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TM 10-3930-669-20
OPERATION TEST
(1)
Start engine (TM 10-3930-669-10).
(2)
Set heater temperature control to
maximum position.
(3)
Set heater blower switch to LOW position.
(4)
Operate forklift for 30 minutes.
(a)
If heater does not blow hot air,
replace engine oil cooler (Para 3-7).
(b)
If heater blows hot air, oil cooler
thermostat is OK.
(5)
Shut down engine.
VERIFY REPAIR
(1)
Start engine (TM 10-3930-669-10).
(2)
Set heater temperature control to maximum
position.
(3)
Set heater blower switch to LOW position.
(4)
Operate forklift for 30 minutes.
(a)
If heater does not blow hot air, fault not
corrected. Perform Steps (5) and (6)
below. repeat procedure and notify
Supervisor.
(b)
If heater blows hot air, fault corrected.
(5)
Set heater blower switch to OFF position.
(6)
Shut down engine.
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