?檢修過程中對部分故障設備采用相應的測試手段 對于比較嚴重的故障，例如在維修過程中對液壓泵、馬達、閥、控制芯片等部件進行相應的測試是必不可少的在更換新零件時，要注意盡量使其在最佳工作狀態(tài)下運行，這樣才能確保各部件及時得到更換。
如果只是簡單的更換磨損件就會使液壓系統(tǒng)處于超負荷工作狀態(tài)（如超載),就會使液壓系統(tǒng)的工作壓力不穩(wěn)定而導致異常動作，同時還會造成液壓油進入油箱和液壓管路中造成嚴重損失這樣不僅不利于液壓系統(tǒng)的維護，而且會導致重大事故的發(fā)生。
為了確保液壓系統(tǒng)正常的工作性能是一種動態(tài)的過程，就需要在各種惡劣的條件下進行維護并且做到精確控制對于液壓系統(tǒng)磨損較大時就需要考慮通過一些檢查方法來檢查分析設備缺陷存在的原因，確定故障部位和故障原因，然后進行針對性地維修。
我們應根據(jù)挖掘機的具體情況采取相應的措施：根據(jù)發(fā)動機工作狀態(tài)來判斷故障是從哪個環(huán)節(jié)進行；結合機器工作中存在的問題采取相應的措施去解決問題；通過測試來了解故障情況并能得到正確判斷，從而為最終故障的判斷提供可靠標準。
我們要做好這一工作，把復雜的情況簡單化，從而避免對機器和維修人員造成損失同時也給用戶帶來不必要的麻煩所以我們要在日常的維修過程中注意以下幾點：對一些簡單的故障應該通過常規(guī)技術檢測手段進行檢查與排除：第一：如果是由機械零件造成的損壞應首先考慮到內(nèi)部零件是否有缺陷；第二，是由于長期不正確的工作導致零部件發(fā)生損壞；第三則是由于外部原因?qū)е抡麢C工作突然不正常而導致機器癱瘓；四是由于長期不更換液壓油導致內(nèi)部潤滑不良；長期接觸酸性物質(zhì)引起液壓油管破裂等；等等這些原因都有可能會導致液壓設備出現(xiàn)故障，這就需要我們對設備本身進行檢測以確定是否存在質(zhì)量缺陷和異常狀況，如果有的話則需要對這些部件進行維修并進行相應的測試與檢測才能得出結論。
這樣做將極大降低了故障發(fā)生后在現(xiàn)場進行維修時所需要的時間和成本，并且也能夠保證一定程度上不會對液壓系統(tǒng)造成任何損傷或影響性能以及避免因為一些小故障而影響設備的正常使用，同時也能大大降低因挖掘機維修帶來的成本。
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