Check Air Conditioning System

LV8415-UN-14JUL03

A - Air Conditioner and Defog Switch

B - Air Conditioner Temperature Control Knob

C - Heater Temperature Control Knob

D - Fan Speed Control Knob

Perform following checks if air conditioning system does not cool, or cooling is intermittent:

1. Confirm that system does not function correctly. Reconfirm after cleaning or adjustments are made.

   1. Turn air conditioner and defog switch (A) on.

   2. Set fan speed control (D) to highest speed.

   3. Set temperature control knobs (B and C) to coldest setting.

   4. Operate engine at 2000 rpm.

   5. Check air vents to confirm that cold air is not present.

2. Inspect and clean cab air filters. Replace filters if necessary. See “Clean Air Filters” in this section.

3. Clean grille and radiator. See “Clean Grille Screens and Cooling Package” in the Air, Fuel, Coolant, and Exhaust Maintenance section.

4. If problems persist, see your John Deere dealer.