Expansion Valve: Service and Repair

REMOVAL

1. Disconnect and isolate the battery negative cable.
2. Recover the refrigerant from the refrigerant system.
3. Disconnect the liquid line refrigerant line fastener at the condenser outlet tube. Install plugs in, or tape over all of the opened refrigerant line fittings.

CAUTION: Always use two wrenches when loosening or tightening tube fittings. Use one wrench to hold one side of the connection stationary, while loosening or tightening the other side of the connection with a second wrench.

4. Remove the front half of the liquid line from the rear half by disconnecting it at the tube fitting. Install plugs in, or tape over all of the opened refrigerant line tube fittings.
5. Remove the fixed orifice tube from the rear half of the liquid line using a pair of needle nose pliers. Note the orientation of the fixed orifice tube for correct reinstallation.

INSTALLATION

Fig.7 Fixed Orifice Tube - Typical:

1. Insert the fixed orifice tube into the rear half of the liquid line. Be certain that it is properly oriented.
2. Remove the tape or plugs from all of the refrigerant line tube fittings. Install a new O-ring on the liquid line tube fitting. Connect and tighten the tube fitting on the front half of the liquid line to the tube fitting on the rear half of the liquid line.
3. Remove the tape or plugs from all of the refrigerant line fittings. Install the front half of the liquid line to the condenser outlet tube. Tighten the fastener to 22.6 ± 3.39 Nm (200 ± 30 in. lbs.).
4. Connect the battery negative cable.
5. Evacuate the refrigerant system.
6. Charge the refrigerant system.