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 Post subject: Gearbox output shaft oil seal
PostPosted: Tue May 22, 2018 2:33 pm 
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paso grand pooh-bah
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Joined: Thu Nov 03, 2011 10:13 am
Posts: 616
Location: Scotland
model: 907 I.E.
year: 1994
The output shaft oil seal on my 907ie appears to be leaking. Does anyone know the size so that I can have one to hand before starting work to change it?

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1994 907ie
2017 Supersport 939
2015 Scrambler Classic
1982 Pantah 500SL


Scotland


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 Post subject: Re: Gearbox output shaft oil seal
PostPosted: Wed May 23, 2018 10:44 am 
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paso grand pooh-bah
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Joined: Sun Jul 18, 2004 12:00 am
Posts: 5236
Location: southern Germany
model: 750 Paso
year: 1987
I don't know the size but Stein Dinse is always a good source for such info. It's part 8, right?
https://www.stein-dinse.biz/eliste/elis ... 544g&lg=de
That would be
https://www.stein-dinse.biz/images/prod ... 832552.jpg

Corteco 25-52-7 BASL DRW (or is that 62?!)

BA = rubber shrouded
SL = second lip (against dust & dirt)
DRW = double sense of rotation

The last seems logical. I'm stunned to learn that there's actually a RD-RH and RS-LH spec which are for right or left hand rotation.


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 Post subject: Re: Gearbox output shaft oil seal
PostPosted: Wed May 23, 2018 1:01 pm 
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paso grand pooh-bah
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Joined: Thu Nov 03, 2011 10:13 am
Posts: 616
Location: Scotland
model: 907 I.E.
year: 1994
Yes, I'd spotted that image and assuming that it's the actual seal and not just a generic image then it will be 25mm ID x 52mm OD x 7mm Width. I guess I'll just have to pull the sprocket off and have a look. I was thinking of replacing it with a Viton R23 (double lip) seal.

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1994 907ie
2017 Supersport 939
2015 Scrambler Classic
1982 Pantah 500SL


Scotland


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 Post subject: Re: Gearbox output shaft oil seal
PostPosted: Sat Jul 14, 2018 2:53 pm 
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Joined: Thu Jul 05, 2018 7:46 am
Posts: 10
Location: UK
model: 907 I.E.
year: 1993
Hi Derek
Can you let us know any tricks/tips if you get there before me. I have just ordered one.
Cheers Tom.


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 Post subject: Re: Gearbox output shaft oil seal
PostPosted: Sun Jul 15, 2018 8:20 am 
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paso grand pooh-bah
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Joined: Thu Nov 03, 2011 10:13 am
Posts: 616
Location: Scotland
model: 907 I.E.
year: 1994
Sorry Tom, I haven't done anything about it yet and will probably leave it until the winter. I don't foresee any problems though - remove the sprocket, screw a self tapping screw into the old seal to provide something to grip on then attach a pair of pliers or similar grip and pull the seal out. I'd apply pvc tape over the fluted part of the shaft to protect the lip when fitting the new seal and oil the seal before fitting. Gently tap it down square with a suitable drift (tube, socket or whatever). Refit the sprocket. Job done.

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1994 907ie
2017 Supersport 939
2015 Scrambler Classic
1982 Pantah 500SL


Scotland


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 Post subject: Re: Gearbox output shaft oil seal
PostPosted: Thu Jul 19, 2018 10:28 pm 
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Joined: Thu Jul 05, 2018 7:46 am
Posts: 10
Location: UK
model: 907 I.E.
year: 1993
Just done mine Derek and it was as simple as you said.
I ordered the seal, my one error was to order a single lip seal. However it is so easy to change that Im not too worried if it does nt last.
Cheers Tom.


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