即對其(qi)(qi)進行更換(huan)。但兩(liang)三天(tian)后，同(tong)樣故障(zhang)(zhang)又出(chu)現。2.通過對服務人員(yuan)拍回的(de)(de)照片，發現報警開關已(yi)嚴重變(bian)(bian)形(xing)，看其(qi)(qi)安(an)裝位置靠渦輪增(zeng)(zeng)壓器(qi)(qi)很近，判(pan)斷報警開關損(sun)壞原(yuan)因為(wei)靠近渦輪增(zeng)(zeng)壓器(qi)(qi)太近，受其(qi)(qi)高(gao)(gao)溫影響，外(wai)殼塑料變(bian)(bian)形(xing)導致損(sun)壞。3.改變(bian)(bian)報警開關安(an)裝位置，使其(qi)(qi)遠離渦輪增(zeng)(zeng)壓器(qi)(qi)后，故障(zhang)(zhang)一(yi)(yi)(yi)直未出(chu)現。1.對一(yi)(yi)(yi)個故障(zhang)(zhang)的(de)(de)出(chu)現，一(yi)(yi)(yi)定要(yao)判(pan)斷其(qi)(qi)產生的(de)(de)原(yuan)因，而不(bu)(bu)能壞什么就換(huan)什么，不(bu)(bu)加判(pan)斷，如果這樣，往往同(tong)樣故障(zhang)(zhang)會(hui)再次發生。2.同(tong)樣對報告書上申(shen)請零件(jian)也(ye)要(yao)求(qiu)代理(li)商寫(xie)出(chu)故障(zhang)(zhang)產生原(yuan)因，這樣，一(yi)(yi)(yi)方面可(ke)以提高(gao)(gao)代理(li)商處理(li)故障(zhang)(zhang)的(de)(de)能力，另(ling)一(yi)(yi)(yi)方面可(ke)及時發現我們(men)產品安(an)裝或設計(ji)上存在的(de)(de)不(bu)(bu)足之處，同(tong)樣也(ye)可(ke)以提高(gao)(gao)成(cheng)功率。故障(zhang)(zhang)現象：啟動馬(ma)達不(bu)(bu)轉(zhuan)。用戶要(yao)求(qiu)：找到故障(zhang)(zhang)原(yuan)因并解(jie)決(jue)故障(zhang)(zhang)。

1．用鼻子聞啟(qi)(qi)動(dong)(dong)(dong)馬達(da)(da)有燒(shao)損的味道(dao)。2．在斷(duan)(duan)電(dian)(dian)(dian)(dian)(dian)狀態(tai)下，用萬用表(biao)檢測(ce)啟(qi)(qi)動(dong)(dong)(dong)繼(ji)電(dian)(dian)(dian)(dian)(dian)器的一組(zu)常(chang)開觸(chu)(chu)點，測(ce)得電(dian)(dian)(dian)(dian)(dian)阻不(bu)為無窮(qiong)大(da)。3．經分(fen)析判斷(duan)(duan)可知：啟(qi)(qi)動(dong)(dong)(dong)繼(ji)電(dian)(dian)(dian)(dian)(dian)器內(nei)部(bu)觸(chu)(chu)點燒(shao)結導致啟(qi)(qi)動(dong)(dong)(dong)馬達(da)(da)電(dian)(dian)(dian)(dian)(dian)源電(dian)(dian)(dian)(dian)(dian)路不(bu)能切斷(duan)(duan)而長時間運轉(zhuan)馬達(da)(da)使(shi)馬達(da)(da)過(guo)熱(re)燒(shao)壞。4．更(geng)換新的啟(qi)(qi)動(dong)(dong)(dong)繼(ji)電(dian)(dian)(dian)(dian)(dian)器及(ji)啟(qi)(qi)動(dong)(dong)(dong)馬達(da)(da)后，機(ji)器啟(qi)(qi)動(dong)(dong)(dong)正(zheng)常(chang)。1．繼(ji)電(dian)(dian)(dian)(dian)(dian)器類部(bu)件在長時間使(shi)用過(guo)程中，會因觸(chu)(chu)點接觸(chu)(chu)不(bu)良，接觸(chu)(chu)電(dian)(dian)(dian)(dian)(dian)阻過(guo)大(da)或觸(chu)(chu)點的閉合與分(fen)斷(duan)(duan)過(guo)程中的火花(hua)放電(dian)(dian)(dian)(dian)(dian)效應(ying)導致觸(chu)(chu)點燒(shao)結粘接。平時應(ying)注意(yi)此(ci)類部(bu)件的使(shi)用壽(shou)命(ming)；有維(wei)修經驗的人員(yuan)應(ying)注意(yi)定(ding)期(qi)用砂皮紙或細銼(cuo)刀打(da)磨(mo)繼(ji)電(dian)(dian)(dian)(dian)(dian)器的內(nei)部(bu)觸(chu)(chu)點。2．應(ying)教育挖掘機(ji)駕駛(shi)員(yuan)：若出現啟(qi)(qi)動(dong)(dong)(dong)馬達(da)(da)啟(qi)(qi)動(dong)(dong)(dong)后馬達(da)(da)仍運轉(zhuan)的故障，馬達(da)(da)高速運轉(zhuan)的聲(sheng)音一般能被覺察(cha)到，此(ci)時應(ying)立即斷(duan)(duan)開啟(qi)(qi)動(dong)(dong)(dong)馬達(da)(da)電(dian)(dian)(dian)(dian)(dian)源。

