UNIT MAINTENANCE FOR
M122 MACHINE GUN TRIPOD NSN 1005-00-710-5599, P/N 7790723 AND M122A1 MACHINE GUN TRIPOD, NSN 1005-00-433-1617, P/N 12976948
INITIAL SETUP
This task covers: a. Inspection/Repair b. Cleaning c. Refinishing d. Lubrication Tools and Special Tools:
Tool Kit, Small Arms Repairman, PN SC 5180-95-B71
Materials/Parts:
Cleaner, Lubricant and Preservative, (CLP), (item 3, WP 0179 00)
Materials/Parts (cont):
Lubricant, Solid Film, (item 10, WP 0179 00) Rag, Wiping, (item 14, WP 0179 00)
Solvent, Cleaning, (item 17, WP 0179 00) Equipment Condition:
Mount components separated.
INSPECTION/REPAIR
Inspect for broken, damaged, or missing parts.
Tripod leg assembly (1) is repairable, refer to WP 0015 00.
Traversing and elevating mechanism (2) is a reparable assembly, refer to WP 0016 00.
Pintle mount (3) is a repairable assembly, refer to WP 0017 00/WP 0018 00.
Adapter assembly (4) (M122A1 only) is a repairable assembly, refer to WP 0019 00.
2
1
2NL0010
3 3
4
0014 00-1
UNIT MAINTENANCE FOR
M122 MACHINE GUN TRIPOD MOUNT, NSN 1005-00-710-5599, P/N 7790723 AND M122A1 MACHINE GUN TRIPOD MOUNT, NSN 1005-00-433-1617, P/N 12976948 (cont)
CLEANING
Clean tripod components with CLP, wipe dry, and apply light coat of CLP.
REFINISHING
NOTE
Deploying or combat units may touch-up no more than one third of the tripod with SFL. If more than one third of the surface needs touch-up turn the tripod in for replacement (free issue). All other units may touch-up the entire tripod.
Refinish any shiny spots on tripod leg assembly. Clean the surface with cleaning solvent. Apply solid film lubricant in accordance with manufacturers instructions, and allow SFL to dry. Apply light coat of CLP.
LUBRICATION
Apply light coal of CLP to all surfaces.
END OF WORK PACKAGE 0014 00-2
UNIT MAINTENANCE FOR
TRIPOD LEG ASSEMBLY, NSNA, P/N 7790948
INITIAL SETUP
This task covers: a. Disassembly b. Inspection/Repair c. Cleaning d. Refinishing/Lubrication e. Assembly
Tools and Special Tools:
Tool Kit, Small Arms Repairman, PN SC 5180-95-B71
Materials/Parts:
Cleaner, Lubricant and Preservative, (CLP), (item 3, WP 0179 00)
Lock-washer (2), P/N MS 35333-40
Materials/Parts (cont):
Lubricant, Solid Film, (item 10, WP 0179 00) Rag, Wiping, (item 14, WP 0179 00)
Solvent, Cleaning, (item 17, WP 0179 00) Equipment Condition:
Tripod legs extended and locked; pintle and T&E mechanism removed.
DISASSEMBLY
NOTE Remove pintle lock assembly only if repair is required.
Make sure pintle lock assembly is in the locked position before removing.
Remove two machine screws (1), two lock-washers (2), and pintle lock assembly (3) from head (4).
Discard two lock-washers.
Remove hex plain nut (5), machine bolt (6), and tripod mount leg (7) from head (4).
2NL0011
UNIT MAINTENANCE FOR
TRIPOD LEG ASSEMBLY, NSNA, P/N 7790948 (cont)
INSPECTION/REPAIR
NOTE
Tripod is a Class VII item, replaceable to unit at no cost.
Inspect for broken, damaged, or missing parts.
Pintle lock assembly (3) is a repairable assembly. Notify direct support maintenance.
If head (4) is cracked or damaged, repair is by replacement of the next higher assembly.
Repair is by replacement of authorized parts.
CLEANING
Clean all components with CLP, wipe dry and apply light coat of CLP.
REFINISHING/LUBRICATION
Clean area to be refinished with cleaning solvent, wipe dry, and touch-up with SFL. Allow to dry per manufacturer’s instructions. Apply light coat of CPL.
REASSEMBLY
Install tripod mount leg (7) and secure to head (4) with machine bolt (6) and hex plain nut (5).
NOTE
Adjust hex plain nuts for 0.003 in. (0.008 cm) maximum clearance between head and legs. Legs must pivot freely.
HINT: One sheet of tablet paper is approximately .003 thick. Tighten nut, with paper between the leg (9) and nut, until the paper can be pulled out but a drag is felt.
