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 PERSONNEL HEATER MALFUNCTIONS—Continued 0086 00 10Y 1. Listen to heater until blower shuts off. 2. Does blower shut off in less than 5 minutes? YES NO 10YN 1. Replace heater (WP 0703 00 or WP 0704 00). 2. Verify no faults found. 11Y 1. Heater is operating properly. 2. No faults found. AY 1. Remove heater control box (WP 0701 00). 2. Check continuity on HI/LO switch between terminals 12 (1) and 13 (2). 3. Does multimeter read 0 ohms? YES NO AYN 1. Replace heater HI/LO switch (WP 0702 00). 2. Verify no faults found. A2Y 1. Repair lead between heater switch and jack or heater switch and ON/OFF/START switch (WP 0382 00). 2. Verify no faults found. 0086 00-3 Change 1