5．更換(huan)新的(de)(de)(de)(de)啟(qi)動(dong)馬(ma)達(da)(da)后(hou)，機器啟(qi)動(dong)正常。1．電(dian)磁開(kai)關類部(bu)件在(zai)長時(shi)(shi)間(jian)使(shi)用(yong)(yong)(yong)(yong)過程(cheng)中(zhong)，會因觸點(dian)接觸不良，接觸電(dian)阻過大(da)或(huo)觸點(dian)的(de)(de)(de)(de)閉合與分斷(duan)(duan)過程(cheng)中(zhong)的(de)(de)(de)(de)火花放電(dian)效(xiao)應導致觸點(dian)燒結粘接。平時(shi)(shi)應注意此(ci)類部(bu)件的(de)(de)(de)(de)使(shi)用(yong)(yong)(yong)(yong)壽命；有(you)維修(xiu)經驗的(de)(de)(de)(de)人員(yuan)應注意定(ding)期用(yong)(yong)(yong)(yong)砂皮紙或(huo)細銼刀(dao)打磨(mo)內(nei)部(bu)觸點(dian)，以(yi)加(jia)強對啟(qi)動(dong)馬(ma)達(da)(da)的(de)(de)(de)(de)維護保養。2．應教育挖掘機駕駛員(yuan)：若出(chu)現(xian)啟(qi)動(dong)馬(ma)達(da)(da)啟(qi)動(dong)后(hou)馬(ma)達(da)(da)仍運轉的(de)(de)(de)(de)故障，馬(ma)達(da)(da)高速運轉的(de)(de)(de)(de)聲(sheng)音一般能(neng)被覺察(cha)到，此(ci)時(shi)(shi)應立即斷(duan)(duan)開(kai)啟(qi)動(dong)馬(ma)達(da)(da)電(dian)源(yuan)，避免燒壞啟(qi)動(dong)馬(ma)達(da)(da)。故障現(xian)象：發動(dong)機啟(qi)動(dong)馬(ma)達(da)(da)不能(neng)啟(qi)動(dong)，并(bing)伴有(you)嗒塔的(de)(de)(de)(de)響聲(sheng)。用(yong)(yong)(yong)(yong)戶要求：盡(jin)快(kuai)找到故障原(yuan)因并(bing)解(jie)決故障。1．在(zai)啟(qi)動(dong)馬(ma)達(da)(da)時(shi)(shi)，用(yong)(yong)(yong)(yong)萬用(yong)(yong)(yong)(yong)表測(ce)電(dian)瓶兩(liang)(liang)端(duan)電(dian)壓只有(you)14V，不啟(qi)動(dong)馬(ma)達(da)(da)時(shi)(shi)，電(dian)瓶兩(liang)(liang)端(duan)電(dian)壓為(wei)24V。2．看來此(ci)問題是在(zai)啟(qi)動(dong)馬(ma)達(da)(da)時(shi)(shi)。

由于電(dian)(dian)(dian)瓶兩端電(dian)(dian)(dian)壓波(bo)動太大(da)引起(qi)，啟動馬達時(shi)磁力(li)開關(guan)時(shi)吸時(shi)斷，發(fa)出嗒(da)塔的聲響(xiang)。3．建議用(yong)(yong)戶將電(dian)(dian)(dian)瓶拆(chai)下車，充電(dian)(dian)(dian)12小(xiao)時(shi)再次裝車，問(wen)(wen)題解(jie)決(jue)(jue)。1．用(yong)(yong)戶反映此車長時(shi)間(jian)(jian)沒有工(gong)作。2．此故(gu)障(zhang)(zhang)為機(ji)器長時(shi)間(jian)(jian)不工(gong)作，電(dian)(dian)(dian)瓶自行放電(dian)(dian)(dian)引起(qi)電(dian)(dian)(dian)瓶電(dian)(dian)(dian)量嚴重不足所至。3．告訴用(yong)(yong)戶機(ji)器長時(shi)間(jian)(jian)不工(gong)作時(shi)，最好將負(fu)極(ji)接地(di)線拆(chai)下。故(gu)障(zhang)(zhang)現(xian)象：空調冷(leng)風量過(guo)小(xiao)，駕駛室內溫度高。用(yong)(yong)戶要(yao)求(qiu)：盡(jin)快找到(dao)故(gu)障(zhang)(zhang)原因并解(jie)決(jue)(jue)故(gu)障(zhang)(zhang)。1．檢(jian)(jian)查(cha)(cha)壓縮(suo)機(ji)工(gong)作狀況，一切正(zheng)常。2．檢(jian)(jian)查(cha)(cha)風機(ji)馬達及其電(dian)(dian)(dian)路(lu)，發(fa)現(xian)調速電(dian)(dian)(dian)阻、控(kong)制器等均正(zheng)常。3．后(hou)(hou)來，檢(jian)(jian)查(cha)(cha)空調內部過(guo)濾網(wang)，發(fa)現(xian)過(guo)濾網(wang)已(yi)被嚴重堵(du)塞。清洗過(guo)濾網(wang)后(hou)(hou)，故(gu)障(zhang)(zhang)情況大(da)為改(gai)善。更換新的過(guo)濾網(wang)后(hou)(hou)，故(gu)障(zhang)(zhang)徹底解(jie)決(jue)(jue)。4．詢(xun)問(wen)(wen)駕駛員，得(de)知自從(cong)該機(ji)購買以來。

