TM 10-3950-672-10
i. After cool down period, shut down engine by turning IGNITION switch (28, Figure 5-1) to OFF.
j. Remove ignition key.
k. Close and latch sliding cab door window. Then close and lock cab door.
l. Close and secure all frame access covers.
5-3.20 Operating Cab Heater.
NOTE
The cab heater has air ducts that release air both under the operator's seat and above the
main control panel (to defrost the windshield). The air flow through both ducts is controlled
by the FAN knob.
a. Turn FAN knob (19, Figure 5-1) to control the speed of the fan.
b. Pull air TEMP control knob (20) for warm air and push the knob in for cool air.
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