TM-9-2350-277-20-2 Unit Maintenance Manual Volume 2 M113A3 M577A3 M1064A3 M1068A3 M58 Download
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TM 9-2350-277-20-2 ADJUST VENTILATING FAN DRIVE BELT — Continued 0242 00 4. Place yardstick (5) on pulleys (6) and (7). 5. Place tensiometer (3) on belt (1) at midspan and at right angle to belt. 6. Press on top of tensiometer (3) until lower O-ring (2) aligns with yardstick (5). Remove tensiometer. 7. Take tensiometer reading at point where upper O-ring (4) stopped. Reading must be 12-15 lbs (5-7 kg). 8. To change belt tension, loosen locknut (8) and adjust fan idler adjusting nut (9) to obtain tension required. Tighten locknut. FOLLOW-THROUGH STEPS 1. Turn thermostatic fan speed switch bypass button ON (see your -10). 2. Start engine (see your -10). 3. Run in cooling fan belt for 10 minutes with engine at 2000 rpm. 4. Stop engine (see your -10). 5. Check belt tension. Adjust as needed. 6. Turn thermostatic fan speed switch bypass button OFF (see your -10). 7. Install power plant access panels (WP 0439 00) 8. Install rear power plant access panels (see your -10). END OF TASK 0242 00-2