1931 Olds transmission tail shaft seal
Thread Starter
Registered User
Joined: Sep 2024
Posts: 3
From: Ohio
1931 Olds transmission tail shaft seal
Hope someone can help. Looking for a transmission tailshaft seal for my 1931 Oldsmobile. The old one has no number or seal of any kind. I was told it takes a felt type seal (like an axel shaft seal?) The OD looks to be 2 15/16". The ID is 2 1/4". Do anyone have catalogs & numbers? Also looking for a pinion seal while I have the drive shaft out. Any help would be appreciated. Thanx Mike
CH3NO2 LEARN IT BURN IT
Joined: Jul 2010
Posts: 5,628
From: Land of Taxes
Is the shaft an open-style (modern) prop shaft design or the previous enclosed shaft in tube design?
If it's a press-in style seal for both locations, call BDI with the dimensions OD, ID, and depth, spring, or lip seal.
They should be able to come up with something.
If it's just felt like an old rope-style crank seal, I'm not sure what to do.
https://www.bdiexpress.com/us/en/
If it's a press-in style seal for both locations, call BDI with the dimensions OD, ID, and depth, spring, or lip seal.
They should be able to come up with something.
If it's just felt like an old rope-style crank seal, I'm not sure what to do.
https://www.bdiexpress.com/us/en/
Thread Starter
Registered User
Joined: Sep 2024
Posts: 3
From: Ohio
Is the shaft an open-style (modern) prop shaft design or the previous enclosed shaft in tube design?
If it's a press-in style seal for both locations, call BDI with the dimensions OD, ID, and depth, spring, or lip seal.
They should be able to come up with something.
If it's just felt like an old rope-style crank seal, I'm not sure what to do.
https://www.bdiexpress.com/us/en/
If it's a press-in style seal for both locations, call BDI with the dimensions OD, ID, and depth, spring, or lip seal.
They should be able to come up with something.
If it's just felt like an old rope-style crank seal, I'm not sure what to do.
https://www.bdiexpress.com/us/en/
Art S
Joined: May 2021
Posts: 903
From: Warwick, RI
Phantom Phixer
Joined: Dec 2011
Posts: 5,525
From: Apopka, FL
Evidently Olds didn't use a seal on the output shaft of their transmissions until 1939.
Instead, they opted to use a "slinger" to re-direct oil back in to the trans.
How they kept dirt and moisture out, I don't know.
My 1941 Master Parts List shows a different number.
Group 4.335 Return (sling) , Rear bearing retainer oil.
553709............................................ .............................................F28 to 38, L 33 to 38
Instead, they opted to use a "slinger" to re-direct oil back in to the trans.
How they kept dirt and moisture out, I don't know.
My 1941 Master Parts List shows a different number.
Group 4.335 Return (sling) , Rear bearing retainer oil.
553709............................................ .............................................F28 to 38, L 33 to 38
Thread Starter
Registered User
Joined: Sep 2024
Posts: 3
From: Ohio
attached are some pics of what I have. The seal that's there is what I pulled out. From what I've learned, someone stuck something in that was close. Am trying to find a slinger & a pinion seal. So far, no luck. Anyone have a picture of the slinger & seal or an exploded view of the trans? Thanx
Art S
Joined: May 2021
Posts: 903
From: Warwick, RI
Last week I watched a couple of videos from this company's youtube channel of them refurbishing a hydramatic which was done recently. The guy doing the work was active in the comments and seemed friendly and knowledgeable. You could reach out to him and see if maybe he could help you out. The company website is https://www.wittrans.com/ and the youtube channel is https://youtube.com/@curmudgeontrans...sYiD8gfKtbRd4k
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