1、忌機油隻加不換
機油在柴油機的使用中是必不可少的,主要起潤滑、冷卻、qingjiedengzuoyong。yinci,henduojiashiyuandouhuizhuyijianzharunhuayoudeyouliang,binganbiaozhuntianjia,danshiquehushilerunhuayouzhiliangdejianzhaheduiyijingbianzhijiyoudegenghuan,daozhiyixiefadongjideyundongjijianzongshizaijiaochaderunhuahuanjingzhongyunzhuan,congerjiasugejijiandemosun。zaizhengchangqingkuangxiajiyoudesunhaobingbuda,danshiquehenrongyiwuran,congershiqubaohuchaiyoujidezuoyong。zaichaiyoujiyunzhuanguochengzhong,xuduowuwu(燃油不完全燃燒生成的碳煙、積炭和積垢等)都會進入到機油中。對於新的或大修後的機械,試運轉之後雜質會更多,如果隻加不換就急於投入使用,很容易引起燒瓦、抱bao軸zhou等deng意yi外wai事shi故gu。另ling外wai,即ji使shi更geng換huan機ji油you,某mou些xie駕jia駛shi員yuan由you於yu缺que乏fa維wei修xiu經jing驗yan或huo者zhe圖tu省sheng事shi,也ye會hui在zai更geng換huan時shi不bu徹che底di清qing洗xi油you道dao,使shi機ji械xie雜za質zhi仍reng然ran殘can留liu在zai油you底di殼ke及ji油you路lu中zhong。
2、忌黃油亂用亂塗
(1)汽(qi)缸(gang)墊(dian)上(shang)塗(tu)黃(huang)油(you)。黃(huang)油(you)是(shi)工(gong)程(cheng)機(ji)械(xie)修(xiu)理(li)中(zhong)常(chang)用(yong)的(de)潤(run)滑(hua)脂(zhi),可(ke)起(qi)到(dao)潤(run)滑(hua)和(he)密(mi)封(feng)的(de)作(zuo)用(yong)。因(yin)此(ci),有(you)些(xie)修(xiu)理(li)工(gong)在(zai)安(an)裝(zhuang)汽(qi)缸(gang)墊(dian)時(shi),就(jiu)會(hui)在(zai)汽(qi)缸(gang)墊(dian)上(shang)塗(tu)上(shang)一(yi)層(ceng)黃(huang)油(you),認(ren)為(wei)這(zhe)樣(yang)可(ke)以(yi)增(zeng)加(jia)柴(chai)油(you)機(ji)的(de)密(mi)封(feng)性(xing)。殊(shu)不(bu)知(zhi),這(zhe)樣(yang)做(zuo)反(fan)而(er)影(ying)響(xiang)了(le)柴(chai)油(you)機(ji)的(de)工(gong)作(zuo)性(xing)能(neng)。汽(qi)缸(gang)墊(dian)是(shi)柴(chai)油(you)機(ji)缸(gang)體(ti)與(yu)缸(gang)蓋(gai)之(zhi)間(jian)*重(zhong)要(yao)的(de)密(mi)封(feng)件(jian),它(ta)不(bu)但(dan)能(neng)密(mi)封(feng)汽(qi)缸(gang)內(nei)所(suo)產(chan)生(sheng)的(de)高(gao)溫(wen)高(gao)壓(ya)氣(qi)體(ti),而(er)且(qie)還(hai)能(neng)密(mi)封(feng)汽(qi)缸(gang)蓋(gai)和(he)缸(gang)體(ti)內(nei)的(de)的(de)冷(leng)卻(que)水(shui)和(he)潤(run)滑(hua)油(you),所(suo)以(yi)在(zai)拆(chai)裝(zhuang)汽(qi)缸(gang)墊(dian)時(shi),都(dou)要(yao)特(te)別(bie)注(zhu)意(yi)它(ta)的(de)密(mi)封(feng)質(zhi)量(liang)。如(ru)果(guo)安(an)裝(zhuang)時(shi)在(zai)汽(qi)缸(gang)墊(dian)上(shang)塗(tu)黃(huang)油(you),當(dang)汽(qi)缸(gang)蓋(gai)螺(luo)栓(shuan)擰(ning)緊(jin)時(shi),一(yi)部(bu)分(fen)黃(huang)油(you)就(jiu)會(hui)被(bei)擠(ji)壓(ya)到(dao)汽(qi)缸(gang)水(shui)道(dao)和(he)油(you)道(dao)中(zhong),留(liu)在(zai)缸(gang)墊(dian)間(jian)的(de)黃(huang)油(you)在(zai)汽(qi)缸(gang)工(gong)作(zuo)時(shi),由(you)於(yu)受(shou)高(gao)溫(wen)影(ying)響(xiang),一(yi)部(bu)分(fen)會(hui)流(liu)人(ren)汽(qi)缸(gang)燃(ran)燒(shao),另(ling)一(