TM 5-2410-241-10
0006
OPERATION IN EXTREME COLD CONTINUED
Starting Procedures - Machine Equipped with Arctic Kit
0006
C AU T I O N
At temperatures nearing -40F (-40C), it is necessary to shut off the arctic heater at leas
t
30 seconds before attempting to start the machine's engine. Failure to follow this caution
may result in internal damage to the heater or localized boiling of the coolant in the heater
body, which may cause a heater hose to come off.
The arctic heater requires a cool-down period after the machine has started. If for some
reason the engine is immediately shut down after the arctic heater has been used, the
battery disconnect switch must remain ON for at least five minutes to allow the arctic
heater to cool. Failure to follow this caution may result in damage to equipment.
N OT E
Ensure engine start switch is in the OFF position (WP 0004).
If arctic heater has not been started for several months, or if heater is being started for the
first time, it may take several attempts to start.
If arctic heater fails to stat at first attempt, it will automatically attempt to start a second
r
time. If heater still does not start, it will shut down.
During operation, arctic heater continually s nses supply voltage. If voltage is too low or
e
too high, heater will automatically shut down. If this occurs, notify Field Maintenance.
1. Open arctic heater fuel valve (WP 0004).
2. Activate arctic heater as follows:
a. Turn battery disconnect switch to ON position (WP 0004).
b. Activate arctic heater switch (WP 0004).
3. Allow heater to run up to 40 minutes.
4. Push arctic heater switch to turn heater off, then wait at least 30 seconds.
5. Shut off arctic heater fuel valve (WP 0004).
C AU T I O N
At temperatures of less than -25F (-32C), be sure to keep starter engaged until engine
speed approaches 500 rpm. This could take up to 120 seconds. Multiple, short (15-
second) start attempts at cold temperatures can damage engine bearings damage due to
inadequate lubrication, and the engine may fail to start.
6. Start engine (WP 0005).
7. Check that engine oil pressure gauge on monitor system registers pressure within 10 seconds of engine
starting. Shut engine off immediately if oil pressure does not register. Notify Field Maintenance.
8. Allow engine to idle for at least five minutes before moving machine.
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