new U joint loose after install - Defender Source
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  #1  
Old September 21st, 2009, 09:11 PM
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steve
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new U joint loose after install

Installed new u-joints (spicer 153x) in the rear shaft on the 110 today. All went fine except on the pinion end (of the yoke) the u-joint is loose. the new u-joint just barely moves (ticks), but it feels like the one I was replacing.
Seems like the yoke stretched... just a tad. Teh clips are in snug on both ends

Do you think I should:
A) put it back in and try not to think about it
B) take it back apart and give it a couple wacks with the 8 pound
C) take it to a drive line shop and spend some $
D) order a new yoke from tom woods

This seems abnormal. Do you think I am maxing out the prop shaft on full drop (OME and 2 in lower shock mounts, nothing fancy)? It is a custom propshaft since the entire drive train is 2in back.

so:
E) get a new drive shaft
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  #2  
Old September 21st, 2009, 09:16 PM
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Scott
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I would take it back out and make sure that they did not give you the wrong u-joint.
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  #3  
Old September 21st, 2009, 09:18 PM
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steve
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Same as was in previously. I compared before I installed the new ones and they were the same size.

Looks to fit fine. Clips barely go in, just as it should be. Just a slight click when it is all in.

also, the old ujoint was difficult to remove
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  #4  
Old September 22nd, 2009, 12:31 AM
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Yoke is screwed.
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  #5  
Old September 22nd, 2009, 12:38 AM
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steve
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Ron, you think it is from wear or a geometry issue?

If its wear I'm going to just get a new yoke.

thanks for the input.
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  #6  
Old September 22nd, 2009, 01:54 AM
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Does your slip joint move easily? I have seen them seize up partially and lead to this. The over extension of the prop shaft would lead it to seperate, although since yours is custom, that may not be the case.
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Old September 22nd, 2009, 02:23 AM
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steve
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Slip joint seems to be AOK. Spline wear is not evident.

I did notice that the two yokes have different tolerances in u-joint angle. By that I mean that you can get more degrees out of one yoke than the other, with the limiting factor being the ujoint fowling on one side. It may be happening while going at speed over larger bumps.

I think I am going to take the yoke to local shop and see what they say. If they quote expensive I'll consider a tom woods.

I remember reading on here about $370 for a 110 DC shaft? is that about right?
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Old September 22nd, 2009, 04:13 AM
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Quote:
Originally Posted by D90user
Slip joint seems to be AOK. Spline wear is not evident.

I did notice that the two yokes have different tolerances in u-joint angle. By that I mean that you can get more degrees out of one yoke than the other, with the limiting factor being the ujoint fowling on one side. It may be happening while going at speed over larger bumps.

I think I am going to take the yoke to local shop and see what they say. If they quote expensive I'll consider a tom woods.

I remember reading on here about $370 for a 110 DC shaft? is that about right?
Don't know. I run my junk stock now adays.
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  #9  
Old September 22nd, 2009, 08:39 AM
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Tom Rowe
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Quote:
Originally Posted by D90user
Installed new u-joints (spicer 153x) in the rear shaft on the 110 today. All went fine except on the pinion end (of the yoke) the u-joint is loose. the new u-joint just barely moves (ticks), but it feels like the one I was replacing.
By barely moves, do you mean when you try to move the yoke along the axis of the u-joint, so the journals slide back and forth in the cups? You should have a very slight amount of movement.
Why did you replace them? If the old ones were in really good shape, it's possible the new ones will feel the same. Also, did you grease the new ones well to flush out all of the assembly grease? i.e. new coming out from around all 4 seals.
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  #10  
Old September 22nd, 2009, 10:21 AM
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steve
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Quote:
Originally Posted by Antichrist
By barely moves, do you mean when you try to move the yoke along the axis of the u-joint, so the journals slide back and forth in the cups? .
On one axis it seems that when the clips are set there is not enough pressure pushing the journal into the cup. when you go to twist the flange while holding the drive shaft there is a click. It also flops around with no resistance.

I replaced because A) I had the shaft out B)both ujoints felt bad with one (same side as problem now) being very loose. They did 30k+ of laden driving on dirt roads in South America.

Grease is flowing is fine out of all 4 cup seals.
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