I replaced the brake disks and booster cylinder. With out the machine running the pedal goes all the way to the floor but I can get fluid at the bleeders on the axle. With the machine running the pedal will pump up but I have no brakes. With the machine running I can't gett fluid to the bleeders on the axles. I talked to cat tech service and was told to replace the booster cylinder so I did. I still have the same problem. I am getting 400 lbs of pilot pressure to booster. I called cat back and they sent me the bleeding procedure. The master cylinder resivoir I have is sealed and has 3 lines on it. What they sent me is for a reservoir with a cap and one line on it. They call for drilling a hole in the cap and filling with 10/30 motor oil. then a set up a conglomeration of stuff. But I have sealed reservoir that fills with hydraulic oil when I hit a function? Anybody got any other info? Thanks