News:

Due to a technical issue, some recently uploaded pictures have been lost. We are investigating why this happened but the issue has been resolved so that future uploads should be safe.  You can also Modify your post (MORE...) and re-upload the pictures in your post.

Main Menu

1937 LaSalle Transmission Seals

Started by rg171352, March 21, 2023, 03:34:04 PM

Previous topic - Next topic

0 Members and 1 Guest are viewing this topic.

rg171352

I am working on putting together my transmission.  Is there a seal for the tail shaft that can be replaced?  If so, where can I find these?  I have a gasket set, but would like to replace everything at once.


Daryl Chesterman

#1
If you have the old seal, look for a number on it.  You might see the number on the outside face, or you might see the number on the rubber lip (if it is rubber!) of the seal.  If you find no number, you can use a caliper to measure the inside diameter of the bore the seal is pressed into, and the outside diameter of the shaft that the seal fits over.  These two dimensions along with the depth (or thickness) of the seal shell is all that a bearing house needs to set you up with a replacement seal.  Be sure to tell the counter person what the application is so that they will get the proper seal lip configuration.  If you have the parts catalog, you can look to see what the GM part number is and the counter person might be able to interchange it.  On that age of transmission they were probably using leather seals, and a modern seal will be much better, but will probably have to be acquired using dimensions.

Daryl Chesterman

Brad Ipsen CLC #737

It does have a seal.  The number is National 51098 which can be interchanged to other brands.  If the surface on the yoke is bad a sleeve to fix it is Redi-Sleeve 99149.
Brad Ipsen
1940 Cadillac 60S
1938 Cadillac 9039
1940 Cadillac 6267
1940 LaSalle 5227
1949 Cadillac 6237X
1940 Cadillac 60S Limo

rg171352

Thank you very much for your replies and help.  The seal is on its way.

rg171352

Quote from: Brad Ipsen CLC #737 on March 23, 2023, 09:34:05 PMIt does have a seal.  The number is National 51098 which can be interchanged to other brands.  If the surface on the yoke is bad a sleeve to fix it is Redi-Sleeve 99149.

Is it difficult to swap the seal with the trans mostly assembled?

Cadillac Jack 82


I believe the seal was a metal core that was vulcanized.  There's a few companies out there who can rebuild it I believe.
Tim

CLC Member #30850

1959 Cadillac CDV "Shelley"
1964 Cadillac SDV "Rosalie"
1966 Oldsmobile Toronado "Sienna"

Past Cars

1937 LaSalle Cpe
1940 Chevrolet Cpe
1941 Ford 11Y
1954 Buick 48D
1955 Cadillac CDV
1955 Packard Clipper
1957 Cadillac Series 62
1962 VW Bug
1962 Dodge 880
1966 Mercury Montclair
1967 Buick Wildcat Convertible
1968 Chevy Chevelle SS
1968 Plymouth Barracuda
1977 Lincoln MKV

Brad Ipsen CLC #737

I have always replaced the seal in the process of going through the transmission so then it is really easy, but I think it could be done from the outside using some typical method of removing seals.  It is not trapped.

This is a very conventional seal.  In 41 with the introduction of the Hydramatic the stick shift seal was changed to match its seal.  Slip joint was now in the transmission and not the driveshaft.
Brad Ipsen
1940 Cadillac 60S
1938 Cadillac 9039
1940 Cadillac 6267
1940 LaSalle 5227
1949 Cadillac 6237X
1940 Cadillac 60S Limo