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Old 09-10-2022, 11:29 AM   #1
spock345
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Default U joint pain and misery.

I am right now working on replacing the u joints on my amazon. I found the rearmost joint was rather crunchy (no grease fitting) and I've already done the front most joint. So I decided it was time to do the two in the rear half of the shaft.

I ran into some trouble. I bought some moog 341 joints, which should fit but I wasn't able to get the clip into the grooves on both sides. I decided to compare them to the GMB joint I had lying around (came missing grease nipple and clips, so it sat in the parts bin). It would appear that the moog joints are a bit too long along both axes to fit quite right. A bit less than a millimeter. How should I proceed? Go find another u joint and grab a grease nipple for the GMB? Be very careful with some sandpaper on the caps of the moog joints? Give up and day drink?

I'd like to get the car out of the garage so I can do the brakes on my VW.
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Old 09-10-2022, 12:59 PM   #2
white855T
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Did you clean out the yokes? A cross buff on a dremel tool does wonders.
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Old 09-10-2022, 01:01 PM   #3
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Originally Posted by white855T View Post
Did you clean out the yokes? A cross buff on a dremel tool does wonders.
Yep, cleaned them up. I was doing some measuring and noticed one ear on the differential side is slightly bent. About half a millimeter.

The moog joint fit in the center location on the shaft. So two down, one to go.
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Old 09-10-2022, 01:54 PM   #4
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Originally Posted by spock345 View Post
Yep, cleaned them up. I was doing some measuring and noticed one ear on the differential side is slightly bent. About half a millimeter.
That can happen when someone used caveman method to R/R the u-joints (not saying that it was you that did that).
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Old 09-10-2022, 01:20 PM   #5
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Any chance 1 of the needle bearings dropped inside 1 of the caps during installation?
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Old 09-10-2022, 01:54 PM   #6
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Quote:
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Any chance 1 of the needle bearings dropped inside 1 of the caps during installation?
I checked for that. Uninstalled and reinstalled it.
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Old 09-10-2022, 02:00 PM   #7
James M
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Can you mix and match the moog and GMB to make something useable?

I did all 3 on my Amazon with SKF UJ341BL U-Joint that I can only assume should be the exact same.


How's the center support bearing, while you are in there...

Last edited by James M; 09-10-2022 at 02:05 PM..
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Old 09-10-2022, 04:01 PM   #8
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So it didn't seem to be the U joint's issue. It was the mounting flange, the ears were bent. Luckily I had another hiding in a parts bin.

The center bearing was good.
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Old 09-10-2022, 11:57 PM   #9
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Everything is buttoned up, just gonna hit the joints with some grease and go out on the road tomorrow.
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