xlr 250 sticking brakes

[jon]

Hi got a problem with my front brake.
I have just fitted new pads,the old ones were down to the metal !
(ive only had bike a few months)
When i out it all back together everything is fine but after a few miles the brakes start sticking on...so much so i cant even turn the front wheel.

Any i deas what could be causing this???

Cheers jon

[catteeclan]

Most likely is a sticky caliper piston.

[Bill Badger]

It could be that the pins on which the caliper are allowed to float are seized. If it is, you need to remove the caliper from the bracket and clean up the pins. This may be difficult. as it was on mine. I had to drill a hole in the end of the tube that the pin is supposed to slide in and use a drift to knock out the pin. It may be that only one pin is seized, but whether it is one or both, it may take an afternoon or so to do it. In the seized state, the caliper cannot centralise about the disc, so one side becomes more efficient than the other, and hence the uneven pad wear.

Clean up the pins once you have it apart, lubricate with copper grease, and all should be well.

[jon]

Thanks for the help..have stripped them down ..just waiting for some new seals to be delivered and should hopefuul go back together ok.

Can anyone tell me what do i lubricate the pistons with before i put them back in the calipers?Is brake fluid ok? best?

Cheers jon

[catteeclan]

Make sure you clean out the groves in the caliper where the seals seat.

Rubber grease is best but brake fluid's better than nothing.

[jon]

Excellent thanks for all the help..all back together and working better than ever before...and just went through mot too...

cheers jon