Speedo cable leaking oil

[J2Bs]

IMG_6288.jpg

Did the drive gear have a groove worn into the smooth part of the shaft? That may prevent a good seal.

Hi Roger, and others.
Yes, I think you could say there is somewhat of a groove. Guess I'll replace it and see what happens. I'm checking the breather hose too, to ensure it does breath and isn't blocked.
Thanks for your guidance all.

[JTGS850GL]

That tachometer drive is shot and needs to be replaced. You should be able to still use the seals you replaced.

[Burque73]

[ATTACH=CONFIG]50751[/ATTACH]

Hi Roger, and others.
Yes, I think you could say there is somewhat of a groove. Guess I'll replace it and see what happens. I'm checking the breather hose too, to ensure it does breath and isn't blocked.
Thanks for your guidance all.

That is a problem that has come up on this forum a whole bunch of times and also with the two most recent GS's I've owned. It sure is nice to have this GSR group, Basscliff's site and tutorials on repairs like Bwringer (in post #5 here) has prepared. Here's another resource from Mr Bwringer that's chock full of goodies! I should have mentioned all of that in the first place, but better late than never.

Cheers!

[J2Bs]

That is a problem that has come up on this forum a whole bunch of times and also with the two most recent GS's I've owned. It sure is nice to have this GSR group, Basscliff's site and tutorials on repairs like Bwringer (in post #5 here) has prepared. Here's another resource from Mr Bwringer that's chock full of goodies! I should have mentioned all of that in the first place, but better late than never.

Cheers!

Thanks again Roger. Indeed, I've been savouring Bwringer's site (and following some tips) but Bassiff's is new.
Over the weekend I attached the breather hose (that was only attached to the crank case) to the air filter and the leak from the tach cable has gone. I assume the attachment to the air filter is helping the breather do what it's supposed to and the pressure no longer needs to escape from the tach driver.
I replace the tach driver anyway. Is it recommended to replace the sleeve at the same time?

[Burque73]

That's great, no more leak! There was some discussion in another thread within the last week about the breather if you're interested to read it.

Surely you saw the shop service manuals on Cliff's page. I'd see if there's a recommended interval to change out that sleeve listed. Personally, if the seals fit tight and there's no slop while spinning it in my hand I'd just change the drive gear and seals. Plus, the oil leak is gone so there's a good sign it's still ok.