Packard Forum Index » Post-War (1946-54)

I need a new seal kit for my ultramatic. Who should I go with and how do I tell if its an external or internal seal?

Probably Kanter for the entire kit. You didnt mention where it is leaking from. Lots of different type of seals/bushings in an Ultramatic.

If you're going to yank it to do the seals, rebuild all of it. Get the bands or whatever they are with the new gm materials. Get NEW BUSHINGS AND INSTALL THEM! they control pressure and shifting, etc in the trans. Lastly, replace the clutch disc in the converter.

After doing all that, if your linkage is adjusted properly, you'll have a leak free, well driving trans that will outlive you and the car. You don't want to do just seals to find out a year or so later that your clutch disc is glazing over or the bushings are wearing out.

There are some differences, if i recall, my 50 didn't have the early sand cast valve body, but a bushing was bigger or smaller somewhere and so the machine shop bore something out so the newer bushing style fit. It was an early/late production thing.

Agreed, If you are going to get into it, do it all.

I carry that kit for $390.

Master Kit = Includes All Gaskets, Seals, O-Rings, Lip Seals, Sealing Rings, Friction Clutches, and Steel Plates.

Michiana Packard is the only one offering the six steel clutch plates in the master kit for this price.

Bands are $110 with a $50 core

We also carry

Overhaul Kit = Includes All Gaskets, Seals, O-Rings, Lip Seals, and Sealing Rings

Major Kit = Includes All Gaskets, Seals, O-Rings, Lip Seals, Sealing Rings, and Friction Clutches

Troy

Absolutely agree! Once the unit is out, do the full job - it's a decision you will not regret. And when finished, be meticulous and precise about the proper setting of the throttle pressure linkage - it's absolutely essential to long transmission life.