When all brakes drag, it may be that the brake pedal does not have sufficient play, so that the piston in the master cylinder does not fully retract.
如果所有的制动器都咬死，可能是由于踏板未能充分地起作用，致使制动总泵中的活塞不能完全退回。
2
The cylinder drives a piston extraction and play materials, and by the one-way valve to control the flow of materials, the magnetic switch control cylinder stroke, which adjust the filling volume.
通过气缸带动一个活塞抽取和打出物料，并由单向阀控制物料流向，由磁环开关控制气缸行程，即调节灌装量。
3
However, in research of water hydraulic axial piston pump, inertia items should play an important role because the viscosity of water is much less than that of oil.