Pushing out a seized brake piston

[Heath]

Had a sticky brake piston in the calipers I am rebuilding. Tried everything heat etc.

Surfed the net and found a method using grease gun to presurise the caliper and push the piston out. After another hour of mucking around I figured other than spending money and someone else doing it I would give it a crack.

BUGGER ME it worked. Real slow but simple as pie. Just messy and used a bit of grease to do it. So another problem resolved.

Google "seized brake piston grease gun method" for how to do it.

Now I just need to get some new pistons and seals etc. Might give rare spares and Gasson motors a ring (and safe r brakes too) and see what they have.

[johnny262]

Yeah mate good old school trick, if your really lucky theyll blow out with an air gun

[aroma]

also try undercar just before sockburn overbridge

[Big]

overnight wd40 around piston then blow it out..

[Heath]

Tried soaking for 3 days, heating, tapping with hammer, hitting with hammer harder. More heat and crc, compressed air (worked for other one) more tapping and finally the grease gun method.

[mercutio]

track adjusters on diggers use grease to hold the tension

[Mehrts]

Handy tip to know as I'm about to tackle my calipers in the next couple of weeks.

[Mattman]

Also works on spigot bearings.

[wjw]

Yeah mate good old school trick, if your really lucky theyll blow out with an air gun

First time I didnt wrap it, its amazing how fast they fly across the workshop

[tonyl]

or keep pumping the brake pedal with the caliper hanging in a bucket before removing the brake hose

[nivaman]

Could use bread as well, I use bread on spigot bearings, much less messy than grease.