FM 4-20.113 Airdrop of Supplies and Equipment: Rigging Trailers (March 2009) - page 4

 

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FM 4-20.113 Airdrop of Supplies and Equipment: Rigging Trailers (March 2009) - page 4

 

 

Chapter 5
Notes. 1. All measurements are given in inches.
2. This drawing is not drawn to scale.
¾ X 6 X 22
PLYWOOD
22
6
TOP
VIEW
40
9
24
STACK 4
18
24
STACKS 5 AND 6
Stack
Width
Length
Number
Pieces
(Inches)
(Inches)
Material
Instructions
4
9
40
24
Honeycomb
Glue flush to forma base.
6
6
22
Honeycomb
Glue two stacks of three layers on
the base as shown.
2
6
22
¾ inch Plywood
Place and glue on top of 6- by 22-
inch pieces of honeycomb.
5 & 6
1
18
24
Honeycomb
Stacks 5 and 6 consist of one layer.
Figure 5-6. Honeycomb Stacks 4 through 6 Prepared
5-6
FM 4-20.113/TO 13C7-3-51
27 March 2009
Rigging 400-Gallon Water Trailer on a 12-Foot, Type V Platform for Low-Velocity Airdrop
Notes. 1. All measurements are given in inches.
2. This drawing is not drawn to scale.
FRONT
13
34
STACK
4
24
STACK
3
42
13
STACK
STACK
STACK
12
6
2
5
STACK
1
36
REAR
FLUSH WITH REAR
EDGE OF PLATFORM
Figure 5-7. Honeycomb Stacks Positioned on Platform
27 March 2009
FM 4-20.113/TO 13C7-3-51
5-7
Chapter 5
PREPARING THE TRAILER
5-4. Prepare the trailer as explained below.
z
Prepare the M149A1 trailer as shown in Figure 5-8.
z
Prepare the M149A2 trailer as shown in steps 1, 3, 4, and 5 of Figure 5-8. Further prepare the
M149A2 trailer as shown in Figure 5-9.
2
3
6
4
7
5
1 Fill the trailer with 400 gallons of potable water (not shown).
2 Secure manhole and filler pipe covers.
3 Secure intervehicular cable, hose and safety chains, fold them along the drawbar and secure
them in place with type III nylon cord and tape.
4 Close and latch the piping box covers, secure them with type III nylon cord. Pad the forward
edge of the piping box with cellulose padding and tape.
5 Pad and tape the drawbar, lights, and reflectors.
6 Pass a 15-foot lashing around the tank and main frame member at a point forward of the
second crossmember and secure with a D-ring and load binder on the underside of the tank.
Install a second 15-foot lashing in the same manner at the rear crossmember.
7 Pass a 15-foot lashing around the left and right main frame members at a point forward of the
second crossmember, and secure it with a D-ring and load binder. Install the second lashing
in the same manner at the rear crossmember.
Figure 5-8. Trailer Prepared
5-8
FM 4-20.113/TO 13C7-3-51
27 March 2009
Rigging 400-Gallon Water Trailer on a 12-Foot, Type V Platform for Low-Velocity Airdrop
1
2
1 Secure the manhole cover with the eyebolt and wing nut.
2 Pass three 15-foot lashings around the tank and over the manhole cover. Secure them with
three D-rings and load binders
Figure 5-9. M149A2 Prepared
27 March 2009
FM 4-20.113/TO 13C7-3-51
5-9
Chapter 5
LIFTING AND POSITIONING THE TRAILER
5-5. Install the lifting slings and position the trailer as shown in Figure 5-10.
Notes. 1. All measurements are given in inches.
2. This drawing is not drawn to scale.
4
3
5
5
1
2
14
1 Pass one end of a 12-foot (2-loop), type XXVI nylon webbing sling around the drawbar frame
and through its own loop. Install a second sling to the other side of the drawbar frame in the
same manner (not shown).
2 Pass a 12-foot (2-loop), type XXVI nylon webbing sling around the left rear main frame, up
through the left rear lifting provision, and through its own loop. Attach the second sling
around the right rear main frame in the same manner (not shown).
3 Lift the trailer. Raise and lock the caster wheel into the travel position.
4 Safety tie the caster wheel with type III nylon cord in two places.
5 Position the trailer on the honeycomb stacks with the rear of the trailer flush with the front
edge of the platform and the lunette overhanging the rear of the platform by 14 inches.
