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GM Clutch Adjustment (again)

wm8728 on Wed July 29, 2009 12:37 PM User is offline

Year: 1994
Make: Chevy
Model: Suburban
Engine Size: 5.7L
Refrigerant Type: R-134a

re: GM compressor clutch adjustment

If I understand correctly, the nut on the hub may have come loose (or there is another reason for a wide gap), thus my gap is now about .125". As a result, it only engages infrequently, but engages every time when tapped with a wooden rod. Do I simply tighten the hub nut to shore up the hub and close the gap, or do I need the special tool to remove, look for shims, maybe reshim, and retighten ?

Biker Bil

GM Tech on Wed July 29, 2009 12:53 PM User is offline

No shims in this press fit design- "borrow" clutch tool from Autozone- remove clutch nut- apoply tool- adjust clutch to .020" see link below-

Note: the nut is only there for looks- keeps dirt out of threads- will NOT adjust clutch for you- it bottoms on end of shaft, not clutch driver.-- it was discontinued on later models.....

clutch tool from Autozone link

The number one A/C diagnostic tool there is- is to know how much refrigerant is in the system- this can only be done by recovering and weighing the refrigerant!!
Just a thought.... 65% of A/C failures in my 3200 car diagnostic database (GM vehicles) are due to loss of refrigerant due to a leak......

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