TM-9-2350-277-20-1 Unit Maintenance Manual Volume 1 M113A3 M577A3 M1064A3 M1068A3 M58 Download
Page 258 of 858
TM 9-2350-277-20-1 SMOKE GRENADE LAUNCHER(S) MALFUNCTION (M113A3 AND M1059A3 ONLY)—Continued 0045 00 2Y 1. Install jumper wire between harness 12313236 (right launcher) or harness 12313235 (left launcher) and circuit 7 (1) or 799 jacks (2). 2. Remove smoke grenade wiring harness from arming/firing unit. 3. Measure resistance between harness 12313235 arming/firing unit plug (3) pins C (4) and D (5) (left launcher check) or pins E (6) and F (7) (right launcher check). 4. Does multimeter read more than 0 ohms for both measurements? YES NO 2YN 1. Smoke grenade wiring harness is OK. Faulty launcher or arming firing unit. Beyond unit maintenance repair. 2. Notify supervisor. 3Y 1. Is failing launcher on right side of carrier? YES NO 3YN 1. Smoke grenade wiring harness is OK. Faulty launcher or arming/firing unit. Beyond unit maintenance repair. 2. Notify supervisor. 4Y 1. Remove harness 12313236 plug (1) from harness 12313235 jack (2) at vehicle bulkhead. 2. Measure resistance between harness 12313236 plug (1) pins A (3) and B (4). 3. Does multimeter read continuity? YES NO 4YN 1. Replace harness 12313236 (WP 0366 00). 2. Verify no faults found. 0045 00-2 Change 2