Expansion Valve: Service and Repair

TXV - Installed View:

Tools Required:
J 39500 A/C Refrigerant Recovery, Recharging, and Recycling Station

Remove or Disconnect

1. Recover the A/C system.
2. Negative battery cable.
3. Right side under dash insulator panel.
4. Electrical junction box at heater core cover.
5. Left side insulator panel.
6. Steering column filler.
7. Partially remove shift console, if equipped, to gain access to floor duct and heater core cover.
8. Floor duct.
9. Heater core cover.

NOTICE: The heater core will be suspended by the heater core pipes. Do not apply any downward pressure on the core, or damage may occur to the heater core pipes.

10. Heater core shroud and straps.
11. Insulation tape from valve fittings.
12. Thermal expansion valve.

Clean
^ Clean all insulation tape from evaporator fittings to insure correct seating/torque of O-rings.

Install or Connect

1. Thermal expansion valve (including installation of new insulation wrap).

Tighten
^ Fitting from Evaporator inlet 17 N.m (13 lb ft).
^ Fitting to Evaporator 24 N.m (17 lb ft).
^ From Evaporator Outlet 8 N.m (71 lb in).

2. Heater core shroud and straps.

Tighten
^ Screws to 1.4 N.m (12 lb in).

3. Heater core cover.
^ There is a mounting screw located in a recess in the center of the cover

Tighten
^ Screws to 1.4 N.m (12 lb in).

Important
^ The fittings on the TXV should be leak checked before finishing re-assembly. This can be done without running vehicle.
a. Evacuate and partially recharge A/C system with 0.48 kg (1 lb) R-134a.
b. Leak test.

4. Floor duct.
5. Steering column filler.
6. Left side insulation panel.
7. Electrical junction box to heater core cover.
8. Right side insulation panel.
9. Console.
10. Finish charging A/C system.
11. Performance check system.