制動性能的好壞關系著運行的安全性和效率，經過拆修的制動系統應檢查制動性能是否處于良好狀態。制動液中混入氣體會影響制動性能，在更換零件下、清洗系統后要進行排氣。

1、清除液壓管路、貯油室等處的積垢，加滿制動液。
Clear hydraulic lines, oil storage chamber fouling, etc., plus full brake fluid.
2、啟動發動機，待空氣壓力表讀數為0.68~0.7MPa后停車、放氣嘴上套入放氣用的透明管，管的另一端放入盛油盤中。
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、連續踏下緊急制動踏板，松開制動踏板。放氣時，還要向貯油室及時補充制動液，以免空氣再度進入系統。
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、制動器的清潔能更好地發揮其制動效能，早期發現故障。經常檢查腳制動系統有無泄漏，各種接頭、連接部分有無松動，總液壓泵液面是否正常，管路是否暢通，無泄漏，檢查橡膠零件是否老化變質。
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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