FM 4-20.105-1 Airdrop of Supplies and Equipment: Dual Row Airdrop Systems (Volume, August 2006) - page 7

 

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FM 4-20.105-1 Airdrop of Supplies and Equipment: Dual Row Airdrop Systems (Volume, August 2006) - page 7

 

 

Chapter 5
STOWING DEPLOYMENT PARACHUTE
4-47. Prepare, stow, and install the deployment parachute according to Chapter 2, Section V and as shown
in Figure 5-29.
1
1 Prepare, stow, and install the deployment parachute according to Chapter 2, Section V and
as shown above.
Figure 5-29. Deployment Parachute Installed
5-40
FM 4-20.105-1/TO 13C7-1-51 VOL I
29 August 2006
Rigging M119 105-Millimeter Howitzer and Accompanying Load on Dual Row Airdrop System Platform
INSTALLING PARACHUTE RELEASE SYSTEM
4-48. Build an M-1 parachute release stack. Prepare and install an M-1 release system according to
Chapter 2 and as shown in Figure 5-30.
1
2
1
Cut three 20- by 15-inch pieces of honeycomb and glue together to form the M-1 release
parachute stack. Tape the top edges of the honeycomb. Center the stack against the
front edge of the rear ACS and secure it with type III nylon cord. Place the M-1 release on
the support stack.
2
Attach riser extensions and suspension slings to the M-1 release.
Note. Remove the buffers from the ends of the suspension slings that attach to the M-1 release.
3
Group the riser extensions together and tie, equally spaced, with type I, ¼-inch cotton
webbing making three ties (not shown). S-fold the slack in the front and rear suspension
slings on top of the front and rear ACS according to Chapter 2 of this manual.
4 Attach the arming wire and lanyard to a carrying handle on the parachute with three
alternating half hitches with a knot in the running end (not shown).
Figure 5-30. Parachute Release System Installed
29 August 2006
FM 4-20.105-1/TO 13C7-1-51 VOL I
5-41
Chapter 5
INSTALLING MAST RELEASE KNIVES
4-49. Install the mast release knives according to Chapter 2, Figure 2-45, Steps 4 through 10 and as shown
in Figure 5-31.
2
1
1 The lengths of the left and right ½-inch tubular nylon webbing from the base of the
guillotine knives to the lower suspension links of the M-1 release is 59 inches as shown in
steps 5 and 6 of Figure 2-45.
2 Tie a length of type III nylon cord through the left part of the gun and to the body of the
right top guillotine knife that measures 58 inches from the trunnion (hole) of the equilibrator
arm to the base of the guillotine knife. Repeat for the right part of the gun and left lower
guillotine knife as shown in steps 9 and 10 of Figure 2-45.
Note. All measurements are from knot to knot.
Figure 5-31. Mast Release Knives Installed
5-42
FM 4-20.105-1/TO 13C7-1-51 VOL I
29 August 2006
Rigging M119 105-Millimeter Howitzer and Accompanying Load on Dual Row Airdrop System Platform
MARKING RIGGED LOAD
4-50. Mark the rigged load according to Chapter 2 and as shown in Figure 5-32. A Shipper’s Declaration
for Dangerous Goods is required. If the load varies from the one shown, the weight, height, CB, and
parachute requirements must be recomputed.
EQUIPMENT REQUIRED
4-51. The equipment required to rig this load is listed in Table 5-1.
CAUTION
Make the final rigger inspection required by Chapter 2 before the
load leaves the rigging site.
