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 FY 1. Remove heater control box (WP 0702 00). 2. Check continuity between lead ends of heater output jack (1), pin A (2), and ON/OFF/START switch terminal 14 (3). 3. Does multimeter read 0 ohms? YES NO FYN 1. Replace faulty lead (WP 0702 00). 2. Verify no faults found. F2Y 1. Replace heater ON/OFF/START switch (WP 0702 00). 2. Verify no faults found. GY 1. Is heater exhaust cold? YES NO GYN 1. Replace heater (WP 0703 00 or WP 0704 00). 2. Verify no faults found. G2Y 1. Loosen fuel inlet line (1) to heater with heater switch on START. 2. Does fuel fail to flow out of loosened fitting? YES NO G2YN 1. Replace heater (WP 0703 00 or WP 0704 00). 2. Verify no faults found. 0086 00-9 Change 1