Looking for ANYONE with similiar brake problem.

[Radman]

This is in regards to my R1150RT 2002
I'm looking for anyone that has had this problem or similiar. My dealer is clueless, and has no idea what is wrong. In fact, they can't even identify the symptoms. They know of no other report similiar to mine. I need information because the dealer can't fix it, and I'm not very confident about these brakes.

I noticed this problem a couple months ago. Didn't think much of it, in fact I thought it was me. Some of you are aware how sensitive '02RT brakes are at slow speeds, and I thought I was just not finessing the brakes properly.

I finally caught on to what was happening. The brakes release, momentarily, at speeds 20-25mph or less, while I am braking moderate to lightly.
Example: Your approaching a stop sign applying light braking for the traffic ahead. Suddenly, without warning, the bike lurches forward as the brakes release, and just as quickly the brakes are back on.
This is not bumps or gravel. I verified it by running in gear and applying light to moderate braking, and maintaining 15 -20 mph. The bike would lurch every time the brakes kicked off/on. It never stays off, just off/on, about as fast as your reading this. This symptom does not occur at every stop, but is intermittent. It doesn't seem to do it at higher speeds, but it did do it once at about 40mph. It occurs on clean, dry, flat pavement.

My dealer replaced the brake ABS module/pump about three weeks ago. The problem seemed fixed, but resurfaced. I'm told there is nothing they can do. Bike is under warranty.
I'm looking for ANYONE that has had a similiar problem.

Maybe I should have said hello first.
Thanx, Rick

 

[richie]

Sounds like your ABS ring has a tooth missing. Have a good look..

 

[littleredrooster]

Would tend to suspect ABS ring, ABS sensor, ABS sensor wiring to module, in that order.

Good luck - I think you're gonna need it with this one.

Hullo, by the way!!

 

[leigh]

Ok,earlier bikes are fitted with a different diameter rear brake master cylinder.On bikes that have had to have a modulator changed the later master cylinder has to be fitted.Also if the brake switches are badly adjusted this can cause the brakes to manifest the symptons you have described.try adjusting the brake rod on the rear brake so that you have about 1 to 2mm of free play before it touches the piston in the master cylinder.This will activate the brake switch earlier which in turn sets the pump running before braking force is applied

 

[Radman]

Leigh could you elaborate a bit?

earlier bikes are fitted with a different diameter rear brake master cylinder.On bikes that have had to have a modulator changed the later master cylinder has to be fitted.

Are you refering to the rear brake caliper? If so, do you know specifically, what years require this? I have an early model 2002RT. I can only assume, until I inquire with the dealer, that they replaced ALL the appropriate parts when they installed the new ABS modulator.

If you know of a reference where this information is found, I'd appreciate the the pointer.

 

[leigh]

Radman
sent you a mail
regards
Leigh