RIGGED LOAD DATA
Weight: Load shown
11,200 pounds
Maximum load allowed
12,750 pounds
Height (with three G-11D parachutes)
98 inches
Width
94 inches
Overall Length
216 inches
Overhang: Front
0 inches
Rear
0 inches
Center of Balance (from front edge of platform):
94 inches
Figure 5-32. M119 Howitzer and Accompanying Ammunition Rigged on DRAS Platform
29 August 2006
FM 4-20.105-1/TO 13C7-1-51 VOL I
5-43
Chapter 5
Table 5-1. Equipment Required for Rigging M119 Howitzer and Accompanying Ammunition
on DRAS Platform
National Stock Number
Item
Quantity
8040-00-273-8713
Adhesive paste, 1-gallon
As required
4020-00-240-2146
Cord, nylon, type III, 550-pound
As required
Clevis,
4030-00-090-5354
Large
5
4030-00-678-8562
Medium
4
1670-00-360-0328
Cover, clevis, large
3
8135-00-664-6958
Cushioning material, packaging, cellulose wadding
As required
8305-00-191-1101
Felt, ½-inch
As required
1670-01-493-6418
Link assembly, two-point, 3 ¾-inch
9
Lumber:
5510-00-220-6146
2- by 4-inch
As required
5510-00-220-6148
2- by 6-inch
As required
5510-00-220-6274
4- by 4-inch
As required
Plywood:
5530-00-129-7777
½-inch
1 sheet
5530-00-618-8073
¾-inch
6 sheets
5315-00-010-4659
Nail, steel wire, common, 8d
As required
1670-00-753-3928
Pad, energy dissipating, honeycomb
26 sheets
1670-01-487-5461
Static line assembly release away
1
Parachute:
Cargo:
1670-01-016-7841
G-11D
3
1670-00-040-8135
Cargo extraction: 28-foot (deployment parachute)
1
Platform, dual row, 18-foot
1670-01-485-1654
Rail, DRAS
2
1670-01-486-1342
Roller Pad, DRAS
4
1670-01-486-1656
Panel Assembly, Main
9
1670-01-162-2372
Clevis assembly
56
1670-01-097-8816
Release, cargo parachute, M-1
1
Sling, cargo airdrop
For suspension:
1670-01-062-6310
11-foot (4-loop), type XXVI nylon webbing
4
1670-01-062-6306
3-foot (4-loop), type XXVI nylon webbing
8
For deployment:
1670-01-062-6306
3-foot (4-loop), type XXVI nylon webbing
1
For riser extension:
1670-01-062-6313
60-foot (3-loop), type XXVI nylon webbing
3
For ACS:
1670-01-063-7761
16-foot (2-loop), type XXVI nylon webbing
2
5-44
FM 4-20.105-1/TO 13C7-1-51 VOL I
29 August 2006
Rigging M119 105-Millimeter Howitzer and Accompanying Load on Dual Row Airdrop System Platform
Table 5-1. Equipment Required for Rigging M119 Howitzer and Accompanying Ammunition
on DRAS Platform (Continued)
National Stock Number
Item
Quantity
For lifting:
1670-01-062-6303
11-foot (2-loop), type XXVI nylon webbing
3
1670-00-251-1153
Sling cargo, aerial transport, (A7A)
1
1670-00-040-8219
Strap, parachute release, multicut
2
1670-00-937-0271
Knife release, cargo (guillotine)
6
1670-01-487-5464
Outrigger assembly
1
7510-00-266-5016
Tape, adhesive, 2-inch
As required
1670-00-937-0271
Tie-down assembly, 15-foot
58
1670-00-725-1437
Tie-down, cargo, aircraft, (CGU-1B)
5
Webbing:
8305-00-268-2411
Cotton, ¼-inch, type I
As required
Nylon:
8305-00-082-5752
Tubular, ½-inch
As required
8305-00-263-3591
Type VIII
As required
29 August 2006
FM 4-20.105-1/TO 13C7-1-51 VOL I
5-45
This page intentionally left blank.
Chapter 6
Rigging M101A1 or M101A2, ¾-Ton Cargo Trailer with
Accompanying Load on Dual Row Airdrop System
Platform
DESCRIPTION OF LOAD
6-1. The M101A1 or M101A2, ¾-ton cargo trailer (Figure 6-1) with accompanying loads is rigged on a
DRAS airdrop platform.
M101A1 ¾-ton cargo trailer. The M101A1 ¾-ton cargo trailer with accompanying loads,
consisting of 30 boxes of 105-millimeter ammunition and weighing 3,210 pounds, is rigged with
two G-11D cargo parachutes. The accompanying load consisting of 14 boxes of 105-millimeter
ammunition and weighing 1,500 pounds is stowed in the trailer and 16 boxes of 105-millimeter
ammunition are stowed on the platform. The unrigged trailer weighs 1,340 pounds. The
M101A1 trailer is 147 inches long and 71 inches wide. The height of the trailer is 82 inches,
reducible to 51 inches.
M101A2 ¾-ton cargo trailer. The M101A2 ¾-ton cargo trailer with accompanying loads,
consisting of 28 boxes of 105-millimeter ammunition and weighing 2,996 pounds, is rigged with
two G-11D cargo parachutes. The accompanying load consisting of 14 boxes of 105-millimeter
ammunition and weighing 1,500 pounds is stowed in the trailer and 14 boxes of 105-millimeter
ammunition are stowed on the platform. The unrigged trailer weighs 1,375 pounds. The
M101A2 trailer is 147 inches long and 71 inches wide. The height of the trailer is 82 inches,
reducible to 51 inches.
PREPARING PLATFORM
6-2. Inspect, or assemble and inspect, a DRAS platform with outrigger assemblies and outrigger platform
support weldments according to TM 10-1670-268-20&P/TO 13C7-52-22 and as shown in Figure 6-2.
