K11 Owners Group

Che sera sera · Posted: Sat Sep 27, 2014 1:00 pm Post subject: Final drive output seal leaking

As title, my rear brake disc is getting covered in a film of oil after about 100 miles. I assume it's the bevel box output seal. Is this a home DIY job? I'm reasonable competent but don't have access to specialist tools like presses or air guns etc.

If not DIY, can anyone recommend a cost effective repair shop in GB (pref south east)?

Thanks for any advice.
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'96 K1100rs
'93 r1100rs (probably on the way out)

Inge K. · Posted: Sat Sep 27, 2014 6:18 pm Post subject:

http://www.k-bikes.com/forums/showthread.php?t=25587

Che sera sera · Posted: Sun Sep 28, 2014 6:54 am Post subject:

good link - thanks.

Is the input seal easy and worth doing at the same time as preventative maintenance or am I just asking for trouble? Thinking of getting a couple of the brake disc retaining screws to replace the ones that have to come out - anything else I should buy to do a proper job?

Thx again.
_________________
'96 K1100rs
'93 r1100rs (probably on the way out)

Inge K. · Posted: Sun Sep 28, 2014 10:47 am Post subject:

The input seal is a lot more tricky to change.

It sits a bit deep...inside a threaded ring, for better acces unscrew this ring, special tool needed.
And in front of this it's a big nut which is tightened with a rather high torque (200 Nm) and secured with Loctite........
when trying to undo this nut you gonna add words to your vocabulary
and you have to lock the FD gears/housing when unscrewing and mounting this nut.

If the seal don't leak, I would leave it alone.

Che sera sera · Posted: Mon Sep 29, 2014 8:24 am Post subject:

Great, thx again. Will just invest in the output seal for now and commit to a few hours of garage fun. Although, probably ought to invest in a new set of brake pads as sell, since mine have had a thorough soaking in 75/90.

Cheers
_________________
'96 K1100rs
'93 r1100rs (probably on the way out)