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Home >> Chevy Truck >> 2002 >> Express 1/2 Ton Van V6-4.3L VIN W >> Repair and Diagnosis >> Heating and Air Conditioning >> High Pressure Safety Valve HVAC >> Service and Repair >> Compressor Pressure Relief Valve Replacement

Compressor Pressure Relief Valve Replacement

TOOLS REQUIRED
J 39400-A Halogen Leak Detector

REMOVAL PROCEDURE




1. Remove the engine cover.
2. Recover the refrigerant from the system. Refer to Refrigerant Recovery and Recharging.
3. Clean the valve seat area on the rear head.
4. Remove the pressure relief valve (1).

INSTALLATION PROCEDURE




1. Lubricate the O-ring of the new pressure relief valve (1) using new 525 viscosity refrigerant oil.

NOTE: Refer to Component Fastener Tightening Notice in Service Precautions.

2. Install the pressure relief valve (1).

Tighten
Tighten the pressure relief valve to 9 N.m (80 lb in).

3. Evacuate and recharge the refrigerant system. Refer to Refrigerant Recovery and Recharging.
4. Leak test the fitting(s) of the repaired or reinstalled component using the J 39400-A.
5. Install the engine cover.
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