TM 5-2410-240-10
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OPERATION IN EXTREME COLD CONTINUED
Starting Procedures - Machine Equipped with Arctic Kit
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C AU T I O N
At temperatures nearing -40 F (-40 C), it is necessary to shut off the arctic heater at least
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 engine has started. If for
some reason the engine is immediately shut down after arctic heater has been used, the
battery disconnect switch must remain ON for at least five minutes to allow 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.
If the arctic heater does not start and it shuts down, it is allowable to turn the arctic heater
switch off and then back on to restart the heater a total of 3 times. If after 3 start attempts,
the arctic heater fails to start, notify Field Maintenance.
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 shutoff 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 shutoff valve.
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 result in engine bearing damage due
to inadequate lubrication and will likely fail to start the engine and deplete batteries.
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. If this occurs, notify Field Maintenance.
8. Allow engine to idle for at least five minutes before moving machine.
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1. Before starting, ensure fuel and oil in the engine and hydrostatic drive/hydraulic systems are thin enough to
flow. If oil drips from the dipstick, it is thin enough for engine to be started.
2. Run the engine at reduced speed only long enough to circulate the oil through the engine. Then increase
engine speed and warm up the engine. Low idling speeds during extremely cold temperatures can result in
incomplete combustion and form heavy deposits on the valves.
3. Cover radiator if necessary to bring engine up to operating temperature.
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