FD bearing replacement. - BMW Luxury Touring Community
 
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post #1 of 8 Old May 20th, 2014, 5:31 pm Thread Starter
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FD bearing replacement.

Just wondering from those who have done a few FDs what the average shim thickness is on the FD. I know this one was too tight and didn't have access to replacement shims but it lasted 66,000 miles the first time so not too concerned. Was shimmed at .030 MM.


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post #2 of 8 Old May 20th, 2014, 5:58 pm
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Re: FD bearing replacement.

I have done 43 FD's so far and the shims vary a lot in thickness.

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post #3 of 8 Old May 20th, 2014, 6:16 pm Thread Starter
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Re: FD bearing replacement.

Thanks Dave. BTW the gussets(?) made it. Nicely done. Now off to the welder.


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post #4 of 8 Old May 20th, 2014, 9:21 pm
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Re: FD bearing replacement.

I think your numbers are close to what I ended up with. Mine was over shimmed by almost double the required amount.
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post #5 of 8 Old May 20th, 2014, 11:03 pm
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Re: FD bearing replacement.

I just did mine last weekend. From the factory, there were three shims installed. Two .20mm and one .15mm. Using the dial gauge method only one .20mm shim was necessary. That's .35mm over preloaded. That's pretty poor quality control on BMW's part. Plus...the taper bearing was spinning on the spindle which ate away .15mm of the backlash shim.

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post #6 of 8 Old May 21st, 2014, 9:02 pm
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Re: FD bearing replacement.

Quote:
Originally Posted by FatStrat View Post
That's .35mm over preloaded. Plus...the taper bearing was spinning on the spindle which ate away .15mm of the backlash shim.
That meas it self adjusted to only .20 mm of overload

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post #7 of 8 Old May 21st, 2014, 9:14 pm
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Re: FD bearing replacement.

Quote:
Originally Posted by deanwoolsey View Post
Just wondering from those who have done a few FDs what the average shim thickness is on the FD. I know this one was too tight and didn't have access to replacement shims but it lasted 66,000 miles the first time so not too concerned. Was shimmed at .030 MM.

been a couple years now... don't remember exactly... but I ended up not using one small shim... it was a .010 or .015

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post #8 of 8 Old May 23rd, 2014, 6:50 am
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Re: FD bearing replacement.

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Originally Posted by jzeiler View Post
That meas it self adjusted to only .20 mm of overload
Dang.....I should have waited....it was repairing itself! If the taper bearing would have welded itself to the spindle.....

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