Stake plain hex nut (5) to machine bolt (6) in three places.
2NL0011
END OF WORK PACKAGE 0015 00-2
UNIT MAINTENANCE FOR TRAVERSING AND ELEVATING MECHANISM (TRAVERSING AND CLAMPING UNIT), NSNA, P/N 7791119
This task covers: a. Disassembly b. Inspection/Repair c. Cleaning d. Refinishing/Lubrication e. Assembly
INITIAL SETUP
Tools and Special Tools:
Tool Kit, Small Arms Repairman, PN SC 5180-95-B71
Materials/Parts:
Cleaner, Lubricant and Preservative, (CLP), (item 3, WP 0179 00)
Lock-washer, P/N 11010413
Materials/Parts (cont):
Lubricant, Solid Film, (item 10, WP 0179 00) Rag, Wiping, (item 14, WP 0179 00)
Solvent, Cleaning, (item 17, WP 0179 00) Equipment Condition:
Traversing and elevating mechanism removed from tripod.
DISASSEMBLY
NOTE
Retaining rings (1) and headless grooved pin (2) are not components of the T&E.
Replacement parts must be ordered separately.
Remove two retaining rings (1) from grooved pin (2).
Remove headless grooved pin (2) by sliding out of yoke (3).
WARNING
To avoid injury to eyes, use care when removing/installing spring loaded parts.
Remove machine screw (4) and lock-washer (5) from traversing lever (6). Discard lock-washer. Remove traversing lever (6), helical torsion spring (7) and machine screw (8) from elevating mechanism sleeve (9).
Further disassembly of traversing and elevating mechanism is not authorized.
1
UNIT MAINTENANCE FOR TRAVERSING AND ELEVATING MECHANISM (TRAVERSING AND CLAMPING UNIT), NSNA, P/N 7791119 (cont)
INSPECTION /REPAIR
Inspect for broken, damaged, or missing parts.
If T&E will not elevate and/or traverse notify direct support maintenance.
Repair is by replacement of authorized parts.
CLEANING
NOTE
Assembly may be immersed for cleaning.
Clean all parts with cleaning solvent. Allow solvent to drain from crevices, wipe dry, and apply light coat of CLP.
REFINISHING/LUBRICATION
NOTE
Do not apply SFL to screw threads or internal parts.
Clean area to be refinished with cleaning solvent, wipe dry, and touch-up with SFL. Allow SFL to dry per manufacturer’s instructions. Apply light coat of CLP.
ASSEMBLY
NOTE
Machine screw (8) will need to be adjusted when traversing lever (6) is installed.
Traversing lever (6) must be aligned with traverse bar assembly.
Insert machine screw (8) into hole of elevating screw assembly (9). Place the T&E assembly on the tripod traverse bar and tighten the machine screw (8). Assembly should remain upright without support.
1
Place end of spring (7) into hole in backside of traversing lever (6); ensure opposite leg of spring is horizontal and pointing left. Install helical torsion spring (7) and traversing lever (6) (pointed to the right), new lock-washer (5) and machine screw (4). Tighten machine screw (4). Function test. When lever is disengaged T&E should slip off the traversing bar.
Insert grooved pin (2) into yoke (3) and install retaining rings (1) to grooved pin (2).
END OF WORK PACKAGE 0016 00-3/4 blank
UNIT MAINTENANCE FOR
PINTLE MOUNT, NSN 1005-00-945-9756, P/N 11010408
This task covers: a. Disassembly b. Inspection/Repair c. Cleaning d. Refinishing/Lubrication e. Assembly
INITIAL SETUP
Tools and Special Tools:
Tool Kit, Small Arms Repairman, PN SC 5180-95-B71
Materials/Parts:
Cleaner, Lubricant and Preservative, (CLP), (item 3, WP 0179 00)
Lubricant, Solid Film, (item 10, WP 0179 00)
Materials/Parts (cont):
Rag, Wiping, (item 14, WP 0179 00) Solvent, Cleaning, (item 17, WP 0179 00) Personnel Required
2
Equipment Condition:
Mount pintle removed from tripod.
DISASSEMBLY
WARNING
To avoid injury to your eyes, use care when removing and installing spring-loaded parts.
Secure pintle in vise or tripod head, tap out and remove headless grooved pin (1), lock-release lever (2), and helical torsion spring (3) from pintle (4).
1
Inspect for broken, damaged, or missing parts.
If pintle (4) is broken or damaged, repair is by replacement of next higher assembly.
Repair is by replacement of authorized parts.
