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神鋼-8型挖掘機(jī)維修-冷卻水不足報(bào)警
發(fā)布日期:2011-08-23 來源:本站 瀏覽量:9868

            維修技術(shù)案例分析

                                                                                       編號(hào):CKCMG-JAL-07-080

編號(hào)                                類別                  關(guān)聯(lián)內(nèi)容  

                                       電路              空調(diào)面板無顯示          

機(jī)型       微挖       B92  B93  B94  B128       B130       B132       其它

                                                                                             

故障現(xiàn)象: 整機(jī)號(hào):YC10-C5037                                     

                            工作時(shí)間:2900 小時(shí)                                    

                            工作狀況:    礦山采石                                  

                           故障現(xiàn)象:該機(jī)每天都會(huì)出現(xiàn)冷卻水不足報(bào)警,                                     

                                                       

                                                       

                                                       

                                                       

                                                       

原因分析:             

                     1.出現(xiàn)冷卻水報(bào)警后檢查副水箱發(fā)現(xiàn)副水箱冷卻水特別多,而主水箱里確實(shí)缺水了, 

                     先懷疑是水箱蓋或主副水箱之間的連接管道有問題,全部更換后故障依然存在.                                       

                                                       

             

                    2.打開水箱蓋后將發(fā)動(dòng)機(jī)處于高油門發(fā)現(xiàn)水箱里有大量氣泡冒出,所以初步判斷為 

             缸墊被沖破.                                        

                                                       

                    3.做斷缸實(shí)驗(yàn)發(fā)現(xiàn)斷5缸后觀察水箱氣泡明顯減少,判斷為5缸處缸墊被沖破                                         

                                                       

                    4.拆開缸蓋后發(fā)現(xiàn)缸墊在5缸附近的螺絲孔損壞                                       

                                                       

                                                       

                                                       

處置方法:                                                       

                                                       

              更換缸墊      

  

 

 

 

 


 

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