Disassembly (Tandem Piston Unit)

Remove master cylinder as previously outlined. Drain and discard fluid. Remove screws attaching reservoir-to-cylinder. Depress push rod, remove snap ring and withdraw push rod with abutment plate. Use an Allen wrench to unscrew tipping valve securing nut and remove seal. Depress primary plunger and remove tipping valve. Remove internal parts either with compressed air to end inlet or by shaking cylinder body. Separate plunger and intermediate spring. Lift leaf of spring retainer, remove spring and center valve sub-assembly from secondary plunger. From valve stem, remove spring, valve spacer, spring washer and valve seal. Remove seals from primary and secondary plungers.