FM 4-20.119 Airdrop of Supplies and Equipment: Rigging 105-Millimeter Howitzers (MAY 2006) - page 2

 

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FM 4-20.119 Airdrop of Supplies and Equipment: Rigging 105-Millimeter Howitzers (MAY 2006) - page 2

 

 

Rigging M102 Howitzer on Type V Platform
COVERING LOAD
1-22. Cover the load as shown in Figure 1-12.
STOWING COLLIMATOR BOX AND POSITIONING HOWITZER ON
PLATFORM
1-23. Stow the collimator box on the load and position the howitzer on the platform as shown in Figure 1-
24. Lift the howitzer as shown in Figure 1-13, steps 1 and 2.
LASHING HOWITZER
1-24. 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.
INSTALLING SUSPENSION SLINGS AND DEADMAN'S TIE
1-25. Install four 16-foot (2-loop), type XXVI nylon suspension slings as shown in Figure 1-15. Safety
the slings with the deadman's tie as outlined in FM 4-20.102/MCRP 4-11.3J/NAVSEA SS400-AB-MMO-
010/TO 13C7-1-5.
PREPARING STOWAGE PLATFORM AND STOWING CARGO
PARACHUTES
1-26. Prepare the stowage platform and 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.
10 May 2006
FM 4-20.119/TO 13C7-10-31
1-31
Chapter 1
1
2
1
Tape the top edges of the collimator box. Center the collimator box on the front stack of
ammunition boxes. Tie the box to the lashings using three lengths of 1/2-inch tubular
nylon webbing.
2
Set the howitzer on the honeycomb stacks with the breechblock on stack 3 and the base
plate against stack 2. The lunette must overhang the rear of the platform 16 inches.
3
Remove the lifting slings (not shown).
Figure 1-24. Collimator Box Stowed and Howitzer Positioned on Platform
1-32
FM 4-20.119/TO 13C7-10-31
10 May 2006
Rigging M102 Howitzer on Type V Platform
INSTALLING EXTRACTION SYSTEM
1-27. Install the components of the 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 1-25. 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 brackets to the front set of holes on the left platform side rail.
2 Attach a 16-foot release cable to the actuator. Install the actuator to the EFTC mounting
brackets. Run the cable to the rear of the load. Safety the cable to convenient points
along the left rail according to FM 4-20.102/MCRP 4-11.3J/NAVSEA SS400-AB-MMO-
010/TO 13C7-1-5.
Figure 1-25. EFTC Installed
10 May 2006
FM 4-20.119/TO 13C7-10-31
1-33
Chapter 1
4
3
3 Install the latch assembly to the extraction bracket. Attach the release cable to the latch
assembly.
4 Install a 16-foot (2-loop), type XXVI nylon webbing sling as the deployment line.
Figure 1-25. EFTC Installed (Continued)
1-34
FM 4-20.119/TO 13C7-10-31
10 May 2006
Rigging M102 Howitzer on Type V Platform
INSTALLING PROVISIONS FOR EMERGENCY RESTRAINTS
1-28. Install provisions for emergency restraints according to FM 4-20.102/MCRP 4-11.3J/NAVSEA
SS400-AB-MMO-010/TO 13C7-1-5.
INSTALLING RELEASE SYSTEM
1-29. 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.
PLACING EXTRACTION PARACHUTE
1-30. 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
1-31. 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 1-26. If the accompanying load varies from the one shown in
Figure 1-26, the weight, height, CB, and parachute requirements must be recomputed.
10 May 2006
FM 4-20.119/TO 13C7-10-31
1-35
Chapter 1
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
8,800 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 1-26. M102 Howitzer Rigged with 23 Boxes of Ammunition for Low-Velocity Airdrop on
a Type V Platform
1-36
FM 4-20.119/TO 13C7-10-31
10 May 2006
Rigging M102 Howitzer on Type V Platform
EQUIPMENT REQUIRED
1-32. Use the equipment listed in Table 1-2 to rig this load. The equipment required for rigging the
accompanying load is also included.
