I have a Ford 1700 that has a front-end loader. After about 10 minutes of running the movement starts to be jumpy and choppy. I am getting good flow from the pump. I feel there is a lot of air in the system and have read that air most likely gets in the system from the pump shaft seal. I am looking for the part number for the pump rebuild kit, shaft seal, and the best way to bleed the air out of the cylinders because there are no bleader valves.