Alternator adjuster bolt with gear sprocket - Mercedes-Benz Forum

 
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post #1 of 4 (permalink) Old 02-08-2012, 11:25 AM Thread Starter
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Alternator adjuster bolt with gear sprocket

I'm working on this 1978 280E Alternator and there is a special bolt for adjusting the belt tension on the alternator. The gear/sprocket on one end of the bolt is stripped and trashed. Are these bolts available or do I have to go search a junk yard for a good one?

None of the alternator bolts have washers either. The pivot bolt has lots of slop too. Either the aftermarket alternator pivot hole is too big or there should be some bushings on the bolt. Anyone have a exploded view of the alternator and its hardware and bracket?
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post #2 of 4 (permalink) Old 02-08-2012, 11:51 AM Thread Starter
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Found a pic. Looks like I need one lock washer and one flat washer and a new star bolt. I see no washer on pivot bolt. Not sure where 46 and 149 go.
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post #3 of 4 (permalink) Old 02-15-2012, 07:36 PM
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A couple of years ago, I bought one from my MB dealer for a 280C with a M110.

Chuck Taylor
Falls Church VA
1998 SL500
1959 220S
1970 280SL
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post #4 of 4 (permalink) Old 06-16-2012, 06:59 PM
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I ran into this problem when I got my 1978 300D. The bolt was super hard to find and unfortunately my adjustment track was also stripped so I tighten it past a certain point. I'm hoping it's possible to upgrade to the newer and more common style with the "L" bolt, otherwise I will have to wrestle on a new belt that will have to be replaced again in a few months.

This is what you're looking for though: 1101500372 alternator Clamping Bolt...geared tension adjuster bolt
Based on the part number, I believe it originated in the W115 models.



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Last edited by kahlil88; 06-16-2012 at 07:01 PM.
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