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PostPosted: Fri Oct 13, 2017 1:32 pm 
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Posts like an LG3
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Joined: Fri Aug 05, 2011 10:53 am
Posts: 324
Location: Margate, England.
Year and Trim: 1987 Oldsmobile Delta 88

1989 Buick Le Sabre
The bearing in the belt tensioner in my 1987 Delta 88 is noisy and has excessive play.
I can't go to the local junkyard and get another one, the nearest one is probably 3000 miles away! :)
I intend to remove the pulley and replace the bearing, it's worthwhile in my circumstances.

I'm guessing the pulley bolt is left hand thread?. I don't want to turn it the wrong way and break it. If it breaks going the right way, well that's too bad.

Thanks in anticipation,
Roger.


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PostPosted: Fri Oct 13, 2017 2:55 pm 
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Joined: Sun Aug 22, 2010 11:11 pm
Posts: 1588
Location: Ontario, Canada
Year and Trim: 2000 Bonniville SSEi L67
please inspect the pulley rotation direction under normal operation. the pulley should always spin in the fasten direction so you will apply force in the unfasten( opposite) direction.

so if the pulley is rotating clockwise, you will go counter clockwise

it gets weird when the pulley is rotating counter clockwise and you remove it by applying clockwise direction. which is counter intuitive cause that is usually the fasten direction but not in that specific pulley application

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past rides:
1996 SSEi
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PostPosted: Sat Oct 14, 2017 12:46 am 
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Posts like an LG3
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Joined: Fri Aug 05, 2011 10:53 am
Posts: 324
Location: Margate, England.
Year and Trim: 1987 Oldsmobile Delta 88

1989 Buick Le Sabre
The pulley does rotate counter clockwise.
I tried turning it clockwise but it was very tight.
Now I can go put a bigger wrench on it knowing I'm not making thins worse.

Thank you.

Roger.


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PostPosted: Sat Oct 14, 2017 9:27 am 
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Posts like an L67
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Joined: Sun Aug 22, 2010 11:11 pm
Posts: 1588
Location: Ontario, Canada
Year and Trim: 2000 Bonniville SSEi L67
OK, good luck, post back with progress.....later

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2000 SSEi
past rides:
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1992 GTP
1987 Grand Am


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PostPosted: Sat Oct 14, 2017 9:51 am 
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Joined: Wed May 21, 2008 11:47 pm
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Location: Philly
Year and Trim: 95 SLE
On old corroded bolts try tightening them first to break them, then loosen.

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PostPosted: Sun Oct 15, 2017 2:38 pm 
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Joined: Fri Aug 05, 2011 10:53 am
Posts: 324
Location: Margate, England.
Year and Trim: 1987 Oldsmobile Delta 88

1989 Buick Le Sabre
A bit of effort with a longer 18mm wrench and off it came. It is lh thread btw.
A sharp tap with a hammer and drift and out popped the bearing.
id - 17mm
od - 40mm
width - 12mm
So off to the local bearing supplier in the morning, or £1.73 (about $2.40) from ebay.

Roger.


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PostPosted: Wed Oct 18, 2017 9:05 am 
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Joined: Fri Aug 05, 2011 10:53 am
Posts: 324
Location: Margate, England.
Year and Trim: 1987 Oldsmobile Delta 88

1989 Buick Le Sabre
The new bearing arrived in the post today. £1.30 ($1.65) including shipping to my door. :2thumbup:
Ten minutes later I have silent running again.

A replacement pulley would have cost £7.32 + shipping and duties from Rock Auto.
I'm not complaining about their price, just pleased it was such a cheap and easy fix.

Roger.


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