Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET1999ASTRO VAN 2WD V6-4.3L VIN WREPAIR AND DIAGNOSISHEATING AND AIR CONDITIONINGCOMPRESSOR HVACDESCRIPTION AND OPERATIONCOMPRESSOR DESCRIPTION
1999 Chevrolet Astro Van 2WD V6-4.3L VIN W
Compressor Description
1999 Chevrolet Astro Van 2WD V6-4.3L VIN WSECTION Compressor Description
Compressor Description
The Harrison HT-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 is energized. When 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 one unit in order to drive the compressor shaft.
All the replacement compressors from the service parts have 240 ml (8 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. Then, fill the new compressor with new oil in the same amount that was drained from the old compressor.
The Harrison HT-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 is energized. When 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 one unit in order to drive the compressor shaft.
All the replacement compressors from the service parts have 240 ml (8 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. Then, fill the new compressor with new oil in the same amount that was drained from the old compressor.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.