Expansion Valve: Service and Repair

A/C UNIT ASSEMBLY

EXPANSION VALVE : Removal and Installation


CAUTION:
Perform lubricant return operation before each refrigeration system disassembly. However, if a large amount of refrigerant or lubricant is detected, never perform lubricant return operation. Perform Lubricant Return Operation.

REMOVAL

1.Use a refrigerant collecting equipment (for HFC-134a) to discharge the refrigerant. Recycle Refrigerant.
2.Remove cowl top and cowl top extension. Removal And Installation.





3.Remove mounting nut, and then move lower dash insulator aside.

Black arrow indicates : Nut
White arrow indicates : Vehicle front





4.Remove mounting bolt (A), and then disconnect low-pressure flexible hose (1) and high-pressure pipe (2) from expansion valve.

CAUTION:
Cap or wrap the joint of the A/C piping and expansion valve with suitable material such as vinyl tape to avoid the entry of air.

White arrow indicates : Vehicle front





5.Remove mounting bolts (A), and then remove expansion valve.

INSTALLATION

Note the following items, and then install in the reverse order of removal.

CAUTION:
- Replace O-rings with new ones. Then apply compressor oil to them when installing.
- Check for leakages when recharging refrigerant. Leak Test.