Brake caliper rebuild I've rebuilt a half dozen calipers. I never spent a cent on one. I took them apart, dug the sq oring out as gently as I could. They still looked resilient so I cleaned them off with either fine steel wool or 320 grit paper. I dug the corrosion out of the square groove as best I small circular wire wheel is good with a dremel. I silicone sealed the backside of the oring into the groove. I wasn't concerned about any pitting or anything on the piston, although I cleaned off any high spots with sandpaper or file. I reused the oring and outer seal even when the outer seal wasn't very good. I put the bad part up. That's how I did it. Brake bleeding for motorcycles Brake and hyd clutch bleeding is usually very difficult on motorcycles vs cars. I suppose it's because there is so much vertical distant in a short length that an air bubble can rise faster than it can be forced down and out the lower bleed valve. The first important note is, if doin...