6 Remove the lifting slings (not shown).
Figure 5-10. Lifting and Positioning the Trailer
5-10
FM 4-20.113/TO 13C7-3-51
27 March 2009
Rigging 400-Gallon Water Trailer on a 12-Foot, Type V Platform for Low-Velocity Airdrop
LASHING LOAD TO PLATFORM
5-6. Lash the trailer 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 5-11.
Note. Pad any sharp edges on the load where a lashing may pass. Use cellulose padding and
masking tape.
Note. Left, right, front, and rear refer to the trailer, NOT the platform.
3
9
7
5
1
6
4
3
1
2
Lashing
Tie-down
Instructions
Number
Clevis Number
Pass lashing:
1
1
Through left wheel.
2
1A
Through right wheel.
3
2
Through left rear tiedown provision.
4
2A
Through right rear tiedown provision.
5
3
Through left wheel.
6
3A
Through right wheel.
7
4
Through lunette.
8
4A
Through lunette.
9
6
Through left front tiedown provision.
10
6A
Through right front tiedown provision.
Figure 5-11. Trailer Lashed to Platform
27 March 2009
FM 4-20.113/TO 13C7-3-51
5-11
Chapter 5
PREPARING AND POSITIONING THE PARACHUTE STOWAGE
PLATFORM
5-7. Construct the parachute stowage platform as shown in Figure 5-12. Install the parachute stowage
platform as shown in Figure 5-13.
Notes. 1. All measurements are given in inches.
2. This drawing is not drawn to scale.
3. All holes are 2-inches in diameter.
2 X 4 X 13LUMBER
2
2
17
FRONT
34
2” HOLES
1
¾ X 48 X 60
PLYWOOD
2 X 4 X 60 LUMBER
REAR
1 Build the parachute stowage platform as shown.
Figure 5-12. Parachute Stowage Platform Built
5-12
FM 4-20.113/TO 13C7-3-51
27 March 2009
Rigging 400-Gallon Water Trailer on a 12-Foot, Type V Platform for Low-Velocity Airdrop
1
4
2
3
10
5
5
1 Glue three 6- by 12-inch pieces of honeycomb and position on each side of the drawbar
frame.
2 Place a 36- by 36-inch piece of honeycomb on top of the two 6- by 12-inch honeycomb
stacks.
3 Place a 6- by 12-inch piece of honeycomb on the forward edge of each piping box.
4 Position the stowage platform on the honeycomb stacks.
5 Lash the stowage platform to clevises 5 and 5A through the front and rear holes in the
platform using two 15-foot lashings, D-rings, and load binders.
Figure 5-13. Parachute Stowage Platform Installed
27 March 2009
FM 4-20.113/TO 13C7-3-51
5-13
Chapter 5
INSTALLING LOAD COVER
5-8. Install the load cover as shown in Figure 5-14.
2
1
1 Secure all four corners of a 60- by 144-inch load cover to convenient points on the load with
type III nylon cord.
2 Run two additional lengths of type III nylon cord over the top of the trailer and secure to the
handles on the fenders.
Figure 5-14. Load Cover Installed
5-14
FM 4-20.113/TO 13C7-3-51
27 March 2009
Rigging 400-Gallon Water Trailer on a 12-Foot, Type V Platform for Low-Velocity Airdrop
INSTALLING AND SAFETY TIEING THE SUSPENSION SLINGS
5-9. Install and safety tie the suspension slings as shown in Figure 5-15.
4
3
3
5
6
2
1
1 Attach a 12-foot (2-loop), type XXVI nylon sling to the bell end of a large clevis. Attach the
large clevis to the right front tandem link assembly. Repeat for the opposite side.
2 Attach a 12-foot (2-loop), type XXVI nylon sling to the bell end of a large clevis. Attach the
large clevis to the right rear tandem link assembly. Repeat for the opposite side.
3 Wrap a 10- by 30-inch piece of felt around each suspension sling where the slings contact
the load. Tape the felt from a point 6 inches below the felt to 6 inches above the felt.
4 Raise the slings and install a deadman’s tie on the suspension slings as shown in FM 4-
20.102/MCRP 4-11.3J/NAVSEA SS400-AB-MMO-010/TO 13C7-1-5.
5 Safety tie the rear suspension slings to the middle holes in the stowage platform with type III
nylon cord.
6 Safety tie the front suspension slings to the fender handles with type III nylon cord.
Figure 5-15. Suspension Slings Installed and Safety Tied
27 March 2009
FM 4-20.113/TO 13C7-3-51
5-15
Chapter 5
STOWING CARGO PARACHUTES
5-10. Prepare, stow, and restrain two G-11B 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 5-16.
