Chevrolet Trax: Air conditioning compressor oil balancing

Draining Procedure

NOTE: Drain and measure as much of the refrigerant oil as possible from the rear head ports of the removed air conditioning compressor.

1. Before draining oil, position the compressor vertically, (clutch facing upwards) and let the air conditioning compressor sit for 1 minute.
2. Position the air conditioning compressor horizontally with the ports facing downward, rotate the clutch and shake the air conditioning compressor in order to remove as much oil from the air conditioning compressor as possible.
3. Drain the oil from both the suction and discharge ports of the removed air conditioning compressor into a clean, graduated container. Rotate the air conditioning compressor shaft to assist in draining the air conditioning compressor.

Fig. 1: Draining A/C Refrigerant Oil From Compressor

5. Measure and record the amount of oil drained from the removed air conditioning compressor. This measurement will be used during installation of the replacement air conditioning compressor. Inspect oil drained from removed air conditioning compressor. Refer to Air Conditioning Compressor Oil Diagnosis.
6. Properly discard the used refrigerant oil.

Balancing Procedure

NOTE: The refrigerant oil in the air conditioning system must be balanced during air conditioning compressor replacement.

1. Before installing the air conditioning compressor, the refrigerant oil will have to be fully drained.

Fig. 2: Replacing Measured Compressor Oil

2. Add back the same quantity of polyalkylene glycol (PAG) oil as drained from the removed air conditioning compressor. Refer to the amount of refrigerant oil recorded during the air conditioning compressor removal.

AIR CONDITIONING COMPRESSOR REPLACEMENT (LUJ, LUV)

Fig. 3: Air Conditioning Compressor (LUJ, LUV)

Air Conditioning Compressor Replacement (LUJ, LUV)

READ NEXT: