主机高压油泵概述Word文档下载推荐.docx
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主机高压油泵概述Word文档下载推荐.docx
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用手转动滚轮,检查其是否转动得平稳,无额外阻力,容易转动
Alsoinspectthesurfaceoftherollerforpossibledamagemarks,seizuresorscratches.Makesurethattherearenotracesofbearingmetalleftintherollerguidehousing.
还要检查滚轮表面是否损坏,咬住或刮擦的痕迹,及里面是否有轴承金属的粉末等
Checktheclearanceintheslidebearingbyliftingtherollerrelativetotherollerguideandmeasuringthedifferenceindistancebetweenthecamdiscandtherollerintheupperandlowerpositionsoftheroller.
将滚轮提起,检查滑动轴承的间隙及当凸轮片在最高,最低位置时同滚轮间的间隙差
3.Lowertherollerguideontothefuelcamagain.
SeeProcedure909-16.
按909-16的步骤将导向机构放回凸轮上方
Rollerguideremovedfromengine
当将滚轮导向机构卸下时的检查方法
Amoresuitableandreliablemethodistochecktherollerguideandthebearingclearanceaftertherollerguidehasbeendismounted:
更准确,更可靠的检查方法是将导向机构拆下后进行检查
4.Dismounttherollerguidefromtheengine.
SeeProcedure909-15.2.
按909-15.2的方法将导向机构拆下
5.Checkthesurfaceoftherollerandtheslidingsurfacesoftherollerguide.andmeasureanyovalness.
检查滚轮的表面及导向机构的滑动表面,测量椭圆形的表面
6.Turntherollerguideupsidedownandlanditinaverticalpositiononacoupleofplanks,withtherollerhangingfreely.
将导向机构直立的倒放在两块厚木板上,保持滚轮的自由转动(不要通过影响其转动的方法来放置机构)
Measuretheclearanceintheslidebearingbyplacingadialgaugeagainsttherollerandliftingtherollerasmuchastheclearancepermits.
在滚轮上方放一百分表,尽量提起滚轮,来测量滑动轴承的间隙
FuelPumpRollerGuideDismantling
高压油泵导向机构拆解
Note!
注意
Beforedismantlinganypartoffuelpump,makesurethatthepumphasbeenrelievedofpressureandthatalloilhasbeendrainedoff.
在拆解高压油泵任何部件之前,都要先确定已经释放压力且已将燃油泄放掉
1.Dismantlethetopcoverwiththebarrel/plungerassembly.
SeeProcedure909-5.2.
按步骤909-5.2.的方法首先拆掉高压油泵的顶盖及柱塞套筒偶件
2.Turntheengineuntiltherollerguiderestsonthelowermostpartofthefuelcam.
主机进行盘车,直到滚轮处在凸轮的基圆上为此.
Inspectthepositionofthefuelcamthroughtheinspectioncoveropeningonthecamshafthousing.
通过拆掉的凸轮轴系外壳上检查用盖板来确定凸轮的位置
3.Loosenandremovethenutsontheshortstuds.
先拆掉两只短螺柱上的螺帽,
Thenloosenthenutsonthetwolongthreadedstudssuccessivelyuntiltherollerguidespringisrelieved.
再一次性的将两只长螺柱上的螺帽松开直到导向机构的弹簧全送开为此
Mounttheliftingtoolonthefuelpumpstudsandhooktheengineroomcraneontotheliftingtool.
装上起吊工具,用机舱天吊挂住吊具
Removethenutsfromthetwolongthreadedstudsandliftawaythefuelpumphousing.
拿掉两只长螺柱上的螺栓,将高压油泵外壳吊起
Whenliftingthefuelpumphousing,takecarenottodamagethethreadsonthestuds.
当吊起油泵外壳时,注意不要损坏螺柱螺纹
4.Liftthespringoutoftherollerguide.
拿掉导向机构上面的弹簧
Loosenandremovethescrewsfromthesealingcapontopoftherollerguideinsidethepumpbase.
将高压油泵内导向机构上方密封盖的螺栓卸掉
5.Removethesealingcapfromtherollerguide.
从高压油泵上拿掉密封盖
Unscrewthetwonutsfromthepumpbase,andliftawaythepumpbase.
拆下油泵基座上的两个螺栓将基座吊走,
Whenlifting,takecarethatthebushingofthepumpbaseslidesagainsttheneckoftherollerguidewithoutscratching.
