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、散san熱re器qi是shi否fou破po裂lie漏lou水shui，除chu從cong外wai部bu直zhi接jie觀guan察cha外wai
，還hai可ke用yong打da氣qi的de方fang法fa來lai檢jian查zha漏lou水shui部bu位wei。散san熱re器qi漏lou水shui部bu位wei可ke用yong錫xi焊han修xiu補bu，如ru某mou根gen散san熱re管guan破po裂lie較jiao重zhong，可ke將jiang兩liang頭tou夾jia扁bian堵du塞sai。工gong作zuo中zhong發fa現xian有you輕qing微wei漏lou水shui，可ke用yong肥fei皂zao堵du住zhu
，待dai停ting車che後hou修xiu理li。若ruo非fei上shang述shu原yuan因yin
，應ying進jin一yi步bu檢jian查zha發fa動dong機ji殼ke體ti是shi否fou有you裂lie紋wen，阻zu水shui圈quan是shi否fou損sun壞huai，也ye要yao檢jian查zha水shui泵beng泄xie水shui孔kong是shi否fou漏lou水shui。最zui後hou檢jian查zha散san熱re器qi蓋gai的de排pai氣qi閥fa是shi否fou失shi效xiao，如ru失shi效xiao應ying更geng換huan。
　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.feituranxingshuiwenguogao。duiyubushituranchuxiandewenduguogaoxianxiang
，yingtigaofadongjizhuansuguanchajiashuikoushifoufanshui，tongshizhuyishidalianghaishishaoliangfanshui。rudaliangfanshui
，qiesanreqiwendubujun
，zeshuomingyouxielengqueguanbeidu，zaiyanhandedongjigengyingzhuyi。dangjiashuikoushaoliangfanshuiqiefadongjiwenduqiandihougaoshi，zebiaomingfenshuiguanyisunhuaihuodusai

，yingjishigenghuan。ruofeishangshuyuanyin，kenengshilengquexishuigouguoduo
，shuidaobuchang。rujiashuikouchubufanshui，zeyingduilengquexiwaibiaojifadongjijixiebufenjinxingrenzhenjianzhafenxi。
　shouxianyingjianzhabaiyechuangshifouguanbihuokaidubuzufengshanzhuandongshifouzhengchang
，ruoyiqiezhengchang，erfadongjirengguore
，zeyingjianzhafengshanfengliang。rufengliangbuzu，yingtiaozhengfengshanyepiandejiaodu
，bingjiangyepiantoushidangzhewanhuobianhuanfengshanyepian。
　在(zai)冷(leng)卻(que)係(xi)正(zheng)常(chang)情(qing)況(kuang)下(xia)
，發(fa)動(dong)機(ji)仍(reng)過(guo)熱(re)
，則(ze)應(ying)考(kao)慮(lv)使(shi)用(yong)方(fang)麵(mian)的(de)原(yuan)因(yin)。總(zong)之(zhi)
，發(fa)動(dong)機(ji)過(guo)熱(re)的(de)原(yuan)因(yin)是(shi)多(duo)方(fang)麵(mian)的(de)，可(ke)根(gen)據(ju)具(ju)體(ti)情(qing)況(kuang)靈(ling)活(huo)運(yun)用(yong)上(shang)述(shu)方(fang)法(fa)進(jin)行(xing)檢(jian)查(zha)排(pai)除(chu)。