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 MANUALSCHEVROLET1985CAVALIER BASE, 4D SEDAN, 2.8 W, STANDARDREPAIR AND DIAGNOSISHEATING, VENTILATION & A/C (HVAC)GENERAL SERVICINGA/C COMPRESSOR OVERHAUL - R-4 WITH 6-POLE CLUTCHINTRODUCTION
1985 Chevrolet Cavalier Base, 4D Sedan, 2.8 W, Standard
A/C Compressor Overhaul - R-4 With 6-Pole Clutch: Introduction
1985 Chevrolet Cavalier Base, 4D Sedan, 2.8 W, StandardSECTION Introduction
NOTE:
This article covers seal, pulley bearing, and clutch coil replacement procedures for Harrison R-4 4-cylinder compressor with 6-pole clutch. R-4 compressors with "V" or Poly-Groove drives are covered in a separate article.
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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.