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 LEFT REAR UTILITY OUTLET/BLOWER DOES NOT WORK (M577A3 AND M1068A3 ONLY)—Continued 0043 00 3Y 1. Turn MASTER SWITCH to OFF. 2. Remove eight nuts (1), washers (2), and screws (3) from master switch panel (4) and distribution box (5). Pull panel away from distribution box. 3. Remove circuit 37B plug (6) from circuit breaker jack (7). 4. Turn MASTER SWITCH to ON. 5. Measure voltage between circuit breaker jack (7) and ground. 6. Does multimeter read less than 17 volts? YES NO 3YN 1. Turn MASTER SWITCH to OFF. 2. Faulty rear main wiring harness circuit 37B. Beyond unit maintenance repair. 3. Notify supervisor. 4Y 1. Remove circuit 10 plug (1) from circuit breaker jack (2). 2. Measure voltage between circuit 10 plug (1) and ground. 3. Does multimeter read less than 17 volts? YES NO 4YN 1. Turn MASTER SWITCH to OFF. 2. Replace circuit breaker (WP 0280 00). 3. Verify no faults found. 0043 00-2