C 1500 Truck 2WD V8-5.3L VIN T (1999)
Refrigerant: Description and Operation
Compressor
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.
