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An effective way to remove the piston is to let the fluid due the work. I had my son work the brake pedal to eject the piston, while I held the piston wrapped in shop towels to catch any mess. Beats marring the piston with pliers. Since nothing in the hydraulics compresses, there is no big spurt when the piston finally works free, but have a container to dump the cylinder full of brake fluid into when done. Also make sure you keep the reservior full while doing this. Don't want air in the line.
An effective way to remove the piston is to let the fluid due the work. I had my son work the brake pedal to eject the piston, while I held the piston wrapped in shop towels to catch any mess. Beats marring the piston with pliers. Since nothing in the hydraulics compresses, there is no big spurt when the piston finally works free, but have a container to dump the cylinder full of brake fluid into when done. Also make sure you keep the reservior full while doing this. Don't want air in the line.
