TM-9-2350-277-10

CARRIER, M113A3, M577A3, M1059A3, M1064A3, M1068A3 AND M58

TECHNICAL MANUAL; OPERATOR’S MANUAL

TM-9-2350-277-10 - Page 428 of 889

TM 9-2350-277-10

OPERATE ENGINE COOLANT HEATER (BELOW –25 F(–31 C)) — Continued

0062 00

5.

Move RUN-OFF-START switch to RUN as soon as indicator light comes on. Do not stop in OFF position.

6.

If coolant heater does not start, repeat Step 4 and Step 5. If coolant heater does not start after three tries, troubleshoot

heater (WP 0089 00).

NOTE

Coolant heater always starts at low heat. It switches to high heat if HI-LO switch is set to HI.

7.

Move HI-LO switch to HI or LO.

NOTE

When HI-LO switch is at HI, heater will automaticallygotolowheatif coolant temperature

reaches 190 F(88 C)

.Itwillgobacktohighheatifcoolanttemperaturedropsto120 F(49

C). If coolant reaches a temperature of 245 F - 260

F (118 - 126 C), heater will stop and

must be restarted.

TURN COOLANT HEATER OFF

NOTE

When coolant heater is turned off, blower will run until heater is purged of fuel and burner

is cool. Indicator light will stay on until blower stops. Driver should stay in carrier until

blower stops.

1.

Move RUN-OFF-START switch to OFF.

2.

Allow coolant heater to purge itself.

006200-3

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