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Greasing "slip yoke" splines
http://www.lostjeeps.com/forum/phpBB3/viewtopic.php?f=1&t=24674		 Page 1 of 1
Author:  roznerd [ Mon Sep 24, 2007 6:21 pm ]
Post subject:  Greasing "slip yoke" splines
Hey guys - I have the same tranny thud that alot of people have mentioned.
I was reading this post http://www.lostjeeps.com/forum/phpBB3/viewtopic.php?t=23971
and it talks about dropping the driveshaft and greasing the "slip yoke" splines.
I couldn't find the slip yoke in my Hayne's manual.

Can someone briefly describe where this is at and how much time you think it would take to drop the driveline, grease, and reassemble?

Thanks in advance
Author:  JJsTJ [ Mon Sep 24, 2007 7:01 pm ]
Post subject: 
Unbolt your driveshaft at the diff, 4 bolts. At the other end of the drive shaft, going into the transfer case, (or transmission if 2wd) is the Slip yoke, . Pull it out, clean it off, add a little grease to the splines on the inside and reassemble. It should take under a half hour total to do it.
Author:  roznerd [ Mon Sep 24, 2007 7:16 pm ]
Post subject: 
Thanks for the reply. So I will unbolt the U-joint at the rear diff and just slide the shaft out at the T-case?

Do I need to put it in neutral and jack the back end up? ( i assume so)

Is there any potential for the T-case fluid to leak out or anything?

I'm just not familiar with these trucks yet. Most of my auto work has been on my 67 bug. Anyway, Thanks again.
Author:  Jeepjeepster [ Tue Sep 25, 2007 11:56 am ]
Post subject: 
Youve got to do something about the boot around the splines also. Some people use a regular pipe clamp on it after taking it off.

No need to jack it up unless you cannot fit under the Jeep.

Tcase shouldnt leak afterwards.
Author:  N / A [ Tue Sep 25, 2007 6:21 pm ]
Post subject: 
you need to pop off the factory cv boot style clamp over the dust boot on the yoke....you can buy a replacement one but I just left mine off as I grease it regularly and nothing has ever gotten in mine.

make sure your on flat when you pop the u joint out as if it rolls your in trouble
Author:  JJsTJ [ Tue Sep 25, 2007 6:33 pm ]
Post subject: 
Heck w/ flat...set the brake and chock the wheels for sure.
Author:  Jeepjeepster [ Tue Sep 25, 2007 7:10 pm ]
Post subject: 
JJsKJ wrote:
Heck w/ flat...set the brake and chock the wheels for sure.


Yes! Be sure you do not take that driveshaft out without setting the ebrake and chocking the wheels!
Author:  roznerd [ Fri Oct 05, 2007 8:00 pm ]
Post subject:  UPDATE
UPDATE:

I greased the splines up w/ RednTacky last night. I actually reattached the boot with some heavy duty zipties (for now).

It was an easy job and I am AMAZED!

No thud! Everything feels really tight on braking and starting from a stop. Very happy.

Thanks again guys
Author:  snowsport [ Sat Oct 06, 2007 11:00 am ]
Post subject: 
What's RednTacky? Will lithium grease work?
Author:  roznerd [ Tue Oct 09, 2007 4:53 pm ]
Post subject:  Red ' N Tacky
I used the Lucas Red N' Tacky grease because that's what I saw the other guys using on the forum.

It's made by Lucas oil and it was $4.00 at my local Napa.

http://www.lucasoil.com/products/display_products.sd?iid=46&catid=2&loc=show

I liked it because it is super tacky and will not dry out and it is really thick. Lithium seems to dry out after a while and it is sort of thinner.

Axle grease should work too.
Author:  snowsport [ Tue Oct 09, 2007 5:54 pm ]
Post subject: 
Thanks! I'm going to get some then and give that a try with the driveshaft.
Author:  06Libby [ Mon Aug 31, 2015 9:23 pm ]
Post subject:  Re: Greasing "slip yoke" splines
Even though its been several years since this was discussed, thanks for the top tip guys. I used spline grease used for input shafts on manual transmissions. Nice and tacky and should say put. Instantly fixed the "thud" I experienced at stops.
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