Topic: 1951-54 Gale Buccaneer 5D10B 5 hp “PS Seal”

This topic has 5 replies, 3 voices, and was last updated 3 years, 11 months ago by Buccaneer.

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February 2, 2022 at 6:09 pm #253870
Buccaneer
Participant
US Member
Both the Johnson TN and Gale 5D10 parts diagrams show
the same part number for the prop shaft seal, it being,
41-62 which translates to 0321788 on Marine Engine website.

The ME listing shows the seal as ID .500, OD 1.000, and thickness as .188.

Problem is, that the actual prop shaft is only .488, uniform all over.
Thinking I knew what I needed, I ordered a CR 4985 seal,
with specs of .500 shaft, 1.000 OD, .250 thick.

The new CR seal feels way too loose, but being my shaft is .488
instead of .500, I understand why.

Question, Would the OMC seal actually be for a .488 shaft, even
though ME stated if was a .500 shaft size seal, or do I have something
strange going on?

Prepare to be boarded!
February 2, 2022 at 8:06 pm #253878
frankr
Participant
An older parts price book supersedes 41-62 with 307563. My guess is that somewhere down through the ages somebody incorrectly said 0321788 supersedes 307563.
February 2, 2022 at 9:40 pm #253882
Michael Anfossi
Participant
International Member
Would you be able to install a ready sleeve on the shaft? Would that be enough to build up the diameter to .500?
February 2, 2022 at 9:49 pm #253885
Buccaneer
Participant
US Member
frankr wrote:

307563

Frank, your theory makes sense. I don’t find any seals on the SKF
catalog search that comes close enough to my shaft size though.
Just like a manufacturer to make an “odd ball” size you can only
get from them.

I guess I’ll look at metric sizes next.
Thanks!

Prepare to be boarded!
February 2, 2022 at 9:51 pm #253886
Buccaneer
Participant
US Member
Michael Anfossi wrote:

Would you be able to install a ready sleeve on the shaft? Would that be enough to build up the diameter to .500?

I don’t think a person would find an over the counter
ready sleeve the right size, and too thin for my
machining skills!

Prepare to be boarded!
February 2, 2022 at 10:14 pm #253890
Buccaneer
Participant
US Member
Looks like the closest metric seal would be a 12 x 25 x 7.

The 12mm shaft size (.472) would be about .016 smaller than
my .488 size shaft. Perhaps it would work if one can get it on
the prop shaft, it doesn’t distort too much and or burn up.

The 25mm OD is just a hair under the 1.000 I need, but
it could be shimmed or cemented in.

Prepare to be boarded!
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