Workshop Repair and Service Manuals GMC SIERRA
Articles

Air Conditioning O-Ring Seal Replacement

Rating:

Removal Procedure

Air Conditioning O-Ring Seal Replacement

Disassemble the A/C refrigerant components. Refer to theappropriate repair procedureFor compression style fittings use a back up wrench on thefitting (2) and loosen the fitting nut (1).For banjo style fittings remove the bolt retaining the banjotype fitting.Remove the O-ring seal from the A/C refrigerantcomponent.Inspect the O-ring seal for signs of damage to help determinethe root cause of the failure.Inspect the A/C refrigerant components for damage or burrs.Repair if necessary.

Important:Cap or tape the open A/C refrigerant components immediatelyto prevent system contamination.

Cap or tape the A/C refrigerant components.Discard the O-ring seal.Installation ProcedureInspect the new O-ring seal for any sign or cracks, cuts, ordamage. Replace if necessary.Remove the cap or tape from the A/C refrigerantcomponents.Using a lint-free clean, dry cloth, carefully clean thesealing surfaces of the A/C refrigerant components.

Important:DO NOT allow any of the mineral base 525-viscosityrefrigerant oil on the new O-ring seal to enter the refrigerantsystem.

Lightly coat the new O-ring seal with mineral base525-viscosity refrigerant oil.

Important:DO NOT reuse O-ring seals.

Carefully slide the new O-ring seal onto the A/C refrigerantcomponent.

Air Conditioning O-Ring Seal Replacement

The O-ring seal must be fully seated.

Air Conditioning O-Ring Seal Replacement

Assemble the A/C components.

Refer to the appropriate repair procedure.

For compression style fittings use a back up wrench on thefitting (2) and tighten the fitting nut (1) tospecification.For banjo style fittings install the bolt retaining the banjotype fitting and tighten to specification.
Instrument Panel Outer Air Outlet Replacement - Left Side (without RPO SLT)     Instrument Panel Outer Air Outlet Replacement - Left Side Callout Component Name 1 Instrument Panel Trim Plate Procedure Refer toInstrument Panel Trim Plate Replacement 2 Instrument Panel Air Outlet...
Compressor Clutch Plate Hub Assembly Replacement Compressor Compressor Clutch     Compressor Clutch Plate/Hub Assembly Replacement Callout Component Name Preliminary ProcedureRemove the air conditioning compressor belt. Refer toAir Conditioning Compressor Belt Replacement.Remove the air...
Air Conditioning Refrigerant Service Valve Core Replacement     Air Conditioning Refrigerant Service Valve Core Replacement Callout Component Name Preliminary ProcedureRemove the service port cap.Recover the refrigerant. Refer toRefrigerant Recovery and Recharging. 1 Air...
Flushing (HP2)     Special ToolsJ 41447 Leak Detection DyeJ 42220 Universal 12V Leak Detection LampJ 43600 ACR 2000 Air Conditioning Service CenterJ 45268 Flush Adapter Kit Important:Flushing with the ACR 2000 is not intended to remove metal...
Instrument Panel Outer Air Outlet Replacement - Left Side (with RPO SLT)     Instrument Panel Outer Air Outlet Replacement - Left Side Callout Component Name 1 Instrument Panel Air Outlet Assembly– Left Tip:Use a flat-bladed plastic trim tool to release theretainer clip on the right side...
Air Conditioning Evaporator Tube Replacement (Non-HP2) Evaporator     Special Tools J-39400-A Halogen Leak Detector Removal ProcedureRecover the refrigerant. Refer toRefrigerant Recovery and Recharging.Remove the upper radiator air baffle and deflector. Refer toRadiator Air Upper Baffle and...