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Vibration from driveshaft?

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Old May 14, 2011 | 01:24 PM
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Vibration from driveshaft?
Just installed a new carrier bearing and pinion seal. Replaced everything and now I'm having a vibration starting around 20 mph and faster. I did jack it up and watch the underside while someone accelerated for me and it appears that the driveshaft has a slight shake to it. What would cause this and any suggestions on fixing it?
 
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Old May 14, 2011 | 01:33 PM
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Did you reinstall the shaft in phase? i.e. yokes are in alignment.
 
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Old May 14, 2011 | 01:55 PM
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As far as I know, I marked then before I took them off and replaced to the same position
 
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Old May 14, 2011 | 02:21 PM
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What if by chance I didn't line them up right, what can I do to correct this problem?
 
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Old May 14, 2011 | 03:04 PM
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all 3 yokes on a 2 pc. drive shaft have to be all inline
 
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Old May 14, 2011 | 04:59 PM
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I didn't pay attention to the front one, I know nothing. so now that I probably messed up the alignment, how do I go about fixing it?
 
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Old May 14, 2011 | 05:10 PM
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Just take it apart, again, (insert vulgarities here) and align the yokes so they're parallel to each other.
 
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Old May 14, 2011 | 06:07 PM
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I like how you make it sound so easy, I am new at this. Exactly how do you "align the yokes so they are parallel to each other?"
 
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Old May 14, 2011 | 06:11 PM
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You just turn the drive shaft 90 degrees (or until yokes are parallel).
 
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Old May 14, 2011 | 06:23 PM
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Oh, easy enough! Thanks man! I am learning a lot from everybody on this thing!
 
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Old May 14, 2011 | 06:27 PM
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Glad i could help.
 
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Old May 14, 2011 | 08:16 PM
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Well I did what you said, took it for a spin and man what a difference! Thanks a lot!
 
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Old May 14, 2011 | 09:39 PM
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It makes a big difference with the u-joints in phase, at least you'll never repeat that mistake.
 
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Old May 14, 2011 | 09:41 PM
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This is true! Never really thought that would matter, at least it was an easy fix!
 
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Old May 15, 2011 | 02:46 PM
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did you have to make the yokes facing the same towards each other or parallel from each other?
 
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