2001 Polaris Sportsman 400-500 DUSE and H.O. Service Manual, Page 249Get this manual
FINAL DRIVE
SEAL SLEEVE REPLACEMENT
Front Drive Axle Seal Sleeve 1If front axle sleeves become damaged and leak fluid they are replaceableUsing hammer and drift punch, remove the seal sleeve by driving it off evenly being careful not to nick or damage the sleeve mounting area (A)2Coat the sleeve mounting area (A) with silicone and using extreme care, press the new seal sleeve onto area (A) until it bottomsAllow 12 hours for silicone to cureNOTE: New front drive axle CV joint assemblies and drive axle assemblies have the seal sleeve installed from the factoryHub Seal Sleeve Replacement 3The hub seal sleeve must be driven onto the strut casting until flush with the inner magnet poleUse the flat side (no step) of tool PN 28711994To check the gap between the inner and outer poles place straight edge on the outer pole so that it just intersects with the inner poleThe gap between the straight edge and inner pole should be to .001" (0-.025mm)This measurement should be checked in three different positions around the pole assembliesThe three measurements must be within .0005" (.013 mm) of each otherIf the gap is excessive, the hub may not engagePole Gap: .000 -.001 (.00-.025mm) Not Unusual To See Two Wear Rings