当起吊的时候,小心基座轴衬不要同导向机构的轴颈产生刮擦
6.Mounttherollerguideliftingtoolasfollows:
按如下方式安装导向机构起吊工具
·
Liftthelockplateofthetoolupontheshaftofthetool.
将起吊工具的锁住用卡片轴向提起
Positionthetoolsothatitsfootrestsonthethrustpieceinthebayonetjointoftherollerguide.
将工具底部放在导向机构的卡口接头上
Turnthetool90º
soastoallowthefoottoengageproperlyinthebayonetjoint.
转动工具90º
使其底部同卡口正好接合
Lowerthelockplate,therebysecuringthefootinthelockedposition.
放下卡片,将工具锁在现在的位置上
Lifttherollerguideoutoftherollerguidehousing,usingthe
crane.
用天吊将导向机构吊出
Whenlifting,takecarethattheslidesurfacesoftherollerguide
donotscrapeagainsttherollerguidebushing.
起吊时小心滚轮导向机构不要刮到轴衬上,
Landtherollerguideonwoodenplanks.
将导向机构放到厚木方上
7.Checktherollerguide.
SeeProcedure909-15.1.
检查导向机构按909-15.1的步骤
FuelPumpRollerGuideOverhaul
1.Inspectandcheckthefuelpumprollerguide.
按909-15.1的步骤检查导向机构
2.ItisrecommendedthattherollerguideshouldONLYbedismantledif
当下列情况出现时,才有必要解体导向机构
irregularitieswhenturningtheroller,
滚轮转动异常不规则
damagetotheroller,
滚轮有损坏
largerclearancethanstatedontheDatasheet,
部件间间隙过大
seizuremarksontheslidesurfaces,
滑动面有咬合的痕迹
Havebeenobservedwhencheckingtherollerguide.
当检查时发现以上情况
Note
Fordisassemblingoftherollerguide,contactaHANSHINDIESELrepairshop.
解体导向机构时要同HANSHINDIESEL柴油机修理商取得联系
3.Ifnoirregularitiesarefound,justcleanandlubricatetherollerguidebeforeremountingitintherollerguidebushing.
如未发现异常,只需将其清洁润滑后装复.
FuelPumpRollerGuideMounting
1.Lubricatetherollerguidewithplentyofcamshaftlubricatingoil,
Andmountitintherollerguidebushing,usingtheliftingtool.
将滚轮导向机构用凸轮轴滑油充分润滑之后,用起吊工具将其装会到轴衬之中.
Duringmounting,takecarenottoscratchtheslidingsurfacesoftherollerguide.
装复时小心不要刮到它的滑动面
2.Aftermountingtherollerguide,checktheclearancebetweentherollerguideandtheguideplatemountedintherollerguidebushing.
将导向机构装复后,测量它同导向板之间的间隙,
Turnthecamshaftsothattherollerguideisliftedapprox.20mm.
转动凸轮轴,将导向机构向上提起约20mm
TheclearanceCbetweentherollerguideandtheguideplatemustbethesameatbothends+/_0.1mm.
两端的间隙C之间的差距必须小于0.1mm
3.Beforemountingthepumpbaseontherollerbushing,replacetheO-ringbetweenthesealingbushandthebottomofthepumpbase.
安装高压油泵基座之前,更换密封用的衬套同油泵基座底部之间的O-ring
4.Mountthepumpbaseontherollerguidebushing,andtightenthenuts.
将油泵基座装复,上紧螺帽.
5.Replacethescraperringsinthesealingcapasfollows:
按以下方式更换密封盖底部的刮油环.先拧掉密封盖底部螺栓,螺帽
Loosenandremovethescrewsandnutsfromthebottomofthecap,removetheretainingflangeandringholderwithscraperring.
拿掉护圈法兰及刮油环,刮油环支架
6.Replacetheaxialscraperringinthebottomofthecap.CheckthattheO-ringandscraperringaremountedcorrectly.Seethesketch.
更换轴向的刮油环,按简图所示方式检查其是否安装正确
7.RemovethescraperringandO-ringfromtheringholder.
从支架中取出刮油环及O-ring,
PlacethenewO-ringintheringholder.
放入新的密封圈
Beforemounting,thenewscraperringmustbeheatedin100℃hotwateroroilforatleastfiveminutes.