1
3
2
19
1 Position two G-11B cargo parachutes on the parachute stowage platform according to FM 4-
20.102/MCRP 4-11.3J/NAVSEA SS400-AB-MMO-010/TO 13C7-1-5.
2 Install the parachute restraint strap using type VIII nylon webbing on bushings 19 and 19A.
3 Install the parachute release strap according to FM 4-20.102/MCRP 4-11.3J/NAVSEA
SS400-AB-MMO-010/TO 13C7-1-5.
Figure 5-16. Cargo Parachutes Positioned and Restrained
5-16
FM 4-20.113/TO 13C7-3-51
27 March 2009
Rigging 400-Gallon Water Trailer on a 12-Foot, Type V Platform for Low-Velocity Airdrop
INSTALLING PARACHUTE RELEASE SYSTEM
5-11. Prepare and install an M-1 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 5-17.
3
2
4
1
5
6
1 Center a 12- by 16-inch piece of honeycomb on the top rear edge of the trailer. Tape the
edges and secure with type III nylon cord.
2 Center an M-1 parachute release assembly on top of the honeycomb.
3 Attach the parachute riser extensions to the parachute release connectors.
4 Attach the suspension slings to the lower suspension links.
5 Fold the excess suspension slings and safety tie with type I, ¼-inch cotton webbing.
6 Tie the front and rear M-1 parachute release safety ties to convenient points on the load with
Type III nylon cord.
Figure 5-17. M-1 Parachute Release Installed
27 March 2009
FM 4-20.113/TO 13C7-3-51
5-17
Chapter 5
INSTALLING EXTRACTION SYSTEM
5-12. Install the extraction system as shown in Figure 5-18.
1
4
2
3
1 Install the components of the EFTC according to FM 4-20.102/MCRP 4-11.3J/NAVSEA
SS400-AB-MMO-010/TO 13C7-1-5. Use the forward mounting holes for the EFTC actuator
brackets.
2 Attach a 9-foot (2-loop), type XXVI nylon sling to be used as a deployment line.
3 Use a 12-foot cable and safety tie the cable to convenient points on the platform with type I,
¼-inch cotton webbing. Tie the cable to tiedown ring D6 with type I, ¼-inch cotton webbing.
4 Secure the excess and safety tie the deployment line and to the lunette with type I, ¼-inch
cotton webbing.
Figure 5-18. Extraction System Installed
5-18
FM 4-20.113/TO 13C7-3-51
27 March 2009
Rigging 400-Gallon Water Trailer on a 12-Foot, Type V Platform for Low-Velocity Airdrop
PLACING EXTRACTION PARACHUTE
5-13. 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. Place the extraction
parachute and line on the load for installation in the aircraft.
INSTALLING PROVISIONS FOR EMERGENCY RESTRAINTS
5-14. Select and install the provisions for the emergency aft restraints according to the emergency aft
restraint requirements table in FM 4-20.102/MCRP 4-11.3J/NAVSEA SS400-AB-MMO-010/TO 13C7-1-
5.
MARKING RIGGED LOAD
5-15. 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 5-19. Complete Shipper's Declaration for Dangerous Goods. If
the load varies from the one shown, the weight, height, CB, and parachute requirements must be
recomputed.
EQUIPMENT REQUIRED
5-16. Use the equipment listed in Table 5-1 to rig this load.
27 March 2009
FM 4-20.113/TO 13C7-3-51
5-19
Chapter 5
CAUTION
Make the final rigger inspection required by AR 59-4 and FM 4-
20.102/MCRP
4-11.3J/NAVSEA SS400-AB-MMO-010/TO
13C7-1-5
before the load leaves the rigging site.
C/B
RIGGED LOAD DATA
Weight: Load Shown
7,200 pounds
Maximum Weight Load
10,000 pounds
Height
86 inches
Width
108 inches
Overall Length
158 inches
Overhang: Front
0
Rear (lunette)
14 inches
Center of Balance (CB) (from front edge of the platform)
88 inches
Extraction System with 12-foot cable (adds 4 inches to the length of the load)
Figure 5-19. M149A1 400-Gallon Water Trailer Rigged on a 12-Foot, Type V Platform for Low-
Velocity Airdrop
5-20
FM 4-20.113/TO 13C7-3-51
27 March 2009
Rigging 400-Gallon Water Trailer on a 12-Foot, Type V Platform for Low-Velocity Airdrop
Table 5-1. Equipment Required for Rigging the M149A1 400-Gallon Water Trailer on a 12-Foot,
Type V Platform for Low-Velocity Airdrop
National
Item
Quantity
Stock Number
8040-00-273-8713
Adhesive paste, 1-gal.
