post #1 of Old 04-08-2010, 10:43 AM Thread Starter
thegreatnardini
Registered User
1995 YJ Wrangler 
 
Join Date: May 2006
Posts: 69
Driveshaft Grinding

Hi there -

I was driving on the highway yesterday when all of a sudden the Jeep started vibrating and making a horrible grinding noise. I made it back home and checked underneath and this is what I found where the slip yoke connects to the rear drive shaft:







What do you think could be the cause of this? U-joint failure? they seem ok but I'm no mechanic so I could be missing something. I have a 1.5" lift on the Jeep, and although it came with a transfer-case drop kit I never installed it and haven't had a problem for the two years the lift has been on. Does the drive shaft angle look too extreme? I'm thinking about installing the transfer-case drop kit just to be on the safe side. I'll definitely have to replace the slip yoke and U-joints, just not sure what else needs to be done to keep this from happening all over again.

Thanks for your input guys

thegreatnardini is offline  
post #2 of Old 04-08-2010, 10:45 AM
1997_Sport
Registered User
1997 TJ Wrangler 
 
Join Date: Nov 2008
Location: Essex
Posts: 4,372
Just replace the ujoint and see if it helps.

1997 TJ with some stuff done to it.
1997_Sport is offline  
post #3 of Old 04-08-2010, 12:02 PM
Louie4
Rickety Wrecked Son!
 
Louie4's Avatar
1993 YJ Wrangler 
 
Join Date: Aug 2008
Location: Raleigh
Posts: 10,535
Yep looks like the u-joint needle bearings have wore out and the whole joint has shifted causing it to bind.

Lou

I have a jeep...and it is modified...I win.

YJOTM July 2012
YJOTM February 2014

Louie4's YJ Build
Poison Spyder Fender Install
Warn M8000 Rebuild Adventure
University of Georgia
Louie4 is offline  
post #4 of Old 04-08-2010, 12:40 PM
djsmith1174
Registered User
1993 YJ Wrangler 
 
Join Date: Mar 2010
Location: minnesota
Posts: 163
Just looks like a massive u-joint failure. It happens on occasion. Sometimes the cross will break and the driveshaft will just flop around and smash the floorpan. I doubt that the small lift is compromising your driveshaft angles. Did you notice any vibration prior to the failure? If you did you can always lower the Tcase an inch to alleviate that. If not, just replace the slip yoke and u-joint and chock it up to mechanical failure. If the wear on the driveshaft is too severe, you may want to replace the whole thing. It can easily be thrown out of balance causing vibration and premature failure in the future.

Last edited by djsmith1174; 04-08-2010 at 01:40 PM.
djsmith1174 is offline  
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Similar Threads
Thread Thread Starter Jeep Forums Replies Last Post
DIY XJ front driveshaft shortening for use as rear CV driveshaft on YJ Joe Dillard YJ Wrangler Technical Forum 43 08-12-2014 07:53 PM
Grinding? SFJeep89 YJ Wrangler Technical Forum 9 12-31-2008 05:09 PM
grinding second bybsurf21 TJ Wrangler Technical Forum 15 01-21-2008 03:58 PM
Too much grinding that_1_guy YJ Wrangler Technical Forum 2 07-15-2006 01:14 AM
A/C grinding his15153 TJ Wrangler Technical Forum 3 12-09-2005 04:52 PM

Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome