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Gearbox oil leak - selector shaft

Posted: 04 Jun 2015, 10:09
by fodtommo
Hi All

I recently had to remove the gearbox to do a clutch change along with release arm and associated components.

While the box was out I gave it a good clean and changed all the seals - input shaft seal, drive hub seals and selector shaft seal.

When i first put it back it leaked from the bell housing... this was down myself and my mate both thinking the other one of us had fitted the new spigot bearing... :shock:

So Tuesday pulled the box again and fitted the spigot as well as new input shaft seal from Brickwerks (GSF one was awful)

I have put it all back and input shaft is now not leaking :) but there seems to be a leak from the selector shaft now - and it wasnt there when I had the leak from the bellhousing...

Has anyone had this issue before?

I did push the bracket that the linkage rod runs through up as far as I could before bolting it up as the gear change seemed a bit better in that position... could this be pushing the selector shaft in the box upwards a bit and allowing oil to seep past? (i know it needs a rebuild kit for the linkage / gearstick, but i need to get paid again before that gets done!)

Any thoughts gratefully recieved...

Re: Gearbox oil leak - selector shaft

Posted: 05 Jun 2015, 13:42
by Simon Baxter
Is the breather hole bloked?

Re: Gearbox oil leak - selector shaft

Posted: 06 Jun 2015, 09:06
by fodtommo
Excuse my ignorance... but where is the breather hole

Re: Gearbox oil leak - selector shaft

Posted: 06 Jun 2015, 11:04
by CovKid
On the nose of the gearbox. Its not huge. Need a torch and good eyes.

Re: Gearbox oil leak - selector shaft

Posted: 07 Jun 2015, 05:58
by fodtommo
Thanks guys! I guess it must be blocked as I had the box on its end to change the input seal the 2nd time and didn't drain the oil... nothing leaked. ... I will investigate! !

Re: Gearbox oil leak - selector shaft

Posted: 08 Jun 2015, 09:35
by fodtommo
OK

Well leak seems to be sorted, originally I had bought the non OEM seal from brickworks which is a standard type Ellring oil seal, however it is quite a different design to the OEM blue one which I bought subsequently and seems to seal much more effectively. When I bought it I didn't notice the OEM one! anyway it seems to be sorted.

However... I cant find the breather hole at all!!! :? does anyone have a pic or diagram they could mark up so I could find it as I am pretty sure it must be blocked and im worried now!!

Thanks Guys :ok

Re: Gearbox oil leak - selector shaft

Posted: 08 Jun 2015, 11:41
by Oldiebut goodie
Nearside top by bolt on the nose - not hard to miss ....much, usually covered with the contents of Thomas Crapper's finest porcelain.

Image

Re: Gearbox oil leak - selector shaft

Posted: 08 Jun 2015, 13:20
by fodtommo
Thanks OBG :)...

I was looking much further back thanks to a very misleading pic on another thread!

Tom :ok