As required
1670-01-035-6054
Bridle, extraction line bag
1
4030-00-090-5354
Clevis, suspension, 1-inch (large)
5
4030-00-678-8562
Clevis, suspension, (medium)
4
8305-00-880-8155
Cloth, coated (nylon, type II, 17.0 oz, green, 60-in)
As required
4020-00-240-2146
Cord, nylon, type III, 550-lb
As required
1670-00-434-5783
Coupling, airdrop extraction force transfer, w/12-ft. cable
1
1670-00-360-0328
Cover, clevis
2
8135-00-664-6958
Cushioning material (Cellulose padding)
As required
8305-00-958-3685
Felt, 1/2-inch thick
As required
1670-01-183-2678
Leaf, extraction line (line bag) ( add 2 for C-17)
2
Line extraction:
1670-01-062-6313
60-foot (3-loop), type XXVI (for C-130)
1
1670-01-107-7651
140-foot (3-loop), type XXVI (for C-17)
1
1670-01-064-4452
60-foot (1-loop), type XXVI (for C-17), (drogue line)
1
1670-00-783-5988
Link assembly, type IV (C-17 only)
1
Link assembly, two-point, small, 3 ¾-inch
1
Lumber:
5510-00-220-6146
2- by 4- by 96-inch
1
5315-00-010-4659
Nail, steel, common, 8D
As required
1670-00-753-3928
Pad, energy-dissipating (honeycomb)
13 sheets
1670-01-016-7841
Parachute, cargo, G-11B
2
Parachute, cargo, extraction:
1670-01-063-3716
22-foot
1
1670-01-063-3715
15-foot (C-17 only)
1
Platform, airdrop, type V, 12-foot:
1670-01-162-2372
Clevis assembly (type V)
12
1670-01-162-2376
Extraction bracket assembly
1
1670-01-247-2389
Link, suspension bracket, type V
2
1670-01-162-2381
Tandem link assembly (Multipurpose link)
4
5530-00-128-4981
Plywood, 3/4-inch
1 sheet
27 March 2009
FM 4-20.113/TO 13C7-3-51
5-21
Chapter 5
Table 5-1. Equipment Required for Rigging the M149A1 400-Gallon Water Trailer on a 12-Foot,
Type V Platform for Low-Velocity Airdrop (Continued)
National
Item
Quantity
Stock Number
1670-01-097-8816
Release, cargo parachute, M-1
1
Sling, cargo, airdrop:
1670-00-753-3790
9-foot (2-loop), type XXVI
2
1670-01-062-6303
12-foot (2-loop), type XXVI
4
1670-01-062-6302
20-foot (2-loop), type XXVI
2
1670-00-998-0116
Strap, parachute, release
1
7501-00-266-5016
Tape, adhesive, 2-inch
As required
1670-00-937-0271
Tie-down assembly, 15-foot.
19
1670-01-483-8259
Link, Parachute, Connector (H-block) (C-17 only)
1
Webbing:
8305-00-268-2411
Cotton, 1/4-inch, type I
As required
8305-00-082-5752
Nylon, tubular, 1/2-inch
As required
8305-00-261-8585
Nylon, type VIII
As required
5-22
FM 4-20.113/TO 13C7-3-51
27 March 2009
Chapter 6
Rigging Ammunition Trailer on a 12-Foot, Type V Platform
for Low-Velocity Airdrop
DESCRIPTION OF THE LOAD
6-1. The 1 ½-ton, 2-wheeled, ammunition trailer (Figure 6-1) is rigged on a 12-foot, type V airdrop
platform using two G-11 cargo parachutes. The trailer may be rigged with or without an accompanying
load. The accompanying load in the trailer may weigh a maximum of 3,000 pounds. The total weight of
the accompanying loads in the trailer and on the platform must not exceed 5,090 pounds. The accompany
loads shown in this chapter, 24 rounds of 155-millimeter projectiles, 24 powder canisters, and three boxes
of primers and fuses, weigh 3,292 pounds.
CAUTION
Only ammunition listed in FM 4-20.153/MCRP 4-11.3B/TO 13C7-18-41
may be airdropped.
