C 2500 Truck 2WD V8-6.5L DSL Turbo VIN S (1997)
A/C Coupler O-ring: Service and Repair
Dual O-Ring Seals
Tool Required:
J 38042 Dual O-Ring Tube Separator
When servicing the dual O-ring joint, the following procedure should be followed:
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Completely recover refrigerant from system.
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Use J 38042 dual O-ring tube separator to separate the joint while loosing the female nut.
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Whenever a fitting joint is opened, replace the O-rings with new ones.
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Use a nonmetallic tool when removing O-rings to prevent the chance of damaging the seal surface.
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Avoid excessive stretching and twisting of replacement O-rings.
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Align the end forms for pilot-to-bore insertion, then push together completely.
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Application of a small amount of 525 viscosity refrigerant oil will ease insertion.
Important
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Dual O-ring fittings are different in size from standard A/C fitting O-rings.
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Dual O-ring fittings require that the aluminum nut be tightened to a torque of 24 Nm (18 lb ft).
Before installation, O-ring seals and fittings should be examined to make sure they have not been nicked or deformed. Replace nicked or deformed
parts to prevent refrigerant leakage.