2005-2008 Honda ATV TRX500FA/FGA Fourtrax, Rubicon Factory Service Manual, Page 361Get this manual
FRONT DRIVING MECHANISM Be careful not to damage the oil seal in the differential gear case
Install the drive shaft by holding the inboard joint until the stopper ring seats in the groove of the differentialMake sure that the stopper ring is seated properly by pulling out the inboard joint lightly
INBOARD JOINT
Do not get grease onto the shoe linings
Install the wheel hubknuckle assembly over the drive shaft and onto the suspension armsInstall hub nut, and temporarily tighten the nutInstall and tighten each joint nut to the specified torque and further tighten until its grooves align with the cotter pin holes