Re: Mike P 1955 400 Slow Resto Thread!

Posted by HH56 on 2022/8/5 16:56:32
Unless you are a dealership mechanic with a flat rate chart, I think giving a time estimate is difficult -- even with more experienced people with proper tools doing it.

Aside from the time needed for trans removal and replacement which can vary greatly depending on tools and jacks and any additional help on hand, once it is out you are going to need to figure out the best way to remove the old seal -- assuming you are going to keep the bellhousing attached to the trans body. If you leave it in place you will have the input shaft to contend with so that might need some ingenuity and working space might be a bit tight.

If you plan on removing the bellhousing then you are most likely going to need a new gasket and no idea if those are available outside of a gasket set or rebuild kit. In either case, you must remove the seal without damaging the input shaft or more importantly, the pump shaft bushing positioned just behind the seal. The new seal needs to be installed straight and to the proper depth.

Here is an illustration showing the seal in position and how close the bushing is behind it. I also drew in an approximation of the space taken by the input shaft if the bellhousing stays on. The factory had special tools which are shown in use and some universal seal and bushing tools can work but all tools depend on a clear work space. Removing the seal with shaft in place will be a matter of finding something to either attach to the seal or get some kind of jaws behind it to pull it out. Ross might have some suggestions on more easily removing and replacing or if it can be safely done with the bellhousing in place..

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jpg  front seal.jpg (392.76 KB)
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