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液压传动技术广泛应用于工程机械中，而液压、液力传动元件制作精密，结构复杂，一般的维修厂家不具备专门的测试试验设备。在维修实践中，运用压缩空气对液压、液力元件进行检查、清洗、帮助拆卸总成等，均取得了较好的效果，保证了维修质量。事实证明，在工程机械非专业维修
Hydraulic transmission technology is widely used in construction machinery, hydraulic and hydraulic transmission components made of sophisticated, complex structure, the general maintenance of manufacturers do not have specialized test equipment. In the maintenance practice, the use of compressed air on the hydraulic and hydraulic components for inspection, cleaning, assembly to help disassemble, have achieved good results, to ensure the quality of maintenance. Facts have proved that non-professional construction machinery maintenance