液压动力转向系实际上是机械转向器加上液压助力器。因此,其故障也大多是因液压传动部分泄漏、进空气、油泵工作不良、操纵阀失效等原因引起的转向沉重、跑偏等。动力转向系常见故障诊断方法如下。 一、有动力转向的汽车如突然感到转向沉重,甚至转不动方向盘。 这种故障可按下述步骤进行检查 Hydraulic power steering system is actually a mechanical steering plus hydraulic booster. Therefore, the failure is mostly due to hydraulic transmission part of the leak, into the air, pump failure, control valve failure caused by heavy steering, deviation and so on. Power steering system common fault diagnosis as follows. First, there is a power steering car suddenly felt heavy steering, or even turn the steering wheel. The fault can be checked according to the following steps