Right side front brake problem

[Shayite]

Hello

The pistons are appearing not to release properly causing pads to drag on disc which is slowing the bike down I've taken caliper apart, rebled, regreased and cleaned slider pins and cleaned rest up but same problem stil occurs.

Any more ideas?

[jarl]

Did you do the piston seals? Often corrossion can form behind the seals pushing them into the pistons and preventing the pistons from returning properly.

[Shayite]

No I didn't! Thanks this may be the solution I'm looking for!

[StumpyFingers]

I had that problem with my righthand caliper, a piston had seized and I had to completely rebuild the caliper with new seals and pistons, works a treat now.

[davedixon]

I had this problem with my 400/4. When I replaced the caliper seal all was fine.