Chevrolet Cobalt Service & Repair Manual: Refrigerant Line O-Ring, Replace
| Caution: Air conditioning R-134a
liquid refrigerant is capable of harming eyes or freezing skin. Always wear
safety goggles and avoid contact with liquid refrigerant. Failure to follow
these instructions may result in serious personal injury. |
| Caution: Air conditioning R-134a
refrigerant gas is capable of displacing the air required for breathing
in a confined space and can produce toxic gasses if burned at high temperatures.
Do not release a large quantity of R-134a gas within a confined space or
allow it to be exposed to a high temperature flame (such as a torch). Consult
the Material Safety Data Sheet for further information. Failure to follow
these instructions may result in serious personal injury or death. |
| Caution: Use extreme care and
observe all safety and service precautions related to the use of refrigerants
as outlined on refrigerant tank and on recovery and charging equipment.
Failure to follow these instructions may result in serious personal injury. |
| Any time air conditioning components
are removed the O-rings need to be replaced. |
| Do not reuse air conditioning
O-ring seals. |
Removal
| 1. |
Disassemble A/C refrigerant components,
as required. |
| 2. |
For compression style fittings, use
a back-up wrench on fitting (2) and loosen fitting nut (1), Fig.
1. |
| 3. |
For banjo style fittings, remove bolt
retaining banjo type fitting. |
| 4. |
Remove O-ring seal from A/C refrigerant
component. |
| 5. |
Inspect O-ring seal for signs of damage.
Inspect A/C refrigerant components for damage or burrs. |
| 6. |
Cap or tape A/C refrigerant components
immediately to prevent system contamination. |
|
Installation
| Do not allow any of the refrigerant
oil on new O-ring seal to enter refrigerant system. |
| Do not reuse O-ring seals. |
| 1. |
Inspect new O-ring seal for any sign
of cracks, cuts, or damage. |
| 2. |
Remove cap or tape from A/C refrigerant
components. |
| 3. |
Carefully clean sealing surfaces of
A/C refrigerant components using a lint free clean, dry cloth. |
| 4. |
Lightly coat new O-ring seal with refrigerant
oil. |
| 5. |
Carefully slide new O-ring seal (1)
onto A/C refrigerant component, Fig. 2. O-ring
seal must be fully seated. |
| 6. |
Assemble A/C components, as required. |
|
Fig. 1 Compression fitting nut removal
Fig. 2 A/C refrigerant component O-ring seal installation
Caution: Air conditioning R-134a
liquid refrigerant is capable of harming eyes or freezing skin. Always wear
safety goggles and avoid contact with liquid refrigerant. Failure to follow ...
1.
Evacuate system as outlined under "Refrigerant
Recovery" in "General Service" on main menu selection.
2.
Raise and ...
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