Based on the example of the large and medium-sized crane handling machine, the paper introduces common fault diagnosis and eliminating methods of the hydraulic booster type power steering system.

本文以大中型起重机搬运机械为例，介绍了液压助力式动力转向系统常见的故障诊断与排除方法。

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According to the structure of hydraulic steering boosters and the work principle of steering system, design of the test circuit and test principle for a steering booster are introduced in the article.

根据液压转向助力器的结构和转向系统的工作原理，介绍了一种转向助力器检测回路的设计和测试原理。

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