Air Conditioning Evaporator Rear Tube Replacement

Air Conditioning Evaporator Rear Tube Replacement

Special Tools

J 39400-A - Halogen Leak Detector

Removal Procedure

1. Recover the refrigerant from the A/C system. Refer to Refrigerant Recovery and Recharging Refrigerant Recovery and Recharging.

2. Remove the battery. Refer to Battery Replacement (LS3) Removal and ReplacementBattery Replacement (LS7 or LS9) Removal and Replacement.

3. Remove the intake manifold. Refer to Intake Manifold Replacement Intake Manifold Replacement.





4. Disconnect the front evaporator inlet line from the body retaining clip.

5. Disconnect the refrigerant pressure sensor electrical connector.





6. Disconnect and remove the A/C tube connectors from the evaporator rear line assembly. Refer to Air Conditioning Line/Tube Connector Removal/Replacement Air Conditioning Line/Tube Connector Removal/Replacement.

Note:
Immediately cap or tape the open A/C components in order to prevent contamination.

7. Disconnect the front evaporator inlet line from the evaporator rear line assembly.

8. Remove and discard O-rings.

9. Cap or tape the front evaporator inlet line.

10. Disconnect the A/C compressor line from the evaporator rear line assembly.

11. Remove and discard the O-rings.

12. Cap or tape the front evaporator line and A/C compressor line.





13. Remove the heater pipe bracket retaining nut (1) from the cowl stud.

14. Remove the thermal expansion valve (TXV) block fitting nut (2).

15. Disconnect the evaporator rear line assembly from the TXV (3).

16. Disconnect the evaporator rear line assembly from the retainer bracket stud.

17. Remove the rear evaporator line assembly from the vehicle.

18. Remove and discard the seal washers.

19. Cap or tape the TXV (3).

Installation Procedure





Note:
If replacing the evaporator rear line assembly, add the specified amount of polyalkylene glycol (PAG) oil directly to the evaporator rear line assembly. Refer to Refrigerant System Specifications Specifications.

1. Remove the cap or tape from the TXV (3).

2. Install new seal washers to the evaporator rear line assembly. Refer to Air Conditioning System Seal Replacement Air Conditioning System Seal Replacement.

3. Install the evaporator rear line assembly to the vehicle.

4. Connect the evaporator rear line assembly to the retainer bracket stud.

5. Connect the evaporator rear line assembly to the TXV (3).

Caution:
Refer to Fastener Caution Fastener Caution.

6. Install the TXV block fitting nut (2) and tighten to 22 Nm (16 lb ft).

7. Install the heater pipe bracket retaining nut (1) to the cowl stud and tighten to 10 Nm (89 lb in).





8. Remove cap or tape from the front evaporator line and A/C compressor line.

9. Install new O-rings to the rear evaporator line assembly. Refer to Air Conditioning O-Ring Seal Replacement Air Conditioning O-Ring Seal Replacement.

10. Connect the A/C compressor line to the evaporator rear line assembly.

11. Connect the front evaporator line to the evaporator rear line assembly.

12. Connect the A/C tube connectors onto the evaporator rear line assembly. Refer to Air Conditioning Line/Tube Connector Removal/Replacement Air Conditioning Line/Tube Connector Removal/Replacement.

13. Connect the refrigerant pressure sensor electrical connector.





14. Connect the front evaporator inlet line to the body retaining clip.

15. Install the intake manifold. Refer to Intake Manifold Replacement Intake Manifold Replacement.

16. Install the battery. Refer to Battery Replacement (LS3) Removal and ReplacementBattery Replacement (LS7 or LS9) Removal and Replacement.

17. Evacuate and recharge the A/C system. Refer to Refrigerant Recovery and Recharging Refrigerant Recovery and Recharging.

18. Leak test the fittings of the component using J 39400-A - Halogen Leak Detector.