Ok so my father owns a Lesco 60" Viper. He had a left wheel motor go bad and it ruined the both pumps in the process. So I got used left and right wheel motors and pumps. My problem is I cant find and fluid fill procedures for the thing. Does any body know the best way to fill the system without air locking them. The hoses are all empty as well. From what little info I have found people have had trouble getting all the air out. Anybody?