Compressor Pressure Relief Valve Replacement for Chevrolet Astro - 2WD 2000

1. Remove the engine cover. Refer to Engine Cover Replacement in Interior Trim.
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).

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

Notice: Refer to Component Fastener Tightening Notice in the Preface section.




2. Install the pressure relief valve (1).

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 .
5. Install the engine cover. Refer to Engine Cover Replacement in Interior Trim.