Table 1-2. Equipment Required for Rigging the M102 Howitzer with 23 Boxes
of Ammunition for Low-Velocity Airdrop on a Type V Platform
National Stock Number
Item
Quantity
8040-00-273-8713
Adhesive, paste, 1-gallon
As required
1670-00-587-3421
Bag, cargo, A-22
1
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
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
1670-01-493-6418
Link assembly, two-point: 3 3/4-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
1670-01-353-8424
Bracket assembly, EFTC
1
1670-01-162-2372
Bracket assembly, extraction
1
1670-01-162-2376
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
10 May 2006
FM 4-20.119/TO 13C7-10-31
1-37
Chapter 1
Table 1-2. Equipment Required for Rigging the M102 Howitzer with 23 Boxes of
Ammunition for Low-Velocity Airdrop on a 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
1-38
FM 4-20.119/TO 13C7-10-31
10 May 2006
Chapter 2
Rigging M102 Howitzer with 1 ¼-Ton High Mobility
Multipurpose Wheeled Vehicle (HMMWV) Truck and
Accompanying Ammunition
DESCRIPTION OF LOAD
2-1. The M102, 105-millimeter howitzer is rigged with the 1 1/4-ton HMMWV truck as its prime mover
and an accompanying load of gun equipment and ammunition on a 32-foot, type V airdrop platform. An
accompanying load weighing 800 to 2,000 pounds must be rigged in the truck. The gun equipment and 8
boxes of ammunition are shown in the truck. Twenty-two boxes of ammunition are rigged on the platform.
This load requires four G-11 cargo parachutes.
PREPARING PLATFORM
2-2. Prepare a 32-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.
Note. If the platform must be assembled, install the suspension links when assembling the
platform. See Figure 2-1 for the location of the suspension links.
Installing Suspension Links. Install the suspension links on assembled platform according to
FM 4-20.102/MCRP 4-11.3J/NAVSEA SS400-AB-MMO-010/TO 13C7-1-5.
Installing Tandem Links. Install tandem links to the front and rear of each side rail as shown in
Figure 2-1.
Installing and Numbering Clevises. Install and number 54 clevis assemblies as shown in Figure
2-1.
10 May 2006
FM 4-20.119/TO 13C7-10-31
2-1
Chapter 2
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
27A THROUGH 1A
LEFT
REAR
FRONT
RIGHT
CLEVISES
Steps:
27 THROUGH 1
1.
Install a suspension link in holes 26, 27, and 28 on each platform side rail. Face the flat
part of the link to the front of the rail.
2.
Install a suspension link in holes 6, 7, and 8 on each platform side rail. Face the flat part of
the link to the front of the rail.
3.
Install a suspension link in holes 37, 38, and 39 on each platform side rail. Face the flat
part of the link to the front of the rail.
4.
Install a suspension link in holes 57, 58, and 59 on each platform side rail. Face the flat
part of the link to the front of the rail.
5.
Install a tandem link on the front of each platform side rail using holes 1, 2, and 3.
6.
Install a clevis on bushing 1 on each front tandem link.
7.
Install a clevis on bushing 4 on the first suspension link on each side.
8.
Install a clevis on bushing 3 on the second suspension link on each side.
9.
Install clevises on bushings 1, 2, and 3 on the third suspension link on each side.
10. Install clevises on bushings 1 and 4 on the fourth suspension link on each side.
11. Starting at the front of each platform side rail, install clevises on each platform side rail
using the bushings bolted on holes 9, 10, 12, 14 (double on right and tripled on left), 29,
30, 31, 33, 35, 36, 43, 44, 47, 48, 50, 61, 62, 63, and 64.
12. Starting at the front of the platform, number the clevises bolted to the right side from 1
through 27 and those bolted to the left side from 1A through 27A.
13. 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 4-20.119/TO 13C7-10-31
10 May 2006
Rigging M102 Howitzer with 1 ¼-Ton High Mobility Multipurpose Wheeled Vehicle (HMMWV) Truck and
Accompanying Ammunition
STOWING ACCOMPANYING LOAD ON THE PLATFORM
2-3. Stow 22 boxes of 105-millimeter ammunition weighing 2,640 pounds on the platform as shown in
Figures 2-2 through 2-4.
5
4
3
2
1
1 Alternate two 36- by 72-inch and two 24- by 72-inch pieces of honeycomb to make two
layers 60 inches wide and 72 inches long. Position this stack 159 inches from the front
edge of the platform.
2 Center a 15-foot lashing 18 inches from the front edge of the stack.
3 Center a 15-foot lashing 52 inches from the front edge of the stack.
4 Place 10 boxes of ammunition on the honeycomb.
5 Secure the lashings placed in steps 2 and 3 above over the boxes with D-rings and load
binders.
