The BSA A7-A10 Forum

Technical (Descriptive Topic Titles - Stay on Topic) => Gearbox, Clutch, Primary => Topic started by: t20racerman on 08.09. 2017 22:00

Title: Gear lever shaft oil leak - best solution?
Post by: t20racerman on 08.09. 2017 22:00
Hi all
My A10 weeps a little oil from the gear lever shaft. Not a huge amount, but enough to make me want to fix it. Has anyone fitted a seal of any kind? I'm happy to find my own solution, but I'd love to hear of anyone's experiences in fixing this.

I've ordered a Nova 5 speed 'box, so would like to   look to fix this when I fit it. (I like making mods 😁)

Title: Re: Gear lever shaft oil leak - best solution?
Post by: orabanda on 09.09. 2017 03:04
You may have excessive clearance between the selector shaft and the bush.

It helps to fit a breather to the gearbox; this can stop leaks from the shaft bushes.

Richard
Title: Re: Gear lever shaft oil leak - best solution?
Post by: JulianS on 09.09. 2017 09:37
This one was machined to accept an O ring.
Title: Re: Gear lever shaft oil leak - best solution?
Post by: t20racerman on 09.09. 2017 18:38
Some good ideas there - thanks. So breather, new bush and O ring it is! I'll report back when its all done  :-)
Title: Re: Gear lever shaft oil leak - best solution?
Post by: duTch on 23.07. 2018 23:51

 So, t20- how'd you get on with that ? I'm searching for the photo that (I'm sure) Orabanda posted for the location of his breather behind the Kick 'quadrant' (~thirdrant *conf*)...

 I went to a bike shop and bought the little breather thing a while ago (they had to order it in, but better than paying unnecessary postage), and unexpectedly have the cover off now so now dealing with it...

 
Title: Re: Gear lever shaft oil leak - best solution?
Post by: kiwipom on 24.07. 2018 03:07
This one was machined to accept an O ring.
Good idea and easily done, cheers
Title: Re: Gear lever shaft oil leak - best solution?
Post by: duTch on 24.07. 2018 09:44

 
Quote
This one was machined to accept an O ring.

 I can't remember from the rebuild, but found that mine has been done also- maybe I did it back in the first build  *dunno*, seems to need a ??mm x??mm 'O' ring  *conf2* -I'll be back on that... *beer*