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.
The O-ring seal must be fully seated.
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.