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Old 03-19-2011
mbrund's Avatar
mbrund mbrund is offline
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Default blower assy drive/rear alternator drive

I am trying to locate a horrible sounding noise in the engine compartment. Of course I have time this weekend to search for it, and it won't happen. What else is new. The noise sounds like a roller bearing cage failure, or a stuck roller when it decides to rear its ugly head.

However while looking for it, I ripped the bedroom floor to get to the rear of the engine and checked the alternator belts while there. They were over tight, so I went to loosen the tension, and noticed that the assy. drive that mounts to the front of the blower drive as about 1/8" slop in the rotation of the pulley. The pulley is tight, so its in the assy. drive.

What is acceptable movement in this pulley?

I would assume none, or some thing like .xxx, but not an 1/8".

Anyone every worked on that assembly that can give advice?

Its a 1992 8v92
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1992 Bluebird WB40 (formerly owned)
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Old 03-19-2011
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Randy Dupree Randy Dupree is offline
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They do have plenty of slop,i think your OK.
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Old 03-19-2011
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mbrund mbrund is offline
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Quote:
Originally Posted by Randy Dupree View Post
They do have plenty of slop,i think your OK.
Yeap, took it apart because the sealed bearing in the accessory drive sounded a little rough. When I got it off, the bearing does have a rough spot in it, so replacing it. About fainted when I found the price for that little bearing was $40, with a list over $70.

That slop comes from the fact that the accessory drive attachs to the blower drive via a fiber disc. That disc allows the slop. I was not able to find that detail in the 8V92 service manual that I have, but figured it out once I pulled the unit apart

So replacing the bearing, the seal which was leaking, and the gasket. Still have not found out where the mistery sound is coming from. I am sure it will rare its ugly head again some day. Hopefully it will be something easy to resolve.
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