Cadillac & LaSalle Club Discussion Forum

Cadillac & LaSalle Club Forums => Technical / Authenticity => Topic started by: Caddygranddaddy on September 22, 2024, 09:56:57 PM

Title: ISO local expert for 4 speed turbo hydramatic transmission
Post by: Caddygranddaddy on September 22, 2024, 09:56:57 PM
The 4 speed turbo hydramatic transmission in my 1961 Series 62 is leaking like crazy. Hoping to find someone near Austin, Tx who specializes in these transmissions.
Title: Re: ISO local expert for 4 speed turbo hydramatic transmission
Post by: Clewisiii on September 25, 2024, 05:46:16 PM
This is who did mine. He was in Michigan, now in North Carolina.

So unfortunately not local. But great guy and great work.

https://www.classichydramatic.com/
Title: Re: ISO local expert for 4 speed turbo hydramatic transmission
Post by: Big Fins on September 25, 2024, 06:01:57 PM
Any idea where it is leaking from? Front? Back? Only when running?
Title: Re: ISO local expert for 4 speed turbo hydramatic transmission
Post by: Michael Petti on September 27, 2024, 06:29:00 AM
Maybe it just needs to be resealed if it shifts okay.  How big a leak is it?
Title: Re: ISO local expert for 4 speed turbo hydramatic transmission
Post by: Caddygranddaddy on November 03, 2024, 08:27:19 PM
Quote from: Big Fins on September 25, 2024, 06:01:57 PMAny idea where it is leaking from? Front? Back? Only when running?
leaking from the front, only when running.
Title: Re: ISO local expert for 4 speed turbo hydramatic transmission
Post by: Roger Zimmermann on November 04, 2024, 03:23:42 AM
Most probably, the seal at the flywheel housing is leaking. To replace it, the transmission must be removed. If the seal is not looking bad after removing the flywheel housing, let check if the fluid coupling is leak free. I had an horror story with a transmission leaking badly: the weld at the torus cover assembly's neck was bad.
In the 1959 shop manual, there is a description how to check it. I unfortunatlely don't know if the '61 manual is also showing it.