2003 Polaris ATV Trail Boss 330 Factory Service Manual, Page 149Get this manual
FINAL DRIVE 4Install foam seal and axle nut lock sleeve with taper toward nutInstall snap ring to retain the lock sleeve4Install foam seal (C) and slide lock sleeve (B) onto hub and install lock sleeve with taper inwardInstall snap ring (A)
Foam Seal Snap Ring
Lock Sleeve (Tapered side toward nut)
C 5Install brake caliper and drive chainAdjust drive chain (refer to Maintenance Chapter for procedure)Torque eccentric pinch bolts to 30 ftlbs(41 Nm) on models without trailer hitch, or 40 ftlbs(55 Nm) on models with trailer hitchVerify proper chain adjustment after torquing eccentric
CONCENTRIC SWINGARM REAR AXLE INSTALLATION