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Manual Transmission Countershaft Oil Seal

Started by las39, January 05, 2014, 05:24:03 PM

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las39

Does anyone know where  to get these outdated oil seals that are used at the end of both the idle and countershaft?  Or at least know the correct name?
Attached picture from workshop manual, with red arrow.
1939 LaSalle 5027
1941 Chrysler Royal Coupe
1934 Oldsmobile F34
1976 Moto Guzzi Convert

Steve Passmore

Thats just a simple 'O' ring, Try a NAPA store. I bought a box of assorted sizes years ago, 100s in there.
Steve

Present
1937 60 convertible coupe
1941 62 convertible coupe
1941 62 coupe

Previous
1936 70 Sport coupe
1937 85 series V12 sedan
1938 60 coupe
1938 50 coupe
1939 60S
1940 62 coupe
1941 62 convertible coupe x2
1941 61 coupe
1941 61 sedan x2
1941 62 sedan x2
1947 62 sedan
1959 62 coupe

las39

#2
Well mine is not an O ring. The grove is flat and about 5mm wide. It looks like a sliced bicycle tube but thicker.
Master Part list 1421118 # 20.0949 calls it Oil Seal.
1939 LaSalle 5027
1941 Chrysler Royal Coupe
1934 Oldsmobile F34
1976 Moto Guzzi Convert

joeceretti

I can't help but wonder if stacking a few o-rings together would work.

harry s

I think those seals were originally leather. I remember using a piece of leather cut to size and soaked in oil on my '37. It worked.    Harry
Harry Scott 4195
1941 6733
1948 6267X
2011 DTS Platinum

joeceretti

Quote from: harry s on January 05, 2014, 08:28:08 PM
I think those seals were originally leather. I remember using a piece of leather cut to size and soaked in oil on my '37. It worked.    Harry

Probably more durable than rubber.

las39

#6
Joe I thought about it too but don't think it will work. O ring grooves are genrally round and it will not seal enough.

Thanks for the tip Harry.
1939 LaSalle 5027
1941 Chrysler Royal Coupe
1934 Oldsmobile F34
1976 Moto Guzzi Convert

Brad Ipsen CLC #737

For sealing the counter shaft and reverse idler shaft use cork gasket material cut to fit the square groove and your favorite sealant.
Brad Ipsen
1940 Cadillac 60S
1938 Cadillac 9039
1940 Cadillac 6267
1940 LaSalle 5227
1949 Cadillac 6237X
1940 Cadillac 60S Limo

las39

Quote from: Brad Ipsen CLC #737 on January 06, 2014, 10:02:33 PM
For sealing the counter shaft and reverse idler shaft use cork gasket material cut to fit the square groove and your favorite sealant.

Yes cork is also a widely used sealing method. I think I'll go for that.
Thanks all ;)
1939 LaSalle 5027
1941 Chrysler Royal Coupe
1934 Oldsmobile F34
1976 Moto Guzzi Convert

Tom Beaver

Northwest Transmission Parts (http://nwtparts.com/) who sells parts for the transmission supply o-rings for sealing the shafts.  They seem to work, but you need to use a de-burring tool or something to chamfer the outside edge of the hole in the case or it will shear the o-ring rather than compress it when you install the shaft.

Tom Beaver

las39

Thanks for the link. Appreciate all the answers ;)
1939 LaSalle 5027
1941 Chrysler Royal Coupe
1934 Oldsmobile F34
1976 Moto Guzzi Convert