Figure 2-2. Ten Boxes of Ammunition Stowed on the Middle of the Platform
10 May 2006
FM 4-20.119/TO 13C7-10-31
2-3
Chapter 2
6
10
9
13
12
11
7
8
9
6 Pass the free end of a 15-foot lashing through clevis 11 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 secure it to clevis 11A with a load binder.
Note. Invert all clevises to which load binders are attached.
7 Pass the free end of a 15-foot lashing through clevis 12A 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 secure it to clevis 12 with a load binder.
8 Pass the free end of a 15-foot lashing through clevis 9 and through its own D-ring. Pull the
lashing taut, and run it over the top of the boxes. Fit a D-ring to the end of the lashing and
secure it to clevis 9A with a load binder.
9 Pass the free end of a 15-foot lashing through clevis 13A and through its own D-ring. Pull the
lashing taut, and run it over the top of the boxes. Fit a D-ring to the end of the lashing and
secure it to clevis 13 with a load binder.
10 Tie two lengths of type III nylon cord between the lashings in steps 6 and 7 on the ends of the
boxes to keep the lashings in place.
Figure 2-2. Ten Boxes of Ammunition Stowed on the Middle of the Platform (Continued)
2-4
FM 4-20.119/TO 13C7-10-31
10 May 2006
Rigging M102 Howitzer with 1 ¼-Ton High Mobility Multipurpose Wheeled Vehicle (HMMWV) Truck and
Accompanying Ammunition
3
7
2
5
1
6
1
4
21
20
18
1 Position two 36- by 74-inch pieces of honeycomb 34 inches from the first stack of
ammunition. Center a 15-foot lashing on the honeycomb.
2 Place six boxes of ammunition on the honeycomb.
3 Secure the lashing placed in step 1 on top of the boxes with a D-ring and a load binder.
Note. Invert all clevises to which load binders are attached.
4 Pass the free end of a 15-foot lashing through clevis 18 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 secure it to clevis 18A with a load binder.
5 Pass the free end of a 15-foot lashing through clevis 21A 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 secure it to clevis 21 with a load binder.
6 Pass the free end of a 15-foot lashing through clevis 20 and through its own D-ring. Pull the
lashing taut, and run it over the top of the boxes. Fit a D-ring to the end of the lashing and
secure it to clevis 20A with a load binder.
7 Tie two lengths of type III nylon cord between the lashings in steps 4 and 5 on the ends of the
boxes to keep the lashing in place.
Figure 2-3. Six Boxes of Ammunition Stowed
10 May 2006
FM 4-20.119/TO 13C7-10-31
2-5
Chapter 2
1
2
3
4
1 Place two 74- by 24-inch pieces of honeycomb 4 inches from the rear edge of the platform.
2 Place two 15-foot lashings from front to rear on the honeycomb.
3 Place six ammunition boxes on the honeycomb as shown.
4 Secure the lashing placed in step 2 with D-rings and load binders. Avoid placing the load
binders on the rear or top of the boxes.
Figure 2-4. Six Boxes of Ammunition Stowed on the Rear of the Platform
2-6
FM 4-20.119/TO 13C7-10-31
10 May 2006
Rigging M102 Howitzer with 1 ¼-Ton High Mobility Multipurpose Wheeled Vehicle (HMMWV) Truck and
Accompanying Ammunition
8
7
5
6
24
5 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-rings at the center of the bottom boxes at the
rear of the platform.
6 Pass one end of the lashing through the handle of the bottom box, through clevis 24, up
through the handle of the top box, and back to the center of the top box.
7 Pass the other end of the lashing to the other side of the load as in step 6 using clevis 24A.
8 Secure the lashing with two D-rings and a load binder on the rear side of the top
ammunition boxes.
Figure 2-4. Six Boxes of Ammunition Stowed on the Rear of the Platform (Continued)
10 May 2006
FM 4-20.119/TO 13C7-10-31
2-7
Chapter 2
14
9
13
12
13
26
10
25
9 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-rings between the two front boxes of
ammunition.
10 Pass one end of the lashing through the handle of the right box, through clevis 25, and
back through the right box handle.
11 Pass the other end of the lashing to the other side of the load as in step 10 using clevis
25A.
12 Secure the lashing in front of the boxes with two D-rings and a load binder.
13 Tie the lashings together with two lengths of type III nylon cord on the right and left sides of
the load.
