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73-87 Chevy _ GMC Trucks => 73-87 Chevy & GMC Trucks => Topic started by: philo_beddoe on June 29, 2016, 12:31:53 pm

Title: U-Joint, can it be overgreased?
Post by: philo_beddoe on June 29, 2016, 12:31:53 pm

My driveline vibration is starting to go away. I even removed the two hose clamps and weight i had on there for testing purposes. I do remember greasing up the u joints, but cant remember if thats when the driveline vibe started. Question: could an over-greased u joint have caused it, or could cause a driveline vibe?

Title: Re: U-Joint, can it be overgreased?
Post by: VileZambonie on June 29, 2016, 12:49:45 pm

When you put too much grease in it will expel and when you drive it will sling out of the joint.

If you have a bad u-joint it will cause noise or vibration.

Title: Re: U-Joint, can it be overgreased?
Post by: Captain Swampy on June 29, 2016, 05:25:36 pm

Yep ^^^, will make a mess, but won't hurt anything.

Title: Re: U-Joint, can it be overgreased?
Post by: philo_beddoe on June 29, 2016, 09:16:00 pm

Ok, i think the shaft is fine then, just need some new quality u joints. The extent of the vibration comes and goes. It just "feels" like its the  u joints.

Title: Re: U-Joint, can it be overgreased?
Post by: philo_beddoe on June 30, 2016, 07:09:23 am

Any basic instructions out there on how to replace u joints? Never had to replace before. I dont always trust you tube.

Title: Re: U-Joint, can it be overgreased?
Post by: Fourxbob on June 30, 2016, 01:05:07 pm

A vice, a socket the size of the ujoint and a socket big enough for it to fit inside without getting it stuck inside of it. Put all three in the vice. Large socket then driveshaft then small socket. When you clamp down the vice the smaller socket will push the u joint through and into the larger one. Remove the cap and do it again the other direction for the other side

Sent from my XT1526 using Tapatalk

Title: Re: U-Joint, can it be overgreased?
Post by: Fourxbob on June 30, 2016, 01:06:53 pm

And if you don't have a vice you can use a hammer. Just use an unwanted socket and don't hit the driveshaft or your fingers.

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Title: Re: U-Joint, can it be overgreased?
Post by: philo_beddoe on June 30, 2016, 01:58:04 pm

Thanks, especially the fingers!! Squashed my pinky last spring! Never again. I have a one piece shaft. How about this way?
https://youtu.be/rOEdul7nscY

Title: U-Joint, can it be overgreased?
Post by: philo_beddoe on July 02, 2016, 09:56:07 am

Are the front and rear ujoints different? I'm fig. A.
(http://uploads.tapatalk-cdn.com/20160702/8d22b4d102d7387485c97fe6775bb946.jpg)

Title: U-Joint, can it be overgreased?
Post by: philo_beddoe on July 02, 2016, 04:54:15 pm

One piece shaft, th400, are both ujoints the same size, same part #?!

The guy at oriely gave two the same part #.

Title: Re: U-Joint, can it be overgreased?
Post by: SkinnyG on July 02, 2016, 06:33:43 pm

They ~should~ be the same part number.  Likely a 1310 u-joint.

Unless something has been changed along the way.....  My truck has a 1310 rear, and a 1310-1350 conversion u-joint in the front, but that is not factory.

Title: Re: U-Joint, can it be overgreased?
Post by: philo_beddoe on July 03, 2016, 06:42:30 am

Ok, i have a factory set up. Thanks

Title: Re: U-Joint, can it be overgreased?
Post by: Blazin on July 07, 2016, 07:40:46 pm

A ball joint press is the only way to go for changing U joints.