Expansion Valve: Service and Repair

Valve - Thermostatic Expansion (TXV)

Service Repair No - 82.25.01

Remove
1. Disconnect battery earth lead.
2. Recover refrigerant from A/C system.







3. Remove bolt securing A/C pipes to TXV, disconnect pipes and discard 'O' rings. Plug A/C connections.

WARNING: Under no circumstances should refrigerant hoses be disconnected without first discharging the system.







4. Remove 2 Allen screws securing TXV to bulkhead, withdraw assembly and discard 'O' rings.

CAUTION: Before disconnecting or removing components, ensure the immediate area around joint faces and connections are clean. Plug open connections to prevent contamination.

Refit
1. Clean mating faces and seal recesses on evaporator, TXV and block and pipe assembly.
2. Lubricate new 'O' rings with clean refrigerant oil and fit to TXV pipes.
3. Fit block and pipe assembly to TXV and tighten bolts to 5 Nm (3.5 lbf.ft).
4. Recharge A/C system.
5. Connect battery earth lead.