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Author Topic: On the road again, but leaking.  (Read 1537 times)

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Offline Tchara

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On the road again, but leaking.
« on: October 14, 2022, 08:29:20 PM »
Today was my first road trip with my CJ3a. After months of hard work, it paid off with a ride for about 10 miles. When I got home, and put it in the garage, I noticed transmission gear oil coming out of the drain hole in the bell housing. I'm assuming the transmission seal. I'm not sure if I should pull it my self, or take it to a shop and get it done. How hard is it to pull the transmission, and is there any special tools required to replace the transmission seal.
I feel pretty confident when it comes to the motores and other stuff, but don't have any experience with transmissions.

Any advice will be appreciated. Is there any additive out there that may rejuvenate the seal, and maybe slow it down for awhile, like a stop leak.

Offline PercyUK

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Re: On the road again, but leaking.
« Reply #1 on: October 15, 2022, 02:42:12 AM »
 Hi, it's all doable with no special tools but a bit time consuming. It's common to drop the gearbox and transfer case together which makes it very heavy. I did it on my own with a trolly jack and some swearing. I would check that the box is not overfilled with oil first before stripping it down just in case. Good luck.

Offline Rus Curtis

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Re: On the road again, but leaking.
« Reply #2 on: October 15, 2022, 11:49:51 AM »
Read two posts down:

"T90 front seal"
Started by farm1810

Also:
Just one of several adaptors made to secure the trans/trxfr case (its asymmetrical and off-center weight-sise).
https://www.thecj2apage.com/forums/rr-gearboxes-without-removing-engine_topic43715_post435572.html?KW=transmission+jack+adaptor#435572

This is the one I'm going to have:
https://www.thecj2apage.com/forums/transmission-jack-adapter_topic47617_post481713.html?KW=transmission+plate+jack#481713

It requires no fabrication except to drill and set up the spacers (washers for me).  I initially planned to pull everything out the front but talked myself out of it.


I believe all instances of dropping the gears, the jeep will need to be up on jack stands (to clear out from under the frame rails.  This needs to be done carefully without you under it while maneuvering. 


Once out, you can find the leak. See first link.
'54 CJ-3B "Green Gruntt"
Bantam T3-C

Offline Tchara

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Re: On the road again, but leaking.
« Reply #3 on: October 16, 2022, 07:26:07 PM »
Thanks for all thr good info. Not sure yet wether I will do it, or t6ake it to a trans shop.