Refrigeration System Description: Compressor

WARNING: This page is about a different car, the 1999 GMC Sierra and 1999 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.

The Harrison HU-6 compressor is belt-driven by the engine crankshaft through the compressor clutch pulley. The compressor pulley rotates freely, without turning the compressor shaft, until an electromagnetic clutch coil energizes. When the applied voltage energizes the clutch coil, a clutch plate and hub assembly move rearward toward the compressor clutch pulley. The magnetic force locks the clutch plate and the compressor clutch pulley together as 1 unit in order to drive the compressor shaft.

All the replacement compressors from the service parts have 120 ml (4 fl oz) of oil in the crankcase. When replacing the compressors, drain the oil from the old compressor into an approved container. Note the amount drained. Drain the oil from the new compressor. Fill the new compressor with new oil in the same amount that you drained from the old compressor.