TM-9-2350-261-10 Operator Manual M113A2 M577A2 M1064 M1068 M1059 M901A1 Download
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TM 9-2350-261-10 OPERATE ENGINE COOLANT HEATER BELOW –25 F (–31 C) — Continued 0060 00 5. Move RUN-OFF-START switch to START. Hold switch in START until indicator light comes on. 6. Move RUN-OFF-START switch to RUN as soon as indicator light comes on. Do not stop in OFF position. 7. If coolant heater does not start, repeat Steps 4 - 5 above. If coolant heater does not start after three tries, troubleshoot heater (WP 0074 00). NOTE Coolant heater always starts at low heat. It switches to high heat if HI-LO switch is set at HI. 8. Move HI-LO switch to HI or LO. NOTE When HI-LO switch is at HI, heater will automatically go to low heat if coolant temperature reaches 190 F (88 C). It will go back to high heat if coolant temperature drops to 120 F (49 C). If coolant reaches a temperature of 245 to 260 F (118 to 126 C), heater will stop and must be restarted. 0060 00-3 º º º º º º º º º º