2012 Sportsman 400/500 and EFI Tractor Service Manual 9923412, Page 268Get this manual
FINAL DRIVE 7Remove the roll cage assembly, rollers, and ring gearInspect for wear10Inspect the ring gear (C) for inconsistent wear patterns or damageThe surfaces should be free of nicks or burrs11Inspect roll cage (B) sliding surfaceThis surface must be clean and free of nicks, burrs or scratchesInspect the H-springs, but do not remove them from the roll cage
H-Spring
8Remove the LH output hubInspect the bearing and contact surfaces of the output hub for signs of wear or damageReplace component if found to be worn or damaged12Inspect the armature plate for consistent wear patternUneven wear of the armature plate indicates warped plate, which may cause intermittent operationNOTE: See "FRONT GEARCASE DIAGNOSIS" later in this chapter for more details