Note. Invert all clevises to which load binders are attached.
14 Pass the free end of a 15-foot lashing through clevis 26 and through its own D-ring. Run
the lashing over the top rear boxes through the box handles. Fit a D-ring to the end of the
lashing and secure the lashing to clevis 26A with a load binder.
Figure 2-4. Six Boxes of Ammunition Stowed on the Rear of the Platform (Continued)
2-8
FM 4-20.119/TO 13C7-10-31
10 May 2006
Rigging M102 Howitzer with 1 ¼-Ton High Mobility Multipurpose Wheeled Vehicle (HMMWV) Truck and
Accompanying Ammunition
INSTALLING OPTIONAL DRIVE-OFF AIDS ON PLATFORM
2-4. Install the drive-off aids on the platform as shown in Figure 2-5.
Note. The use of dive-off aides is optional.
1
1 Attach the drive-off aids in accordance with FM 4-20.102/MCRP 4-11.3J/NAVSEA SS400-
AB-MMO-010/TO 13C7-1-5.
Figure 2-5. Drive-off Aids Installed on Platform
10 May 2006
FM 4-20.119/TO 13C7-10-31
2-9
Chapter 2
BUILDING HONEYCOMB STACKS
2-5. Build and place the honeycomb stacks as described below.
Build honeycomb stacks 1 through 3 for the HMMWV as shown in Table 2-1 and Figures 2-6 and
2-7.
Build honeycomb stacks 4 through 7 for the M102 howitzer as shown in Figures 2-8 and 2-9.
Position honeycomb stacks on the platform as shown in Figure 2-10.
Table 2-1. Honeycomb Stacks 1 Through 3
Stack
Pieces
Width
Length
Material
Instructions
Number
(inches)
(inches)
1&3
1
24
80
Honeycomb
See Figure 2-6.
3
24
54
Honeycomb
1
24
54
¾-inch
Plywood
1
24
54
Honeycomb
2
20
24
Honeycomb
1
20
24
¾-inch
Plywood
1
20
24
Honeycomb
2
3
26
43
Honeycomb
See Figure 2-7.
3
18
43
Honeycomb
2
18
43
¾-inch
Plywood
2
43
4 x 4
Lumber
1
18
43
Honeycomb
2-10
FM 4-20.119/TO 13C7-10-31
10 May 2006
Rigging M102 Howitzer with 1 ¼-Ton High Mobility Multipurpose Wheeled Vehicle (HMMWV) Truck and
Accompanying Ammunition
7
6
5
4
3
2
1
1 Use an 80- by 24-inch piece of honeycomb to form a base.
2 Center and glue three 54- by 24-inch pieces of honeycomb on the base.
3 Place a 3/4- by 54- by 24-inch piece of plywood over the honeycomb placed in step 2
above.
4 Place one 54- by 24-inch piece of honeycomb on top of the plywood placed in step 3
above.
5 Center two 20- by 24-inch pieces of honeycomb on top of the honeycomb placed in step 4
above.
6 Place a 3/4- by 20- by 24-inch piece of plywood over the honeycomb placed in step 5
above.
7 Place one 20- by 24-inch piece of honeycomb on top of the plywood placed in step 6
above.
Figure 2-6. Stacks 1 and 3 Prepared
10 May 2006
FM 4-20.119/TO 13C7-10-31
2-11
Chapter 2
Notes. 1. This drawing is not drawn to scale.
2. All dimensions are given in inches.
43
27
18
12
8
4
3
2
2
1
1 Glue three 43- by 26-inch pieces of honeycomb flush together to form a base.
2 Center and glue three 43- by 18-inch pieces of honeycomb flush on the base.
3 Nail a 43-inch piece of 4- by 4-inch lumber parallel to each long side and 1 1/2 inches from
each long edge of a 3/4- by 43- by 18 inch piece of plywood. Nail a second 3/4- by 43- by
18-inch piece of plywood to the lumber and flush with the bottom piece of plywood. Glue
the wooden section of the stack flush on the honeycomb placed in step 2 above.
4 Make the cutout as shown in a 43- by 18-inch piece of honeycomb. Glue the honeycomb
flush over the plywood.
Figure 2-7. Stack 2 Prepared
2-12
FM 4-20.119/TO 13C7-10-31
10 May 2006
Rigging M102 Howitzer with 1 ¼-Ton High Mobility Multipurpose Wheeled Vehicle (HMMWV) Truck and
Accompanying Ammunition
Stack 5
Stack 4
Stack
Pieces
Width
Length
Material
Instructions
Number
(inches)
(inches)
4
7
48
12
Honeycomb
Glue and form a stack.
