Bleeding Integrated ABS Front Control line - BMW Luxury Touring Community
 
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post #1 of 4 Old Jun 3rd, 2010, 8:10 am Thread Starter
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Bleeding Integrated ABS Front Control line

My 2002 K1200LT (with integrated ABS) recently blew the front brake line just above the "T" junction on the front fork like so many others on this forum. As this happened close to home several miles away from a BMW dealership, I ordered a set of Spiegler stainless lines. After taking the tupperware off, I decided to not only replace the broken front brake line but I then also decided to change out the hose from the handlebar to its junction connection below the handlebar. As such, I now have air in the control line between the handlebar brake lever and the ABS pump. From the other posts in this forum it appears that I now have a problem that only a BMW shop can fix. Finally my question - is there any way I can properly bleed out the air from the front brake lever control line to the ABS unit without damaging the unit or must I pack up the bike on a trailer and haul it to the shop? I have not powered on the ABS unit since this repair started. If it is somehow possible for me to bleed this control line without damaging the ABS unit can someone send a link to a procedure for the bleeding. Thanks.
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post #2 of 4 Old Jun 3rd, 2010, 8:53 am
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Re: Bleeding Integrated ABS Front Control line

here ya go on the front page
http://www.bmwlt.com/forums/articles...rticle&artid=5

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post #3 of 4 Old Jun 3rd, 2010, 10:12 pm
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Re: Bleeding Integrated ABS Front Control line

Yes you can bleed the front control circuit. There are three bleed ports, two are very easy to get to and one is a bit tough as it is on the side of the ABS unit. All use a 7mm wrench (or socket). This should help you out Mark's Article . Now this only discusses fluid change and not a bleed but you should get most of the air out of the "tall" bleeder. Then there is a secondary one that is shorter and across the unit (under the "other" tall bleeder) from the tall one. If you have a good positive "feel" at the lever you should be OK. If not try the side bleeder (visible in the recess in the article pictures). You will have to use a socket on this one and just let the fluid drain out. Then go back to the tall one again for good measure. This should get you in with a good feel on the lever.

John
2009 K1300GT Red Rocket
2009 R1200GS (Gone)
2005 K1200LT Ocean Blue Blue Wizard 110 K and counting...
2006 Bushtec Turbo+2 Spell
2004 330 Ci Convertable
K4AN

Have ridden a Motorcycle in all 48
But lack DE, MA, RI and CT with the 2005 LT

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Last edited by jzeiler; Jun 3rd, 2010 at 10:18 pm.
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post #4 of 4 Old Jun 4th, 2010, 8:51 pm
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Re: Bleeding Integrated ABS Front Control line

UPDATE;


I made a slight error in the instructions. These ports (3 or 4) are on the left side of the ABS unit. The sequence for bleeding is the Fill adapter (1) (it has the grub screw in it right next to the ABS unit in the top line), followed by the metering cylinder (2) it is the little short one right under the long one.Then the integral circuit (3) and this is the one on the recess in the side of the ABS unit only this one is on the OTHER side (battery side). Then finish with the front control circuit (4) this is the long bleeder. Then back to the short one (#2) again. You don't need power on to do this.

Keep the reservoir full and lay a clean metal plate in there to cover the vent hole or it will squirt fluid up in the air. Cycle through the ports until all bubbles are gone.

John
2009 K1300GT Red Rocket
2009 R1200GS (Gone)
2005 K1200LT Ocean Blue Blue Wizard 110 K and counting...
2006 Bushtec Turbo+2 Spell
2004 330 Ci Convertable
K4AN

Have ridden a Motorcycle in all 48
But lack DE, MA, RI and CT with the 2005 LT

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