Figure 6-1. 1 ½-Ton Ammunition Trailer
27 March 2009
FM 4-20.121/TO 13C7-6-21
6-1
Chapter 6
PREPARING PLATFORM
6-2. Prepare a 12-foot, type V airdrop platform as shown in Figure 6-2.
CLEVISES 22A THROUGH 1A
FRONT
REAR
CLEVISES 22 THROUGH 1
Step:
1. Inspect, or assemble and inspect, a 12-foot, type V airdrop platform as outlined in TM 10-
1670-268-20&P/TO 13C7-52-22.
2. Install a tandem link to the front of each platform side rail using holes 1, 2, and 3.
3. Install a tandem link to the rear of each platform side rail using holes 22, 23, and 24.
4. Install a clevis on bushings 1, 3 and 4 (triple) of each front tandem link.
5. Install a clevis on bushings 1, 2, 3, and 4 of each rear tandem link.
6. Starting at the front of each platform side rail, install clevises on the bushings bolted to holes
4, 5, 6 (triple), 7, 8, 11, 16, 18, 19 (triple), 20, and 21 (triple).
7. Starting at the front of the platform, number the clevises 1 through 22 on the right side and
1A through 22A on the left side
8. 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 6-2. Platform Prepared
6-2
FM 4-20.113/TO 13C7-3-51
27 March 2009
Rigging Ammunition Trailer on a 12-Foot, Type V Platform for Low-Velocity Airdrop
STOWING PLATFORM ACCOMPANYING LOADS
6-3. Construct the endboards for the accompanying loads as shown in Figure 6-3. Prepare, stow, and lash
the front accompanying loads as shown in Figures 6-4 and 6-5. Prepare, stow, and lash the rear
accompanying loads as shown in Figures 6-6 and 6-7.
Notes. 1. All measurements are given in inches.
2. This drawing is not drawn to scale.
6
1
2
4
3
¾ X 24 X 86
2
PLYWOOD
3
2
6
4
2
2
4
¾ X 24 X 89
12
PLYWOOD
2
4
1 Prepare two endboards for the front accompanying load.
2 Prepare two endboards for the rear accompanying load.
Figure 6-3. Endboards Constructed
27 March 2009
FM 4-20.113/TO 13C7-3-51
6-3
Chapter 6
2
B2
B1
FRONT
A2
A1
1
1 Pass a 15-foot lashing through tiedown rings A2 and A1.
2 Pass a 15-foot lashing through tiedown rings B2 and B1.
Figure 6-4. Front Accompanying Load Prepared and Stowed on Platform
6-4
FM 4-20.113/TO 13C7-3-51
27 March 2009
Rigging Ammunition Trailer on a 12-Foot, Type V Platform for Low-Velocity Airdrop
3
5
FRONT
4
3 Bind a group (eight rounds) of projectiles with a 15-foot lashing. Bind two more groups.
4 Center two 84- by 28-inch pieces of honeycomb on the platform 10 inches from the front
edge of the platform.
5 Place the three groups of projectiles on the honeycomb. Place the bases of the projectiles
toward the front of the platform.
Figure 6-4. Front Accompanying Load Prepared and Stowed on Platform (Continued)
27 March 2009
FM 4-20.113/TO 13C7-3-51
6-5
Chapter 6
7
6
8
8
9
6 Place an 84- by 28-inch piece of honeycomb on top of the projectiles.
7 Place a ¾- by 84- by 28-inch piece of plywood on top of the honeycomb.
8 Place a 5- by 23-inch piece of honeycomb at each end of the projectile bases.
9 Evenly space five 11- by 23-inch pieces of honeycomb against the bases of the projectiles.
Figure 6-4. Front Accompanying Load Prepared and Stowed on Platform (Continued)
6-6
FM 4-20.113/TO 13C7-3-51
27 March 2009
Rigging Ammunition Trailer on a 12-Foot, Type V Platform for Low-Velocity Airdrop
11
12
10
FRONT
10 Place one front endboard in front of the projectiles against their bases.
11 Place on front endboard to the rear of the projectiles against their tops.
12 Route the pre-positioned lashings over the endboards. Secure the lashings on top of the
load according to FM 4-20.102/MCRP 4-11.3J/NAVSEA SS400-AB-MMO-010/TO 13C7-1-5.
Figure 6-4. Front Accompanying Load Prepared and Stowed on Platform (Continued)
27 March 2009
FM 4-20.113/TO 13C7-3-51
6-7
Chapter 6
5
2
3
8
6
7
FRONT
4
1
9
8
4
3
7
2
6
5
Lashing
Tie-down
Instructions
Number
Clevis Number
Pass lashing:
1*
2 and 2A
Through top cutouts of the rear endboard.
2*
3 and 3A
Over the top of the projectiles.
3*
4 and 4A
Through middle cutouts of the rear endboard.
4*
5 and 5A
Through bottom cutouts of the front endboard.
5*
6 and 6A
Over the top of the projectiles.
6*
7 and 7A
Through middle cutouts of the front endboard.
7*
8 and 8A
Through bottom cutouts of the rear endboard.
8*
9 and 9A
Through top cutouts of the front endboard.
* 30-Foot Lashing
Figure 6-5. Front Accompanying Load Lashings 1 through 8 Installed
6-8
FM 4-20.113/TO 13C7-3-51
27 March 2009
Rigging Ammunition Trailer on a 12-Foot, Type V Platform for Low-Velocity Airdrop
2
REAR
1
1 Center two 84- by 36-inch pieces of honeycomb 5 inches from the rear of the platform.
2 Place two 30-foot lashings across the honeycomb.
Figure 6-6. Rear Accompanying Load Prepared and Stowed on Platform
27 March 2009
FM 4-20.113/TO 13C7-3-51
6-9
Chapter 6
8
7
6
5
4
REAR
3
9
3 Center 12 powder canisters on the honeycomb between the rails. Alternate the ends of the
canisters.
4 Place an 8-by 36-inch piece of honeycomb on top of the canisters.
5 Place a second layer of canisters on the honeycomb as in step 3.
6 Place a second 8-by 36-inch piece of honeycomb on top of the canisters.
7 Place a ¾- by 80- by 36-inch piece of plywood on top of the honeycomb.
8 Secure the canisters, honeycomb, and plywood with the pre-positioned lashing place in step
2. Secure the lashings on top of the load according to FM 4-20.102/MCRP 4-11.3J/NAVSEA
SS400-AB-MMO-010/TO 13C7-1-5.
9 Place one rear endboard on the front and one on the rear against the canisters.
Figure 6-6 Rear Accompanying Load Prepared and Stowed on Platform (Continued)
6-10
FM 4-20.113/TO 13C7-3-51
27 March 2009
Rigging Ammunition Trailer on a 12-Foot, Type V Platform for Low-Velocity Airdrop
5
4
2
1
6
3
REAR
14
15
16
19
18
20
Lashing
Tie-down
Instructions
Number
Clevis Number
Pass lashing:
1*
15 and 15A
Through top cutouts of the rear endboard.
2*
16 and 16A
Through bottom cutouts of the front endboard.
3*
18 and 18A
Through bottom cutouts of the rear endboard.
4*
19 and 19A
Through top cutouts of the front endboard.
5*
14 and 14A
Over the top of the projectiles.
6*
20 and 20A
Over the top of the projectiles.
* 30-Foot Lashing
Figure 6-7. Rear Accompanying Load Lashings 1 through 6 Installed
27 March 2009
FM 4-20.113/TO 13C7-3-51
6-11
Chapter 6
BUILDING AND POSITIONING HONEYCOMB STACKS
6-4. Build and place the honeycomb stacks as shown in Figure 6-8.
STACK 2
STACK 1
Stack
Width
Length
Number
Pieces
(Inches)
(Inches)
Material
Instructions
1
8
36
62
Honeycomb
Stack and glue pieces centered
between rails and accompanying loads.
1
36
62
¾-inch
Glue on top of honeycomb.
Plywood
1
36
62
Honeycomb
Glue on top of plywood.
2
36
24
Honeycomb
Glue one piece flush with the front of
the stack and one piece flush with the
rear of the stack.
2
36
24
¾-inch
Glue one piece of plywood flush on
Plywood
each 36- by 24-inch piece of
honeycomb.
2
36
24
Honeycomb
Glue one piece of honeycomb flush on
each piece of plywood.
2
3
48
12
Honeycomb
Glue the pieces together flush and
center on top of the rear accompanying
load.
Figure 6-8. Honeycomb Stacks 1 and 2 Built and Positioned
6-12
FM 4-20.113/TO 13C7-3-51
27 March 2009
Rigging Ammunition Trailer on a 12-Foot, Type V Platform for Low-Velocity Airdrop
PREPARING THE TRAILER
6-5. Prepare the trailer as shown in Figure 6-9.
