8-6 Heating and air conditioning
2 Using the heater controls
2.1 To heat the cab
Place the air selection switch in the foot/defrost 75-
25 position or in the foot position.
2.2 For cool airflow toward the head and warm
airflow toward the feet
Place the air selection switch in the bi-level
position or in the foot position.
2.3 To defrost or defog the windshield
Place the air selection switch in the defrost
position.
If you wish to defog the windshield quickly, turn the
dial on the fan switch clockwise to maximum fan
speed.
To defrost the windshield faster, also turn the dial on
the temperature control switch clockwise to maxi-
mum temperature.
2.4 To ventilate the cab
Press the recirculation button to select fresh air, and
turn the dial on the air selection switch to the face
position.
3 Cleaning the HVAC air filters
Clean the air filters in the heating, ventilation, and
air conditioning (HVAC) system every 6 months.
A dust-loaded HVAC filter can cause malfunction of
the blower motor. P. 11-60
Z11307
Z11309
Z11310
Z11312
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