TM-9-2350-261-10 Operator Manual M113A2 M577A2 M1064 M1068 M1059 M901A1 Download
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TM 9-2350-261-10 TROUBLESHOOTING TABLE — Continued 0074 00 INITIAL SETUP: M a i n t e n a n c e L e v e l Operator ENGINE COOLANT HEATER MALFUNCTION TEST OR INSPECTION CORRECTIVE ACTION 1. HEATER DOES NOT START WITH RUN-OFF-START SWITCH HELD IN START POSITION. HEATER MOTOR RUNS. 1. Check to see if fuel tank manual shutoff valve is closed. Open fuel tank manual shutoff valve (WP 0004 00). 2. HEATER DOES NOT START WITH RUN-OFF-START SWITCH HELD IN START POSITION. HEATER MOTOR DOES NOT RUN. 1. Push PRESS-TO-TEST switch on engine coolant heater control box to test for electrical power. If light does not light, check for loose electrical connections at control box and heater. Tighten loose connections. 2. Check to see if battery connections are tight. Notify unit maintenance to tighten loose battery connections. 3. COOLANT HEATER OVERHEATS. 1. Check to see if one or both coolant shutoff valves are closed. Open coolant shutoff valves (WP 0060 00). 4. COOLANT HEATER OUTPUT IS TOO LOW. 1. Check to see if the HI-LO switch is in LO position. Move HI-LO switch to HI position (WP 0060 00). 5. BATTERIES OVERHEAT. 1. Air temperature is too warm to need engine coolant heater Turn off engine coolant heater (WP 0060 00). You do not need to use engine coolant heater if temperature is above 25 F (-32 C). 2. Engine is running at same time as engine coolant heater. Turn off engine coolant heater (WP 0060 00) as soon as engine starts. 3. Batteries are overcharged and boiling out liquid. Record faults on DA Form 2404 and notify unit maintenance. 0074 00-21/22 blank - º º