1
12
30
Honeycomb
Center honeycomb on the stack to form a
bridge to the rear.
2
18
12
Honeycomb
Place on piece of honeycomb on each
side of bridge and flush with stack.
1
48
12
Honeycomb
Place honeycomb flush over the bridge
and adjacent pieces.
4
12
12
Honeycomb
Place two pieces flush on each side of the
stack.
5
7
12
12
Honeycomb
Glue and form a stack. Center
honeycomb under bridge from stack 4.
5
12
12
Honeycomb
Stack honeycomb over bridge, flush with
base.
1
12
6
Honeycomb
Place honeycomb on front edge of stack.
Figure 2-8. Honeycomb Stacks 4 and 5 Built
10 May 2006
FM 4-20.119/TO 13C7-10-31
2-13
Chapter 2
Stack 7
Stack 6
Stack
Pieces
Width
Length
Material
Instructions
Number
(inches)
(inches)
6
11
12
36
Honeycomb
Glue and form a stack.
7
8
12
36
Honeycomb
Glue and form a stack.
1
12
36
¾-inch
Glue plywood flush on honeycomb stack.
Plywood
Figure 2-9. Honeycomb Stacks 6 and 7 Built
2-14
FM 4-20.119/TO 13C7-10-31
10 May 2006
Rigging M102 Howitzer with 1 ¼-Ton High Mobility Multipurpose Wheeled Vehicle (HMMWV) Truck and
Accompanying Ammunition
Notes. 1. This drawing is not drawn to scale.
2. All dimensions are given in inches.
40
79
19
28
27
Stack
Stack
Stack
Stack
Stack
Stack
7
6
4 & 5
3
2
1
Stack Number
Position of Stack on Platform
Place stack:
1
Centered flush with front edge of platform.
2
Centered and 35 inches from stack 1 or 59 inches from front edge of platform.
3
Centered and 45 inches from stack 2 or 130 inches from front edge of platform.
4 & 5
Centered and 79 inches from stack 3 or 233 inches from front edge of platform.
6
Centered and 40 inches from stack 5 or 303 inches from front edge of platform.
7
Centered and 19 inches from stack 6 or 334 inches from front edge of platform.
Figure 2-10. Honeycomb Stacks Placed on Platform
10 May 2006
FM 4-20.119/TO 13C7-10-31
2-15
Chapter 2
PREPARING THE HOWITZER
2-6. Prepare the howitzer as shown in Figure 2-11.
3
2
1
1 Secure the gun in the out-of-battery position and lock the travel lock.
2 Plug the gun muzzle with the plug provided.
3 Wrap the forward 3 feet of the gun tube with two pieces of 36- by 36-inch felt tied in place
with type III nylon cord.
Figure 2-11. Howitzer Prepared
2-16
FM 4-20.119/TO 13C7-10-31
10 May 2006
Rigging M102 Howitzer with 1 ¼-Ton High Mobility Multipurpose Wheeled Vehicle (HMMWV) Truck and
Accompanying Ammunition
5
4
8
4
7
6
4 Cover the sights and the breechblock with the covers provided.
5 Cover each sight with an 18- by 24-inch piece of honeycomb. Tape the edges of the
honeycomb and tie it to the sight mounts with type III nylon cord.
6 Tape and tie a 12- by 12-inch piece of honeycomb over the traversing and elevation
wheels with type III nylon cord. Cut a hole in each piece of honeycomb to allow for the
wheel handle.
7 Secure the sections of the rammer staff in the mounts of the left trail with two lengths of
type III nylon cord.
8 Secure the sight case in its mount with the straps provided. Tie the case to the howitzer
with two lengths of type III nylon cord.
Figure 2-11. Howitzer Prepared (Continued)
10 May 2006
FM 4-20.119/TO 13C7-10-31
2-17
Chapter 2
10
9
9 Place a 36- by 96-inch piece of honeycomb over the breechblock and the sight case.
Make a 5- by 5-inch cutout in each front corner to clear the sights. Make a third 5- by 5-
inch cutout to allow for the breech operator handle. Tape and tie the honeycomb in place
with type III nylon cord.
