Refrigerant Oil: Service and Repair
BALANCING COMPRESSOR OIL1. Remove the A/C compressor from the vehicle.
NOTE: During oil removal procedure condition of oil should be evaluated. Compressor oil never breaks down unless something is wrong with the compressor or A/C system. If one or more of the following conditions exist, replace compressor and receiver/dehydrator.
^ Color of oil is dark brown or black
^ There is a presence of foreign substances, metal fillings, etc. in oil
If receiver-dehydrator is not replaced damage to A/C compressor will occur.
2. Drain the oil into a clean graduated container.
3. Move the A/C compressor to different positions to remove all the oil possible.
4. Rotate the A/C compressor drive plate in both directions to remove the oil from the A/C compressor chambers.
5. Stop oil draining when the oil coming from the low and high side ports become only drops.
6. Measure and record oil removed from A/C compressor.
7. Discard removed oil as all new replacement (service) A/C compressors come with 120 cc (4.0 oz.) of PAG compressor oil installed.
8. Use the value recorded in Step 6 and perform the following formula:
Value recorded in Step 6-120 cc (4.0 oz.) = Value to be used in Step 9
IMPORTANT: Additional NEW Saturn PAG oil may be needed to obtain the amount of PAG oil required for the next step. Reference Saturn Part Catalog for correct PAG compressor oil recommendation.
9. If the value calculated in Step 8 is negative, remove that amount from the new compressor. If the value calculated in Step 8 is positive, add that amount of new PAG oil to the new compressor.
10. Install A/C compressor into vehicle.