Figure 6-1. M101A1, ¾-Ton Cargo Trailer
29 August 2006
FM 4-20.105-1/TO 13C7-1-51 VOL I
6-1
Chapter 6
CLEVISES
23A THROUGH 1 A
LEFT
REAR
FRONT
RIGHT
CLEVISES
23 THROUGH 1
Step:
1. Starting at the front of each platform side rail, install clevises on the bushings bolted on
holes 1 (doubled), 2 (doubled), 3, 5, 6, 7, 10, 11, 13, 16, 20, 21, 22, 23, 24, 26, 27, 28, 29
(doubled), and 30.
2. Starting at the front of the platform, number the clevises 1 through 23 on the right side and
1A through 23A on the left side.
3. Label the tie-down rings according to Figure 2-2.
Figure 6-2. Platform Prepared
6-2
FM 4-20.105-1/TO 13C7-1-51 VOL I
29 August 2006
Rigging M101A1 or M101A2, ¾-Ton Cargo Trailer with Accompanying Load on Dual Row Airdrop System
Platform
POSITIONING AND LASHING ACCOMPANYING LOADS ON
PLATFORM
6-3. Position and lash the accompanying loads on the platform as shown in Figures 6-3 through 6-8.
Note. All dimensions are given in inches.
B3
B1
1
FRONT
A3
A1
2
FRONT
38
1 Pre-position two 15-foot lashings. Position one lashing through tie-down rings A1 and A3.
Position the second lashing through tie-down rings B1 and B3.
2 Center two 36- by 38-inch pieces of honeycomb 5 inches from the front edge of the
platform.
Figure 6-3. Honeycomb and Lashings Positioned on the Front of Platform
29 August 2006
FM 4-20.105-1/TO 13C7-1-51 VOL I
6-3
Chapter 6
2
1
FRONT
1 Place six ammunition boxes in three stacks of two each on top of the honeycomb.
2 Bind the boxes together using the pre-positioned lashings, two D-rings, and two load
binders.
Figure 6-4. Ammunition Boxes Positioned on the Front of the Platform
6-4
FM 4-20.105-1/TO 13C7-1-51 VOL I
29 August 2006
Rigging M101A1 or M101A2, ¾-Ton Cargo Trailer with Accompanying Load on Dual Row Airdrop System
Platform
A3
2
FRONT
B3
2
FRONT
1 Form two 30-foot lashings according to Figure 2-14.
2 Place the center of the 30-foot lashing in the front center of the ammunition boxes. Pass
one free end of the lashing through the carrying handle of the bottom front box on the right
side, down through tie-down ring A3, and through the carrying handle of the top front box
on the right side. Repeat for left side with opposite free running end using tie-down ring
B3. Secure with two D-rings and a load binder. Do not close the load binder at this time.
Figure 6-5. Ammunition Boxes Lashed and Secured on the Front of the Platform
29 August 2006
FM 4-20.105-1/TO 13C7-1-51 VOL I
6-5
Chapter 6
FRONT
A1
2
FRONT
B1
3
3 Place the center of the 30-foot lashing in the rear center of the ammunition boxes. Pass one
free end of the lashing through the carrying handle of the bottom rear box on the right side,
down through tie-down ring A1, and through the carrying handle of the top rear box on the
right side. Repeat for left side with opposite free running end using tie-down ring B1. Secure
with two D-rings and a load binder. Do not close the load binder at this time.
4 Secure front and rear load binders simultaneously.
Figure 6-5. Ammunition Boxes Lashed and Secured on the Front of the Platform (Continued)
6-6
FM 4-20.105-1/TO 13C7-1-51 VOL I
29 August 2006
Rigging M101A1 or M101A2, ¾-Ton Cargo Trailer with Accompanying Load on Dual Row Airdrop System
Platform
Notes. 1. All measurements are given in inches.
2. This drawing is not drawn to scale.
TOP
4
2
7
19
1
2
8
77
BOTTOM
3
REAR
2
1
Cut two endboards as shown above using two ¾- by 19- by 77-inch pieces of plywood.
2
Center two 36- by 76-inch pieces of honeycomb 128 inches from front edge of platform.
3 Center two 30-foot lashings laterally across the top piece of honeycomb.
Figure 6-6. Honeycomb and Lashings Positioned on the Rear of Platform
29 August 2006
FM 4-20.105-1/TO 13C7-1-51 VOL I
6-7
Chapter 6
2
1
REAR
For the M101A1 ¾-ton trailer:
1 Place 10 ammunition boxes on top of the honeycomb, two layers of five ammunition
boxes.
2 Bind the boxes together using the two pre-positioned lashings, two D-rings, and two load
binders.
