Procedure:

1. Put on rubber gloves and safety goggles.

2. Pour the small bottle of the air conditioning system disinfectant kit, P/N 25533404 into the large bottle. Seal and invert the large container once or twice to mix the contents.

3. Connect battery charger to the battery and charge, during cleaning process, to avoid draining the battery.

4. Remove the power module/resistor block as described in the appropriate Service Manual to access the evaporator core face closest to the blower. Do not disconnect the wiring connector.

CAUTION: POWER MODULE HEAT SINK OR RESISTOR BLOCK MAY BE HOT.

NOTICE: DO NOT ALLOW THE METAL HEAT SINK OF THE POWER MODULE OR THE COILS OF THE RESISTOR TO BE GROUNDED TO ANY METAL SURFACE AS THIS MAY RESULT IN INTERNAL CIRCUITRY DAMAGE.

FIGURE 1:

5. Check the heater/evaporator case for debris. Remove any debris present through the power module/resistor block opening. If the debris is imbedded into the evaporator core face and cannot be removed, the core will have to be removed from the vehicle and cleaned off the car. If a large amount of debris is present in the heater/evaporator case, the air inlet screen will require sealing around the windshield wiper post holes and fender edges as shown in Figure 1.

6. Turn the ignition to the "On" position but do not start the vehicle.

7. Set the mode selector (button or lever) to vent, blower switch to low speed and temperature lever to full cold.

8. Open all windows and doors and exit the vehicle.

CAUTION: DO NOT ENTER THE VEHICLE UNTIL CLEANING PROCEDURE IS COMPLETED TO AVOID EXPOSURE TO DISINFECTANT.

9. Place drain pan with at least a two quart capacity below the heater/evaporator drain to catch the disinfectant and rinse water runoff.

FIGURE 2:

10. Position pedestal fan as shown in Figure 2 and turn on high to provide cross ventilation during cleaning procedure.

11. Use Kent-Moore tool J-36645 or equivalent siphon-type cleaning spray gun capable of delivering two ounces per minute of liquid when driven with shop air at 80-90 psi. Insert the nozzle of the spray gun through the power module/resistor block opening and insert the siphon hose into the container of disinfectant. Take care to place the botge of disinfectant in a secure upright position, to avoid spilling the contents. Direct the spray toward evaporator face, taking extra care to ensure adequate coverage of the corners and edges, completely saturating the entire core. Use the entire container of disinfectant.
12. Reach into the vehicle and turn the ignition to the off position and allow the evaporator core to soak for five (5) minutes.

13. Reach into the vehicle and start the engine.

14. Use the spray gun and one (1) quart of clean water to thoroughly rinse the evaporator core, to remove any and all of the disinfectant residue.

15. Reach into the vehicle and turn off the ignition and reinstall the power module/resistor block.

CAUTION: POWER MODULE/RESISTOR BLOCK MAY BE HOT.

16. Dispose of disinfectant and rinse water in the drain pan into a sanitary drain system.

17. Disconnect the battery charger.