YOKE 9S5245 - Caterpillar

Air Conditioner Switch
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Air Conditioner Switch (if equipped) - Press the top of the switch in order to turn the air conditioner to the ON position. Press the bottom of the switch in order to turn the air conditioner to the OFF position.Fan Control
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Fan Speed Switch - This knob controls the three-speed blower fan motor.
OFF (1) - Move the knob to this position in order to stop the blower fan motor.
LOW (2) - Move the knob to this position for the lowest fan speed.
MEDIUM (3) - Move the knob to this position for a medium fan speed.
HIGH (4) - Move the knob to this position for the highest fan speed. Temperature Control
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Temperature Control Knob (1) - Turn the knob clockwise to COOL. Turn the knob counterclockwise to WARM. Heating and Air Conditioning System Operation
The heating and air conditioning system performs four functions:Heating - Turn the blower fan switch control to the desired speed (LOW, MEDIUM, or HIGH). Adjust the temperature control knob for the desired temperature.
Cooling - Press the top of the switch (2) in order to turn the air conditioner to the ON position. Turn the blower fan switch control to the desired speed (LOW, MEDIUM, or HIGH). Adjust the temperature control knob for the desired temperature. Pressurizing - When heating or cooling is not desired, pressure inside the cab will help keep dust out.Turn the temperature control knob for the desired temperature. To produce the volume of air that is needed to keep dust out, set the blower fan switch control to LOW, to MEDIUM, or to HIGH.Defogging - Press the top of the switch (2) in order to turn the air conditioner to the ON position. Turn the blower fan switch control to the desired speed (LOW, MEDIUM, or HIGH). Adjust the temperature control knob until the moisture level is lowered and the windshield and side windows are free of moisture. Rear Window Defroster (If Equipped)
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Rear Window Defroster - Press on the top of the switch in order to activate the rear window defroster.
Turn off the rear window defroster when the rear window is defrosted in order to avoid unnecessary electrical overload.