Loosing gear oil where the outdrive splits

[Dgolly]

I just replaced the input shaft seal. Took it out, and it did great.. it's been sitting in the driveway for 3 days and I've noticed its slowly leaking gear oil.. Its coming out where the unit splits.....can someone please help me with this??

 

[Bt Doctur]

cant see where that is but did you remember the small O ring type seal between the units?

 

[Dgolly]

I never separated them. Pulled the whole thing off and replaced input shaft oil seal

 

[Bt Doctur]

If you tell us what drive you have it would make answering your question a lot easier. But in most cases its the water pump base seal, lower driveshaft seals, upper driveshaft seals, shift shaft seals

 

[achris]

If you have an Alpha style drive, have a read of this.....

http://forums.iboats.com/forum/engi...-engines-outdrives/10435384-drive-leaking-oil

 

[Dgolly]

Looks like its coming out of a hole on front starbort side of outdrive

 

[Dgolly]

Its alpha one, and I believe that's the water drain hole

 

[Bt Doctur]

waterpump base seals or shift shaft seal

 

[Benny67]

shift shaft seal

my $ on that...

 

[Dgolly]

By Doctur, I got the national # from you on another discussion for the driveline seal. Do you have numbers for the other 2 seals? That way I can pick them up at my local parts store. Thanks in advance.....

 

[Bt Doctur]

you dont list the drive so if a Alpha 1 you replace the complete shift bushing, on the gen II you can replace just the seal.
26-89236 Sierra 18-2009 https://www.iboats.com/shop/sierra-gear-housing-shift-shaft-oil-seal-18-2009.html

 

[Dgolly]

S/n om479538 drive ratio 2:00 back says alpha one

 

[achris]

Oil from the front drain could be either of the following...

Upper housing lower seals
Shift shaft seal

It's unlikely to be the lower water pump drive shaft seals as the oil would appear from the water intakes if that was your leak.

You need to remove the drive from the boat, drain it and do a pressure test. That will isolate where the leak is from. You then repair as required.

Chris.......

 

[Bt Doctur]

serial number says Alpha GEN II 98 and newer

 

[Dgolly]

Thanks guys, I ordered a shift shaft seal & a pressure tester

 

[Dgolly]

Thanks achris , shift shaft seal it was. Back to being a happy boater... just in time for 4th of July too,. All you guys rock. This forum has helped me alot.....