A-590/C-171 Compressor
A-590 & C-171 CompressorCompressor oil level need only be checked when there is evidence of oil loss from the system as in the case of a broken line, leaking fitting or component, defective compressor seal or collision damage to system. A wet, shiny surface around a leak point is evidence of oil loss.
1. Discharge system as outlined, and repair leak as needed.
2. Disconnect suction and discharge lines from compressor, then remove compressor and clutch assembly from vehicle.
3. Invert compressor and drain oil through suction and discharge ports.
4. On Dakota and front wheel drive vans and wagons, add 3 ounces of new refrigeration oil. On rear wheel drive vans and forward control models, add 7 ounces of new refrigeration oil. On all except above, add 5 ounces of new refrigeration oil. On all models, add oil to compressor through suction port.
5. Reinstall compressor using new gaskets on refrigerant line fittings, then evacuate and recharge system.