rear brake

Hi guys, 
I recently had me rear-brake cylinder revised by an expert. Got it back, mounted it back on, vented the line and cheked everything. Looked good.

I then decided to do a short ride to check. Bike on the main-stand, engined started. I then noticed that the rear wheel did not turn, as it usually does in neutral. I feared that there is an dditional issue with the rear-brake and did a short trip to check if the rear brake disc gets hot (I used to have an issue before the rear brake cylinder had been revised).

Any ideas, thoughts, advice ?
Thanks, Holger

Did it get hot?  Can you spin it freely on the centerstand?  If it doesn't move freely, your calipers are sticking and need cleaning.  It's pretty easy to do and disassembly is in the service manual.

For many years I was intimidated by brake systems, then I retired and decided to learn.  I learned that it is very easy and it's embarrassing to think what I used to pay other people to repair my brakes over the years, but that also applies to other repairs and tuneups for that matter.

One or both of the pads are dragging on the rotor. Since it's a 2 piston caliper, the caliper is fixed mounted and not floating on pins.


First try to pry back the pistons back into the caliper. They should move back fairly easily. if they don't retract, it maybe because the master cylinder linkage is not adjusted right. There's a relief port in the master cylinder that is exposed when the master cylinder piston is retracted and that port relieves the brake fluid pressure on the caliper back into the reservoir. If you can't pry back the caliper pistons, first try breaking a joint in the brake line and then try retracing the pistons. if then they retract, you know that the relief port in the master is not open. and you need to look at the linkage adjustment.

if the piston are stiff to retract, then the pistons may be partially seized in the calipers and need servicing.

I have sorted it out. Took a longer ride. Engine got hot, brake disc stayed cool. Just as I wished for.
Thanks guys.
Holger