b**tard brakes

[northernboxer]

noticed today a very small amount of brake fluid around the rear brake master cylinder where the rubber pipe from the reservoir joins it.managed to get my hands on a new seal and length of pipe(which had a small split in it.)rebuilt the whole thing, then the fun started.
the bike has abs servo brakes and can i bleed them
can i the hell
i now have no rear brake pedal pressure and when i start the bike the general warning light(! in a triangle) and the abs warning light flash alternate.
been bleeding the stupid thing all afternoon to no avail
feel like takin it to the dealer to sort out,
but i know he will

[oyster]

On early ABS, the ABS pump had to be bled first; rearward bleed nipple on unit - under the tank. Then the calliper. I suspect it might be the same for servo units.

[nab 301]

My bike is pre servo brakes but some info here
viewtopic.php?t=5449&start=0

The servo reservoirs may need topping up ? They're independent from the master cylinders.
Plenty of info also on the "ahem" gs forum

Nigel B

[sandbar]

has abs servo brakes and can i bleed them
can i the hell

I seem to remember a post on here recently about how easy it is to bleed the ABS servo brakes. He gave instructions about how to do it as well!!

It was from the guy who is always going on about how the R1200S is not a sport tourer.

sandbar

[PBBoxer]

Gary if you have further problems, I think my mate can do it. He does his anyway

[sandbar]

I seem to remember a post on here recently about how easy it is to bleed the ABS servo brakes. He gave instructions about how to do it as well!!

There you go - found it!

viewtopic.php?t=5264&postdays=0&postorder=asc&start=45

the info is in three or four posts from Feb 26th.

sandbar

[Nick]

Hi Northern Boxer I have the Pdf for this operation

I have sent you an e mail

regards

[northernboxer]

thanks nick

i'll have a look at it when i get home

stuck at work right now

[Steptoe]

the bike has abs servo brakes and can i bleed them
can i the hell
i now have no rear brake pedal pressure and when i start the bike the general warning light(! in a triangle) and the abs warning light flash alternate.
:

You've emptied the rear servo unit of brake fluid. The servo brakes aren't bled in the same way as other brake systems.

[Nick]

Hi Northern boxer have sent you the email

[northernboxer]

bled the brakes today, turned out to be a doddle once you know what your doing

after removing bodywork and tank,

1/ top up master cylinder reservior
2/ undo bleed nipple on abs unit
3/ pump brake lever,keeping eye on fluid level in master cylinder reservior,tighten bleed nipple when no more air bubbles
4/ undo bleed nipple on caliper and turn on ignition,press brake lever,servo forces brake fluid out of bleed nipple,this time keep an eye on fluid level on abs unit.(allen key cap).when no air bubbles tighten nipple.

only problem is that the abs unit has 6 bleed nipples,dont know which one does which,i just bled the whole lot (front and back brakes)

now very happy with the result,all new brake fluid,rock hard lever and pedal and no flashing abs/warning lights

[northernboxer]

thanks nick for the pdf file,downloaded and saved to the computer for future ref.

think you may have found it on this site.

http://advwisdom.hogranch.com/Wisdom/

had a look through it and its full of useful info on all aspects of maintanance. thanks pal

[Nick]

No Problem sorry that I had forgotten to update my e mail address change on this site.

I have the full Bmw workshop manual for the 1100s in pdf if you want that as well