A/C Coupler O-ring: Service and Repair

REMOVAL PROCEDURE




1. Remove the air cleaner and duct assembly.
2. Recover the refrigerant. Refer to Refrigerant, A/C Recovery and Recharging.
3. For compression-style fittings; use a back-up wrench on the A/C refrigerant component (smaller size) fitting (2), then loosen the A/C refrigerant hose (larger size) fitting (1).
4. For banjo-style fittings; remove the bolt/nut retaining the A/C refrigerant hose to the A/C refrigerant component.

IMPORTANT: Cap or tape the open A/C refrigerant hose and the A/C refrigerant component immediately.

5. Disconnect the A/C refrigerant hose from the A/C refrigerant component, discard the O-ring seal and cap or tape the A/C refrigerant hose and the A/C refrigerant component to prevent contamination.

INSTALLATION PROCEDURE




1. Remove the cap or tape from the A/C refrigerant hose and the A/C refrigerant component.
2. Using a lint-free clean, dry cloth, carefully clean the sealing surfaces of the A/C refrigerant hose and the A/C refrigerant component.
3. For compression-style fittings; carefully slide the new O-ring seal (1) onto the A/C refrigerant hose until seated.

IMPORTANT: DO NOT allow any of the mineral base 525 Viscosity refrigerant oil on the new O-ring seal to enter the refrigerant system.

4. Lightly coat the new O-ring seal (1) with mineral base 525 Viscosity refrigerant oil.




5. For banjo-style fittings; carefully slide the new O-ring seal (1) onto the A/C refrigerant hose until seated.

IMPORTANT: DO NOT allow any of the mineral base 525 Viscosity refrigerant oil on the new O-ring seal to enter the refrigerant system.

Lightly coat the new O-ring seal (1) with mineral base 525 Viscosity refrigerant oil.
Leave a light coating of the refrigerant oil to remain on the A/C refrigerant hose in the area indicated (2) ONLY.




6. Install the A/C refrigerant hose to the A/C refrigerant component.
7. For compression-style fittings; use a back-up wrench on the A/C refrigerant component (smaller size) fitting (2), then tighten the A/C refrigerant hose (larger size) fitting (1) to specification.
8. For banjo-style fittings; install the bolt/nut retaining the A/C refrigerant component, then tighten to specification.
9. Evacuate and charge the refrigerant system. Refer to Refrigerant, A/C Recovery and Recharging.
10. Check the A/C refrigerant hose(s) to the A/C component(s) joints for leaks. Refer to Leak Testing. Testing and Inspection
11. Install the air cleaner and duct assembly.