Anyone replace Transmission Seal Ring?

Navigator's Son

Well-known member
Joined
Feb 13, 2017
Messages
140
Fluid Motion Model
C-26
Vessel Name
Navigator's Son
I seem to have developed a small leak right where the shaft comes out of the housing. It's almost unnoticeable when the boat is not in use, but once the transmission is engaged, and after just a short trip from slip to fuel dock and back, the brown splattering is very obvious.

The quick research I did says it's one of two things - the simplest would be a loose nut that just needs to be tightened. The not so simple is to remove the housing and replace the seal.

"Re: How do I replace rear seal on transmission
That is likely to be either a loose coupling flange nut where it secures to the output shaft or a damaged O ring that seals between the output shaft and coupling flange. Your biggest problem will be pushing the prop shaft back far enough to get a socket in there and/or to remove the output flange."

So my question - has anyone had to do this themselves, and is this something that can be done with an ordinary set of tools? Some comments in other threads seemed to indicate you need a pressure puller, etc...

2017 R25SC with Volvo Penta D3 150

Thanks!
Robert
 
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