yi)部(bu)分(fen)則(ze)殘(can)留(liu)在(zai)缸(gang)體(ti)與(yu)缸(gang)蓋(gai)的(de)結(jie)合(he)麵(mian)上(shang),使(shi)缸(gang)墊(dian)、缸(gang)蓋(gai)與(yu)機(ji)體(ti)平(ping)麵(mian)之(zhi)間(jian)產(chan)生(sheng)縫(feng)隙(xi),高(gao)溫(wen)高(gao)壓(ya)燃(ran)氣(qi)很(hen)容(rong)易(yi)從(cong)此(ci)處(chu)衝(chong)擊(ji)汽(qi)缸(gang)墊(dian),毀(hui)壞(huai)缸(gang)墊(dian),造(zao)成(cheng)漏(lou)氣(qi)。此(ci)外(wai),黃(huang)油(you)長(chang)時(shi)間(jian)處(chu)在(zai)高(gao)溫(wen)狀(zhuang)態(tai)下(xia)還(hai)會(hui)產(chan)生(sheng)積(ji)炭(tan),造(zao)成(cheng)缸(gang)墊(dian)過(guo)早(zao)老(lao)化(hua)變(bian)質(zhi)。因(yin)此(ci)安(an)裝(zhuang)汽(qi)缸(gang)墊(dian)時(shi)切(qie)勿(wu)塗(tu)抹(mo)黃(huang)油(you)。
(2)luntailuomutuhuangyou。weilerongyiningjinluomuhefangzhixiushi,bushaoxiuligongzailuntaideluoshuanluomushangtuyou。shijishangzheshiyizhongcuowuzuofa。yinweiluntailuomuningjinhou,luowenjianjiujuyouzisuodetezheng。zheshiyouyuluowenluoxuanjiaoxiaoyuluowenjiandedangliangmocajiaodeyuangu。geidingdeluoshuanlianjiezhong,luoxuanshengjiaoshiyidingzhi,erdangliangmocajiaozesuiluowenjiandemocazhuangtaierbian。xianran,tuyouhouluowenjiandedangliangmocajiaojianxiao,luoshuanlianjiedezisuoxingnengbiancha。yincizailuntaideluoshuanheluomushangjueduibuyaoturunhuazhihuodishangrunhuayou。zheyangzuo,fanerhuishiluomusongdong,shenzhiniangchengshigu。
3、忌缸套和活塞新品不經選配即安裝
zaihuanzhuangqigangtaohehuosaishi,renweixindeqigangtaohehuosaidoushibiaozhunjian,doujuyouhuhuanxing,zhuangshangqujiukeyishiyongle。shijishang,qigangtaoyuhuosaidechicundouyouyidingdegongchafanwei。
如把*大尺寸的汽缸套配上*xiaochicundehuosai,huishipeihejianxiguoda,zaochengyasuowuli,qidongkunnan。yinci,huanzhuangshibixuyaojianzhabiaozhungangtaoyuhuosaidechicunfenzudaihao,zhuangyongdegangtaohehuosaibixushibiaozhunhuosaidechicunfenzudaihaoyubiaozhungangtaodechicunfenzudaihaoxiangtong,zhiyouzheyangcainengbaozhengliangzhezhijianjuyoubiaozhundepeihejianxi。lingwai,gegangzhuangyongtongyifenzudaihaodegangtaohehuosaidetongshi,haiyaozhuyizhuangqianjianyangangsaijianxi,weilebaozhengzhuangpeibiaozhun,zaizhuangjiqianhaiyingjinxingyicijiance,yifangzhuangshangjiamaoweiliedecancichanpin。
4、忌不檢查柱塞行程餘量
