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.
SYS.OK|MANUAL.DBβ LIVE
HOMESERVICE MANUALSCHEVROLET1993ASTRO VAN M V6-262 4.3L VIN ZREPAIR AND DIAGNOSISHEATING AND AIR CONDITIONINGCOMPRESSOR HVACSERVICE AND REPAIRCOMPRESSOR REPAIRWITH SD-709/SD-7H15 COMPRESSORSHAFT SEAL
1993 Chevrolet Astro Van M V6-262 4.3L VIN Z
Shaft Seal
1993 Chevrolet Astro Van M V6-262 4.3L VIN ZSECTION Shaft Seal
Compressor Components:
Always replace the shaft seal assembly if it is disassembled. Never reuse any of the old parts.
To service the shaft seal without disassembling the clutch, perform steps 1 and 2 under "Clutch" and then proceed as follows.
Remove or Disconnect
Tools Required:
J 4245 internal Snap Ring Pliers
J 9553-01 Ring Remover
J 38468 Shaft Seal Remover and Installer
J 38479 Seal Seat Remover and Installer
1. Clutch shims (3) using J 9553-01 and a small screwdriver
2. Felt ring metal retainer (25).
Removing The Felt Ring Metal Retainer:
^ Insert the points J 4245 into the holes in the retainer and lift out).
3. Shaft seal seat snap ring.
Removing The Shaft Seal Seat:
4. Shaft seal seat (23) with J 38479.
5. Seal assembly
Removing The Seal Cage:
^ Press J 38468 against the seal spring and twist the tool until it engages the slots of the seal cage.
Install or Connect
Tools Required:
J 29640 Shaft Protector
J 38468 Shaft Seal Remover and Installer
J 38479 Seal Seat Remover and Installer
Clean
^ Seal cavity thoroughly.
a. Use R-12 refrigerant. Blow dry.
b. Wipe with a lint tree cloth and clean refrigerant oil. Blow dry.
1. J 29640 over the compressor shaft.
^ Do not touch the new seal cage (21).
2. Slots of J 38468 to the new seal cage (21).
Installing The Seal Cage:
3. Seal assembly into place in the compressor seal cavity.
^ Twist J 38468 to disengage it from the cage.
4. Clean refrigerant oil to the shaft seal seat.
5. Shaft seal seat (23) with J 38479.
6. Snap ring with the flat side toward the compressor.
7. Clutch spacer shims (3).
8. Use the originals if possible to give the same gap.
9. New felt ring.
^ If the clutch was not disassembled, reinstall the clutch front 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:
- 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.