2003 Polaris ATV Trail Boss 330 Factory Service Manual, Page 150Get this manual
FINAL DRIVE
CONCENTRIC SWINGARM REAR AXLE EXPLODED VIEW
Left Axle Nut (120 ftlbs(163 Nm) Foam Seal Snap Ring Disc Hub Lock Collar Stop Ring Seal Sleeve O-Ring Seal Brake Disc
Bearing Bearing Race Eccentric Housing Grease Fitting
Left side of axle identified by groove in spline