Bleeding brakes K1200LT - BMW Luxury Touring Community
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Old May 5th, 2008, 7:59 am
Caveno Caveno is offline
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Bleeding brakes K1200LT

Hi - I have a 2002 K1200LT.

I went to change the front brake pads and when I split the caliper apart to remove it from the front wheel, some brake fluid leaked out. I attempted to bleed the brakes from the valve under the seat but my front brakes still don't work, though they are not as spongy as they were. Also, my brake light and the engine warning light's are on. I dug myself into a whole here.

On some of the forums they mention another reservoir under the seat, but I don't see it, I just see the one for the back brakes. I have two reservoir's on the handlebar for the front breaks and I made sure those are full and no air went into the brake line from the master cylinders.

Thanks a lot.
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Old May 5th, 2008, 10:06 am
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jzeiler jzeiler is offline
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Re: Bleeding brakes K1200LT

First off never split the calipers. You can remove them by forcing the pistons back and they will then slide off. But you don't even need to remove them to replace the pads as they come out the back side of the calipers. Ok now to the fix.


The front brakes are fed from one of the two chambers in the rear reservoir. It is just behind the right saddle bag. There are two fill caps, one for each chamber.

The front reservoir does not feed the front brakes, it is just the control circuit that provides an input to the ABS unit.

Fill the rear reservoir and run a hose from the front caliper back to the rear reservoir. Open the bleed valve and turn on the key and hit the front brake lever. It will pump from the reservoir to the caliper and via the hose back to the reservoir. Once all the bubbles are gone you should be OK.

The flashing lights will go out after the roll test if you have fixed your problem.
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2009 R1200GS
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Last edited by jzeiler; May 5th, 2008 at 10:15 am.
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Old May 5th, 2008, 10:07 am
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vernvernvern vernvernvern is offline
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Thumbs up Re: Bleeding brakes K1200LT

You didn't need to remove the caliper to replace the pads.

However, since you have a leak near the pads , I'd say you'll need a new kit to replace seals in the caliper. That might be a good mechanics job if you aren't comfortable doing it.

Just my .02 cents worth.

By the way..........good safe brakes are important to me!
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Old May 5th, 2008, 10:39 am
Caveno Caveno is offline
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Re: Bleeding brakes K1200LT

Thanks a lot for your help.
I don't see the rear reservoir, I only see the one for the rear brakes which is under the seat on the back right side, is that what you're talking about?

Thanks.
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Old May 5th, 2008, 11:42 am
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BecketMa BecketMa is offline
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Re: Bleeding brakes K1200LT

On the 99 and 00, the front brake has the reservoir on the handle bars.
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Old May 5th, 2008, 11:51 am
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BecketMa BecketMa is offline
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Re: Bleeding brakes K1200LT

Here you go:
http://www.bmwlt.com/forums/showthread.php?t=35420
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Old May 5th, 2008, 12:45 pm
Caveno Caveno is offline
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Re: Bleeding brakes K1200LT

This is a 2002 LT w the servo assist system.
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Old May 5th, 2008, 2:40 pm
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jzeiler jzeiler is offline
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Re: Bleeding brakes K1200LT

The one under the seat is correct. There are two chambers, one feeds the rear wheel and control circuit and one feeds the front wheel circuit. there are two fill caps and two level sensors. You may have to undo the right side battery cover body work (two screws at the front of the saddle bag when opened) to gain access to both chambers. The front wheel circuit is the chamber to the rear (hardest to get to).

This should help.
Attached Files
File Type: pdf Brakes.pdf (446.2 KB, 226 views)
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2009 R1200GS
2005 Ocean Blue Blue Wizard
2006 Bushtec Turbo+2 Spell
2004 330 Ci Convertable
K4AN


CCR 06 Braselton CCR 07 Osage Beach CCR 08 Midway
CCR 09 Rapid City CCR 10 Killington, VT,CCR 11 Boise, CCR 12 Duluth
CCR 2013 Bend, CCR 2014 Backyard!

Last edited by jzeiler; May 5th, 2008 at 2:45 pm.
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