Re: OT - Another call for GMC experts AC Comp Clut

Posted by Bob on October 02, 2005 at 09:26:22 from (64.21.249.40):

In Reply to: OT - Another call for GMC experts AC Comp Clutch posted by Kirk Grau on October 02, 2005 at 08:34:39:

If the pulley remains locked up with the AC switched off, likely just the bearing in the clutch pulley has seized. Don't run the engine any more, or you'll finish off the clutch!

If the compressor has been working, and is not leaking refrigerant, it may be worth repairing, IF you can do it yourself, or have someone with the tools that will do it reasonably.

There is a nut on the compressor shaft, down in the recess at the center of the pulley that must be removed. Then, a special puller is screwed in the clutch hub, and the hub gets pulled off. That will expose the snap ring that holds the clutch pulley bearing to the compressor's "snout". Remove the snap ring. Usually, the bearing and pulley will come off reasonably easy. Otherwise, there is a special puller for that, to. (You CANNOT remove the clutch hub without the proper puller, and NEVER try to pull the pulley off by pushing agains the compressor shaft, or pound on the compressor shaft, as you will destroy the shaft see, and lose the refrigerant.)

Once you have the pulley off, you will find that the pulley is "staked" around the periphery of the bearing, to hold it in place.

You can buy a new or rebuilt pulley, with the bearing in place, or if you're CHEAP like me, carefully use a Dremel tool to grind off the "staked" metal and press out the bearing, and press in a new one, using high strength LockTite bearing retaining compound.

The bearing will not be listed for that application, but is the same part number as a late 50's to early 80's GM A-6 compressor clutch bearing.

Cost to repair, if you can borrow the tools , or get cheap help, about $20.00 for the bearing, or as you have found out, closer to $100, if you buy the complete clutch pulley.

Follow Ups:

• Re: OT - Another call for GMC experts AC Comp Clut Kirk Grau 09:46:56 10/02/05 (1)
  • Re: OT - Another call for GMC experts AC Comp Clut Glen in TX 10:49:29 10/02/05 (0)

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