In the drum-and-shoe type, there is a wheelBrakecylinder with two pistons.
鼓式制动器制动鞋使用两个安装在一个固定底板上每个车轮。
2
The wheelcylinder is a very important part of drum brake, it offers power.
制动轮缸是鼓式制动器的重要部件，为制动器提供制动力。
3
Failures which can be solved by minor adjustment on brake pump, wheel, steering hydraulic cylinder, and micro-valve, connect level, mast roller, steering axle, etc. are excluded.