front driveshaft issues
Thread Starter
CF Veteran
Joined: Mar 2009
Posts: 2,287
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From: Westfield, MA
Year: 1999.
Model: Cherokee
Engine: 4.0, I6
im having issues with my front driveshaft, where the shaft meets the yoke connecting to the front axle. there is alot of play there, and i can slightly rotate it maybe quarter of an inch each way approx. i can feel a slight thump as if it when the shaft rotates it hits something (best way to describe it i know its not hitting anything just loose) my question is where should i look first to fix this issue? from what i can tell my shaft is fine as well as the ujoint its the yoke im worried about? what should i check? what would i need to replace etc? thanks for any help thoughts or opinions if someone thinks the issue is something else.
CF Veteran
Joined: Jun 2011
Posts: 2,858
Likes: 1
From: Nor-Cal
Year: 1990
Model: Cherokee
Engine: The venerable 4.0
Sounds like a rebuild is in order. Haven't done it but need to. My d.s. slaps my exhaust at speed. Anyone know where to get seals etc for these things??? Awww hell I prob just need a new one.
CF Veteran
Joined: Jun 2011
Posts: 2,858
Likes: 1
From: Nor-Cal
Year: 1990
Model: Cherokee
Engine: The venerable 4.0
Originally Posted by Gee oh Dee
Hold the yoke. Then try and spin the DS. If it spins its the U joint.
U joints are way more common than eating front ends.
U joints are way more common than eating front ends.
Thread Starter
CF Veteran
Joined: Mar 2009
Posts: 2,287
Likes: 0
From: Westfield, MA
Year: 1999.
Model: Cherokee
Engine: 4.0, I6
The idea is to isolate the movement/play in the u joints. If you prevent movement where the DS goes into the front diff, between the diff and U joint, then try and move the drive shaft you can tell if the u joint is giving.
I'm about to crawl under mine to get a better explination, cuz I'm doing this from memory.
OK
Back.
Now lemme make ANOTHER post.
I'm about to crawl under mine to get a better explination, cuz I'm doing this from memory.

OK
Back.
Now lemme make ANOTHER post.
Alright, you can clearly see the yoke coming out of your front diff. It'll be the Y shaped thing, grab it at the base closest to the diff.
Then grab your front DS and try to spin it both directions. Don't let the yoke on the side closest to the diff move.
If you get any play, you prolly need a new U joint.
If not...well, we'll move from there.
Then grab your front DS and try to spin it both directions. Don't let the yoke on the side closest to the diff move.
If you get any play, you prolly need a new U joint.
If not...well, we'll move from there.
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CF Veteran
Joined: Jun 2011
Posts: 2,858
Likes: 1
From: Nor-Cal
Year: 1990
Model: Cherokee
Engine: The venerable 4.0
Hope I'm not hijacking but my joints are good. He slip joint has a ton of.play. I thought maybe its too short. It rides about 60% extension so I figured it was good.... as long as you can hold the pinion yoke firmly in one hand and wiggle the d.s. in the other you'll be able to feel if there is play or if its tight
Last edited by Slick761; Jul 15, 2011 at 08:27 PM.
Although, if they are slightly going bad, by hand may not be enough.
You may have to look into other diagnostic procedures if you don't find play by hand.
Thread Starter
CF Veteran
Joined: Mar 2009
Posts: 2,287
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From: Westfield, MA
Year: 1999.
Model: Cherokee
Engine: 4.0, I6
could the length be my issue as well? im running a 6.5" LA kit with stock front shaft and tom woods rear shaft? or should we still focus on the joint vs the yoke.
Thread Starter
CF Veteran
Joined: Mar 2009
Posts: 2,287
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From: Westfield, MA
Year: 1999.
Model: Cherokee
Engine: 4.0, I6
ok it just started raining out pretty hard and i dont have a garage so i cant check till the am pending the rain stops.
Would have been good to know at first.
This gets moved to Advanced since your lifted.
Length could very well be an issue.
Are you using stock driveshaft?
Thread Starter
CF Veteran
Joined: Mar 2009
Posts: 2,287
Likes: 0
From: Westfield, MA
Year: 1999.
Model: Cherokee
Engine: 4.0, I6
but yes the front shaft is the stock shaft from my 99 and like i said running tom woods in the rear at 33" idk if that matters or not.


