Crusi O Matic leak

Crusi O Matic leak

Joined: May 11th, 2018, 1:32 pm

May 11th, 2018, 1:50 pm #1

Hi.  I just registered on this site and having a couple of Fords from the 50s and one 62 I am glad I found it. I cant seem to find an answer to this question so hope it hasn't been covered before. I have a 58 retractable with Cruse-O-Matic and after replacing the rear extension seal and bushing I have a leak through the yoke. I understand that the small weep hole needs to be there but my question is what is used on the shaft for a seal to prevent oil from leaking thru the splines into the yoke. I see some pics that show a shaft seal (also called a spline seal I guess) but that is in a later tranny. I have searched the internet and don't seem to be able to find a spline seal (or output shaft seal) to purchase so any info on it would really be appreciated. Thanks in advance. 
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Joined: November 18th, 2004, 4:20 am

May 11th, 2018, 3:30 pm #2

You will probably have to find a transmission shop that has been around for many years. They should have one in a corner. Other than that you would have to buy a complete overhaul kit. Nicknamed a grunt seal. 
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Joined: May 11th, 2018, 1:32 pm

May 11th, 2018, 6:11 pm #3

Thanks Stuart. I live in the Minneapolis/St Paul area so I will look for one. I appreciate the quick response. 
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Joined: November 18th, 2004, 4:20 am

May 11th, 2018, 6:21 pm #4

There are two sizes of output shafts. 

Depending on the stove in yours.
Small or medium transmission. 
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Joined: May 11th, 2018, 1:32 pm

May 11th, 2018, 6:41 pm #5

The tranny is in my 58 Retractable and the output shaft has 31 spines if that helps. I am thinking it is a medium because it has the 352 in it. 
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Joined: May 11th, 2018, 1:32 pm

May 11th, 2018, 6:53 pm #6

Stuart I just read a post on another site that said you rebuilt these tyranny's for over 40 years so I am really glad to talk with you. It looks like the spline seal is a longer rubber seal with 3 or 4 ridges that look like O rings, am I right on that? 
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Joined: November 18th, 2004, 4:20 am

May 11th, 2018, 11:20 pm #7

You are right on your explanation.
I will see if I can find a real photo. 

FYI. I started building transmissions in 1963. Tore my shingle down about 12 years ago.
Now providing info is my contribution. 
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