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Driveshaft Question

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Old May 13, 2015 | 11:13 AM
  #1  
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onadraw
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Driveshaft Question

My truck is new to me and has the 2 piece Drive Shaft with Center Bearing.

I'm experiencing a vibration at slow or idle speeds where it feels like I can feel each revolution of the shaft.

The previous owner told me he had the Center Bearing replaced in the last year and when I crawl under there it does look in good shape. But, as I look down the full length of the driveshaft assembly, it looks like the forward most yoke is out of time with the other yokes. It looks out of line by 15-20%.

Is this what it would look like if the assembly was installed 180 degrees off or does it sound like the driveshaft is assembled incorrectly?
 
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Old May 13, 2015 | 12:34 PM
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Below is a snippet of the 2 piece driveshaft from the 2001 F250 workshop manual.

Assuming they are showing the driveshaft as it would be assembled, you can see how the yokes would be aligned.



Just to clarify, part #9 is for an automatic trans, #8 for a manual.

Good luck, Tom
 
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Old May 14, 2015 | 06:59 AM
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Thanks f250mtnbkr.

Anybody have any other thoughts?
 
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Old May 15, 2015 | 10:05 PM
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Taking it apart tomorrow. Would really appreciate any other knowledgeable comments.
 
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Old May 16, 2015 | 02:40 PM
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With the hope that this might help others in the future, here is what I had.


So I took it apart and re-timed the front section following this diagram:


The initial test drive was good with no vibration at low speeds like I was experiencing.
 
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