Doing a complete overhaul of a Bobcat 743. Installing new axle bearings and grease seal tomorrow. Question is whether I need to grease the axle bearings. They are sealed on outside of axle tube. Inside of axle tube is open to the chain case, where I will have 10 gallons of fresh hydraulic fluid to keep chains lubricated. It would seem that same hydro fluid is going to slosh down all the axle tubes and should lube the bearings?