Rear A/C Expansion Valve

REMOVAL

WARNING: REFER TO THE APPLICABLE WARNINGS AND CAUTIONS FOR THIS SYSTEM BEFORE PERFORMING THE FOLLOWING OPERATION. FAILURE TO FOLLOW THE WARNINGS AND CAUTIONS COULD RESULT IN POSSIBLE PERSONAL INJURY OR DEATH.

1. Disconnect and isolate the negative battery cable.
2. Remove the cover from the rear A/C evaporator housing.
3. Recover the refrigerant from the rear refrigerant system.

Rear A/C Expansion Valve:

4. Remove the insulating tape from around the area of the rear A/C expansion valve.
5. Disconnect the equalizer tube from the rear evaporator outlet tube.
6. Disconnect the rear liquid line from the rear A/C expansion valve and remove and discard the O-ring seal.
7. Disconnect the rear A/C expansion valve from the rear evaporator inlet tube and remove and discard the O-ring seal.
8. Remove the retaining clamp that secures the sensor bulb to the evaporator outlet tube and remove the expansion valve, capillary tube and sensor bulb as an assembly.
9. Install plugs into, or tape over the opened refrigerant line and evaporator tube fittings and expansion valve ports.

INSTALLATION
1. Remove the tape or plugs from the rear refrigerant line and evaporator tube fittings and the rear expansion valve ports.
2. Lubricate a new O-ring seal with clean refrigerant oil and install it onto the rear evaporator inlet tube fitting. Use only the specified O-ring seal as it is made of a special material for the R-134a system. Use only refrigerant oil of the type recommended for the rear A/C compressor in the vehicle.
3. Install the rear A/C expansion valve onto the rear evaporator inlet tube. Tighten the nut to 35 N.m (26 ft. lbs.).
4. Lubricate a new O-ring seal with clean refrigerant oil and install it onto the rear liquid line fitting. Use only the specified O-ring seal as it is made of a special material for the R-134a system. Use only refrigerant oil of the type recommended for the rear A/C compressor in the vehicle.
5. Connect the rear liquid line to the rear A/C expansion valve. Tighten the nut to 35 N.m (26 ft. lbs.).
6. Connect the equalizer tube to the rear evaporator outlet tube. Tighten the nut to 10 N.m (88 in. lbs.).
7. Position the rear expansion valve sensing bulb onto the rear evaporator outlet tube and install the retaining clamp securely.
8. Install new insulating tape around the rear A/C expansion valve area.
9. Reconnect the negative battery cable.
10. Evacuate the rear refrigerant system.
11. Charge the rear refrigerant system.
12. Install the cover onto the rear A/C evaporator housing.