制动性能的好坏关系着运行的安全性和效率，经过拆修的制动系统应检查制动性能是否处于良好状态。制动液中混入气体会影响制动性能，在更换零件下、清洗系统后要进行排气。

1、清除液压管路、贮油室等处的积垢，加满制动液。
Clear hydraulic lines, oil storage chamber fouling, etc., plus full brake fluid.
2、启动发动机，待空气压力表读数为0.68~0.7MPa后停车、放气嘴上套入放气用的透明管，管的另一端放入盛油盘中。
Start the engine, until the air pressure gauge reading is 0.68 ~ 0.7MPa after parking, deflated deflated by mouth set into a transparent tube containing the other end of the tube into the oil pan.
3、连续踏下紧急制动踏板，松开制动踏板。放气时，还要向贮油室及时补充制动液，以免空气再度进入系统。
Depress the brake pedal continuous emergency, release the brake pedal. When deflated, but also to replenish the oil reservoir chamber brake fluid, in order to avoid re-entering the air system.
4、制动器的清洁能更好地发挥其制动效能，早期发现故障。经常检查脚制动系统有无泄漏，各种接头、连接部分有无松动，总液压泵液面是否正常，管路是否畅通，无泄漏，检查橡胶零件是否老化变质。
Clean the brake can better play its braking efficiency, early detection of faults. Always check the foot brake system for leaks, various joints, loose connection portion, the total pump level is normal, the pipeline is smooth, no leaks, check whether the aging deterioration of rubber parts.

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