TM-9-2350-277-20-1 Unit Maintenance Manual Volume 1 M113A3 M577A3 M1064A3 M1068A3 M58 Download
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TM 9-2350-277-20-1 SMOKE GRENADE LAUNCHER(S) MALFUNCTION (M113A3 AND M1059A3 ONLY) 0045 00 INITIAL SETUP: M a i n t e n a n c e L e v e l Unit T o o l s a n d S p e c i a l T o o l s General Mechanic’s Tool Kit (WP 0926 00, Item 65) Multimeter (WP 0926 00, Item 30) Jumper wire P e r s o n n e l R e q u i r e d Unit Mechanic Helper (H) R e f e r e n c e s See your -10 E q u i p m e n t C o n d i t i o n Engine stopped (see your -10) Carrier blocked (see your -10) Trim vane lowered (see your -10) Power plant access door open (see your -10) Harness 12313235 removed from launcher arming/firing unit (WP 0366 00) T 1. Does either launcher operate properly? YES NO GO TO BY (PAGE 0045 00-3) Y 1. Remove harness 12313237 launcher plug (1) from failing right launcher. 2. Remove harness 12313237 circuit 7 (2) and 799 plugs (3) from harness 12313236 (right launcher) or harness 12313235 (left launcher) jacks (4). 3. Measure resistance between harness 12313237 launcher plug (1) pin A (5) and plug 7 (3) circuit. 4. Measure resistance between harness 12313237 launcher plug (1) pin C (6) and circuit 7 plug (2). 5. Does multimeter read 0 ohms for both measurements? YES NO YN 1. Replace harness 12313237 for left or right grenade launcher (WP 0366 00). 2. Verify no faults found. 0045 00-1 Change 2