Re: Ultramatic Transmission leaking

Posted by humanpotatohybrid On 2024/5/30 12:57:19

There are two drain plugs in the converter. They don't tend to come loose, but that's option 1.

Option 2 is the main O-ring or the stub shaft gasket. 3.60212, 3.614 in this diagram.https://packardinfo.com/xoops/html/modules/partslist/viewplate.php?cat=15&PlateNumber=37&partslist=1955-1956

Option 3 is the bell housing seal or gasket. 3.514, 3.512 in herehttps://packardinfo.com/xoops/html/modules/partslist/viewplate.php?cat=15&PlateNumber=35&partslist=1955-1956

The parts diagrams are accessible by the link to the left, Factory Parts List then Part Plates.

Note that the numbers I gave you are the group numbers. Click the link on the page and it gives you the part number.

Also just to check, is the trans main case made from aluminum or steel? If it's steel it's a 55 trans, but since you have push button, I doubt it's been swapped.

Also you need to do the roll pin install when you drop the trans to keep the shifter from loosening. I can send more detail on that later.

Also if you open the converter you MUST peen balance marks on the parts. Follow the manual.