2005-2008 Honda ATV TRX500FA/FGA Fourtrax, Rubicon Factory Service Manual, Page 328Get this manual
BRAKE SYSTEM Remove the master piston, primary cup, spring and oil sealOIL SEAL SPRING PISTON
PRIMARY CUP
SECONDARY CUP
INSPECTION
Check the piston boot, primary cup and secondary cup for fatigue or damageMeasure the master cylinder I.DSERVICE LIMIT: 14.055 mm (0.5533 in) Measure the master cylinder piston O.DSERVICE LIMIT: 13.945 mm (0.5490 in)
ASSEMBLY