VCCA Home
Posted By: kents57 1933 Std transmission leak - 01/15/21 02:33 AM
My transmission is leaking badly from the rear. Oil is seeping from the connection of the the trans and the u-joint cover and also coming from the area where the torque tube is slid into the u-joint cover. Any ideas and advice on where to start appreciated. I've built streetrods but this is my first original car.

Posted By: SurfAir Re: 1933 Std transmission leak - 01/15/21 03:26 PM
The transmission/ little gearbox only has slingers and no seals, if it is overfilled or parked uphill, fluid will leak out. My slinger cover was cracked when I first bought the car and leaked from theree also.
Posted By: kents57 Re: 1933 Std transmission leak - 01/15/21 05:58 PM
Thanks - not overfilled and parked on my level garage floor. Is the slinger cover the bell shaped item that the torque tube slides into?
Posted By: Rusty 37 Master Re: 1933 Std transmission leak - 01/15/21 08:49 PM
My best guess is that the cork seal at the small end of the bell has deteriorated to the point that it no longer seals.

The best way to fix this is to remove the external bell from the back of the transmission so you can see the u-joint. The separate the u-joint so you can slide the it to the rear.

The shop manual has all the details. The tricky part is getting the right number of shims so the ball moves freely on the bell but does not leak. Plus the ball needs to be very clean and smooth.

There are You-Tubes about replacing that seal.
Posted By: chevy1937 Re: 1933 Std transmission leak - 01/15/21 09:07 PM
They sell gasket and shim kits for the bell shaped item and the the torque tube.Chck Chey's of the Forties.
Posted By: kents57 Re: 1933 Std transmission leak - 01/15/21 11:37 PM
Thanks for the information. I've got the 1933 Repair Manual but honestly I don't see any detail about the rear ball. I've searched utube but can't find any videos about that subject. If you have a link I'd appreciate it. Thanks again for suggestions.
Posted By: m006840 Re: 1933 Std transmission leak - 01/15/21 11:51 PM
The Filling Station has a good article and they will have the parts also. http://www.fillingstation.com/universalball/
Posted By: kents57 Re: 1933 Std transmission leak - 01/16/21 04:38 AM
Been doing more research, Although I had ordered from The Filling Station I didn't notice that their website has a wealth of technical articles - many of which cover the leaking transmission problem I have, After reading several I think I have a good idea of what's involved in rebuilding the u-joint area of the trans and also the torque tube bearing if needed. Thanks again for your suggestions.
© Vintage Chevrolet Club - Discussion Forum