0017 00-1
UNIT MAINTENANCE FOR
MOUNT PINTLE, NSN 1005-00-945-9756, P/N 11010408 (cont)
CLEANING
Clean all components with CLP; wipe dry and apply light coat of CLP.
REFINISHING/LUBRICATION
Clean area to be refinished with cleaning solvent, wipe dry, and touch-up with SFL. Allow to dry per manufacturer’s instructions. Apply light coat of CPL.
ASSEMBLY
NOTE
Have helper assist in assembly.
Secure pintle (4) in vise or tripod head. Align helical torsion spring (3) and lock-release lever (2) to pintle (4), secure with headless grooved pin (1).
1
2 3
4
2NL0013
END OF WORK PACKAGE 0017 00-2
UNIT MAINTENANCE FOR
PINTLE, NSN 1005-01-461-2656, P/N 12986102
This task covers: a. Disassembly b. Inspection/Repair c. Cleaning d. Refinishing/Lubrication e. Assembly
INITIAL SETUP
Tools and Special Tools:
Tool Kit, Small Arms Repairman, PN SC 5180-95-B71
Materials/Parts:
Cleaner, Lubricant and Preservative, (CLP), (item 3, WP 0179 00)
Materials/Parts (cont):
Lubricant, Solid Film, (item 10, WP 0179 00) Rag, Wiping, (item 14, WP 0179 00)
Solvent, Cleaning, (item 17, WP 0179 00) Equipment Condition:
Mount pintle removed from tripod.
DISASSEMBLY
Loosen and remove cap screw (1), cable assembly (2), and quick release pin (3) from pintle (4). Pry up one leg of split ring and rotate over cable assembly until loose.
2NL0014
Inspect for cracked, broken, damaged, or missing parts.
If pintle (4) is broken or damaged, repair is by replacement of next higher assembly.
Repair is by replacement of authorized parts.
CLEANING
Clean all metal components with CLP, wipe dry and apply light coat of CLP.
0018 00-1
UNIT MAINTENANCE FOR
PINTLE, NSN 1005-01-461-2656, P/N 12986102 (cont)
REFINISHING/LUBRICATION
Clean area to be refinished with cleaning solvent, wipe dry, and touch-up with SFL. Allow to dry per manufacturer’s instructions. Apply light coat of CPL.
ASSEMBLY
Insert cap screw (1) through bracket on cable assembly (2), and attach to pintle (4). Looped end of cable assembly should be attached to the ring on quick release pin (3). Insert quick release pin (3) into pintle (4).
2NL0014
1
2 3
4
END OF WORK PACKAGE 0018 00-2
UNIT MAINTENANCE OF
ADAPTER ASSEMBLY, FORK, NSNA, P/N 12990570; AND FORK ASSEMBLY, 1055-01-225-1156, P/N 9378233
This task covers: a. Disassembly b. Inspection/Repair c. Cleaning d. Refinishing/Lubrication e. Assembly
INITIAL SETUP
Tools and Special Tools:
Tool Kit, Small Arms Repairman, PN SC 5180-95-B71
Materials/Parts:
Cleaner, Lubricant and Preservative, (CLP), (item 3, WP 0179 00)
Materials/Parts (cont):
Lubricant, Solid Film, (item 10, WP 0179 00) Rag, Wiping, (item 14, WP 0179 00)
Solvent, Cleaning, (item 17, WP 0179 00) Equipment Condition:
Fork assembly removed from T&E.
NOTE
Fork assembly (P/N 12990570) is AAL to the M122 machine gun tripod. Maintenance procedures are the same.
DISASSEMBLY
Remove clip (1), and pull quick release pin (2) from fork (3).
Loosen and remove cap screw (4), flat washer (5), and deflector (6).
2 3
Inspect for cracked, broken, damaged, or missing parts.
If fork assembly (3) is broken or damaged, repair is by replacement of next higher assembly.
Repair is by replacement of authorized parts.
0019 00-1
UNIT MAINTENANCE OF
ADAPTER ASSEMBLY, FORK, NSNA, P/N 12990570; AND FORK ASSEMBLY, 1055-01-225-1156, P/N 9378233 (cont)
CLEANING
Clean all components with CLP, wipe dry and apply light coat of CLP.
REFINISHING/LUBRICATION
Clean area to be refinished with cleaning solvent, wipe dry, and touch-up with SFL. Allow to dry per manufacturer’s instructions. Apply light coat of CPL.
REASSEMBLY
Align deflector (6) with hole in fork assembly (4) and install flat washer (5), and cap screw (4).
Install quick release pin (2) through holes in fork (3) and insert clip (1).
2 3
4 5
2NL0015
1
6
END OF WORK PACKAGE 0019 00-2