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Stiff U-joints

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Old Feb 25, 2013 | 08:29 PM
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1987i6F150's Avatar
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Default Stiff U-joints

Hi all,

So, I recently replaced my driveshaft, but kept my original slip yoke. Although the end caps on the u-joint that connect to the slip yoke are the correct size, they went in very stubbornly. Once I had pounded them into submission, they were about three times as stiff as all the other end caps on the driveline. I haven't greased the u-joint yet, but it looked like it came greased. I'm still planning to grease it, but for now, is this anything to be concerned about or am I just being paranoid?
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Old Feb 25, 2013 | 08:42 PM
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If they are stiff just bang on the housings until they are loose. Before I put the caps through I usually rub the housing with power steering or transmission fluid. Is there a zerk fitting.
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Old Feb 25, 2013 | 09:10 PM
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But if you have already installed I would take her off and get it right. They move for a reason and you don't want to have driveshaft failure on the road
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Old Feb 25, 2013 | 09:14 PM
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mine were hard to move because of the grease. as far as i know its normal, aslong as you dont need like a pry bar to barely move them.
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Old Feb 25, 2013 | 09:20 PM
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li'l red95's Avatar
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That happens a lot when replacing u joints the ears on the drive shaft are probably a bit crooked Take a C clamp and squeeze it just a tad then release it. You might have to do it a few times but it usually works. If not you may just need new u joints.
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Old Feb 26, 2013 | 07:40 AM
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1987i6F150's Avatar
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It does have a zerk fitting, and it is a brand new u-joint and driveshaft, although the slip yoke is old. Maybe I'll give the C-clamp a try. Maybe I'll just grease and go :P After all, the working angle is very low, and it still definitely moved without requiring a pry bar.

Thanks for the input guys!
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Old Feb 27, 2013 | 03:07 AM
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Sounds like its crooked. That c clamp trick might work. When properly seated it should move freely. It is a roller bearings. If it doesn't loosen pull it and try again. You may have a bearing stuck. It doesn't take much for the shaft to reduce the new bearings to dust if they are in wrong.
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Old Feb 27, 2013 | 07:16 AM
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Originally Posted by 1987i6F150
Once I had pounded them into submission

hmm I'm sure there's no issues there....

If you have to beat them in you're doing it wrong
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Old Feb 27, 2013 | 08:25 PM
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Ok. Today I drove it some, then took the shaft off again to have a look. It seems a little worse, although I didn't actually disassemble the u-joint. I'm pretty sure when I took out the old u-joint, I bent the slip yoke in some way (I had to wail on it then too).

Could it hurt the driveline if I just ride out the u-joint until it shows signs of wear, and then have the slip yoke re-manufactured and replace the u-joint?

I'd rather give it to professionals since it seems to me there are a ton of ways the yoke could be mis-aligning the end caps.
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