Operation CHARM
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Chevrolet
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1992
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Suburban 1/2 Ton 4WD V8-350 5.7L
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Repair and Diagnosis
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Heating and Air Conditioning
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Compressor HVAC
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Service and Repair
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With HR100T/HR110T Compressor
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Major Compressor Repair Procedures
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Pressure Relief Valve
Pressure Relief Valve
The Pressure Relief Valve, located in the compressor rear head casting (Fig. 4). should only be replaced after recovering
refrigerant
. A new valve and O-ring coated with 525 viscosity
refrigerant oil
should be installed.