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Old 01-15-2002, 08:18 PM
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Join Date: Dec 2001
Location: Plattakill, NY
Posts: 137
Question Front pulley bolts

Hello I have a 1980 Euro W126 280SE with 128,000 on the clock. The bolts that hold on the front pulley to the harmonic balancer seem to have sheared off. I was lucky and it happened as I pulled into my street so I was able to limp home and park it in my driveway. I have put less than 800 miles on the car and have no history of work done on the car. What would cause this to happen? I only have one of the bolts and it is not complete. What length are they, and what grade should I use to replace it? I know they are 8mm 1.25 pitch. I am going to go to a commercial fastener supplier for them.

Thanks for any help.
1991 Mazda Miata 174000
1991 Subaru 189,000 Winter beater

got rid of:
1984 VW Vanagon 195,000
1976 350SE Euro 185,000 KM
1973 280SE 4.5 (boy do I regret that)
1980 280SE European W126 4 speed manual (miss it)
1989 BMW 735iL 119000 (good riddance)
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Old 01-15-2002, 08:36 PM
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Join Date: Mar 1999
Location: Suwanee, GA, USA
Posts: 4,712
I don't know the length, but if they sheared, they had to be loose. They don't rely on the bolt shaft to hold on the pulley, but rather the pinch action of the tightness of the bolt. I would get at least grade 10 on these/ I don't remember the length, but I think it is about 17mm or so.
Donnie Drummonds
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