Possible developing oil leak?
 

I think I may have an oil leak from around the gearbox sprocket or gear change shaft, certainly on that side in that sort of area anyway. Are the Curvys known for any particular oil seal fails around there? Assuming it is one of them how bad a job is replacement?
Many thanks.

Re: Possible developing oil leak?
 

I've read somewhere about it running from one of the shafts or possibly clutch pushrod out of the engine (read it on here I think). Might be worth taking the sprock cover off to have a gander.

Re: Possible developing oil leak?
 

It could be worth checking that you haven't adjusted your chain too tightly, or at least one part is less stretched than the rest.
Reason I say is because I developed an oil leak from the sprocket area and it was the rubber sprocket seal that had moved enough to let oil out, after the chain had been adjusted. Brand new chain but half of it decided not to wear at the same rate as the other.

Was a head scratcher at the GM last year. Sat on the bike and the chain went so tight there was no movement. Backed it off and it has been fine since, as the sprocket seal re-seated itself.

Re: Possible developing oil leak?
 

Had you been training for the bobsled team? :razz:

Re: Possible developing oil leak?
 

phnar!
NO cheeky git!.
It was just the way the chain had worn in. Badly adjusted in the way it had only been looked at on one half, and we thought it needed it. The other half was too tight....suprised it didn;t do a Gr33k and snap on the motorway!

Re: Possible developing oil leak?
 

hehe, was only jokin that's why I wheel the bike til the tightest bit of the chain is under the swing arm then sit on it lean back and feel the slack.

Re: Possible developing oil leak?
 

Its ok for you, you have arms like apehangers..long!!

I knows you're kidding. But it wasn't me that adjusted it. It was Carnivore. Mind you it was him that told me what it was straight away, as soon as he saw the leak, without even looking at the chain. The evidence only backed up his first guess..jammy git!

Re: Possible developing oil leak?
 

Scottoiler turned up too high?
I;ve had this before where it's collected behind the front sprocket cover (still wet) and then dripped down looking like an oil leak.

Don't start you engine with the clutch push rod removed as it squirts out everywhere (D'oh)

Re: Possible developing oil leak?
 

Its definitely engine oil thats coming out. I cant work out if its the gearbox seal or the clutch pushrod one? I'll clean it up at the weekend and see which one it is. What sort of job is replacing these?

Re: Possible developing oil leak?
 

Oh yes it does, and boy does it go a *long* way!

Druid

Re: Possible developing oil leak?
 

Also loose front sprocket nut can let oil out, but then it tends to come out rather quickly!

Re: Possible developing oil leak?
 

As Yorkie says the seal for the front sprocket can leak if the sprocket is loose. Though I find it only a issue when your running the bike hard, say above 6k, as I've managed to leak on the motorway journey to work and then wonder why it stopped when I was bimbling round town.

Re: Possible developing oil leak?
 

Its worth noting again here that sprocket nuts do loosen over time, even when torqued up, locktited and properly lock washered!

(I think its actually wear rather than the nut loosens but the effect is the same).

Check your nuts every service!

Druid

Re: Possible developing oil leak?
 

This is the one you need to check -

http://farm4.static.flickr.com/3512/...62ef2720_m.jpg

Re: Possible developing oil leak?
 

Interesting. What with this, iffy brakes, new fork springs/oil, it looks like a busy weekend!

Thanks everyone.

Re: Possible developing oil leak?
 

Its iis loose and only held tightish by the washer thing. Anyone know the torque setting for this?

Re: Possible developing oil leak?
 

145 Nm per Haynes

Re: Possible developing oil leak?
 

Top man. Thank you. :)

Re: Possible developing oil leak?
 

Otherwise known as FT

Re: Possible developing oil leak?
 

See, told you it works its way loose!

Druid

Re: Possible developing oil leak?
 

Good morning all.


The lock washer should be changed every time a chain & sprocket is relplaced, & it's not a bad idea to replace the nut also, when changing a chain & sprockets. As, the factory loctite that comes applied to a new nut seems to do the job.
If re-using the old nut, one must remove all traces of the old Loctite from the nut & the threads on the shaft, & use a decent industrial Loctite.


Cheers.

Re: Possible developing oil leak?
 

I dunno about every time, I just bend each one up on opposite sides. 6 flats on the nut = new washer every 3 sprockets.

Re: Possible developing oil leak?
 

Replace? Replace? Nah.

Note this is my view, I can't be held responsible if your front sprocket falls off.

Re: Possible developing oil leak?
 

Bodger!!!!!:D

Re: Possible developing oil leak?
 

Another Bodger!!!!:D:D

Re: Possible developing oil leak?
 

http://memories-tv.com/bodger.jpg

:cheers:

Re: Possible developing oil leak?
 

lol bodger and badger

Re: Possible developing oil leak?
 

That's the trouble with these university types like Alpinestarhero, THEY CAN'T SPELL!!!:D

Re: Possible developing oil leak?
 

You certainly weren't wrong as it did it again! Bent both sides of the washer over properly this time though. Still didn't replace it mind!:rolleyes: