[摘要]新疆松土器租赁厂家与新疆土石方工程中二手挖机维修常见技术误区。一些维修人员由于对二手挖机结构、原理不清楚，不认真分析故障原因，不能准确判断故障部位，凭着“大概、差不多”的思想盲目对机械大拆大卸，结果不但原故障未排除，而且由于维修技能和工艺较差，又出现新的问题。
与中二手挖机维修常见技术误区
一些维修人员由于对二手挖机结构、原理不清楚，不认真分析故障原因，不能准确判断故障部位，凭着“大概、差不多”的思想盲目对机械大拆大卸，结果不但原故障未排除，而且由于维修技能和工艺较差，又出现新的问题。
Some maintenance personnel because of second-hand excavator structure, the principle is not clear, without a careful analysis of fault reasons, cannot accurately judge the fault position, depending on "thought about, almost blind to mechanical dismounting. The results not only original fault does not exclude and due to maintenance skills and technology is poor, new problems.
1台日产小松推土机，出现柴油机动力不足、机械无法工作的故障，维修人员拆卸分解了PT喷油泵和喷油器也没有找到故障原因，更换1个喷油泵试验，故障依旧。最后检查故障是由于所用柴油内部杂质、水分过多引起，而此次拆卸却导致PT喷油泵的性能明显下降，柴油机功率不足。
A Nissan Komatsu bulldozers, diesel engine power is insufficient, the fault that the machinery can not work, maintenance personnel remove decomposition of the PT injector pump and fuel injector did not find the cause of the fault and the replacement of a fuel injection pump test, fault still. The final examination of the failure is due to the use of diesel internal impurities, water too much, and the demolition has led to a significant decline in the performance of PT fuel injection pump, diesel engine power shortage.
因此，当机械出现故障后，要通过检测设备进行检测，如无检测设备，可通过“问、看、查、试”等传统的故障判断方法和手段，结合工程机械的结构和工作原理，确定最可能发生故障的部位。在判定工程机械故障时，一般常用“排除法”和“比较法”，按照从简单到复杂、先外表后内部、先总成再部件的顺序进行，切忌“不问青红皂白，盲目大拆大卸”。
Therefore, when the mechanical failure, to detect the device, such as no testing equipment, through the "ask, look, check, test" and other traditional methods of fault diagnosis and means, combined with the structure and working principle of engineering machinery, determine the most likely place of failure. In judging the fault of mechanical engineering, commonly used "exclusion method" and "comparison method", from simple to complex, first look inside, the first assembly of parts order according to, avoid by all means "do not ask indiscriminate, blind demolition dumping".
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