Oil Leak Drive Shaft

[basadia]

I recently replaced the oil in my drive shaft and after it was filled the bike developed and oil leak at the front of the drive shaft but only after a long or fast run. Has anyone seen this issue before?
Not sure if I need to remove the shaft and check for faulty oil seals, the other thing that comes to mind is the breather which if blocked could cause the leak due to heat build up in the shaft.
Any suggestions appreciated.
cheers
Keith
 

[saaz]

The oil is for the diff gears and does not go into the shaft itself.  If it only happened after changing the oil I would suspect something to do with excessive oil level or the type of oil. Differential and not gearbox oil should be used, GL4/5 rated.  There should not be a build up in pressure if the breather is working.

Otherwise perhaps it is just coincidence and a seal is leaking, but this is very uncommon, or at least hardly anyone reports a problem.

[Brock]

As SAAZ has said, the drive shaft is dry. The final drive only holds 30cc of hypoy 80 gear oil.

If there is oil at the front of the shaft, then there may be a slight leak at the engine output seal.

[basadia]

Funny that the leak only appeared after I replaced the oil in the diff and the leak showed up around the front foot peg. Maybe the oil is leaking at the diff and runnng down the drive shaft to the lowest point on the bike.
Might need to have a better look.

[saaz]

I would have a look at the rear of the bike, as mine has the slightest of weeps from around the alternator that does not drip, but I degrease when I remember.  Leaks around there are known to happen.

[Greencan]

I would have a look at the rear of the bike, as mine has the slightest of weeps from around the alternator that does not drip, but I degrease when I remember.  Leaks around there are known to happen.

TRUE John , but that's on the left...isn't this Chap saying the leak is on the drive side...the right? My blue bike to has a self lubricating gear lever...hope you manage to get it a quick wipe over for me last Friday ...but I haven't seen the weep make it's way to the starboard side

Basadia, permission to ask a silly question...the bike was on the centre and not the side stand when you undertook changing the final drive oil...yes? If the origin of the weep is on the right side it does sound as if the final drive is perhaps over lubricated...much like I was on Saturday nite

Just a thought,

Ciao, the can :)