4
3
1
1
2
1 Place the hand brake in the off position.
2 Tie the intervehicular cable, brake hose, and safety chains to the drawbar with type III nylon
card. Tape these items to the drawbar.
3 Route a 15-foot lashing around the toolbox and trailer frame and secure with a D-ring and
load binder.
4 Pad all sharp edges with cellulose wadding and tape.
Figure 6-9. Trailer Prepared
27 March 2009
FM 4-20.113/TO 13C7-3-51
6-13
Chapter 6
STOWING ACCOMPANYING LOAD IN TRAILER
6-6. Stow three boxes of fuses and primers as shown in Figure 6-10. The primers and fuses must be
stowed on top of any other items dropped as part of the accompanying load. The trailer cover and bows
may be stowed in the trailer.
CAUTION
Only ammunition listed in FM4-20.153/MCRP 4-11.3B/TO 13C7-18-41
may be airdropped.
2
3
1
1 Center a 20- by 20-inch piece of honeycomb in the trailer bed.
2 Place three boxes of primers and fuses on the honeycomb.
3 Lash the primers and fuses to the trailer bed with a 15-foot lashing routing the lashing
through the box handles. Secure the lashing with a D-ring and load binder.
Figure 6-10. Accompanying Load Stowed in Trailer
6-14
FM 4-20.113/TO 13C7-3-51
27 March 2009
Rigging Ammunition Trailer on a 12-Foot, Type V Platform for Low-Velocity Airdrop
LIFTING AND POSITIONING THE TRAILER
6-7. Install the lifting slings and position the trailer as shown in Figure 6-11.
2
1
3
4
1 Attach a 12-foot (2-loop), type XXVI nylon sling to each rear tiedown bracket with a medium
suspension clevis.
2 Attach a 12-foot (2-loop), type XXVI nylon sling to each front tiedown bracket with a medium
suspension clevis.
3 Lift the trailer. Raise and lock the trailer tongue wheel into the travel position.
4 Position the trailer on the honeycomb stacks with the axle centered on stack 1 and the
lunette overhanging the rear of the platform by 32 inches.
5 Remove the lifting slings (not shown).
Figure 6-11. Lifting and Positioning the Trailer
27 March 2009
FM 4-20.113/TO 13C7-3-51
6-15
Chapter 6
LASHING LOAD TO PLATFORM
6-8. Lash the trailer 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 6-12 and 6-13.
Note. Pad any sharp edges on the load where a lashing may pass. Use cellulose padding and
masking tape.
Note. Left, right, front, and rear refer to the trailer, NOT the platform.
5
1
3
7
1
13
11
10
Lashing
Tie-down
Instructions
Number
Clevis Number
Pass lashing:
1
1
Through left wheel.
2
1A
Through right wheel.
3
10
Around the mainframe rail, to the rear of the spring bracket, left
side of the trailer.
4
10A
Around the mainframe rail, to the rear of the spring bracket, right
side of the trailer.
5
11
Around the mainframe rail, in front of the second cross member,
left side of trailer.
6
11A
Around the mainframe rail, in front of the second cross member,
left side of trailer.
7
13
Through left wheel.
8
13A
Through right wheel.
Figure 6-12. Lashing 1 through 8 Installed
6-16
FM 4-20.113/TO 13C7-3-51
27 March 2009
Rigging Ammunition Trailer on a 12-Foot, Type V Platform for Low-Velocity Airdrop
Note. Left, right, front, and rear refer to the trailer, NOT the platform.
11
21
17
9
Lashing
Tie-down
Instructions
Number
Clevis Number
Pass lashing:
9
17
Through the lower spring bracket, left side of trailer.
10
17A
Through the lower spring bracket, right side of trailer.
11
21
Around the mainframe rail, to the rear of the second cross member,
left side of trailer.
12
21A
Around the mainframe rail, to the rear of the second cross member,
right side of trailer.
Figure 6-13. Lashing 9 through 12 Installed
27 March 2009
FM 4-20.113/TO 13C7-3-51
6-17
Chapter 6
INSTALLING AND SAFETY TIEING THE SUSPENSION SLINGS
6-9. Install and safety tie the suspension slings as shown in Figure 6-14.
4
1
2
2
1 Place two 36- by 74-inch pieces of honeycomb side by side on top of the trailer. Tape the
edges of the honeycomb. Secure the honeycomb with six lengths of type III nylon cord to
convenient points on the load.
2 Attach a 12-foot (2-loop), type XXVI nylon sling to the bell end of a large clevis. Attach the
large clevis to the right front tandem link assembly. Repeat for the opposite side.