10 Place a 36- by 96-inch piece of honeycomb over the roll bar and over the piece placed in
step 9. Tape and tie it to convenient points with type III nylon cord.
Figure 2-11. Howitzer Prepared (Continued)
2-18
FM 4-20.119/TO 13C7-10-31
10 May 2006
Rigging M102 Howitzer with 1 ¼-Ton High Mobility Multipurpose Wheeled Vehicle (HMMWV) Truck and
Accompanying Ammunition
PREPARING TRUCK
2-7. Prepare the truck as described below.
Make sure the fuel tank is no more than 3/4 full. Prepare the fuel tank filler cap and fuel filler
opening as shown in Figure 2-12. Prepare the fuel tank drain plug as shown in Figure 2-13.
Note. Certain units may be authorized a waiver allowing 95% fuel. One way to verify the tank is
95% full is to fill the tank and withdraw 1 1/4 gallons with a hand pump.
CAUTION
A full tank does not allow for fuel expansion, and is a danger to aircraft
and crew.
Make sure the batteries and battery compartment and any additional hazardous material comply
with AFMAN 24-204(I)/TM 38-250.
Stow the truck on-vehicular equipment (OVE) according to TM 9-2320-280-10/TO 36A12-1A-
2091-1/TM 2320-10/6.
Prepare the cab of the truck as shown in Figure 2-14.
2
1
1
Tie the fuel filler cap to the body of the truck with type III nylon cord.
2
Tape the fuel filler opening with cloth backed tape.
Figure 2-12. Fuel Tank Filler Cap and Opening Prepared
10 May 2006
FM 4-20.119/TO 13C7-10-31
2-19
Chapter 2
1
1
Place a 12-inch length of cloth-backed tape over the fuel tank drain plug.
Figure 2-13. Fuel Tank Drain Plug Prepared
2-20
FM 4-20.119/TO 13C7-10-31
10 May 2006
Rigging M102 Howitzer with 1 ¼-Ton High Mobility Multipurpose Wheeled Vehicle (HMMWV) Truck and
Accompanying Ammunition
2
10
9
4
7
6
5
8
1
Remove all doors, covers, and supporting bows (not shown).
2
Tape the windshield glass on both sides in an X.
3
Remove and pad the mirrors. Secure them under the driver's seat with type III nylon cord
(not shown).
4
Tie the engine start switch in the engine stop position with type I, 1/4-inch cotton webbing.
5
Tie the steering wheel to the seat frame in two places with type III nylon cord, or use the
retractable steering wheel locking cable. If the locking cable is used, secure it to the
steering wheel with type III nylon cord, not a padlock.
6
Tie the emergency brake handle in the off position with type III nylon cord.
7
Place the transmission and four-wheel drive levers in the neutral position.
8
Tie the seat cushions to the seat frames with type III nylon cord. Fold the passenger seats
in four-door trucks and secure them with the pins provided.
9
Tie the fire extinguisher in place with two lengths of type III nylon cord.
10 Tape all instrument panel gauges.
Figure 2-14. Cab Prepared
10 May 2006
FM 4-20.119/TO 13C7-10-31
2-21
Chapter 2
Secure and pad radio equipment in the cab section as shown in Figure 2-15.
2
1
3
1
Secure communications equipment in its mount with chains and padlocks.
2
Tie the communications equipment to its mount with 1-inch tubular nylon webbing.
3
Pad the front of the equipment generously with cellulose wadding taped in place. Pad the
radio handset with cellulose wadding and tie the handset to the mount with type III nylon
cord.
4
Remove antennas and pad the antenna mounts with cellulose wadding taped in place (not
shown).
Figure 2-15. Communications Equipment Secured and Padded
2-22
FM 4-20.119/TO 13C7-10-31
10 May 2006
Rigging M102 Howitzer with 1 ¼-Ton High Mobility Multipurpose Wheeled Vehicle (HMMWV) Truck and
Accompanying Ammunition
Prepare the front of soft-top trucks with foldable windshields as shown in Figure 2-16.
2
1
3
4
1 Cover the breather cap with one layer of felt taped in place.
2 Fold the windshield down over a 78- by 4-inch piece of honeycomb with the top edge of the
windshield aligned with the front edge of the honeycomb.
Note. Where the bumper pads and wipers make contact, make indentations in the honeycomb to
allow for them.
3 Pad under the honeycomb placed in step 2 above with two pieces of felt placed on either
side of the center bulge in the hood.
