The lip seals are designed to keep water and other contaminants out and grease in to an extent. The seal only goes on one way. If you look closely at the seal you will see that pressure created on the inside face of the rubber seal will allow the lip to lift. If pressure is applied from the outside the seal gets tighter on the axle. If you apply to much grease to fast into the housing you can "pop" the seal out. It is a good idea to slowing apply the grease to the housing until you see the grease come out the seals. This creates to film of grease between the rubber seal and the axle which will help the seal last longer and prevent the seal from grooving the axle.

 

when you install the bearings,be sure to pack them with grease and then pack the carrie also before you assemble it,it will help out..

 

i pack it fine i no that its something else definetly...the inside of teh housing isnt to pretty. i think where the bearing races aer is worn letting them spin and ripping apart the bearings, the first time the bearings where torn apart into shreds littarly!!! idk this time there is some play im gonna do it this weekend.