Expansion Valve: Service and Repair

Air Conditioning Evaporator Thermal Expansion Valve Replacement

Removal Procedure





Caution:
Refer to Battery Disconnect Caution Battery Disconnect Caution.

1. Disconnect the negative battery cable.

2. Recover the refrigerant Refer to Refrigerant Recovery and Recharging Refrigerant Recovery and Recharging.

3. Remove the suction hose/liquid pipe block retaining nuts at the fire wall.





4. Remove the expansion valve connector block retaining stud bolts.

5. Remove the expansion valve.

6. Discard the O-rings.

Installation Procedure





1. Clean the grooves that fit the O-rings of any dirt or contamination.

2. Install new O-rings on the evaporator tubes.

3. Install a expansion valve onto the evaporator tubes.

Notice:
Refer to Fastener Notice Fastener Notice.

4. Insert the expansion valve connector block retaining stud bolts.

Tighten the expansion valve retaining stud bolts to 8 Nm (71 lb in).





5. Install the suction hose/liquid pipe block retaining nuts.

Tighten the suction hose/liquid pipe block-to-expansion valve retaining nuts to 14 Nm (10 lb ft).

6. Connect the negative battery cable.

7. Evacuate and recharge the A/C system. Refer to Refrigerant Recovery and Recharging Refrigerant Recovery and Recharging.