Expansion Valve: Service and Repair

Removal Procedure




1. Remove the Heater/Air Distributor Case Assembly.
2. Remove the screws securing the evaporator case halves.
3. Remove the evaporator core case cover.
4. Slide the evaporator flange support plate upward to facilitate evaporator removal.




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 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 mount surface of the evaporator flange.

Tighten
Tighten the expansion valve bolts to 10 Nm (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 system.