Diesel Data: Automotive Repair

Expansion Block/Orifice Tube: Service and Repair


REMOVAL
1. Recover refrigerant from the A/C system with a refrigerant recovery machine.
2. Disconnect clips from expansion valve lines.
3. Disconnect quick connectors on expansion valve with Quick Connector Kit 7193
4. Remove lines at expansion valve.

NOTE: Cap lines while system is open to prevent moisture from entering system.






5. Remove two retaining bolts from expansion valve and remove valve
6. Remove expansion valve.
7. Remove expansion valve gasket.

INSTALLATION
1. Install a new gasket and install valve on evaporator.
2. Install expansion valve bolts and tighten to 11 N.m (100 in.lbs.).
3. Install new 0-rings and install A/C lines on expansion valve.
4. Install quick connector clips.
5. Evacuate and charge system