Air Conditioning
- If the cab is hot inside, temporarily open the windows to let the hot air out.
- Move the air selection switch to the non-air conditioning
face only position and turn the fan switch off before starting the
engine. See Fig..
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Fan Switch
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Air Conditioning Settings
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Face Only Setting (non-air conditioning)
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Temperature Control Switch
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Maximum Air Conditioning
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Fresh Air/Recirculation Switch
Fig. 1, Air Conditioning Settings
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- Start the engine.
- Move the air selection switch to either one of the air conditioning settings. With the control at either one of the air conditioning settings, fresh air is drawn into the cab. With the control at maximum air conditioning, the air inside the cab is recirculated.
- Move the temperature control switch counterclockwise for cool air. In this position, no heat is given off by the heater.
- Turn the fan switch to the highest speed, 4.
- As soon as cool air is flowing from the dashboard outlets, close the windows. Adjust the fan switch setting as desired.
- If the air from the vents is too cold, move the temperature
control switch clockwise for warmer air flow.
Important: To prevent the buildup of fumes or odors inside the cab (for example, from smoking), do not operate the heater and air conditioning system in a recirculation mode for more than 20 minutes.
Important: Operate the air conditioner at least five minutes each month, even during cool weather. This helps prevent drying and cracking of tubing seals, reducing refrigerant leaks in the system. Operate the air conditioner only after the engine compartment is warm, and the interior of the cab is 70°F (21°C) or higher. During cold weather, the heater can be operated at the same time to prevent discomfort.
Important: If the outside air is dusty or smoky, set the air selection switch at maximum air conditioning and keep the windows and vent closed to prevent drawing in dust or smoke. On vehicles with the fresh air/recirculation switch, recirculated air can be selected either with the switch or by setting the air selection switch to maximum air conditioning.