For the M101A2 ¾-ton trailer:
1 Place eight ammunition boxes on top of the honeycomb. When positioning the ammunition
boxes, ensure that the top row of boxes consists of five ammunition boxes and the bottom
row has the remaining three ammunition boxes with one box on each outside edge and
one box in the center.
Note. Fill the empty space with honeycomb.
2 Bind the boxes together using the two pre-positioned lashings, two D-rings, and two load
binders.
Figure 6-7. Ammunition Boxes Positioned on the Rear of Platform
6-8
FM 4-20.105-1/TO 13C7-1-51 VOL I
29 August 2006
Rigging M101A1 or M101A2, ¾-Ton Cargo Trailer with Accompanying Load on Dual Row Airdrop System
Platform
1
REAR
17
REAR
3
20
2
18
1 Route a 30-foot lashing through clevis 17 over the top of the boxes and through clevis 17A
and load bind on top of the boxes.
2 Position one endboard to the front of the ammunition boxes with cutouts to the top. Route
a 30-foot lashing through clevis 18 and around and through the right front bottom cutout
and around and through the left front bottom cutout through clevis 18A. Position and
secure the load binder at the front and center of the endboard.
3 Route a 30-foot lashing through clevis 20 and around and through the right front top cutout
and around and through the left front top cutout through clevis 20A. Position and secure
the load binder at the front and center of the endboard.
Figure 6-8. Ammunition Boxes Lashed and Secured on the Rear of the Platform
29 August 2006
FM 4-20.105-1/TO 13C7-1-51 VOL I
6-9
Chapter 6
5
15
4
16
REAR
4 Position the second endboard to the rear of the ammunition boxes with cutouts to the top.
Route a 30-foot lashing through clevis 16 and around and through the right rear bottom cutout
and around and through the left rear bottom cutout through clevis 16A. Position and secure
the load binder at the rear and center of the endboard.
5 Route a 30-foot lashing through clevis 15 and around and through the right rear top cutout
and around and through the left rear top cutout through clevis 15A. Position and secure the
load binder at the rear and center of the endboard.
Figure 6-8. Ammunition Boxes Lashed and Secured on the Rear of the Platform (Continued)
6-10
FM 4-20.105-1/TO 13C7-1-51 VOL I
29 August 2006
Rigging M101A1 or M101A2, ¾-Ton Cargo Trailer with Accompanying Load on Dual Row Airdrop System
Platform
BUILDING AND PLACING HONEYCOMB STACK
6-4. Prepare the honeycomb stacks as shown in Figures 6-9 and 6-10. Position the honeycomb stack as
shown in Figure 6-11.
Note. All measurements are given in inches.
REAR
10 X 6
CUTOUT
FRONT
Stack
Pieces
Width
Length
Material
Instructions
Number
(inches)
(inches)
1
8
12
32
Honeycomb
Form two base stacks of four layers
each in a “V” shape. Cut a 10- by 6
inch cutout on the front outside of the
bottom two layers. Place the stacks
25 inches apart in the rear and 11
inches apart in the front.
1
36
12
Honeycomb
Place honeycomb over the front of the
base stacks to form a bridge. Place
the honeycomb so that the front edge
of the bridge is aligned with the front
outside corners of the base stacks.
1
48
12
Honeycomb
Place honeycomb over the rear of the
base stacks to form a bridge. Place
the honeycomb so that the rear edge
of the bridge is aligned with the rear
outside corners of the base stacks.
14
12
32
Honeycomb
Form two stacks of seven layers
each. Place each stack on top of the
bridge and align it with each base
stack.
Figure 6-9. Honeycomb Stack 1 Prepared
29 August 2006
FM 4-20.105-1/TO 13C7-1-51 VOL I
6-11
Chapter 6
STACK 2
STACK 3
Stack
Pieces
Width
Length
Material
Instructions
Number
(inches)
(inches)
2
7
36
12
Honeycomb
Glue to form base.
4
12
12
Honeycomb
Stack two pieces of honeycomb flush
over each side of the base.
3
12
36
12
Honeycomb
Glue to form stack.
Figure 6-10. Honeycomb Stacks 2 and 3 Prepared
6-12
FM 4-20.105-1/TO 13C7-1-51 VOL I
29 August 2006
Rigging M101A1 or M101A2, ¾-Ton Cargo Trailer with Accompanying Load on Dual Row Airdrop System
Platform
Notes. 1. All measurements are given in inches.
2. This drawing is not drawn to scale.
STACK 3
STACK 2
STACK 1
44
98
Stack Number
Position of Stack on Platform
Place stack:
1
Centered 44 inches from the front edge of platform.
2
Centered 98 inches from the front edge of platform.
