Tcase Thingy - What ???

[Tad]

OK, you would think at 499 posts I would have at least noticed this thing on the back of the transfer case. While doing the exhaust, I look up, it's like some type of ujoint. It connects the Tcase to the drive shaft. What the $%^& is that thing. I've owned some weird stuff in my life so help me out here.
1. What is it really called?
2. What's in there?
3. Besides a new rubber boot, how do I service it?
4. What else should I know about this?

http://members.cox.net/tadsal/tcasethingy.JPG

TIA - Tad

[ibnfe]

Looks like a CV joint to me. I don't know when they started using those though. As far as servicing, I guess you could rebuild it like any CV. New boot, inner rollers, roller hub and lots of grease. I've never pulled one apart on a driveshaft, only on axles. I am guessing they are the same setup inside.

[Crazy_Jeepman]

Yup that is what it is. Then again when you ask for a new on at most generic auto parts stores you may as well ask for the thing muh jiggy for a space shuttle, cause they will understand that better than a CV joint for a 1970 Wagoneer. Strange though my 70 does not have that, but have pulled them off a 74. I think I have a new driveshaft though cause it is fresh oncoat black paint with white aligning arrows painted at each end. Well maybe the arrows are meant for me to figure out how to put it back in. LOL ;)

[jeepbob]

That is a cv style drive shaft that is not compatable with any lift kit. You can replace both the T/case yoke and the drive shaft with a normal style unit. The big problem is that the shaft is limited on the amount of travel it can have.

[Langdon]

I believe those are called 'ball and trunnion' joints... :cool:

[Crazy_Jeepman]

<blockquote>quote:</font><hr>I believe those are called 'ball and trunnion' joints<hr></blockquote>
Yes that is the correct name. ;)

[Tad]

OK, ball & trunion, that's kind of like the old repza style ujoint in the front axle of some mb's and such right?

[porkchop]

I wonder why they did not come on all the earlier wags :confused: . One guy here in town has a 65 with that joint and my 67 doesn't have it and Gremlin's 70 doesn't have it. That is strange.

[Tad]

PC, now I really know why a couple of Dana 20's were needed.
I've never seen anything like this on a tcase, what luck, I was hoping someone would tell me that's the 1K special part.
:confused: redface.gif :( I will prevail

I gave Rob at Willys Works a Buick TH400 & D20 1 year ago for a complete brake system for the Willys I sold in Dec, it didn't have that _____ (substitue word of choice), should've paid cash & kept it I guess.

[ March 30, 2002: Message edited by: tadsal ]</p>

[wanablikemike]

There is one of those behind the D20 in my '69. THe problem with that is that I was planning on putting that t-case in my Cherokee that has a 4" lift and Jeepbob says that it is not compatable with any lift. Where should I look for a compatable yoke & driveshaft? I may be wasting my time with this D20 swap thing.

[Tad]

wanablikemike -
Where you would find a yoke in your neck of the woods? I'm not sure. Remember, there are a lot of disabled Dana 20/TH400 combo's out there for the jeep. The weak link was the adapter between the two. I have to travel this coming week so I won't be able to check on availabilty locally till fri or sat. Drive shaft shouldn't be a problem, probably just going to have one r&r'ed from a junk yard.

[porkchop]

I have another yoke that you can have, wanablikemike. I will bring it when I come for the wag. How does that sound to you.

Tad, the adapter is not as weak as people think. I have broken a gear from romping on it and the adapter is fine. I have also know somone that stripped the out put shaft with out messing up the adapter. If you put in a newer style mount with a poly tranny mount there will be no trouble.

[Tad]

PC, as Rob at Willys works explained it to me it's not the adapter that's really weak, it's they way people put them back together and strip the threads out of them or break the corners. That's why he wanted mine, it was a good trade at the time but I wish it was still laying in the yard.

[jeepbob]

The reason the shaft is not compatable is due to its limited amount of in and out travel. You could, provided the shaft movement is not more than allowed by the joint, use this set up if you got the length of the shaft altered to put the balls in the center of the trunion. IMHO (and it is not the word of God) the spicer (slip joint and std u joint style) offers more flexability and if you twist out a joint there is much more chance of someone having a spare u joint.

[mtjeep]

I know this thread is old but I had to revive it. I'm looking at the same "ball and trunnion" joint on my 67' wag with a torn boot. Checked with Napa for parts and they just scratched their heads. They tried looking up under Kaiser also with no luck. Anyone know of a supplier that would sell a rebuild kit?

[Lindel]

take a look at www.willysoverland.com (http://www.willysoverland.com), or get in touch with Zack at www.zmjeeps.com (http://www.zmjeeps.com)

[Schlagger]

Maybe try Parts Mike too. He seems to have a wide yoke selection:

http://www.partsmike.com/

[Tad]

Except for a few similar posts and some brief conversations I haven't thought about this in almost 10 years.

I know this thread is old but I had to revive it. I'm looking at the same "ball and trunnion" joint on my 67' wag with a torn boot. Checked with Napa for parts and they just scratched their heads. They tried looking up under Kaiser also with no luck. Anyone know of a supplier that would sell a rebuild kit?

Even back then rebuild kits were like $75 and replacements were around $140.
I would get a yoke and have a shaft made (what I did back then), it's 10 spline but I don't recall the diameter.
I think it's the same rear yoke as on a OT rig but it's been a really long time so hopefully someone can verify that.

[fulsizjeep]

I think it's the same rear yoke as on a QuadraTrac rig but it's been a really long time so hopefully someone can verify that.10 spline, same fit, affirmative. I have never seen a 26 spline yoke on the rear of a QT, just the front.