4 Fold the windshield down over the honeycomb and felt placed in steps 2 and 3 above.
Replace the securing pins in the brackets. Cover the rear side of the folded windshield with
a 78- by 19-inch piece of honeycomb. Make a cutout to allow for the wiper motor.
Figure 2-16. Front of Truck Prepared
10 May 2006
FM 4-20.119/TO 13C7-10-31
2-23
Chapter 2
Notes. 1. This drawing is not drawn to scale.
2. All dimensions are given in inches.
8
9
20
36
6
8
9
9
83
7
6
5
5 Tape all lights and reflectors. Tape the hood latches.
6 Center a 78- by 4-inch piece of honeycomb along the front edge of the hood.
7 Place two 83- by 36-inch pieces of honeycomb, with cutouts as shown, on the hood. Tie
one length of type III nylon cord over the honeycomb to the front coil springs on each side.
Tie two lengths of type III nylon cord from the airlift bracket to the front tie-down bracket on
each side. Tape the honeycomb where the cord passes over the edges.
8 Place a 3/4- by 78- by 19-inch piece of plywood over the honeycomb placed in step 4.
Round the front corners, and drill a 1/2-inch hole 6 inches from the bottom and 1 inch from
each end.
9 Secure the plywood with two lengths of 1/2-inch tubular nylon webbing tied from the airlift
bracket to the windshield securing pin on each side.
Figure 2-16. Front of Truck Prepared (continued)
2-24
FM 4-20.119/TO 13C7-10-31
10 May 2006
Rigging M102 Howitzer with 1 ¼-Ton High Mobility Multipurpose Wheeled Vehicle (HMMWV) Truck and
Accompanying Ammunition
11
10
12
10
13
10 Secure the plywood to the windshield with 1/2-inch tubular nylon webbing tied through the
drilled holes in the plywood and to the mirror brackets (shown), or to the door hinges.
11 Cover the instrument panel with a 23- by 11-inch piece of honeycomb. Make a cutout to
allow for the turn signal lever. Tape the honeycomb in place.
12 Cover the steering wheel with a 24- by 44-inch piece of honeycomb. Tape the edges and
tie the honeycomb to the seat frame with type III nylon cord. Tie the honeycomb at the top
to the windshield securing bracket and to the defroster control knob with type III nylon cord.
13 On trucks equipped with the brush guard, cover the front side with an 83- by 14-inch piece
of honeycomb, tied in place with type III nylon cord.
Figure 2-16. Front of Truck Prepared (continued)
10 May 2006
FM 4-20.119/TO 13C7-10-31
2-25
Chapter 2
Prepare and secure the pioneer tool kit according to TM 9-2320-280-10/TO 36A12-1A-2091-
1/TM 2320-10/6, and as shown in Figure 2-17.
1
2
3
1
Tape all sharp edges of the pioneer tools. Pad the ax head with cellulose wadding.
2
Place the tools in the rack, and secure them with the straps provided, and with type III
nylon cord. For the M1037 (modified) truck, secure the tools with 1/2-inch tubular nylon
webbing.
3
Close and latch the tool rack. Tie the rack in place with type III nylon cord.
Figure 2-17. Pioneer Tool Kit Secured
2-26
FM 4-20.119/TO 13C7-10-31
10 May 2006
Rigging M102 Howitzer with 1 ¼-Ton High Mobility Multipurpose Wheeled Vehicle (HMMWV) Truck and
Accompanying Ammunition
Prepare the underside of the truck as shown in Figure 2-18.
1
2
3
1 Pad the lower control arms on the front and rear of the truck with cellulose wadding taped
in place.
2 Pass a 15-foot lashing over the right frame rail, under the oil pan, and over the left frame
rail. Make sure the lashing goes over the exhaust pipe and then under it. Make sure the
wires running along the frame rail are to the outside of the lashing. Place a 12- by 12-inch
piece of honeycomb and a 2- by 6- by 16-inch piece of lumber between the lashing and the
oil pan. Fasten the lashing with a D-ring and a load binder.
3 Install another lashing just to the rear of the lashing installed in step 2. Route the lashing
in the same way.
Figure 2-18. Underside of Truck Prepared
10 May 2006
FM 4-20.119/TO 13C7-10-31
2-27
Chapter 2
Prepare the truck body as shown in Figure 2-19.
