Early Tranny Case vent 34720-36 Thread

Early Tranny Case vent 34720-36 Thread

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Re: Early Tranny Case vent 34720-36 Thread


Post by RUBONE » Mon Nov 11, 2019 4:43 am

Make sure the screw is in the correct location, second hole back on the right front side. It opens into the kicker cover cavity. If into the gearbox cavity it will leak.

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Re: Early Tranny Case vent 34720-36 Thread


Post by Don P » Tue Nov 12, 2019 3:23 pm

What I've found to very helpful is a early parts book.

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Re: Early Tranny Case vent 34720-36 Thread


Post by 10Pin » Wed Nov 13, 2019 1:59 am

Robbo, definitely no such thing as too much vent. Other than possibly more water getting in... And for the cover screw, like mentioned above, it just needs to be in the correct hole.

On THAT note, given my wonky threads, I am working on some options. I'm considering using a small hose barb fitting (with the hole drilled and tapped to match), and running a small hose over the side of the case. This bike will be ridden, and sometimes you can't avoid the rain... I am thinking this might limit taking in water, similar to a modern trans vent. Anybody ever done something like this?

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Re: Early Tranny Case vent 34720-36 Thread


Post by Robbo » Wed Nov 13, 2019 8:04 am

Hey 10Pin
I screwed up the thread a bit trying to put the breather back in, to be fair the light wasn't great and there was beer. When I got some daylight on the task I used a smaller diameter 32 pitch tap as a thread file and it fixed it up ok.
Not sure if your idea is workable but on the basis that you cant over vent, a I cant see why not. But given the position of the vent and the size of hole I can't see rain being a big issue.

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