1、轉向泵內漏過大或軸油封漏油，造成供油量不足；
Lose a large steering pump or shaft seal leakage, resulting in insufficient fuel supply;
2、單向穩定分流閥被雜質卡住或彈簧失效，造成供油量不足；
Stable way diverter valve is stuck impurities or spring failure, resulting in insufficient fuel supply;
3、轉向器的轉子、定子副由于徑向或軸向磨損，造成間隙過大內漏增加，表現慢轉沉而快轉輕；
Steering rotor, stator, vice due to radial or axial wear, resulting in increased internal leakage gap is too large, the performance of slow and fast turn light switch Shen;
4、轉向器閥塊的安全閥由于液壓沖擊和機械振動，造成調壓螺桿松脫，使系統壓力偏低，使轉向沉重，甚至不能轉向；安全閥調壓彈簧變形、失效或閥芯被污物顆粒卡住，造成安全閥處于卸荷狀態；閥塊的過載閥失效，同樣會造成轉向沉重，表現為方向盤轉動，轉向缸動作滯怠或不動。
Safety valve diverter valve blocks and hydraulic shock due to mechanical vibration,resulting in the regulator screw loose, the system pressure is low, the steering heavy, not even turning; regulator valve spring deformation, failure or spool is dirt particles stuck, causing the safety valve in the unloading state; overload valve block failure, it will also cause heavy steering, the performance of the steering wheel, steering cylinder motion lag lazy or does not move.
5、轉向器進、回油口的鋼球單向閥失效會造成轉向沉重，表現快轉和慢轉均沉重，轉向缸動作慢。
Steering into the oil return port of the ball check valve failure will cause the steering heavy, fast-forward and slow transfer performance are heavy, slow steering cylinder movement.
6、轉向缸活塞密封的失效或局部失效，造成轉向沉重。
Steering cylinder piston seal failure or partial failure, resulting in heavy steering.
7、轉向系統中有氣。
Steering system with gas.

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