Operation CHARM: Car repair manuals for everyone.

Vehicle Damage Warnings

SERVICE PRECAUTIONS
1. Never open or loosen a connection before recovering the system refrigerant using an approved recovery unit.
2. When loosening a connection, if any residual pressure is evident allow it to be recovered, using an approved recovery unit, before opening the fitting.
3. A system which has been opened to replace a component or one which has discharged through leakage must be evacuated before charging.
4. Immediately after disconnecting a component from the system, seal the open fittings with a cap or plug.
5. Before disconnecting a component from the system, clean the outside of the fittings thoroughly.
6. Do not remove the sealing caps from a replacement component until ready to install.
7. Refrigerant oil will absorb moisture from the atmosphere if left uncapped. Do not open an oil container until ready to use and install the cap immediately after using. Store the oil only in a clean moisture free container.
8. Before connecting an open fitting always install a new O-ring seal. Coat the fitting and O-ring seal with refrigerant oil before connecting.
9. When installing a refrigerant line avoid sharp bends. Position the line away from the exhaust system or any sharp edges which may chafe the line.
10. Tighten the fittings only to the specified torque. Do not overtighten.
11. When disconnecting a fitting use a wrench on both halves of the fitting to prevent twisting of the refrigerant lines or tubes.
12. Do not open a refrigerant system or uncap a replacement component unless it is as close as possible to room temperature. This will prevent condensation from forming inside of a component which is cooler than the surrounding air.
13. Keep the service tools and the work area clean. Contamination of a refrigerant system through careless work habits must be avoided.
14. Whenever components in the engine compartment or the instrument panel areas are being serviced, the battery ground cable must be disconnected to eliminate the possibility of electrical shorts, burned-up wiring, and dangerous fires. Extreme care must be exercised when performing electrical tests where the battery must be connected to operate the system.