Re: 1951 ultramatic leaks

Posted by HH56 On 2017/12/13 18:51:59

Sorry about that. There are 7 or 8 definitions of the abbreviation IIRC and the one I meant in this context was "if I remember correctly".

Some of the Ultra cases have deep enough recesses that if the bore is cleaned of any dirt and grease a new seal can be installed and pushed up next to the old. Many have been able to do this as a quick and dirty fix. If the case is one of those that has a shallow recess or if that procedure has already been done then nothing to do but remove the pan and pull the shaft out to remove the old seal(s). Manual shaft will need a hole in the frame to pull it out without removing the trans but the throttle valve shaft is removed from inside the case.

If you do try a second seal over the first be sure the shaft is clean in the area where the new seal will sit but be careful it is not rough, scratched or gouged or the new seal will fail in short order. Throttle shaft side may still require a hole in the frame in order to get a socket or other tool over the shaft to drive the seal straight into the bore