Expansion Block/Orifice Tube: Service and Repair

Air Conditioning Evaporator Thermal Expansion Valve Replacement

Special Tools

GE 39400-A - Halogen Leak Detector

For equivalent regional tools, refer to Special Tools Heating, Ventilation, and Air Conditioning.

Removal Procedure

1. Recover the refrigerant. Refer to Refrigerant Recovery and Recharging Refrigerant Recovery and Recharging.

2. Unclip brake pipes.





3. Remove the air conditioning evaporator hose bolt from the air conditioning evaporator thermal expansion valve.

4. Remove the air conditioning evaporator hose (1) from air conditioning evaporator thermal expansion valve.

5. Remove the 2 air conditioning evaporator thermal expansion valve bolts (2).

6. Remove the air conditioning evaporator thermal expansion valve (3).

7. Remove and DISCARD the seals from the air conditioning evaporator hose and from the evaporator core pipes.

Installation Procedure





1. Install NEW system seals. Refer to Air Conditioning System Seal Replacement Air Conditioning System Seal Replacement.

Caution:
Refer to Fastener Caution Fastener Caution.

2. Install air conditioning evaporator thermal expansion valve (3) and the 2 air conditioning evaporator thermal expansion valve bolts (2) and tighten to 15 Nm (11 lb ft).

3. Install air conditioning evaporator hose (1) to air conditioning evaporator thermal expansion valve (3).

Install and tighten hose bolt to 19 Nm (14 lb ft).

4. Install brake pipes.

5. Evacuate and charge the refrigerant system. Refer to Refrigerant Recovery and Recharging Refrigerant Recovery and Recharging.

6. Leak test the fittings using the GE 39400-A - detector.