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GMC Truck
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1991
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K 3500 Truck 4WD V8-379 6.2L DSL
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Repair and Diagnosis
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Heating and Air Conditioning
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High Pressure Safety Valve HVAC
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Service and Repair
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With R-4 Compressor
With R-4 Compressor
Compressor Component View:
Remove or Disconnect
1.
Valve (24).
2.
O-ring (23).
Install or Connect
1.
New O-ring (25).
-
New O-ring should be coated with 525 viscosity
refrigerant oil
.
2.
Valve (24)