TM-9-2350-277-34 Direct and General Maintenance Manual M113A3 M577A3 M1064A3 M1068A3 M58 Download
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TM 9-2350-277-34 VEHICLE BATTERIES DISCHARGE WITH EXTERNAL AC POWER APPLIED (M1068A3 ONLY)—Continued 0007 00 4Y 1. Disconnect Special Purpose Power Cable (1) from external AC power and from J24 (2) on Power Control Enclosure. 2. Install all circuits (3) on power supplies PS1 (4) and PS2 (5). 3. Remove 10 screws (6) and lockwashers (7) and lower faceplate (8) of Power Control Enclosure. Discard lockwashers. 4. Undo velcro strap (9) securing safety cover (10) over the inside of the faceplate (8). Open safety cover (10). 5. Measure resistance between PS1 (+) OUTPUT terminal (11) and DC bus bar at terminal 1 (12) of circuit breaker CB15 (13). 6. Does multimeter read 0 ohms? YES NO 4YN 1. Replace circuit 31E (WP 0090 00) and See your -20. 2. Verify no faults found. 0007 00-5