COOLANT HEATER MALFUNCTIONS CONT. - TM-9-2350-261-20-1

COOLANT HEATER MALFUNCTIONS CONT. - TM-9-2350-261-20-1_431

COOLANT HEATER MALFUNCTIONS CONT. - TM-9-2350-261-20-1_433

TM-9-2350-261-20-1 Carrier Personnel Full Tracked Armored M113A2 2350-01-068-4077 Carrier Command Post Light Tracked M577A2 2350-01-068-4089 Manual
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TM 9-2350-261-20-1 1. 2. 3. 4. Install heater harness on heater control box jack. Remove heater harness 402A plug (1) from heater fuel pump jack (2). Measure voltage between plug (1) pin and ground with HEATER switch on START. Does multimeter read more than 17 volts? 1. Replace coolant heater fuel pump (page 32-16). 2. Verify no faults found. 1. 2. 3. Remove heater control box (page 32-42). Measure resistance between lead ends of heater output jack (1) pin A (2) and ON/OFF/START switch terminal 14 (3). Does multimeter read 0 ohms? 1. Replace heater ON/OFF/START switch (page 32-42). 2. Verify no faults found. 1. Faulty heater harness circuit 402. 2. Notify your supervisor. 4 1. Repair/replace faulty Iead (page 14-3). 2. Verify no faults found. 3 - 2 2 3

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