3
Center flush against the rear of stack 2.
Figure 6-11. Honeycomb Stacks Placed on Platform
29 August 2006
FM 4-20.105-1/TO 13C7-1-51 VOL I
6-13
Chapter 6
PREPARING THE TRAILER
6-5. Prepare the trailer as shown in Figures 6-12 and 6-13. Remove the tarpaulin, bows, and side racks
according to TM 9-2330-202-14&P.
2
1
1 Secure the safety chains and intervehicular cable to the drawbar frame with type III nylon
cord or tape.
2 Secure the hand brake in the OFF position with two lengths of type III nylon cord.
Figure 6-12. Front of Trailer Prepared
6-14
FM 4-20.105-1/TO 13C7-1-51 VOL I
29 August 2006
Rigging M101A1 or M101A2, ¾-Ton Cargo Trailer with Accompanying Load on Dual Row Airdrop System
Platform
1
2
3
1
Stack two pieces of 2- by 12- by 46-inch lumber between the leaf springs and the frame.
Secure them with type III nylon cord. Be sure to clear the shackle bolts.
2
Pad axles with cellulose wadding.
3 Pad the front and rear spring mounted shackle with cellulose wadding.
Figure 6-13. Rear of Trailer Prepared
29 August 2006
FM 4-20.105-1/TO 13C7-1-51 VOL I
6-15
Chapter 6
STOWING ACCOMPANYING LOAD AND TRAILER COMPONENTS
IN TRAILER
6-6. Stow the accompanying load of 14 ammunition boxes in the trailer as shown in Figures 6-14 and 6
15. Stow the trailer components as shown in Figure 6-16.
Note. The accompanying load may vary from the one shown. Ensure the load is properly
secured and weight does not exceed 1,500 pounds.
Notes. 1. All measurements are given in inches.
2. This drawing is not drawn to scale.
2
3
1
37
2
3
15 ½
1 ½
3
2
1
Center two 36- by 94-inch pieces of honeycomb in the trailer bed.
2
Form six 30-foot lashings according to Chapter 2. Place two 30-foot lashings on top of the
honeycomb from front to rear crossing at the center.
3
Place two 30-foot lashings on top of the honeycomb from front to rear 22 inches apart.
4 Cut one endboard as shown above using one ¾- by 15 ½- by 37-inch piece of plywood.
Figure 6-14. Honeycomb, Lashings and Endboards Positioned in the Trailer
6-16
FM 4-20.105-1/TO 13C7-1-51 VOL I
29 August 2006
Rigging M101A1 or M101A2, ¾-Ton Cargo Trailer with Accompanying Load on Dual Row Airdrop System
Platform
6
5
7
8
9
10
5
Place the endboard in the front of the trailer on top of the honeycomb. Place two 30-foot
lashings on the back of the endboard, and tape the lashings in place.
6
Place the endboard against the front of the trailer bed. Cut and position one 15- by 36-inch
piece of honeycomb against the endboard.
7
Place one 15-foot lashing on the top of the honeycomb from left to right 21 inches from the
front of the trailer.
8
Place one 15-foot lashing on the top of the honeycomb from left to right 34 inches from the
front of the trailer.
9
Place one 15-foot lashing on the top of the honeycomb from left to right 58 inches from the
front of the trailer.
10 Place one 15-foot lashing on the top of the honeycomb from left to right 70 inches from the
front of the trailer.
Figure 6-14. Honeycomb, Lashings and Endboards Positioned in the Trailer (Continued)
29 August 2006
FM 4-20.105-1/TO 13C7-1-51 VOL I
6-17
Chapter 6
1
3
2
4
1 Place 14 ammunition boxes in two layers of seven each on top of the honeycomb. Place
them flush against the piece of honeycomb.
2 Secure the boxes in place with the two pre-positioned lashings running front to rear.
3 Secure the boxes in place with the four pre-positioned lashings running left to right.
Note. The lashings may need to be adjusted slightly after the ammunition boxes are set in place.
4 Form a 30-foot lashing according to Chapter 2 of this manual. Run the lashing across the
rear bottom box. Pass each free end through the carrying handle of the rear bottom box
and between the rear lashing (shown in step 10, Figure 6-14) and boxes. Run each free
end over the side panel of the trailer, in front of the wheel well.
Figure 6-15. Ammunition Boxes Lashed and Secured in the Trailer
6-18
FM 4-20.105-1/TO 13C7-1-51 VOL I
29 August 2006
Rigging M101A1 or M101A2, ¾-Ton Cargo Trailer with Accompanying Load on Dual Row Airdrop System
Platform
FRONT
5
6
7
5
Secure the lashing in front of the second cross member of the trailer with two D-rings and a
load binder.
