lower driveshaft upper seal

C

cedgo

Seaman Apprentice
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Jun 19, 2005
Messages
33
First, thanks for the forum! Trying to absorb so much information.

Outdrive #3845109 on a '74 IO. Attempting to find the part # for the upper seal. Not having luck with part #26-32511.

The shaft is 7/8". Am I on the right track?

ed
 
Bt Doctur

Bt Doctur

Supreme Mariner
Joined
Aug 29, 2004
Messages
19,112
Re: lower driveshaft upper seal

for a Alpha or MC1 that is the correct number.Sierra 18-2049
 
C

cedgo

Seaman Apprentice
Joined
Jun 19, 2005
Messages
33
Re: lower driveshaft upper seal

OK, but the information has the shaft diameter at 1.250".
 
ktbarrentine

ktbarrentine

Lieutenant
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Dec 12, 2011
Messages
1,296
Re: lower driveshaft upper seal

Yes...your vertical drive shaft is 7/8, but the "upper" of the two seals in that area does not go on that shaft, it goes on the upper drive shaft that the lower drive shaft mates into. (refer to exploded diagram for your drive). Are you sure you dont need the lower of those two seals?
 
C

cedgo

Seaman Apprentice
Joined
Jun 19, 2005
Messages
33
Re: lower driveshaft upper seal

Not sure, mostly confused.

The part needed is the upper seal for the lower drive shaft. Or, is there no seal there to begin with, the shafts simply mate?

Thanks for patience.

Can't quite seem to figure the exploded view.
 
achris

achris

More fish than mountain goat
Joined
May 19, 2004
Messages
27,468
Re: lower driveshaft upper seal

There are 2 seals in that area. The upper of the 2, (installed from above, with the gears out) seals on the bottom end of the upper drive-shaft, and is part number 26-32511. The lower of the 2, (can be installed with the drive-shaft housing assembled) seals on the top of the lower drive-shaft and is part number 26-965031....
 
C

cedgo

Seaman Apprentice
Joined
Jun 19, 2005
Messages
33
Re: lower driveshaft upper seal

Thank you, thank you! Just what my pea brain needed.
 
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