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Tools and Special Tools Small Arms Repairman Tool Kit (item 2, appx B) |
Cotter pin (2) (MS24665-132) Self-locking nut (2) (MS51922-29) |
14-1 M66 machine gun mount ring removed |
DISASSEMBLY
1 Remove two cotter pins (1), two headed straight pins (2), and cushioning pad (3) from ring assembly (4). Discard cotter pins.
2 Remove two setscrews (5), flexible wire (6), and cartridge deflector (7).
3 Remove two self-locking nuts (8), two flat washers (9), two hexagon capscrews (10), and deflector support (11) from ring assembly (4). Discard self-locking nuts. 
8-1. M66 MACHINE GUN MOUNT RING—MAINTENANCE INSTRUCTIONS (cont) INSPECTION/REPAIR
1 Inspect for broken, damaged, or missing parts.
2 Ring assembly is a repairable assembly. Notify direct support maintenance.
3 Repair is by replacement of authorized parts (appx C). REASSEMBLY
1 Position deflector support (1) on ring assembly (2) and secure with two hexagon capscrews (3), two flat washers (4), and two new self-locking nuts (5).
2 Install flexible wire (6), cartridge deflector (7), and two setscrews (8).
3 Position cushioning pad (9) on ring assembly (2), and secure with two headed straight pins (10) and two new cotter pins (11). 
- 8-2. RING ASSEMBLY AND RING—MAINTENANCE INSTRUCTIONS
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THIS TASK COVERS: |
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a. Disassembly b. Inspection/Repair |
c. Reassembly |
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INITIAL SETUP |
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Tools and Special Tools
Small Arms Repairman Tool Kit (item 2, appx B) |
8-1 M66 machine gun mount ring disassembled |
1 Remove pintle lock cap (1), two S chain hooks (2), and weldless chain (3) from upper revolving ring (4).
2 Remove sleeve bushing (5) from upper revolving ring (4).
3 If damaged, remove two cotter pins (6) from pintle lock handle (7) and cotter pin (8) from headless shoulder pin (9).
INSPECTION/REPAIR
1 Inspect for broken, damaged, or missing parts.
2 Repair is by replacement of authorized parts (appx C).
REASSEMBLY
1 If removed, install cotter pin (8) in headless shoulder pin (9) and two cotter pins (6) in pintle lock handle (7).
2 Install sleeve bushing (5) in upper revolving ring (4).
3 Install weldless chain (3), two S chain hooks (2), and pintle lock cap (1) on upper revolving ring (4). 
- 8-3. RING BRAKE—MAINTENANCE INSTRUCTIONS
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THIS TASK COVERS:
a. Disassembly b. Inspection/Repair |
c. Reassembly |
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INITIAL SETUP |
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Tools and Special Tools |
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Small Arms Repairman Tool Kit (item 2, appx B) |
DISASSEMBLY
1 Remove socket head capscrew (1) and manual control lever (2).
2 If damaged, remove two cotter pins (3) from headless straight pin (4).
INSPECTION/REPAIR
1 Inspect for broken, damaged, or missing parts.
2 Repair is by replacement of authorized parts (appx C).
REASSEMBLY
1 If removed, install two cotter pins (3) in headless straight pin (4).
2 Install manual control lever (2) and secure with socket head capscrew (1).  
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