6
Place one 15- by 36-inch piece of honeycomb flush against the rear ammunition boxes.
7 Place one ¾- by 15- by 36-inch piece of plywood flush against the honeycomb.
Figure 6-15. Ammunition Boxes Lashed and Secured in the Trailer (Continued)
29 August 2006
FM 4-20.105-1/TO 13C7-1-51 VOL I
6-19
Chapter 6
9
11
10
12
8
8
12
8 Pass the free end of each pre-positioned lashing (on the rear of the trailer) between the
tailgate and the cargo bed. Pass the ends around the padded rear spring mounted shackle,
and back up to the top of the load.
9 Secure the left rear lashing to the right front lashing with a D-ring and a load binder.
10 Secure the right lashing to the left front lashing with a D-ring and a load binder.
11 Pass the free ends of the upper pre-positioned 30-foot lashing (attached to the front
endboard) around rear endboard and load bind with a D-ring and a load binder.
12 Pass the free end of the lower pre-positioned 30-foot lashing (attached to the front endboard)
between the tailgate and the cargo bed. Run each lashing to the outside of the mainframe,
between the mainframe and under the cargo bed. Secure the lashings together with D-rings
and load binders.
Note. Pad sharp areas that touch lashings to avoid metal-to-metal contact.
Figure 6-15. Ammunition Boxes Lashed and Secured in the Trailer (Continued)
6-20
FM 4-20.105-1/TO 13C7-1-51 VOL I
29 August 2006
Rigging M101A1 or M101A2, ¾-Ton Cargo Trailer with Accompanying Load on Dual Row Airdrop System
Platform
6
2
1
5
3
5
1
Tie the bows together with type III nylon cord, and place them inside the trailer on the right
side.
2
Tie the bows with type III nylon cord to the lashings which run from left to right across the
top of the ammunition boxes.
3
Tie the side racks together with type III nylon cord, and place them on top of the
ammunition boxes.
4
Tie the side racks with type III nylon cord to the lashings which run from left to right across
the top of the ammunition boxes (not shown).
5
Close the tailgate, and tie the latches with type III nylon cord.
6 Lay tarpaulin across side rails and secure with type III nylon cord.
Figure 6-16. Trailer Components Stowed
29 August 2006
FM 4-20.105-1/TO 13C7-1-51 VOL I
6-21
Chapter 6
8
7
7 Place two 36- by 96-inch pieces of honeycomb on top of the tarpaulin. Tape the edges of the
honeycomb where the lashings will touch.
8 Form two 30-foot lashings according to Figure 2-14. Position one lashing 32 inches from rear
of trailer bed and second lashing 69 inches from the rear of trailer bed. Secure the load and
trailer components by passing each lashing around the trailer body and frame. Position the
load binders off the honeycomb and secure them.
Figure 6-16. Trailer Components Stowed (Continued)
6-22
FM 4-20.105-1/TO 13C7-1-51 VOL I
29 August 2006
Rigging M101A1 or M101A2, ¾-Ton Cargo Trailer with Accompanying Load on Dual Row Airdrop System
Platform
SECURING TRAILER SUPPORT STAND AND INSTALLING LIFTING
SLINGS
6-7. Raise and secure the trailer support stand as shown in Figure 6-17. Use three 12-foot (2-loop), type
XXVI nylon webbing slings; one 3-foot (2-loop), type XXVI nylon webbing sling; and three medium
suspension clevises to lift the trailer.
1
1
Raise the support stand, and tie it with ½-inch tubular nylon webbing.
2
Place the bell portion of each clevis in the end loop of each 12-foot sling (not shown).
3
Attach the two rear lifting slings to the tie-down provisions on the rear of the trailer (not
shown).
4 Pass a 3-foot sling through the lunette on the trailer. Attach the 3-foot sling to the medium
suspension clevis (not shown).
Figure 6-17. Trailer Support Stand Raised and Secured
29 August 2006
FM 4-20.105-1/TO 13C7-1-51 VOL I
6-23
Chapter 6
POSITIONING TRAILER
6-8. Position the trailer on the honeycomb stacks according to Figure 6-18.
REAR
3
FRONT
1
2
1
Position the drawbar on stack 1.
2
Position the axle on stack 2.
3 Position the frame support board on stack 3.
Figure 6-18. Trailer Positioned
6-24
FM 4-20.105-1/TO 13C7-1-51 VOL I
29 August 2006
Rigging M101A1 or M101A2, ¾-Ton Cargo Trailer with Accompanying Load on Dual Row Airdrop System
Platform
LASHING TRAILER
6-9. Lash the trailer to the platform according to Chapter 2 of this manual and as shown Figures 6-19 and
6-20.
