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 MANUALSCHEVROLET1985S10/T10 BLAZER 4WD L4-151 2.5LREPAIR AND DIAGNOSISHEATING AND AIR CONDITIONINGCOMPRESSOR HVACSERVICE AND REPAIRCOMPRESSOR SHELLREMOVAL
1985 Chevrolet S10/T10 Blazer 4WD L4-151 2.5L
Removal
1985 Chevrolet S10/T10 Blazer 4WD L4-151 2.5LSECTION Removal
Clutch plate and hub assembly, clutch rotor and bearing assembly, and clutch coil and pulley rim must be removed in order to remove compressor shell. Compressor should be at room temperature to ease removal of steel shell from aluminum cylinder, which expands at greater rate than shell.
Fig. 23 Prying compressor shell retaining strap:
1. Pry shell retaining strap from cylinder and position strap to clear cylinder when shell is removed, Fig. 23.
2. Remove compressor holding fixture and reverse holding fixture step block protrusions engaging compressor shell. Install medium length bolts and thread into compressor cylinder until step of fixture protrusions contact shell. Ensure step protrusions do not overlap cylinder, but will pass both sides.
Fig. 24 Removing compressor shell:
3. Alternately tighten fixture bolts approximately 1/4 inch to push shell free of cylinder O-rings, Fig. 24, then remove shell.
Fig. 25 Removing valve plate retaining ring:
Fig. 26 Removing valve plate:
4. Remove valve plate retainer snap ring with tool J-4245, Fig. 25, then compressor valve plate, Fig. 26.
RENDER: 1.0x
NO RELATED
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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.