2008 Polaris ATV Predator 50, Sportsman Outlaw 90 Service Manual, Page 132Get this manual
BRAKES 5Inspect the outer seal and outer bearing for wear or damageBrake Drum Backing Plate Removal 7Bearing If service is required to backing plate components, remove the cotter pin retaining the backing plate to the spindle
Cotter Pin Seal
Flip the wheel hub and inspect the inner seal and inner bearing for wear or damage8Bearing Remove the backing plate assembly from the spindle shaft assembly