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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 MANUALSCHEVROLET1990LUMINA APV V6-191 3.1LREPAIR AND DIAGNOSISHEATING AND AIR CONDITIONINGCOMPRESSOR HVACCOMPRESSOR CLUTCH COILSERVICE AND REPAIR
1990 Chevrolet Lumina APV V6-191 3.1L
Compressor Clutch Coil: Service and Repair
1990 Chevrolet Lumina APV V6-191 3.1LSECTION Service and Repair
Remove or Disconnect
1. Perform Steps 1 through 4 of "Clutch Rotor and/or Bearings" removal procedure. Mark clutch coil terminal location on compressor front head.

2. Install J-33023 puller pilot on front head of compressor. Also install J-8433-1 puller crossbar with J-33025 puller legs as shown in illustration.
3. Tighten J-8433-3 forcing screw against the pulley pilot to remove the clutch coil.
Install or Connect
1. Place the clutch coil assembly on the front head with the terminals positioned at the "marked location.
2. Place the J-33024 clutch coil installer over the internal opening of the clutch coil housing an align installer with the compressor front head.

3. Center the J-8433-1 puller crossbar in the countersunk center hole of the J-33024 clutch co installer. Install the J-34992 through bolts an washers through the crossbar slots and thread them into the holding fixture J-34992 to full fixture thickness.
4. Turn the center forcing screw of the J-8433-1 puller crossbar to force the clutch coil onto the front head. Be sure clutch coil and J-33024 installer stay "in-line" during installation.

5. When coil is fully seated on the front head, us a 1/8" diameter drift punch and stake the front head at three (3) places 120° apart, to ensure clutch coil remaining in position.

^ Stake size should be only one half the area of the punch tip and only approximately 028-0.35mm (0.010-0.015") deep.
6. Install rotor and bearing assembly and the clutch plate and hub assembly according as described previously.
1. Perform Steps 1 through 4 of "Clutch Rotor and/or Bearings" removal procedure. Mark clutch coil terminal location on compressor front head.
Clutch Coil Assembly Removal:
2. Install J-33023 puller pilot on front head of compressor. Also install J-8433-1 puller crossbar with J-33025 puller legs as shown in illustration.
3. Tighten J-8433-3 forcing screw against the pulley pilot to remove the clutch coil.
Install or Connect
1. Place the clutch coil assembly on the front head with the terminals positioned at the "marked location.
2. Place the J-33024 clutch coil installer over the internal opening of the clutch coil housing an align installer with the compressor front head.
Installing Clutch Coil Assembly:
3. Center the J-8433-1 puller crossbar in the countersunk center hole of the J-33024 clutch co installer. Install the J-34992 through bolts an washers through the crossbar slots and thread them into the holding fixture J-34992 to full fixture thickness.
4. Turn the center forcing screw of the J-8433-1 puller crossbar to force the clutch coil onto the front head. Be sure clutch coil and J-33024 installer stay "in-line" during installation.
Staking Clutch Coil To Front Head:
5. When coil is fully seated on the front head, us a 1/8" diameter drift punch and stake the front head at three (3) places 120° apart, to ensure clutch coil remaining in position.
Details Of Stakes In Front Head For Clutch Coil:
^ Stake size should be only one half the area of the punch tip and only approximately 028-0.35mm (0.010-0.015") deep.
6. Install rotor and bearing assembly and the clutch plate and hub assembly according as described previously.
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:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.