在zai柱zhu塞sai式shi噴pen油you泵beng的de諷feng試shi中zhong,很hen多duo維wei修xiu人ren員yuan不bu注zhu意yi檢jian查zha柱zhu塞sai的de行xing程cheng餘yu量liang。所suo謂wei柱zhu塞sai的de行xing程cheng餘yu量liang,是shi指zhi柱zhu塞sai被bei凸tu輪lun軸zhou上shang的de凸tu輪lun頂ding至zhi上shang止zhi點dian後hou,還hai能neng繼ji續xu上shang行xing的de移yi動dong量liang。調tiao好hao供gong油you開kai始shi時shi間jian後hou,之zhi所suo以yi還hai要yao檢jian查zha行xing程cheng餘yu量liang,是shi因yin為wei柱zhu塞sai的de行xing程cheng餘yu量liang與yu柱zhu塞sai、套(tao)筒(tong)的(de)磨(mo)損(sun)有(you)關(guan)。柱(zhu)塞(sai)與(yu)套(tao)筒(tong)磨(mo)損(sun)後(hou),柱(zhu)塞(sai)要(yao)往(wang)上(shang)多(duo)運(yun)動(dong)一(yi)段(duan)才(cai)能(neng)開(kai)始(shi)供(gong)油(you),從(cong)而(er)使(shi)供(gong)油(you)開(kai)始(shi)時(shi)間(jian)推(tui)遲(chi)。當(dang)擰(ning)出(chu)調(tiao)整(zheng)螺(luo)栓(shuan)或(huo)換(huan)用(yong)較(jiao)厚(hou)的(de)調(tiao)整(zheng)墊(dian)塊(kuai)、墊片後,柱塞的*diweizhishangyi,shizhusaidexingchengyuliangjianxiao。suoyi,zaiweixiutiaoshipenyoubengshi,shouxianyingjianzhacixingchengyuliang,yipandingpenyoubengshifouhaiyunxutiaozheng。jianzhashi,yinggenjupenyoubengdebutongjiegoucaiyongxiashubutongfangfa:a)轉動凸輪軸,將柱塞頂至上止點後,拆下出油閥及閥座,用深度遊標尺測量。b)柱塞被頂至上止點後,用螺絲刀撬起柱塞彈簧的彈簧座,使柱塞上升到*高點。然後用厚薄規插入柱塞下平麵與挺杆調整螺栓之間測量。柱塞的標準行程餘量約為1.5mm,磨損後的極限行程餘量應不小於0.5mm.
5、忌汽缸間隙測量不準
在(zai)測(ce)量(liang)汽(qi)缸(gang)間(jian)隙(xi)時(shi),未(wei)能(neng)在(zai)活(huo)塞(sai)裙(qun)部(bu)垂(chui)直(zhi)於(yu)活(huo)塞(sai)銷(xiao)孔(kong)的(de)方(fang)向(xiang)測(ce)量(liang),而(er)在(zai)其(qi)它(ta)方(fang)向(xiang)測(ce)量(liang)。鋁(lv)合(he)金(jin)活(huo)塞(sai)的(de)結(jie)構(gou)特(te)點(dian)是(shi)上(shang)小(xiao)下(xia)大(da),為(wei)一(yi)錐(zhui)體(ti),且(qie)裙(qun)部(bu)斷(duan)麵(mian)為(wei)橢(tuo)圓(yuan)形(xing),所(suo)以(yi)沿(yan)圓(yuan)周(zhou)方(fang)向(xiang)的(de)氣(qi)缸(gang)間(jian)隙(xi)並(bing)不(bu)相(xiang)等(deng)。測(ce)量(liang)時(shi),規(gui)定(ding)以(yi)橢(tuo)圓(yuan)長(chang)軸(zhou)方(fang)向(xiang)的(de)間(jian)隙(xi)為(wei)準(zhun),即(ji)測(ce)量(liang)活(huo)塞(sai)裙(qun)部(bu)垂(chui)直(zhi)於(yu)活(huo)塞(sai)銷(xiao)孔(kong)方(fang)向(xiang)的(de)間(jian)隙(xi)。這(zhe)樣(yang)測(ce)量(liang)比(bi)較(jiao)方(fang)便(bian)、zhunque,erqiezaiwangfuyundongzhong,huosaiqunbuchuizhiyuhuosaixiaokongdefangxiangyinshoucexiangyalidezuoyongermosunjiaoda,suoyi,celiangqigangjianxishi,yingzaihuosaiqunbuchuizhiyuhuosaixiaokongdefangxiangceliang。
6、忌活塞明火加溫
由(you)於(yu)活(huo)塞(sai)與(yu)活(huo)塞(sai)銷(xiao)是(shi)過(guo)盈(ying)配(pei)合(he),所(suo)以(yi)在(zai)安(an)裝(zhuang)活(huo)塞(sai)銷(xiao)時(shi),應(ying)先(xian)使(shi)活(huo)塞(sai)受(shou)熱(re)膨(peng)脹(zhang),這(zhe)時(shi),有(you)些(xie)維(wei)修(xiu)人(ren)員(yuan)就(jiu)會(hui)將(jiang)活(huo)塞(sai)放(fang)在(zai)明(ming)火(huo)上(shang)直(zhi)接(jie)加(jia)熱(re),這(zhe)樣(yang)的(de)做(zuo)法(fa)是(shi)非(fei)常(chang)錯(cuo)誤(wu)的(de),因(yin)為(wei)活(huo)塞(sai)各(ge)部(bu)位(wei)薄(bo)厚(hou)不(bu)均(jun),熱(re)脹(zhang)冷(leng)縮(suo)程(cheng)度(du)就(jiu)會(hui)不(bu)一(yi)樣(yang),明(ming)火(huo)加(jia)熱(re)會(hui)使(shi)活(huo)塞(sai)受(shou)熱(re)不(bu)均(jun),容(rong)易(yi)引(yin)起(qi)變(bian)形(xing);huosaibiaomianhaihuifuzhetanhui,jiangdihuosaideshiyongshouming。