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1. the spring between the valve core and the valve sleeve in the steering gear of internal combustion forklift and electric forklift is damaged or too soft, which is difficult to overcome the resistance of the reverse drive of the forklift steering gear, so that the forklift valve sleeve cannot automatically return to the neutral position.

2.因叉车液压油脏污使滑阀运动受到阻滞。

2. the movement of the slide valve is blocked due to the dirty hydraulic oil of the forklift.

3. 由于叉车中位没有调节好而使转向桥油缸不在中间位置，或者是由于滑阀与阀体台阶位置偏移使滑阀不在中间位置。

3. the steering axle cylinder is not in the middle position because the forklift is not adjusted properly, or the slide valve is not in the middle position because the slide valve is offset from the step position of the valve body.

4.流量控制阀卡住使液压泵流量过大、油压管道布置不合理或者双向过载阀或双向补油阀有一侧泄漏， 而造成叉车油压系统节流损失过大，使液压缸左腔或右腔压力过大。

4. the flow control valve is stuck, which leads to excessive flow of the hydraulic pump, unreasonable oil pressure pipeline layout, or one side leakage of the two-way overload valve or two-way oil makeup valve, resulting in excessive throttling loss of the forklift oil pressure system and excessive pressure in the left or right chamber of the hydraulic cylinder.

其他引起此内燃叉车、电动叉车配件故障的原因则可能为转向连接机构松旷、油液中有空气、前轮不当、轮胎间的差异或者是由两前轮的刹车调整不均匀等。不论是什么，为了保证工作效率以及叉车司机，都要对内燃叉车、电动叉车方向盘发飘原因进行检查。

Other reasons for the failure of the accessories of this internal combustion forklift and electric forklift may be the loose steering connection mechanism, air in the oil, improper front wheels, differences between tires, or uneven adjustment of the brakes of the two front wheels. No matter what it is, in order to ensure the work efficiency and the safety of forklift drivers, it is necessary to check the causes of floating steering wheel of internal combustion forklift and electric forklift.

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