I changed the friction discs and axle bearings it was pretty straight up and after reassembly I have no pedal. I did lose about 5 quarts of oil while changing and topped the differential. I tried bleeding it through the bleeders and don't seem to have any air but I'm not even sure where the fluid flows from as I'm not familiar with wet brakes. one side while drive wheels are lifted applies the brakes a little as in gear it stops spinning but with minor throttle increase it goes. only thing else I noticed was the operator that brought the lift to me left the parking brake set and it was set the entire time I changed everything. but I don't see how that would effect it? any help would be greatly appreciated. The reason for the job was making a chattering noise when applied under heavy load.