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HOMESERVICE MANUALSCHEVROLET1999ASTRO VAN 2WD V6-4.3L VIN WREPAIR AND DIAGNOSISHEATING AND AIR CONDITIONINGCOMPRESSOR HVACCOMPRESSOR CLUTCH HUBSERVICE AND REPAIR
1999 Chevrolet Astro Van 2WD V6-4.3L VIN W
Compressor Clutch Hub: Service and Repair
1999 Chevrolet Astro Van 2WD V6-4.3L VIN WSECTION Service and Repair
Clutch Plate and Hub Assembly Replacement (HT6/HD6)
REMOVAL PROCEDURE
TOOLS REQUIRED
^ J 34992 Compressor Holding Fixture
^ J 33013-B Clutch Plate and Hub Assembly Installer-Remover
1. Clamp the J 34992 in a vise.
2. Use thumb screws in order to attach the compressor to the holding fixture.
NOTE: Do not drive or pound on the clutch hub or shaft. Internal damage to the compressor may result. The forcing tip on the J 33013-B remover/installer center screw must be flat or the end of the shaft/axial plate assembly will be damaged.
3. Ensure that the center screw forces the tip to thrust against the end of the shaft.
4. Thread the J 33013-B into the hub.
5. While holding the body of J 33013-B of the remover with a wrench, turn the center screw into the remover body in order to remove the clutch plate and hub assembly (1).
6. Remove the shaft key. Retain the shaft key for reassembly.
INSTALLATION PROCEDURE
TOOLS REQUIRED
J 33013-B Clutch Plate and Hub Assembly Installer-Remover
1. Install the shaft key (4) into the hub key groove.
Allow the key to project approximately 3.2 mm (0.125 in) out of the keyway (3).
The shaft key curves slightly in order to provide an interference fit in the hub key groove.
2. Clean the following components:
^ The clutch plate
^ The clutch rotor (2)
3. Align the shaft key (4) with the shaft keyway (3).
4. Place the clutch plate and the hub assembly (1) onto the compressor shaft.
5. Remove the forcing tip on the J 33013-B.
6. Reverse the body direction on the center screw.
7. Install the J 33013-B with the bearing.
8. Back off the body of the J 33013-B as necessary in order to permit the center screw to be threaded onto the end of the compressor shaft.
9. Hold the center screw with a wrench.
10. Tighten the hex portion of the J 33013-B body in order to press the hub onto the shaft,
11. Tighten the body several turns.
12. Remove the installer. Ensure that the shaft key remains in place in the keyway.
13. Install the clutch plate and hub assembly to the final position.
Ensure that the air gap (2) between frictional surfaces of the clutch plate and clutch rotor measures within 0.50-0.76 mm (0.206.30 in).
14. Remove the J 33013-B.
15. Verify proper positioning of the shaft key. Ensure that the shaft key is even with or slightly above the clutch hub.
16. Spin the pulley rotor by hand in order to verify that the rotor does not rub against the clutch drive plate.
REMOVAL PROCEDURE
TOOLS REQUIRED
^ J 34992 Compressor Holding Fixture
^ J 33013-B Clutch Plate and Hub Assembly Installer-Remover
1. Clamp the J 34992 in a vise.
2. Use thumb screws in order to attach the compressor to the holding fixture.
NOTE: Do not drive or pound on the clutch hub or shaft. Internal damage to the compressor may result. The forcing tip on the J 33013-B remover/installer center screw must be flat or the end of the shaft/axial plate assembly will be damaged.
3. Ensure that the center screw forces the tip to thrust against the end of the shaft.
4. Thread the J 33013-B into the hub.
5. While holding the body of J 33013-B of the remover with a wrench, turn the center screw into the remover body in order to remove the clutch plate and hub assembly (1).
6. Remove the shaft key. Retain the shaft key for reassembly.
INSTALLATION PROCEDURE
TOOLS REQUIRED
J 33013-B Clutch Plate and Hub Assembly Installer-Remover
1. Install the shaft key (4) into the hub key groove.
Allow the key to project approximately 3.2 mm (0.125 in) out of the keyway (3).
The shaft key curves slightly in order to provide an interference fit in the hub key groove.
2. Clean the following components:
^ The clutch plate
^ The clutch rotor (2)
3. Align the shaft key (4) with the shaft keyway (3).
4. Place the clutch plate and the hub assembly (1) onto the compressor shaft.
5. Remove the forcing tip on the J 33013-B.
6. Reverse the body direction on the center screw.
7. Install the J 33013-B with the bearing.
8. Back off the body of the J 33013-B as necessary in order to permit the center screw to be threaded onto the end of the compressor shaft.
9. Hold the center screw with a wrench.
10. Tighten the hex portion of the J 33013-B body in order to press the hub onto the shaft,
11. Tighten the body several turns.
12. Remove the installer. Ensure that the shaft key remains in place in the keyway.
13. Install the clutch plate and hub assembly to the final position.
Ensure that the air gap (2) between frictional surfaces of the clutch plate and clutch rotor measures within 0.50-0.76 mm (0.206.30 in).
14. Remove the J 33013-B.
15. Verify proper positioning of the shaft key. Ensure that the shaft key is even with or slightly above the clutch hub.
16. Spin the pulley rotor by hand in order to verify that the rotor does not rub against the clutch drive plate.
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.