Remove the transmission/tc or not

Yes. No brainer. Ask yourself the question....when will I ever get another chance to do these big things when its so simple now? The T90 is a leaker, the TC is a leaker... now would be the time to really look things over.......you don't have to rebuild anything unless you need to or want to. You mentioned seals so maybe leaking is an issue. Read up on T90 and TC issues and their fixes. It will never be easier than it is now. DO IT!

Oh, definitely! It will NEVER be easier to replace the front seal in the transmission. The front and rear transfer case seals can be replaced without much effort about anytime, but the front tranny seal can't.

cal.bar wrote: I agree - do it now, but....  after you replace all the seals, it may STILL be a leaker.

All mine leak no matter what. If you glued them together with a epoxy sealant like Yamabond, it might help, but if you want to take them apart, good luck. I always wondered just how well the vent up top relieved internal pressure while at road speed. It seems the spinning internals are what eventually overcome the seals and gaskets due to heat and internal pressure. The transfercase "worms" oil up into the transmission. In the  T84 early WW2 types, they didn't have drain back holes at the fillerplug level. Hence they would fill up and then leak along the input shaft and out the small hole in the bellhousing. The T90 came with these holes later. Huge help. Then there is the top shifter on a t 90. It leaks too!  They don't call me Oilleaker for nothing.  I love the English statement about satisfactory oil pressure readings in a MGTD. Right in their official manual. As long as the engine has "any appreciable amount" you are good. So, as long as your Jeep doesn't leak "any appreciable amount" you are good. Just keep an eye on your oil levels before taking a long trip. A quarter size spot is normal.  A 6 inch pool everytime you stop-------NOT! 

No the reason isn't to fix any leaks. I don't even know if it leaks or not. But it has sat for 50 years so I just thought I'd put new seals because I am sure the old ones are really hard. Plus I want to clean it up. And I recon mating the engine and clutch to it will be easier out of the jeep?

Well, I am now into the full frame-off restoration :)

All production CJ-2A's had the T-90 transmission. A sealed bearing might help if it is installed correctly. Make sure that all collector holes are sealed off.

Konstan,

Just got the rear axle housing all disassembled and painted too