hydraulic disc brake adjustment

[John D9395]

I have recently bought a Giant Reign 1, and have a really annoying squeak from the rear.

I am convinced it is caused by one of the pads just catching the disc. The squeak always disappears when breaking, and the other day whilst out in the rain, it again disappeared. I assume the rain was providing some form of lubriucation.

I have fiddled with the adjusters on the handlebars, but this makes no difference.

I was wondering if there was any adjustment to where the pad goes back to when not braking, or is it all dependent on the fluid, i.e. I need to do something with the fluid to back the pad off the disc.

Any help appreciated

[Parsnip]

I dont know what brakes you have on there, but alligning the caliper might work for you.

Unscrew the caliper mounts so the caliper is loose, but still attached, spin the wheel, jam the brake on and retighten the caliper bolts with the brake still on. Should centre the rotor in the caliper and may fix your problem.

Alternativley, it might be a stuck piston, try pushing the piston(s) in with a flat screwdriver if they look like they are jammed out.

[John D9395]

Thanks for info, problem solved.

[cone]

"adjusting" the caliper to avoid pad rubbing may stop the rub but is not the answer , disc should be central in the caliper - then centralise the pads to the disc , gives a much better lever feel too .

[mk1fan]

Adjusting the calliper positiona as described in the first reply with new pads fitted should centralise the calliper. That said one calliper is always going to move first what ever you do.

[TedMaul]

Parsnip said:

Unscrew the caliper mounts so the caliper is loose, but still attached, spin the wheel, jam the brake on and retighten the caliper bolts with the brake still on. Should centre the rotor in the caliper and may fix your problem.

Now why the **** didn't I think of that whilst bedding in new pads in the Avids?? Great tip and I feel very daft..