3 Attach a 12-foot (2-loop), type XXVI nylon sling to the bell end of a large clevis. Attach the
large clevis to the right rear tandem link assembly. Repeat for the opposite side.
4 Raise the slings and install a deadman’s tie on the suspension slings as shown in FM 4-
20.102/MCRP 4-11.3J/NAVSEA SS400-AB-MMO-010/TO 13C7-1-5.
Figure 6-14. Suspension Slings Installed and Safety Tied
6-18
FM 4-20.113/TO 13C7-3-51
27 March 2009
Rigging Ammunition Trailer on a 12-Foot, Type V Platform for Low-Velocity Airdrop
PREPARING AND POSITIONING THE PARACHUTE STOWAGE
PLATFORM
6-10. Construct the parachute stowage platform as shown in Figure 6-15. Install the parachute stowage
platform as shown in Figure 6-16.
Notes. 1. All measurements are given in inches.
2. This drawing is not drawn to scale.
3. All holes are 2-inches in diameter.
3
3
2 X 6 X 60 LUMBER
24
¾ X 48 X 60
PLYWOOD
2” HOLES
1
2 X 6 X 60 LUMBER
REAR
1 Build the parachute stowage platform as shown.
Figure 6-15. Parachute Stowage Platform Built
27 March 2009
FM 4-20.113/TO 13C7-3-51
6-19
Chapter 6
1
3
2
22
12
1 Place the parachute stowage platform on the trailer tongue wheel stand and toolbox.
2 Route a 15-foot lashing from clevis 12 through the right front hole in the parachute stowage
platform and secure with a D-ring and load binder. Repeat on the left side with clevis 12A.
3 Route a 15-foot lashing from clevis 22 through the right rear hole in the parachute stowage
platform and secure with a D-ring and load binder. Repeat on the left side with clevis 22A.
Figure 6-16. Parachute Stowage Platform Installed
6-20
FM 4-20.113/TO 13C7-3-51
27 March 2009
Rigging Ammunition Trailer on a 12-Foot, Type V Platform for Low-Velocity Airdrop
STOWING CARGO PARACHUTES
6-11. Prepare, stow, and restrain two G-11B 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 6-17.
1
3
2
19
1 Position two G-11B cargo parachutes on the parachute stowage platform according to FM 4-
20.102/MCRP 4-11.3J/NAVSEA SS400-AB-MMO-010/TO 13C7-1-5.
2 Install the parachute restraint strap using type VIII nylon webbing on clevises 19 and 19A.
3 Install the parachute release strap according to FM 4-20.102/MCRP 4-11.3J/NAVSEA
SS400-AB-MMO-010/TO 13C7-1-5.
Figure 6-17. Cargo Parachutes Positioned and Restrained
27 March 2009
FM 4-20.113/TO 13C7-3-51
6-21
Chapter 6
INSTALLING PARACHUTE RELEASE SYSTEM
6-12. Prepare and install an M-1 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 6-18.
5
4
2
1
3
5
1 Center an M-1 parachute release assembly on top of the honeycomb.
2 Attach the parachute riser extensions to the parachute release connectors.
3 Attach the suspension slings to the lower suspension links.
4 Fold the excess suspension slings and safety tie with type I, ¼-inch cotton webbing.
5 Tie the front and rear M-1 parachute release safety ties to convenient points on the load with
type III nylon cord.
Figure 6-18. M-1 Parachute Release Installed
6-22
FM 4-20.113/TO 13C7-3-51
27 March 2009
Rigging Ammunition Trailer on a 12-Foot, Type V Platform for Low-Velocity Airdrop
INSTALLING EXTRACTION SYSTEM
6-13. Install the extraction system as shown in Figure 6-19.
4
2
3
1
1 Install the components of the EFTC according to FM 4-20.102/MCRP 4-11.3J/NAVSEA
SS400-AB-MMO-010/TO 13C7-1-5. Use the rear mounting holes for the EFTC actuator
brackets.
2 Attach a 9-foot (2-loop), type XXVI nylon sling to be used as a deployment line.
3 Use a 12-foot cable and safety tie the cable to convenient points on the platform with type I,
¼-inch cotton webbing.
4 Secure the excess deployment line with type I, ¼-inch cotton webbing.
Figure 6-19. Extraction System Installed
27 March 2009
FM 4-20.113/TO 13C7-3-51
6-23

 

 

 

 

 

 

 

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