避免燒壞啟(qi)動馬(ma)(ma)達(da)。故障(zhang)現象：啟(qi)動發動機時，啟(qi)動馬(ma)(ma)達(da)不轉。用(yong)戶要求(qiu)：更(geng)換啟(qi)動馬(ma)(ma)達(da)。1．用(yong)萬用(yong)表檢查電(dian)(dian)(dian)(dian)瓶(ping)(ping)(ping)(ping)兩(liang)端電(dian)(dian)(dian)(dian)壓(ya)(ya)為(wei)25V左右。2．在(zai)(zai)啟(qi)動馬(ma)(ma)達(da)時，檢查馬(ma)(ma)達(da)輸入端電(dian)(dian)(dian)(dian)壓(ya)(ya)為(wei)10V左右。3．關(guan)掉電(dian)(dian)(dian)(dian)源總(zong)開(kai)關(guan)，用(yong)手(shou)觸(chu)摸(mo)電(dian)(dian)(dian)(dian)瓶(ping)(ping)(ping)(ping)樁(zhuang)頭，發現有兩(liang)個樁(zhuang)頭溫度很高。4．拆(chai)下電(dian)(dian)(dian)(dian)瓶(ping)(ping)(ping)(ping)線(xian)(xian)纜(lan)，用(yong)砂(sha)皮紙將電(dian)(dian)(dian)(dian)瓶(ping)(ping)(ping)(ping)聯接線(xian)(xian)纜(lan)和電(dian)(dian)(dian)(dian)瓶(ping)(ping)(ping)(ping)樁(zhuang)頭打磨干(gan)凈。重新啟(qi)動機器，故障(zhang)排除。1．此故障(zhang)為(wei)電(dian)(dian)(dian)(dian)瓶(ping)(ping)(ping)(ping)樁(zhuang)頭與電(dian)(dian)(dian)(dian)瓶(ping)(ping)(ping)(ping)聯接線(xian)(xian)纜(lan)接觸(chu)電(dian)(dian)(dian)(dian)阻太大(da)(da)，在(zai)(zai)啟(qi)動馬(ma)(ma)達(da)時（啟(qi)動瞬間(jian)電(dian)(dian)(dian)(dian)流極大(da)(da)）使(shi)電(dian)(dian)(dian)(dian)瓶(ping)(ping)(ping)(ping)到(dao)馬(ma)(ma)達(da)的(de)電(dian)(dian)(dian)(dian)壓(ya)(ya)降落過大(da)(da)引起。2．教育用(yong)戶對自己(ji)的(de)機器要經常呵(he)護保養，尤(you)其是(shi)電(dian)(dian)(dian)(dian)瓶(ping)(ping)(ping)(ping)聯接部分一(yi)定要保持接觸(chu)良好。故障(zhang)現象：不能啟(qi)動發動機。用(yong)戶要求(qiu)：找到(dao)故障(zhang)原因并解決故障(zhang)。1．打開(kai)電(dian)(dian)(dian)(dian)瓶(ping)(ping)(ping)(ping)箱蓋板，發現有一(yi)把(ba)扳手(shou)躺在(zai)(zai)電(dian)(dian)(dian)(dian)瓶(ping)(ping)(ping)(ping)上。

2．檢查發(fa)現(xian)電瓶樁頭(tou)及(ji)扳(ban)手(shou)(shou)(shou)已嚴重燒蝕。3．與駕駛(shi)員交談(tan)過程中得知(zhi)：該機(ji)器(qi)剛剛由駕駛(shi)員自(zi)己做過2500小(xiao)時(shi)的定期維(wei)護保(bao)養。4．經(jing)(jing)分析判斷(duan)可(ke)(ke)知(zhi)：駕駛(shi)員將保(bao)養用的扳(ban)手(shou)(shou)(shou)用完后隨手(shou)(shou)(shou)放在電瓶上，在機(ji)器(qi)作業中扳(ban)手(shou)(shou)(shou)滑動(dong)(dong)，從而造成電瓶短路(lu)(lu)。1．在做機(ji)器(qi)保(bao)養或檢修工作時(shi)，千萬(wan)不能將扳(ban)手(shou)(shou)(shou)等其他(ta)導(dao)電物(wu)品(pin)放在電瓶上，以防短路(lu)(lu)。故障(zhang)現(xian)象：啟(qi)動(dong)(dong)馬(ma)達(da)(da)不轉(zhuan)，無法啟(qi)動(dong)(dong)機(ji)器(qi)。用戶要(yao)求：找到故障(zhang)原因并(bing)解決故障(zhang)。1．用鼻子聞啟(qi)動(dong)(dong)馬(ma)達(da)(da)有燒損的味道。2．檢查啟(qi)動(dong)(dong)電路(lu)(lu)，發(fa)現(xian)一切(qie)正常。3．從發(fa)動(dong)(dong)機(ji)上拆下啟(qi)動(dong)(dong)馬(ma)達(da)(da)并(bing)分解該馬(ma)達(da)(da)，發(fa)現(xian)啟(qi)動(dong)(dong)馬(ma)達(da)(da)電磁(ci)開(kai)關(guan)的接觸(chu)盤與觸(chu)點(dian)已燒結(jie)。4．經(jing)(jing)分析判斷(duan)可(ke)(ke)知(zhi)：電磁(ci)開(kai)關(guan)觸(chu)盤與觸(chu)點(dian)燒結(jie)導(dao)致啟(qi)動(dong)(dong)馬(ma)達(da)(da)電源電路(lu)(lu)不能切(qie)斷(duan)而長時(shi)間運轉(zhuan)馬(ma)達(da)(da)使馬(ma)達(da)(da)過熱燒壞。