Originally Posted by
Mose
Actually you'll need 2 x 5mm and 1 x 6mm allen keys.
Slot a 5mm allen keys into each end and turn both counter clockwise. Chances are the NDS cap will loosen first. Slip the 6mm allen key into the end of the axle at what ever end you just removed the cap from and repeat. The other cap should now come off. Slide the freehub off and check the seal and also check if there is a copious amount of grease.
To put them back together install the DS cap FIRST. Snug it down (not too tight) and then thread on the NDS cap and use the 2 x 5mm allen keys to snug them both down tight.