Master Cylinder Rebuild - How to Remove Secondary Piston?

[Fleetw00d]

Anyone ever attempted to rebuild a master cylinder? Ruby's gets soft after driving a while. I have a spare used one and rebuild kits are available (primary and secondary pistons still show as available from Honda!). Just wanted to see how doable it is.

I removed the snap ring and the primary piston came out easily. I can't figure out how to remove the secondary piston.

Edit: Never mind. There is a screw in the side between the ports; remove that and the secondary piston will come out. Also talked to my local dealer, he shows the pistons as discontinued or on back order (which usually means no longer available).

[Fleetw00d]

Rebuild was easy; used a Raybestos kit from RockAuto. Remove the screw, remove the secondary piston, clean/check the condition of the bore, install new secondary piston, install screw, install primary piston, install retaining ring, bench bleed the master cylinder, install master cylinder with new seal to booster. Carefully bleed the brakes. Rock hard pedal!