Notes on Compressor Overhaul

Fig. 13 Delco Air A-6 axial compressor exploded view:

When overhauling compressor, remove only components that preliminary diagnosis indicates need service. Refer to Fig. 13 for parts location and nomenclature.

Some service operations can be performed without disturbing internal mechanism or completely removing compressor from car. Among them are replacement of clutch plate and hub assembly, pulley and bearing assembly, and pulley bearing.

Clutch coil and housing assembly may also be replaced without removing compressor, after clutch and pulley parts have been removed. It is not necessary to disturb shaft seal.

Shaft seal can be replaced only by removing compressor from vehicle and removing clutch plate and hub assembly to gain access to seal.

Although certain service operations can be performed without completely removing compressor from car, operations described are based on bench overhaul with compressor removed from vehicle. They have been prepared in sequence in order of accessibility of components.

When a compressor is removed from vehicle for servicing, oil remaining in compressor should be drained and measured. The amount of oil should be noted for future reference and then discarded. The oil should then be replaced with same amount of new oil upon reassembly of compressor.