For the brake total pump shell process formulation: 1. The car head →2. Drilling Center hole →3. Coarse-Hinged cylinder hole →4. Drilling installation hole →5. Milling inlet and drilling compensation hole and oil supply hole →6. Milling out oil mouth →7. →8. Honing cylinder Hole (finishing) of the machining process, the following three points of processing for the selection of the base surface is correct and reasonable to make the shell deformation more accurate and extremely important, focus on the car head , coarse hinge cylinder hole, honing cylinder hole analysis.