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Vintage Vespa Forum

Layshaft oil leak

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Sidecardriver Richard Placak
Atascadero, CA, USA   USA
What seals the left side of the layshaft on a VBB? I have a leak and I don't see any seal in the manuals.

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OlympiaScooterCompany Silver Member Matthew Gatlin
Olympia, WA, USA   USA
Hello Richard,
Yes there is a left side seal piaggio part number 46699 Rear Hub 27 x 37 x 7



Matthew Gatlin
Olympia Scooter Company
Cell: 503.954.4043
Email: sales@olympiascootercompany.com
Website: www.olympiascootercompany.com


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Sidecardriver Richard Placak
Atascadero, CA, USA   USA
Thanks Matthew but that is the seal on the transmission output shaft. My leak is where the layshaft (counter shaft) comes through the case at about 5 o'clock in relation to the clutch cover. That shaft doesn't turn, the gears turn on the shaft. There is a nut on the end of the shaft with a lock washer with bent up tabs. It may be that the shaft is an inference fit with no seal and the case is warn and does not seal. I don't know what would happen if I removed that nut and attempt to put an o ring on the end of the shaft. I think the case would need to be opened up to work on that shaft.

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OlympiaScooterCompany Silver Member Matthew Gatlin
Olympia, WA, USA   USA
Hello Richard,
I think you are referring to the spring gear assembly which I do not think they had o-rings on the pin.

Here is a link to the spare parts manual compliments of scooterhelp

http://www.scooterhelp.com/serial/VBB.parts.book.html



Matthew Gatlin
Olympia Scooter Company
Cell: 503.954.4043
Email: sales@olympiascootercompany.com
Website: www.olympiascootercompany.com


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Sidecardriver Richard Placak
Atascadero, CA, USA   USA
Yes I think that's where the oil is coming from. I reduced the amount of oil in the gear box and that helped some.

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