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 ENGINE OVERCOOLS—Continued 0015 00 Y 1. Stop engine (see your -10). 2. Disengage thermostatic fan speed switch (see your -10) 3. Manually rotate fan drive belt (1). 4. Do fan drive belt and all related pulleys rotate freely? YES NO YN 1. Replace variable speed fan drive unit (Old Configuration) (WP 0249 00), 2. Verify no faults found. 2Y 1. Replace engine thermostat (WP 0237 00). 2. Verify no faults found. 0015 00-2 3. Disengage variable speed fan drive override switch (see your -10) (New Configuration). (Old Configuration). (New Configuration) (WP 0249 01). Change 2