1998-2004 Honda Foreman 450 factory service manual, Page 282Get this manual
BRAKE SYSTEM WHEEL CYLINDER! ADJUSTER INSPECTION Disassemble the wheel cylinder assembly and BInspect the wheel cylinder bore and piston for scoring or groovingInspect the piston cup and piston boot for wear or fatigueInspect he adjuster body and adjuster nut for wear or damageCheck the lock spring for fatigue or damageLOCK SPRING ADJUSTER PISTON CUP
Measure the wheel cylinder 1.0SERVICE LIMIT: 19.12 mm (0.753 in)
Measure the wheel cylinder piston 0.0SERVICE LIMIT: 18.81 mm (0.741 in)
FRONT BRAKE PANEL INSPECTION
Remove the wheel hub from the brake drum and temporarily install the hub on the axle shaftTighten the axle nut securelyInstall suitable steel plate to the wheel hub and tighten the plate with the wheel nut securelyClean any grease from the brake panel