-8816
Release, cargo parachute, M-1
1
Sling, cargo airdrop
For suspension:
1670-01-062-6303
12-ft (2-loop), type XXVI nylon webbing
4
For deployment:
1670-01-062-6304
9-ft (2-loop), type XXVI nylon webbin g
1
For riser extention
:
1670-01-062-6301
3-ft (2-loop), type XXVI nylon webbin g
1
7510-00-266-5016
T
ape, adhesive, 2-in
As required
1670-00-937-0271
Tie-down assembly, 15-ft
16
Webbing :
8305-00-268-2411
Cotton, 1/4-in, type I
As required
8305-00-082-5725
Nylon, tubular, 1/2-in
As required
1-25
FM 4-20.108/TO 13C7-2-491
CHAPTER 2
Rigging Two Military Utility Vehicles (M-Gator) And Equip-
ment Box on a 20-Foot 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 2000 pounds
maximum of unit specific equipment. It is rigged on a 20-foot 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. Inspect, or assemble and inspect, a 20-foot platform as outlined in TM 10-
1670- 268-20&P/TO 13C7-52-22. Prepare a 20-foot platform using 40 tiedown
clevises 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.
2-1
FM 4-20.108/TO 13C7-2-491
CLEVISES
20 A THROUGH 1 A
LEFT
REAR
FRONT
RIGHT
CLEVISES
20 THROUGH 1
Step:
1. Install a tandem multi-purpose link to the front of each platform side rail using holes 1,2,
and 3.
2. Install a suspension link to each platform side rail using holes 6, 7, and 8.
3. Install a suspension link to each platform side rail using holes 33, 34, and 35.
4. Install a clevis on bushings 2 and 4 of each tandem link.
5. Install a clevis on bushing 3 of each front suspension link.
6. Install a clevis on bushings 2 and 4 of each rear suspension link.
7. Starting at the front of each platform side rail, install clevises on the bushings bolted on
holes 4, 10, 11, 15, 16, 18, 19, 22, 23, 25, 26, 30,31, 37, and 39.
8. Starting at the front of the platform, number the clevises 1 through 20 on the right side and
1A through 20A on the left side.
9. Label the tie-down rings according to FM 10-500-2/TO 13C7-1-5.
Figure 2-1. Platform Prepared
2-2
FM 4-20.108/TO 13C7-2-491
BUILDING HONEYCOMB STACKS
2-4. Refer to paragraph 1-3 for building honeycomb stacks 1 and 3. Build
honeycomb stack 2 as in Figure 2-2.
Stack
Width
Length
Pieces
Material
Instructions
Number
(inches )
(inches )
2
2
96
36
Honeycomb
Glue and place one on top of
t
Figure 2-2. Honeycomb Stack Prepared
POSITIONING HONEYCOMB STACK 2
2-5. Position honeycomb stack 2 centered on platform and as shown in
Figure 2-3.
STACK
2
Figure 2-3. Honeycomb Stack 2 Positioned
2-3
FM 4-20.108/TO 13C7-2-491
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 11 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
BUILDING EQUIPMENT BOX
2-7. Build the equipment box as shown in Figure 2-5.
62î
2" x 4" x 50" Lumber
26î
52î
æî Plywood
Front & Rear
2 3/4î
2" x 4" x 50" Lumber
18î
58î
25 1/4î
æî Plywood
Top & Bottom
24î
52î
æî Plywood
Sides
Figure 2-5. Equipment Box Built
2-5
FM 4-20.108/TO 13C7-2-491
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
4
4
Secure the previously positioned lashings on top and side of the box.
6
5
11
10
5
Route a lashing through clevis 10 and back through itís own D-ring, over the box and
load bind to clevis 10A.
6
Route a lashing through clevis 11 and back through itís own D-ring, over the box and
load bind to clevis 11A.
Figure 2-6. Equipment Box Positioned and Lashed (Continued)
2-7
FM 4-20.108/TO 13C7-2-491
10
8
14
13
8
7
9
7
7
Route a lashing through clevis 8A and back through itís own D-ring, through the lower
rear cutouts of the box, load bind to clevis 8.
8
Route a lashing through clevis 7A and back through itís own D-ring, through the upper
rear cutouts of the box, route a lashing through 7 and back through itís own D-
ring and load bind the lashings together.
9
Route a lashing through clevis 13A and back through itís own D-ring, through the lower
front cutouts of the box, load bind to clevis 13.
10
Route a lashing through clevis 14A and back through itís own D-ring, through the
upper front cutouts of the box. Route a lashing through clevis 14 and back through itís
own D-ring. Load bind the lashings together.
Figure 2-6. Equipment Box Positioned and Lashed (Continued)
2-8
FM 4-20.108/TO 13C7-2-491
POSITIONING M-GATOR HONEYCOMB STACKS
2-9. Position honeycomb stacks 1 and 3 on the platform as shown in Figure 2-7.
STACK
STACK
3
1
2
1
1
Pre-position honeycomb stack 1 behind the tiedown rings on the front panel and cen
tered left to right.
2
Pre-position honeycomb stack 3 in front of extraction bracket bolts on the rear edge of
the platform and centered left to right.
Figure 2-7. Honeycomb Stacks 1 and 3 Positioned on Platform
2-9
FM 4-20.108/TO 13C7-2-491
POSITIONING LOAD
2-10. Use four 12-foot (2-loop), type XXVI, nylon slings to 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-Gators
as shown in Figure 2-8.
1
1
Position the front M-Gator on honeycomb stack 1 ensuring the felt tailgate is against
the center equipment box. Adjust the honeycomb stack so each tire will be centered over
a cutout in the honeycomb stack.
2
2
Position the rear M-Gator on honeycomb stack 3 ensuring the felt tailgate is against
the center equipment box. Each tire will be centered over a cutout in the honeycomb
stack.
Figure 2-8. M-Gators Positioned
2-10
FM 4-20.108/TO 13C7-2-491
LASHING M-GATORS
2-11. Lash the M-Gators to the platform according to FM 10-500-2/TO 13C7-1-5
and as shown in Figures 2-9 through 2-15.
NOTE: Place all load binders near the platform in case adjustments to the lash-
ings are needed.
1A
2
1
1
Lashing
Tiedown
Instructions
Number
Clevis Number
Pass lashing through :
1
1
Front left tiedown poin t
2
1A
Front right tiedown poin t
Figure 2-9. Lashings 1 and 2 Installed
2-11
FM 4-20.108/TO 13C7-2-491
3
2 A
Lashing
Tiedown
Instructions
Number
Clevis Number
Pass lashing through :
3
Tiedown-ring 2A
Right rear tiedown point
4
Tiedown-ring 2B
Left rear tiedown point
Figure 2-10. Lashings 3 and 4 Installed
2-12
FM 4-20.108/TO 13C7-2-491
5
5
Lashing
Tiedown
Instructions
Number
Clevis Number
Pass lashing through :
5
5
Front right tiedown poin t
6
5A
Front left tiedown poin t
Figure 2-11. Lashings 5 and 6 Installed
2-13
FM 4-20.108/TO 13C7-2-491
7
9
Lashing
Tiedown
Instructions
Number
Clevis Number
Pass lashing through :
7
9
Rear left tiedown point
8
9A
Rear right tiedown point
Figure 2-12. Lashings 7and 8 Installed
2-14

 

 

 

 

 

 

 

 

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