What do you use for resetting your brake pistons?
I usually use the brake blocks and sometimes use a rubber mallet to hammer them in to push the pistons back in if I can’t get the block in by hand. Works sometimes but other times I need to then bleed the brake. One tip I was given to stop the pistons sticking was to get them out a bit then rub some brake fluid on them with a cotton bud. I run avids and they get stuck all the time 🙁Posted 4 years ago
I changed the pads on my RX’s last weekend and there’s not enough space for the rotor with the new pads in.
So I put the old pads back in and got my big (8mm) screwdriver out and gave it a twist – nothing happened.
Do I need a wider bladed screwdriver? I though about using a chisel but it is too thick, do you have any tips that will help?
Thanks 🙂Posted 4 years agoBiscuit PoweredMember
OP… From the sounds of your post the pistons are not fully retracted?
If they’re fully retracted flush with the caliper body and you still cant get the disc between the new pads then clearly it’s a thick pad issue.
If the pistons are not fully retracted then sanding off friction material you’ve paid good money for to make up for it is just daft.
If you’re applying pressure with your screwdriver and the pistons wont go back as far as theyre supposed to then there’s probably too much fluid in the system. Bleed the brakes with the pistons pushed fully back and restrained there.Posted 4 years agofandangoMember
I’ve just changed the pads on my Rx brakes… leave the old pads in situ, and lever apart with the widest flat screw driver you have. There’s quuite a gap you need to make before you can easily insert fresh (superstar in my case) pads with enough clearance for the rota as well.Posted 4 years ago
I’ll try cleaning them first with as the pad was very worn and it’s been ridden through Epping filth all winter. So it’s just the return as they were braking fine.
Then I’ll try again.
@ Tracy, where can I got one of those Pedros levers from? I’ve done a search and nothing’s come up.Posted 4 years agolumpSubscriber
@ Tracy, where can I got one of those Pedros levers from? I’ve done a search and nothing’s come up.
http://www.chainreactioncycles.com/Models.aspx?ModelID=10021&_$ja=kw:%2bPedros%20%2bDownhill%20%2bLever|cgn:Pedros-XX-XX-XX-ModelID%3d10021+-Posted 4 years agoLord Felcham the IIIMember
Park Tool blue placcy tyre levers, the thin ens, not the wide boys. I find the weird curved end bit fits nicely into the recess of the piston, rage the pads out, you’ll muller them if you use anything ont eh pad.
Or, leave the pads in and press on the back of the pad to push in the opposite side pistonPosted 4 years ago
The topic ‘What do you use for resetting your brake pistons?’ is closed to new replies.