gearbox rear oil seal

[Boxer04]

Hi,

My 04 R1150R was in for an inspection before a 5500km run recently. The mechanic said I had a small oil weep from the rear gearbox seal. Not going to cause a major problem on the run he said. I took a light and noted the amount of 'weep". Mainly a small oil smear on the boot and a bit of a dirty mark on the gearbox. No oil drips or marks on the swing arm or running down the gearbox.

The bike was serviced at 31000km and no comment about a weep noted. The weep was noted at an inspection done at 36000km.

After the tour there does not appear to be any increase in the dirty area around the rubber boot. Oil level in the box appears just below the threads but i looked at this cold - I will have to look at warmed up.

Anyone else had rear gearbox seal problems?

The bike is under extended warranty and i possibly could get this fixed if they agree the problem still exists. There are a lot of components to be distrubed to do the rear seal and as the bike runs like a swiss watch at the moment (approx 43000km) I am a bit reluctant to have it tampered with.

What do you think?

[Arbee]

Is the gearbox oil fully synthetic?
That will do it.

[chris]

Mine's been weeping for a few thousand K's on and off. Sometimes there's a little, sometimes a lot, sometimes it's dry!
It'll go eventually and I'll have to cough up. In your situation however, I'd be in there arguing for a fix while the warranty still stands!

[riceburner]

Get it fixed - it's a known issue.


that said - you're not going to lose much oil whatever, (IIRC) the seal is mostly above the level of the oil.

[Boxer04]

Folks,

Thankyou for your advice. It is appreciated. I'll get it fixed as I intend keeping the bike.

[renagade]

Hi Lad's and Lass's
I too after a very fast long run found the oil stain on the rear drive unit.
I call at my BMW dealer (Rainbow in the UK ) to puchase a seal. On telling the techy guy what my problem was he said '' You don't need a new seal as the new seal will go bad on you quite quickley all you need to do is change out the plastic tie raps for the s/steel jubalee clip which has the abilaty to tighten up a bit more that the plastic tie rap.''
I was then told that it would be OK to have a look at the bellows on a service and just clean the oil out of the bellows.
So that is what I am doing at present as it cost's a lot of $/£ to get BMW to fix .

[Biff's R]

I have had trouble with the final drive seal, and the seal around the output shaft of the transmission. It has been fixed under warranty.