A/C Coupler O-ring: Service and Repair
O- RING REPLACEMENTREMOVAL PROCEDURE
1. Remove the left front diagonal brace.
2. Remove the cross vehicle brace, if equipped.
3. Recover the refrigerant. Refer to Refrigerant Recovery and Recharging. See Refrigerant, A/C - Service and Repair.
4. 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).
5. 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.
6. 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 lubricate 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.
6. Lightly lubricate 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.
7. Install the A/C refrigerant hose to the A/C refrigerant component.
8. 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.
9. For banjo-style fittings; install the bolt/nut retaining the A/C refrigerant hose to the A/C refrigerant component, then tighten to specification.
10. Evacuate and charge the refrigerant system.
Refer to Refrigerant Recovery and Recharging.
11. Check the A/C refrigerant hose(s) to the A/C component(s) joints for leaks. Refer to Leak Testing. Testing and Inspection
12. Install the cross vehicle brace, If equipped.
13. Install the left front diagonal brace.