ruguohuosaidadaoyidingwenduhouziranlengque,qijinxiangzuzhihuizaodaosunhuaibingshinaimoxingnengdadajiangdi,qishiyongshoumingyehuimingxiansuoduan。zaianzhuanghuosaixiaoshi,kejianghuosaifangzaireyouzhongjunyunjiareshiqihuanmanpengzhang,qiebukeyongminghuozhijiejiawen。
7、忌用砂布打磨軸瓦
duiyuyixiejingyanbuzudexiuligonglaishuo,guawashiyixiangnandujiaogaodegongzuo,youyuguawajishuhennanzhangwo,suoyizhouwajiubuyidadaojishuyaoqiu,weici,yourenzaigenghuanzhouwashi,weizengdazhouwayuquzhoudejiechumianji,jiuyongshabudamoyidaitiguawa。zhezhongfangfazaishijiweixiuzhongshijibukequde,yinweishabushangdemolijiaoying,erzhouwahejinquejiaoruan,zheyangzaidamoshishalihenrongyiqianruhejinnei,chaiyoujigongzuoshihuijiasuzhoujingdemosun,suoduanquzhoudeshiyongshouming。
8、忌螺栓擰得太緊
工程機械在拆裝過程中,很多部位的螺栓都是有規定轉矩要求的,比如傳動箱、汽缸蓋、輪轂、lianganheqianqiaodengbuwei,ningjinlijuzaishuomingshuzhongdouyouzhuanmenguiding,qiebukesuiyigaibian。danshihenduoshiyongrenyuandouwurenweijinyixiehuigenganquan,danshiningdetaijinhuizaochengluodinghuoluoshuanzheduan,yekenengyouyuluowenhuakoueryinqiguzhang。
9、忌輪胎氣壓太高
輪(lun)式(shi)工(gong)程(cheng)機(ji)械(xie)的(de)輪(lun)胎(tai)充(chong)氣(qi)壓(ya)力(li)是(shi)決(jue)定(ding)其(qi)使(shi)用(yong)壽(shou)命(ming)和(he)工(gong)作(zuo)效(xiao)率(lv)的(de)重(zhong)要(yao)因(yin)素(su)。輪(lun)胎(tai)氣(qi)壓(ya)過(guo)高(gao)或(huo)過(guo)低(di)都(dou)會(hui)影(ying)響(xiang)其(qi)使(shi)用(yong)壽(shou)命(ming),同(tong)時(shi)也(ye)不(bu)利(li)於(yu)安(an)全(quan)行(xing)車(che),尤(you)其(qi)是(shi)在(zai)炎(yan)熱(re)的(de)夏(xia)季(ji)。科(ke)學(xue)的(de)充(chong)氣(qi)標(biao)準(zhun)應(ying)該(gai)是(shi):以輪胎的標準氣壓為基準,隨著氣溫的變化,對輪胎氣壓略有調整才對。例如:夏季應比冬季低5%-7%,因考慮到夏季氣溫高,氣體受熱,壓力增高,相反冬季必須達到標準氣壓或略低一點。
10、忌水箱開鍋驟加冷水
發動機超負荷作業、散(san)熱(re)不(bu)好(hao)或(huo)水(shui)箱(xiang)缺(que)水(shui)都(dou)會(hui)造(zao)成(cheng)水(shui)箱(xiang)開(kai)鍋(guo),此(ci)時(shi)如(ru)果(guo)立(li)刻(ke)加(jia)入(ru)冷(leng)水(shui),就(jiu)會(hui)導(dao)致(zhi)缸(gang)蓋(gai)和(he)缸(gang)體(ti)炸(zha)裂(lie)。因(yin)此(ci),使(shi)用(yong)中(zhong)一(yi)旦(dan)發(fa)現(xian)水(shui)箱(xiang)開(kai)鍋(guo),應(ying)采(cai)取(qu)應(ying)急(ji)措(cuo)施(shi)停(ting)止(zhi)作(zuo)業(ye),使(shi)柴(chai)油(you)機(ji)冷(leng)卻(que)水(shui)自(zi)行(xing)降(jiang)溫(wen)。
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