Expansion Valve: Service and Repair

Fig 44 Liquid Line Clip:

Fig 45 Suction Line Clip:

WARNINGS:
- Avoid breathing a/c refrigerant and lubricant vapor or mist. Exposure may irritate eyes, nose and throat. use only approved service equipment meeting SAE requirements to discharge R-134a system. If accidental system discharge occurs, ventilate work area before resuming service.

- R-134a service equipment or vehicle A/C system should not be pressure tested or leak tested with compressed air. Some mixtures of air/R-134a have been shown to be combustible at elevated pressures. These mixtures are potentially dangerous and may result in fire or explosion causing injury or property damage.

REMOVAL
1. Remove refrigerant from the A/C system using a refrigerant recovery machine.
2. Disconnect clips from expansion valve lines.

Fig 46 Special Tool 7240 For Liquid Line:

Fig 47 Special Tool 7242 For Suction Line:

3. Use special tool kit 7193 to disconnect quick connectors on expansion valve.

Fig 48 Lines At Expansion Valve:

4. Remove lines at expansion valve.

Fig 49 Expansion Valve Bolts:

5. Remove two retaining bolts from expansion valve.

Fig 50 Expansion Valve:

6. Remove expansion valve.
7. Remove expansion valve gasket.

CAUTION: Always install a new gasket when replacing expansion valve.

INSTALLATION
For installation, reverse the above procedures.
- Tighten new expansion valve to 11 Nm (100 in lb).