起重機發動機溫度過高的原因及排除方法

  導致起重機發動機溫度過高的原因一般有一下幾條：
　1. 冷卻係統漏水或冷卻水不足;
  2.水溫表指示不準或失靈;
  3.冷卻係統水垢太多，散熱效果差;
  4.散熱器護罩網或散熱器芯通風道被雜物堵塞
，致使散熱不良;
  5.水泵、風扇皮帶過鬆或折斷;
  6.水泵損壞，風扇葉片裝反或變形
，風圈損壞;
  7.節溫器損壞在主閥關閉位置;
  8.發動機長期超負荷運轉及供油時間過遲等。
　排除方法：
　當發動機在工作中出現水溫過高故障時，應注意觀察故障現象，找出原因予以排除。首先要檢查水溫表是否失靈，若不準或失靈應更換;然後檢查水箱是否缺水，進水管、sanreqishifoupolieloushui
，chucongwaibuzhijieguanchawai，haikeyongdaqidefangfalaijianzhaloushuibuwei。sanreqiloushuibuweikeyongxihanxiubu，rumougensanreguanpoliejiaozhong，kejiangliangtoujiabiandusai。gongzuozhongfaxianyouqingweiloushui，keyongfeizaoduzhu，daitingchehouxiuli。ruofeishangshuyuanyin
，yingjinyibujianzhafadongjiketishifouyouliewen
，zushuiquanshifousunhuai，yeyaojianzhashuibengxieshuikongshifouloushui。zuihoujianzhasanreqigaidepaiqifashifoushixiao
，rushixiaoyinggenghuan。
　若非冷卻水泄漏問題，則應分兩種情況對故障進行分析排除。1.turanxingshuiwenguogao。shouxianjianzhasanreqishifouguore，ruguosanreqiwenduguogao
，shuomingqigangdianchonghuai，cishizhuyijianzhajitishangpingmianyuganggaijiehemianshifouyanzhongqiaoqubianxing，ruobianxingyingjishixiuli。rusanreqiwendubugao，zeshuominglengqueshuixunhuanbuliang，yingjianzhafengshanpidaishifouzheduanhuoyanzhongdahua。ruozhengchang，zaijianzhasanreqichushuiguanshifoubeixibie，neikongyouwutuocengdusai，zhamingyuanyinyuyipaichu
，yingjidebanfashizaixibiedeguanneifangshidangdadedanhuangzhicheng。zaijianzhajiewenqidepengzhangtongshifoupolie，polieyinggenghuan。rujiewenqizhengchang，zeshuomingshuibengsunhuai

，yingrenzhenjianzhaxiulishuibeng。2.非(fei)突(tu)然(ran)性(xing)水(shui)溫(wen)過(guo)高(gao)。對(dui)於(yu)不(bu)是(shi)突(tu)然(ran)出(chu)現(xian)的(de)溫(wen)度(du)過(guo)高(gao)現(xian)象(xiang)
，應(ying)提(ti)高(gao)發(fa)動(dong)機(ji)轉(zhuan)速(su)觀(guan)察(cha)加(jia)水(shui)口(kou)是(shi)否(fou)翻(fan)水(shui)，同(tong)時(shi)注(zhu)意(yi)是(shi)大(da)量(liang)還(hai)是(shi)少(shao)量(liang)翻(fan)水(shui)。如(ru)大(da)量(liang)翻(fan)水(shui)，且(qie)散(san)熱(re)器(qi)溫(wen)度(du)不(bu)均(jun)，則(ze)說(shuo)明(ming)有(you)些(xie)冷(leng)卻(que)管(guan)被(bei)堵(du)，在(zai)嚴(yan)寒(han)的(de)冬(dong)季(ji)更(geng)應(ying)注(zhu)意(yi)。當(dang)加(jia)水(shui)口(kou)少(shao)量(liang)翻(fan)水(shui)且(qie)發(fa)動(dong)機(ji)溫(wen)度(du)前(qian)低(di)後(hou)高(gao)時(shi)，則(ze)表(biao)明(ming)分(fen)水(shui)管(guan)已(yi)損(sun)壞(huai)或(huo)堵(du)塞(sai)，應(ying)及(ji)時(shi)更(geng)換(huan)。若(ruo)非(fei)上(shang)述(shu)原(yuan)因(yin)，可(ke)能(neng)是(shi)冷(leng)卻(que)係(xi)水(shui)垢(gou)過(guo)多(duo)，水(shui)道(dao)不(bu)暢(chang)。如(ru)加(jia)水(shui)口(kou)處(chu)不(bu)翻(fan)水(shui)，則(ze)應(ying)對(dui)冷(leng)卻(que)係(xi)外(wai)表(biao)及(ji)發(fa)動(dong)機(ji)機(ji)械(xie)部(bu)分(fen)進(jin)行(xing)認(ren)真(zhen)檢(jian)查(zha)分(fen)析(xi)。
　shouxianyingjianzhabaiyechuangshifouguanbihuokaidubuzufengshanzhuandongshifouzhengchang
，ruoyiqiezhengchang
，erfadongjirengguore，zeyingjianzhafengshanfengliang。rufengliangbuzu，yingtiaozhengfengshanyepiandejiaodu
，bingjiangyepiantoushidangzhewanhuobianhuanfengshanyepian。
　zailengquexizhengchangqingkuangxia
，fadongjirengguore，zeyingkaolvshiyongfangmiandeyuanyin。zongzhi，fadongjiguoredeyuanyinshiduofangmiande，kegenjujutiqingkuanglinghuoyunyongshangshufangfajinxingjianzhapaichu。