1
1 Drill 1/2-inch holes 2 inches in from each corner of a 3/4- by 24- by 42-inch piece of plywood.
Center the plywood over the cab with one 24-inch edge resting on the bottom of the
windshield frame and the other end on the B-pillar. Secure the plywood to the B-pillar and to
convenient points in the cab with 1/2-inch tubular nylon webbing. This plywood will be used
as a platform for the release.
Figure 2-19. Truck Body Prepared
2-28
FM 4-20.119/TO 13C7-10-31
10 May 2006
Rigging M102 Howitzer with 1 ¼-Ton High Mobility Multipurpose Wheeled Vehicle (HMMWV) Truck and
Accompanying Ammunition
Notes. 1. This drawing is not drawn to scale.
2. All dimensions are given in inches.
2
33
40
9
2
150
5
2
3
4
6
2 If the wooden cargo body sides are installed, pad all sharp edges with cellulose wadding
taped in place.
3 Pass a 15-foot lashing around the upper control arm behind a front wheel and through its
own D-ring. Repeat for the other side of the truck.
4 Pass a 15-foot lashing around the upper control arm behind a rear wheel and through its
own D-ring. Repeat for the other side of the truck.
5 Tape five 6- by 10-inch pieces of honeycomb to a 2- by 6- by 150-inch piece of lumber
spaced as shown. Repeat for the second side board.
6 Bring the lashings positioned in steps 3 and 4 around the boards two turns. Secure the
lashings from the left and right sides of the truck together with D-rings and load binders.
Figure 2-19. Truck Body Prepared (Continued)
10 May 2006
FM 4-20.119/TO 13C7-10-31
2-29
Chapter 2
STOWING HOWITZER EQUIPMENT AND AMMUNITION IN TRUCK
2-8. Stow the howitzer equipment, the gun crew equipment, and eight boxes of
105-millimeter
ammunition in the bed of the truck as shown in Figures 2-20 and 2-21. Loads that vary from the load
shown must be similarly restrained and must weigh no less than 800 pounds and no more than 2,000
pounds.
2
1
4
3
5
6
7
1 Pass a 15-foot lashing through the right front and right center tie-down rings.
2 Pass a 15-foot lashing through the left front and left center tie-down rings.
3 Pass a 15-foot lashing through both center tie-down rings.
4 Place a 15-foot lashing across the cargo bed 10 inches from the front.
5 Pass a 15-foot lashing through the right rear and left center tie-down rings.
6 Pass a 15-foot lashing through the left rear and right center tie-down rings.
7 Pass a 15-foot lashing through both center tie-down rings.
Figure 2-20. Howitzer Equipment Stowed in Truck
2-30
FM 4-20.119/TO 13C7-10-31
10 May 2006
Rigging M102 Howitzer with 1 ¼-Ton High Mobility Multipurpose Wheeled Vehicle (HMMWV) Truck and
Accompanying Ammunition
12
10
11
9
8
8 Place a large ammunition tarp over the cargo bed.
9 Place the four base plate stakes in the holes of a common wooden pallet. Place the pallet
in the front of the cargo bed.
10 Pad two filled fuel cans and two filled water cans with cellulose wadding. Place them
against the left front of the cargo bed.
11 Place the sling bags in the right front of the cargo bed.
12 Place the spare wheel on the pallet and against the front wall.
Figure 2-20. Howitzer Equipment Stowed in Truck (Continued)
10 May 2006
FM 4-20.119/TO 13C7-10-31
2-31
Chapter 2
15
13
14
16
21
19
20
18
17
13 Place the gun display unit box against the fuel cans.
14 Place the section chest against the wheel and the sling bag.
15 Set the self-emplacement stakes between the section chest and the gun display unit box.
16 Fold the A-22 bag and tie it with two lengths of 1/2-inch tubular nylon webbing. Place it on
the pallet behind the boxes.
17 Fold the section tent and place it on top of the A-22 bag.
18 Place the camouflage net on the A-22 bag next to the tent.
19 Place the camouflage net poles on the left side. Tie them together with 1/2-inch tubular nylon
webbing.
20 Place the nuclear, biological, and chemical (NBC) contingency box on top of the section
chest.
21 Place the bag of tent stakes and the fire extinguisher on top of the gun display unit box.
Figure 2-20. Howitzer Equipment Stowed in Truck (Continued)
2-32
FM 4-20.119/TO 13C7-10-31
10 May 2006

 

 

 

 

 

 

 

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