Tech Talks Presented by Park Tool is a monthly video series hosted by Park Tool's own wrench whisperer, Calvin Jones. The series covers the A to Zs of some of the most prevalent repair jobs, with the fifteenth episode showing you how to cure sticky brake pistons.
The disc brake has been one of the most important products of the last few decades, but they're far from perfect. Like most things, they require some love every once in awhile, and if you don't give them some attention, they can work poorly or even start slowing you down when you don't want them to. When brake pistons don't retract back into the caliper, it's often because of a corrupted surface on the piston that rides back and forth on the seal. And if it gets really nasty, one or both of the pistons may decide to stop moving altogether. Park Tool's Calvin Jones is here to show you how to use a strip of cotton and some solvent to fix those troublesome pistons.
Fixing Sticky Caliper Pistons
Need more Calvin in your life? Episode #1 - Tubeless tire installation and conversion Episode #2 - Saving that bent disc rotorEpisode #3 - Derailleur hanger alignmentEpisode #4 - Shimano and Crankbrothers pedal serviceEpisode #5 - Trailside wheel repairEpisode #6 - Trailside chain repair Episode #7 - Derailleur limits and cable tensionEpisode #8 - Derailleur setupEpisode #9 - Fork wiper seal replacement Episode #10 - Clipless pedal setupEpisode #11 - New cleat setupEpisode #12 - Top 5 next level shifting issuesEpisode #13 - Fixing cassette playEpisode #14 - Gearing hacks
Stay tuned for more mechanical how-to videos with Calvin returning on the last Thursday of every month to show you the easiest way to get the job done. Want to know more? Park Tool's how-to section
has you and your bike covered. www.parktool.com