新的刮油环在放入之前须先放入100℃的热水或油中加热至少5分钟
Whenmountingthescraperringinthegroove,foldtheringwithoutmakinganysharpedges,andbecarefulnottocutthescraperringontheedgeoftheringgroovewhenpressingitin.
将刮油环放入环槽中时,要将其部分折回(不产生任何尖锐的棱角),将刮油环压入环槽中时不要被环槽边缘割到
CheckthattheO-ringandscraperringaremountedcorrectly.
Seethesketch.
按图所示中检查O-ring和刮油环是否正确安装,
8.Assemblethesealingcap,theringholderandretainingflange.
装复密封盖,刮油环支架及护圈法兰
Tightenthenutsonthescrews.
上紧螺栓螺帽
Aftertightening,checkthattheholdercanberemove.
上紧之后,检查确定支架仍可移动
9.Mountanew0-ringinthegrooveontopoftherollerguideandonthepumpbase.
在油泵底座及导向机构上部之间的环槽内换上新的密封圈
10.Mountthesealingcapovertherollerguide.
在导向机构上部装上密封盖
Tightenthesealingcaptothetopoftherollerguide.
上紧导向机构上的密封盖螺母
Tightenthenuts.
上紧螺母
Lockthenutswithloctite.
用气压泵上紧锁住螺母
Landthespringontherollerguideinsidethepumpbase.
在油泵底座内的导向机构上部装上弹簧.
11.Mountthefuelpumphousing.SeeProcedure909-4.4.
按909-4.4步骤装上油泵本体
12.Mountthetopcoverandbarrel/plungerassembly.
SeeProcedure909-5.4.
装复柱塞套筒偶件及油泵顶盖
Therollerguidecanbepartiallycheckedwhilemountedontheengine.
当导向机构装
Dismantling
拆解
1.Shutoffthefueloilinlet.
关掉燃油进口
Loosentheunionofthefueloilreturnpipetoallowtheoiltoleavethepumpandhigh-pressurepipes.
打开燃油回油管系,放掉油泵中的燃油.
Dismountthedrainoilpipefromthetopcoverandtheairpipeconnectionstothepuncturevalve.
Dismountthehigh-pressurepipes(topcover/fuelvalves).
卸下油泵顶部的燃油泄放管及泄放阀的空气管拆下高压油管,油泵顶盖以及油头
Removetheindexpointerandprotectiveguard,releasethelinkfortheregulatingdrive,anddismounttheflangeforthetoothedracklead-in.Pulloutthetoothedrackasfaraspossible.
移开针型指示器和保护装置,卸掉固定调整驱动器的卡环,拆掉齿条引入法兰,并尽快的拿出齿条.,
2.Dismountthepuncturevalvefromthetopcover.
Usetheextractortoolanddismountthesuctionvalve.
拆下泄放阀,用拉伸器卸下进口阀
Removethetopcoverfixingnuts,aswellasthetwoscrewsinthetopcover.
(Atthisstage,itispracticaltomeasuretheleadofthefuelpump).
拆下固定油泵顶盖的固定螺栓以及顶盖上的螺栓,
这一步,部分是为了测量高压油泵的喷油提前量
3.Screwtheliftingtoolforfuelpump(withoutmeasuringpin)intothetopcover.Screwthecentrescrewofthetoolintothepumpplunger.Thestopringonthecentrescrewmustbeloose
在顶盖上拧上起吊工具(不带测量杆)将起吊工具中间的螺栓拧在油泵的柱塞上,中间螺栓上的此动环一定要松开.
Pullatthecentrescrewofthetooltolifttheplungerclearofthebayonetjointintherollerguideandthemilledrecessoftheregulatingguide.
拉起起吊工具的中间螺栓,清除导向机构接合处的毛刺和粉碎物
Todothisitmaybecomenecessarytomovethetoothedrackandthecentrescrewofthetoolinrelationtoeachother.Whenthefootoftheplungerhasbeenliftedclearoftherollerguideandregulatingguide,movedownthestopringofthetooltoabutagainstthecross-pieceofthetool,andsubsequentlylockthestopringbymeansofthelockscrew.
移动齿条和起吊工具中间螺杆的相互关联是很必要的,当提起柱塞底部清洁导向机构和调整机构时,中间螺杆的
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