Author Topic: Changing out U joints  (Read 2992 times)

Offline ///BHRpowered

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Changing out U joints
« on: December 08, 2013, 06:53:08 AM »
How do you change out the joints on a driveshaft? Pretty sure the ones in my front DS are toast - but its something iv never had to do.

OR, any local driveline shops in the area? may not rebalancing as well. Thanks
"If it weren't for physics and law enforcement I would be unstoppable" - ///BHRpowered
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Offline Davetopay

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Re: Changing out U joints
« Reply #1 on: December 08, 2013, 08:54:36 AM »
M&D  8)
I think I saw a thing, but I don't know what thing I thought I saw.

Offline unl1mtd

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Re: Changing out U joints
« Reply #2 on: December 08, 2013, 09:01:59 AM »
It's really not impossible to DIY this job. Having a bench vise of 5" throat or greater plus a basic ball joint / unjointed press makes it go a lot easier.

I had a decent write up on the old .com when I overhauled mine. It's three joints and the centering ball. Once you figure out how to change one you just repeat. I think it took me about an hour once I got the drive shaft out of the jeep.

Does the WJ have the same front driveshaft as a TJ? If so, check stu-off-road for a good write up/how to.
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Offline majestek12

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Re: Changing out U joints
« Reply #3 on: December 08, 2013, 10:14:43 AM »
most wj's have rzeppa joints which cant be changed. a quick peek underneath will tell you right away. if you dont have rzeppas then unlimited is spot on between his advice and the redirect to stu's website.

if you have rzeppas there's no rebuilding, new shaft is needed. you can get ones that have u-joints - better in the long run.

Offline ///BHRpowered

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Re: Changing out U joints
« Reply #4 on: December 08, 2013, 10:40:00 AM »
It' is an aftermarket shaft from carolina driveline. Haven't been super happy with the quality, grease it up every 4-6 months but every 30k or so it need balancing or new joints.
"If it weren't for physics and law enforcement I would be unstoppable" - ///BHRpowered
"Watching the two black Millenias disappear over the horizon in front of the helplessly outraced Chevy was a treat for the X-man" - Xedosman
"I am not looking to take over the world like BHR" - cwkann

Offline JEEPIN J

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Re: Changing out U joints
« Reply #5 on: December 08, 2013, 11:15:55 AM »

Does the WJ have the same front driveshaft as a TJ? If so, check stu-off-road for a good write up/how to.
http://stu-offroad.com/axle/driveshaft/driveshaft-1.htm
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Offline ltdanyj

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Re: Changing out U joints
« Reply #6 on: December 08, 2013, 12:41:05 PM »
It' is an aftermarket shaft from carolina driveline. Haven't been super happy with the quality, grease it up every 4-6 months but every 30k or so it need balancing or new joints.

Definitely doesn't sound right... swap the joints with some sealed spicers and try again...
Nothing at the moment... be patient

Offline ///BHRpowered

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Re: Changing out U joints
« Reply #7 on: December 09, 2013, 01:08:56 PM »
How long do the sealed units usually last? Joints are cheap but its more annoying then anything.
"If it weren't for physics and law enforcement I would be unstoppable" - ///BHRpowered
"Watching the two black Millenias disappear over the horizon in front of the helplessly outraced Chevy was a treat for the X-man" - Xedosman
"I am not looking to take over the world like BHR" - cwkann

Offline majestek12

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Re: Changing out U joints
« Reply #8 on: December 09, 2013, 01:33:46 PM »
How long do the sealed units usually last? Joints are cheap but its more annoying then anything.

Seems to depend on quality (brand) and overall vehicle configuration. On stock vehicles I've seen 100k+ miles without issue. But, throw in some odd angles, lifts, submerging in mud, water, etc. and they'll go faster. My Bronco has 220k on it and to my knowledge they're original as I've never replaced them (bought with 75k on it).

Offline ///BHRpowered

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Re: Changing out U joints
« Reply #9 on: December 10, 2013, 05:00:40 AM »
Anything near the manassas area that could also balance the DS? It's gotton much much louder when first starting out and then quiet downs a bit once warm and on the gas.
"If it weren't for physics and law enforcement I would be unstoppable" - ///BHRpowered
"Watching the two black Millenias disappear over the horizon in front of the helplessly outraced Chevy was a treat for the X-man" - Xedosman
"I am not looking to take over the world like BHR" - cwkann

Offline majestek12

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Re: Changing out U joints
« Reply #10 on: December 10, 2013, 07:20:18 AM »
Only places I know are Driveline Specialists in Lorton and Northern VA Supply in Springfield off of Fullerton Road. NoVA Supply has a shop in Manassas but they don't have a driveshaft shop at that location. Are you sure its the shaft? Being on the gas will cause the noise to change (loaded vs. non-loaded) but being warmed shouldnt have an effect on the shaft. Tcase or rear end will however.

Offline ///BHRpowered

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Re: Changing out U joints
« Reply #11 on: December 10, 2013, 12:33:59 PM »
It's almost dead silent if I remove the front driveshaft. When I first take off in the cold its much much louder, as I spend some time on the highway it will quiet down once back at slow speed. Decent driveline vibes as well.
"If it weren't for physics and law enforcement I would be unstoppable" - ///BHRpowered
"Watching the two black Millenias disappear over the horizon in front of the helplessly outraced Chevy was a treat for the X-man" - Xedosman
"I am not looking to take over the world like BHR" - cwkann

Offline Funn-E-Man

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Re: Changing out U joints
« Reply #12 on: December 12, 2013, 10:24:24 AM »
Just did my front U-Joints the other day and then the Repezza side went and started binding....FLM so now i need to go get a replacement. If you want i can help change the U-Joints if you want to do it yourself. I have a garage to work at here in Purcellville. Im riding without my front DS right now as well.
01 WJ 4x4 4.0, Kolak brake upgrade, Moog Steering stablizer, OME 3" lift springs, JKS Adj Track Bar, Bilstine Shocks.

Offline ///BHRpowered

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Re: Changing out U joints
« Reply #13 on: December 14, 2013, 07:30:52 AM »
Colder it gets the worst its gotton, to the point it's dramatically vibrating the car and making noises. Almost like a CV axle clicking but at high speed.

Pulled out the front DS and....silence. Jeep rides quiet and smooth with no issues. Looks like a zerk fitting broke off 2 of the joints, some grease but also sand etc in there.
"If it weren't for physics and law enforcement I would be unstoppable" - ///BHRpowered
"Watching the two black Millenias disappear over the horizon in front of the helplessly outraced Chevy was a treat for the X-man" - Xedosman
"I am not looking to take over the world like BHR" - cwkann

Offline JEEPIN J

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Re: Changing out U joints
« Reply #14 on: December 14, 2013, 12:28:46 PM »
Colder it gets the worst its gotton, to the point it's dramatically vibrating the car and making noises. Almost like a CV axle clicking but at high speed.

Pulled out the front DS and....silence. Jeep rides quiet and smooth with no issues. Looks like a zerk fitting broke off 2 of the joints, some grease but also sand etc in there.
They could be the grease fittings that need a needle adapter to grease.
97 TJ 35s & the like
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