3
5
1
REAR
7
FRONT
10
9
5
1
Lashing
Tiedown
Instructions
Number
Clevis
Number
Pass lashing:
1
1
Through the lunette.
2
1A
Through the lunette.
3
5
Through the right front lifting shackle.
4
5A
Through the left front lifting shackle.
5
9
Around the right side of the axle.
6
9A
Around the left side of the axle.
7
10
Through the right rear lifting shackle using a 30-foot lashing.
8
10A
Through the left rear lifting shackle using a 30-foot lashing.
Figure 6-19. Lashings 1 Through 8 Installed
29 August 2006
FM 4-20.105-1/TO 13C7-1-51 VOL I
6-25
Chapter 6
9
REAR
FRONT
13
21
14
11
11
Lashing
Tiedown
Instructions
Number
Clevis
Number
Pass lashing:
9
11
Through the right front lifting shackle.
10
11A
Through the left front lifting shackle.
11
14
Around the right side of axle.
12
14A
Around the left side of axle.
13
21
Through the right rear lifting shackle.
14
21A
Through the left rear lifting shackle.
Figure 6-20. Lashings 9 Through 14 Installed
6-26
FM 4-20.105-1/TO 13C7-1-51 VOL I
29 August 2006
Rigging M101A1 or M101A2, ¾-Ton Cargo Trailer with Accompanying Load on Dual Row Airdrop System
Platform
BUILDING AND INSTALLING PARACHUTE STOWAGE PLATFORM
6-10. Build the parachute stowage platform as shown in Figure 6-21. Install the parachute stowage
platform using four 15-foot tie-down assemblies as shown in Figure 6-22.
Notes. 1. All measurements are given in inches.
2. This drawing is not drawn to scale.
3
2-inch Diameter Holes
3
2 X 6 X 40
2 X 6 X 34
2 X 4 X 40
2 X 4 X 29
25
on edge
26 ½
17 ½
2 X 6 X 29
8 ½
2 X 6 X 40
FRONT
Step:
1. Cut a ¾- by 40- by 50-inch piece of plywood.
2. Nail a 2- by 6- by 40-inch piece of lumber 5 inches from the front edge of the plywood. Nail
a second 2- by 6- by 40-inch piece of lumber flush with the rear edge of the plywood.
3. Nail a 2- by 6- by 34-inch piece of lumber to each side of the plywood as shown.
4. Nail a 2- by 6- by 29-inch piece of lumber on top of the 2- by 6- by 40-inch lumber
that is positioned on the front of the plywood.
5. Nail a 2- by 4- by 29-inch piece of lumber standing on edge 17 ½ inches from the front
edge of the plywood.
6. Nail a 2- by 4- by 40-inch piece of lumber 26 ½ inches from the front edge of the plywood.
7. Drill six 2-inch holes in the lumber as shown.
Figure 6-21. Parachute Stowage Platform Built
29 August 2006
FM 4-20.105-1/TO 13C7-1-51 VOL I
6-27
Chapter 6
2
1
3
4
REAR
FRONT
7
3
1 Place two 36- by 15-inch pieces of honeycomb on the rear of the drawbar frame.
2 Place the parachute stowage platform on top of the honeycomb with the smooth side of
plywood facing up.
3 Run a 15-foot lashing through clevis 7 up through right rear hole of stowage platform and
down through center hole to D-ring. Secure with D-ring and a load binder. Repeat for
clevis 7A.
4 Run a 15-foot lashing through clevis 3 up through center right hole of stowage platform
and down through right front hole of stowage platform to D-ring. Secure with D-ring and a
load binder. Repeat for clevis 3A.
Figure 6-22. Parachute Stowage Platform Installed
6-28
FM 4-20.105-1/TO 13C7-1-51 VOL I
29 August 2006
Rigging M101A1 or M101A2, ¾-Ton Cargo Trailer with Accompanying Load on Dual Row Airdrop System
Platform
BUILDING AND POSITIONING ATTITUDE CONTROL SYSTEM
(ACS) STACKS
6-11. Build the ACS stacks as shown in Figure 6-23. Position the ACS stacks as shown in Figure 6-24.
Notes. 1. All measurements are given in inches.
2. This drawing is not drawn to scale.
ONE PIECE
¾ X 12 X 24
PLYWOOD
FIVE PIECES
ONE PIECE
12 X 24
¾ X 12 X 24
1
HONEYCOMB
PLYWOOD
SEVEN PIECES
12 X 12
HONEYCOMB
2
TWELVE PIECES
12 X 24
HONEYCOMB
1 Build two right side ACS stacks as shown in diagram.
2 Build two left side ACS stacks as shown in diagram.
Figure 6-23. ACS Stacks Built
29 August 2006
FM 4-20.105-1/TO 13C7-1-51 VOL I
6-29
Chapter 6
3
3
1
1
REAR
FRONT
1
Position right side stacks in the floor of right side of the trailer bed as shown.
2
Position left side stacks in the floor of left side of the trailer bed (not shown).
Note. Ensure stacks are solid and level.
3 Secure stacks with type III nylon cord.
Figure 6-24. ACS Stacks Positioned
6-30
FM 4-20.105-1/TO 13C7-1-51 VOL I
29 August 2006
Rigging M101A1 or M101A2, ¾-Ton Cargo Trailer with Accompanying Load on Dual Row Airdrop System
Platform
INSTALLING SUSPENSION SLINGS AND ATTITUDE CONTROL
SYSTEM (ACS)
6-12. Construct, inspect, and position the ACS according to Chapter 2 of this manual and as shown in
Figure 6-25. Install the suspension slings and secure ACS according to Chapter 2, and as shown in Figure
6-26.
2
1
REAR
FRONT
1 Position the front ACS centered on the front ACS stacks. The ACS 4- by 4-inch lumber must
face the rear of the platform.
2 Position the rear ACS centered on the rear ACS stacks. The ACS 4- by 4-inch lumber must
face the front of the platform.
Figure 6-25. ACS Positioned
29 August 2006
FM 4-20.105-1/TO 13C7-1-51 VOL I
6-31
Chapter 6
2
3
1
REAR
FRONT
8
6
1 Install a 3-foot (4-loop), type XXVI nylon sling to clevises 6 and 8. Connect an 11-foot (4
loop), type XXVI nylon sling to the center of the 3-foot sling with a 3 ¾-inch two-point link.
2 Route the sling through the clevis on the ACS from front to rear. Pad and tape the 11-foot
sling with felt from a point 6 inches below the clevis to a point 6 inches above the top of the
ACS.
3 Safety tie the 3 ¾-inch two-point link to the ACS clevis with a loop of type III nylon cord.
Ensure the tie is tight.
4 Install a 3-foot (4-loop), type XXVI nylon sling to the other end of the 11-foot sling with a 3
¾-inch two-point link. Pad and tape the link with felt (not shown).
5 Repeat steps 1 through 4 on the left side of the load using clevises 6A and 8A.
Figure 6-26. Slings Installed and ACS Secured
6-32
FM 4-20.105-1/TO 13C7-1-51 VOL I
29 August 2006
Rigging M101A1 or M101A2, ¾-Ton Cargo Trailer with Accompanying Load on Dual Row Airdrop System
Platform
8
7
6
REAR
FRONT
13
4
2
6 Route a 30-foot lashing from clevis 4 through right front ACS clevis from outside to inside,
rear to front and around the ACS 4- by 4-inch lumber and back to clevis 4.
7 Repeat above step using clevis 2.
8 Route a 30-foot lashing from clevis 13 through right front ACS clevis from outside to inside,
front to rear and around the ACS 4- by 4-inch lumber and back to clevis 13.
9 Repeat steps 6 through 8 on the left side of load using clevises 2A, 4A, and 13A (not shown).
10 Ensure that the ACS is straight and centered on the load. Load binders on both sides of the
load must be closed at the same time in the following sequence: 4 and 4A, 2 and 2A, 13 and
13A.
Figure 6-26. Slings Installed and ACS Secured (Continued)
29 August 2006
FM 4-20.105-1/TO 13C7-1-51 VOL I
6-33
Chapter 6
13
12
11
REAR
FRONT
23
19
11 Install a 3-foot (4-loop), type XXVI nylon sling to clevises 19 and 23. Connect an 11-foot (4
loop), type XXVI nylon sling to the center of the 3-foot sling with a 3 ¾-inch two-point link.
12 Route the sling through the clevis on the ACS from rear to front. Pad and tape the 11-foot
sling with felt from a point 6 inches below the clevis to a point 6 inches above the top of the
ACS.
13 Safety tie the 3 ¾-inch two-point link to the ACS clevis with a loop of type III nylon cord.
Ensure the tie is tight.
14 Install a 3-foot (4-loop), type XXVI nylon sling to the other end of the 11-foot sling with a 3 ¾
inch two-point link. Pad and tape the link with felt (not shown).
15 Repeat steps 11 through 14 on the left side of the load using clevises 19A and 23A.
Figure 6-26. Slings Installed and ACS Secured (Continued)
6-34
FM 4-20.105-1/TO 13C7-1-51 VOL I
29 August 2006

 

 

 

 

 

 

 

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