Expansion Valve: Service and Repair
Removal Procedure1. Remove the heater/air distributor case assembly.
2. Remove the screws that secure the evaporator case halves.
3. Remove the evaporator core case cover.
4. Slide the evaporator flange support plate upward to facilitate removal of the evaporator.
5. Remove the evaporator from the case.
6. Remove the expansion valve bolts.
7. Remove the expansion valve.
8. Remove the O-rings from the evaporator lines and the air conditioning (A/C) lines.
Installation Procedure
1. Clean the O-ring surface areas of dirt or contamination.
2. Install new O-rings on the evaporator lines and the A/C lines.
3. Install a new expansion valve onto the evaporator lines.
4. Insert the expansion valve bolts through the expansion valve into the mounting surface of the evaporator flange.
Tighten
Tighten the expansion valve bolts to 10 N.m (89 lb.in).
5. Install the evaporator core into the case. Center the evaporator flange in the case opening.
6. Install the evaporator core case cover with the screws.
7. Install the heater/air distributor case.
8. Connect the negative battery cable.
9. Evacuate and recharge the A/C system.