I took 2 front calipers from a 91 Virago, 2 pistons each, apart and cleaned them and reassembled in approximately 1 1/2 - 2 hours today. Bleeding took about 20 minutes.
If that piston is REALLY stuck you'll need some good air pressure to blow it out of there, or just remove the caliper from the bike and leave the hose connected, take the pads out, and use the master cylinder to pump it apart.
Messy but efficient
If that piston is REALLY stuck you'll need some good air pressure to blow it out of there, or just remove the caliper from the bike and leave the hose connected, take the pads out, and use the master cylinder to pump it apart.
Messy but efficient
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