Hombre S Regular Cab 4WD V6-4.3L (1999)
High Pressure Safety Valve HVAC: Service and Repair
Removal Procedure
Tools Required
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J 39500 R-134a A/C Refrigerant Recovery, Recycling and Recharging System (ACR4)
1. Recover the refrigerant using the J 39500.
2. Remove the old pressure relief valve (5).
Installation Procedure
Tools Required
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J 39500 R-134a A/C Refrigerant Recovery, Recycling and Recharging System (ACR4)
1. Clean the valve seat area on the rear head.
2. Lubricate the O-ring of the new pressure relief valve (5) and the O-ring assembly using new 525 viscosity refrigerant oil.
NOTE: Refer to Fastener Note in Service Precautions.
3. Install the new pressure relief valve (5).
Tighten
Tighten the new valve to 9.0 N.m (6.1 lb ft).
4. Evacuate and recharge the system using the J 39500.
5. Leak test the system.
