Expansion Valve: Service and Repair

RENEW

Expansion Valve:

- Depressurize the air conditioning system.
- Partially drain the engine coolant.
- Disconnect the hose unions (1) and seal with clean blanking caps.
- Release the clip securing the water valve to the cylinder head hose, disconnect the water valve from the hose, and move the water valve clear of the expansion valve.
- Remove the padding from the capillary tube (2).
- Disconnect the capillary tube at the union (3).
- Release the valve by unscrewing the union nut (4).

NOTE: To avoid straining the joint or the pipe, ensure the valve is held firmly as the union is unscrewed.

- Slacken the two screws securing the capillary tube clear of the clamp.
- Remove the valve assembly carefully, manoeuvering the capillary tube clear of the clamp.
- On fitting replacement unit, ensure new O-rings are fitted, the cooling system is refilled, and the air conditioning system is recharged.