從(cong)來(lai)沒有清(qing)潔過空調(diao)過濾(lv)網，也不知(zhi)道這個過濾(lv)網的(de)安裝位置。1．解決故(gu)(gu)(gu)障(zhang)(zhang)(zhang)，要(yao)堅持“先易后難(nan)(nan)”的(de)原則(ze)。2．發運或(huo)定期維護保養(yang)機(ji)(ji)器時，不要(yao)忘了告訴用(yong)(yong)(yong)(yong)戶(hu)(hu)空調(diao)系統需要(yao)的(de)維護保養(yang)之處。故(gu)(gu)(gu)障(zhang)(zhang)(zhang)現(xian)(xian)象：冷(leng)車時發動機(ji)(ji)啟動正常(chang)，熱車則(ze)啟動非(fei)常(chang)困(kun)難(nan)(nan)。用(yong)(yong)(yong)(yong)戶(hu)(hu)要(yao)求：要(yao)求更換發動機(ji)(ji)。1．這是典型的(de)高壓泵早期磨損(sun)導(dao)致(zhi)的(de)故(gu)(gu)(gu)障(zhang)(zhang)(zhang)，一般是由使用(yong)(yong)(yong)(yong)的(de)燃油(you)(you)(you)過臟引起的(de)。2．拆下(xia)柴(chai)油(you)(you)(you)濾(lv)芯（單濾(lv)芯），把濾(lv)芯內的(de)柴(chai)油(you)(you)(you)倒在碗里。發現(xian)(xian)柴(chai)油(you)(you)(you)上面(mian)黑色的(de)懸浮(fu)物(wu)很多且(qie)柴(chai)油(you)(you)(you)下(xia)面(mian)有大(da)約1/3體積(ji)的(de)水(shui)。3．這是典型的(de)用(yong)(yong)(yong)(yong)戶(hu)(hu)用(yong)(yong)(yong)(yong)油(you)(you)(you)不當造(zao)成的(de)機(ji)(ji)器故(gu)(gu)(gu)障(zhang)(zhang)(zhang)，由用(yong)(yong)(yong)(yong)戶(hu)(hu)負全部責任。用(yong)(yong)(yong)(yong)戶(hu)(hu)對此表示理解。4．臨(lin)時用(yong)(yong)(yong)(yong)冷(leng)水(shui)澆高壓泵降溫，發動機(ji)(ji)則(ze)馬上可以啟動。告訴用(yong)(yong)(yong)(yong)戶(hu)(hu)必須馬上去校(xiao)驗高壓泵。1．對于用(yong)(yong)(yong)(yong)戶(hu)(hu)用(yong)(yong)(yong)(yong)油(you)(you)(you)不當造(zao)成的(de)機(ji)(ji)器故(gu)(gu)(gu)障(zhang)(zhang)(zhang)。

應(ying)(ying)理直氣壯地告(gao)知公司制定(ding)的(de)機(ji)(ji)器(qi)(qi)保修條(tiao)例。2．發(fa)(fa)(fa)運或定(ding)期維護保養(yang)機(ji)(ji)器(qi)(qi)時(shi)，要反復告(gao)訴(su)用(yong)(yong)戶(hu)正(zheng)確用(yong)(yong)油(you)(you)(you)的(de)重要性(xing)。對于柴(chai)油(you)(you)(you)系統只有單濾(lv)芯(xin)的(de)機(ji)(ji)器(qi)(qi)，應(ying)(ying)縮短濾(lv)芯(xin)的(de)保養(yang)更(geng)換周(zhou)期或加裝(zhuang)一個柴(chai)油(you)(you)(you)粗(cu)濾(lv)芯(xin)。故障(zhang)(zhang)現象：發(fa)(fa)(fa)動(dong)(dong)(dong)機(ji)(ji)工作中自(zi)動(dong)(dong)(dong)熄(xi)火。用(yong)(yong)戶(hu)意見：立刻解決故障(zhang)(zhang)，否則更(geng)換發(fa)(fa)(fa)動(dong)(dong)(dong)機(ji)(ji)總成。1.根(gen)據用(yong)(yong)戶(hu)講述，得知發(fa)(fa)(fa)動(dong)(dong)(dong)機(ji)(ji)在(zai)(zai)運轉當中沒(mei)有出(chu)現任何異常(chang)(chang)聲響。2.從(cong)此類故障(zhang)(zhang)的(de)一般處(chu)理經驗來看(kan)，該發(fa)(fa)(fa)動(dong)(dong)(dong)機(ji)(ji)工作中自(zi)動(dong)(dong)(dong)熄(xi)火的(de)最大(da)原因可(ke)(ke)能是燃(ran)(ran)油(you)(you)(you)油(you)(you)(you)路故障(zhang)(zhang)引起的(de)。但也(ye)(ye)可(ke)(ke)能由燃(ran)(ran)油(you)(you)(you)切(qie)斷(duan)(duan)(duan)電(dian)磁(ci)閥等其(qi)他原因造成。3.站在(zai)(zai)機(ji)(ji)器(qi)(qi)上觀察燃(ran)(ran)油(you)(you)(you)切(qie)斷(duan)(duan)(duan)電(dian)磁(ci)閥。啟動(dong)(dong)(dong)時(shi)，可(ke)(ke)以正(zheng)常(chang)(chang)吸合也(ye)(ye)能保持(chi)住。但工作約(yue)不到半個小時(shi)，燃(ran)(ran)油(you)(you)(you)切(qie)斷(duan)(duan)(duan)電(dian)磁(ci)閥就(jiu)保持(chi)不住了（燃(ran)(ran)油(you)(you)(you)切(qie)斷(duan)(duan)(duan)電(dian)磁(ci)閥內部保持(chi)線圈發(fa)(fa)(fa)熱后(hou)電(dian)阻值變化(hua)導致吸合力(li)下降(jiang)）。