Chasing 231J leaks
- Thread starter macleanflood
- Start date
Hey,Mac,I think I would get a different case and have it rebuilt,and just be done with it?
I found a new old stock not too long ago, but regardless you want 4798120. The YJ yoke is a traditional style with straps and not CV/double cardan style, so you for sure don’t want that.
Crown makes one for the TJ application, but it won’t have the dust shield. I bought an Omix one first that did have the dust shield, but the yoke was made a bit differently which pushed the dust shield towards the transfer case and the shield rubbed the case. So that one was no good unless I removed the dust shield which was the whole reason I bought that one to begin with.
I feel for you, that is crazy no leaks while 4-wheeling. Those videos were cool.
I have a 92/93 case. I think I only need the front half. I think I need to move everything from mine to the new case front including the front flange and planetary.
I don't know if the vacuum switch hole on the 92/93 case is the same as the switch on the 96/97 case.
These are the parts I think I need...a yoke on the crazy assumption mine is out of round or something killing the seal. A pump because I think (but don't know) it's hot and maybe that's causing the issue (but works perfectly otherwise). Bearing and seal kit. The 92/93 case wasn't sealed and I want to replace any front case bearings. The kit gives me options.
I PMed three people with complete cases yesterday and nobody answered.
Not sure anyone has made...but I can't find a complete guide to 231J years and intercompatibility.
Generally speaking most research I've done seems to indicate a break somewhere between 95/96 with planataries and vacuum switches.
-Mac
Oh and the rusted Sahara has I think a 242 part time case. I suppose I could use the front case half and yoke off it. Just lothe to rip it apart.
-Mac
-Mac
My thought is the TCsse ATF stays cooler during off-roading because we’re going so slow and parts are moving slow. Fluid being jostled around. But when you get on highway all that changes. Parts moving fast. Pump really needed because no jostling around. Getting much hotter. I bet that pump is done. The little O-ring is there, right?
Man I wish I had kept that full case for you. It would have been a straight swap if yours can take the short snub.
Man I wish I had kept that full case for you. It would have been a straight swap if yours can take the short snub.
Where?
Here's another option...pay for a Copart membership and buy a wrecked Rubicon.
Hell I probably could drive my Jeep to Utah to pick it up. Remove the T case in the parking lot and scrap the rest.
https://www.copart.com/lot/56426375/salvage-2006-jeep-wrangler-tj-rubicon-ut-salt-lake-city
-Mac
Disregard the red arrow. Where the green arrow is pointing, there’s a little o-ring that sometimes when you pull the tube out it stays inside the recess or sometimes it stays on the tube itself. Either way it can get lost.
Your later model planetary will not work in that transfer case since that transfer case is a 92-93. They changed it right at the start of 95. I have a 95 YJ case built in October of 94 and it uses the TJ stuff (late model planetary), I also have one built in 93 for a 94 YJ and it has the old parts. So the change happened sometime between then. Officially, the 95 YJ FSM notes new parts, so I think changes were officially for the 95 model year, regardless of date built.
Vacuum switch and electrical switch are interchangeable, no issues there.
I haven’t figured out why, but the annulus gear inside the t-case front half appears to be the same early or late. Yet I tried a late model input gear and planetary into an older front case, and it made bad noises when I spun it by hand.
Luckily, since you have an AX15, you can use any length 23 spline input. So if you do need to buy one for the YJ case, your options are opened up.
Aside from the planetary differences, you can definitely make the YJ case work in your TJ. The factory front yoke will be fine so long as you get the TJ style seal (4798112), and the SYE will fit too. You can keep the synchro hub parts from the YJ case or use the more simple non synchro parts from the TJ case. Doesn’t really matter. If you keep the YJ hub and sprocket (slightly smoother shifts due to synchro), then you will need to hammer out the caged needle bearings to fit them onto the SYE mainshaft.
Early Cherokee version there. Don’t see those often.
You’ll have to install your 4x light switch on the SYE tail housing if you use that one.
Dex also has new piston kits. Or you can send him your arms and he will install new pistons. Since you have a press, I would order new pistons and rings from him.
Don't forget...this can be done without pulling the engine.
Mac. Because you would be buying a motor vehicle you must be a dealer. The good news is there is a list of people on their website who are dealers who will place your bid for you - for a small fee.
Buying wrecked for parts stockpile is a smart move. A while ago I let people know about a running 04 that got rain water inside the vehicle and it sold for $750. The entire rust free running TJ.
Damn I thought it was from a 98. So this isn't any different than the 92/93 case. Grr.
-Mac
XJs got rid of the CAD and vacuum switch around 1990, carrying I think a bit into the 1991 year until they finally stopped. So it’s at least that old. I’m pretty sure I see a “90” on the tag, indicating it was built in 1990. I would rather have the YJ case than that one, personally.
Any of them will work for what you’re doing, you just need them to be 23 spline to fit your transmission.
Agreed. And it's complete enough I can clean it up and resell the one I just bought.
Swore it was from a 98 TJ.
Will the YJ vacuum switch hole work with the TJ 4x4 switch?
-Mac
If it was from a TJ, the main shaft would be exposed, there wouldn’t be that extension housing tail cone piece. Only the 96 and older XJ and 95 and older YJ used that piece.
Yes, the vacuum switch and electrical switch are the same thread and they interact with the sector plate or mode fork rod the same; aka they are interchangeable.
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