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TM-9-2350-261-20-1 Unit Maintenance Manual Volume 1 M113A2 M577A2 M1064 M1068 M1059 M901A1 Download

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TM 9-2350-261-20-1 COOLANT HEATER MALFUNCTIONS — Continued 0070 00 B3Y 1. Remove heater control box (WP 0648 00). 2. Measure resistance between lead ends from circuit breaker terminals 16 (1) and 17 (2). 3. Does multimeter read 0 ohms? B3YN 1. Replace heater circuit breaker (WP 0648 00). 2. Verify no faults found. B4Y 1. Measure resistance between lead ends from circuit breaker terminal 17 (1) to indicator light terminal 3 (2). 2. Does multimeter read 0 ohms? B4YN 1. Repair/replace faulty lead (WP 0312 00). 2. Verify no faults found. B5Y 1. Replace indicator light assembly (WP 0648 00). 2. Verify no faults found. 0070 00-4