2001年日产qx4维修手册英文

BRAKESECTIONSECTION SupplementalRestraintSystem(SRS)BAGandSEATBELTPRE- PrecautionsforBrake WiringDiagramsandTrouble SpecialService CommercialService NOISE,VIBRATIONANDHARSHNESS(NVH) NVHTroubleshooting ON-VEHICLE CheckingBrakeFluid CheckingBrake ChangingBrake BleedingBrake BRAKEHYDRAULIC Hydraulic PROPORTIONINGVALVE RemovalandInstallation(Built-in LOADSENSINGVALVE Removaland BRAKEPEDALAND Removaland MASTER

BRAKE On-vehicle

al CHECK FRONTDISC Pad BrakeBurnishing REARDRUM WHEEL WheelCylinder PARKINGBRAKE Removaland

ATTFPDAXSTRSBTHASCELCONTENTS ABSHydraulic System System CONTROLUNIT(BUILT-INABSACTUATORANDELECTRIC ABSACTUATORANDELECTRIC GSENSOR(4WDMODELS ComponentPartsandHarnessConnector WiringDiagram- ONBOARDDIAGNOSTIC SELF-DIAGNOSIS HOWTOREADSELF-DIAGNOSTICRESULTS(MALFUNCTIONCODES) HOWTOERASESELF-DIAGNOSTICRESULTS(MALFUNCTION CONSULT-IIAPPLICATIONTO ECU(ABSCONTROLUNIT)PART SELF-DIAGNOSIS SELF-DIAGNOSTICRESULTS DATAMONITOR ACTIVETEST DATAMONITOR ACTIVETEST TROUBLEDIAGNOSIS- HowtoPerformTroubleDiagnosesforandAccurate TROUBLEDIAGNOSIS-BASIC Preliminary GroundCircuit ABSACTUATORANDELECTRICUNIT TROUBLEDIAGNOSIS- MalfunctionCode/Symptom TROUBLEDIAGNOSESFORSELF-DIAGNOSTIC

WheelSensoror DIAGNOSTIC ABSActuatorSolenoidValveorSolenoidValve DIAGNOSTIC MotorRelayor DIAGNOSTIC Low DIAGNOSTIC GSensorand DIAGNOSTIC ELECTRICALCOMPONENT Control DIAGNOSTIC TROUBLEDIAGNOSESFOR ABSWorks UnexpectedPedal LongStop ABSDoesNot PedalVibrationand WarningLampDoesNotComeOnIgnitionSwitchIsTurned WarningLampStaysOnWhenIgnitionIsTurned VehicleVibratesExcessivelyWhenABSIs REMOVALAND FrontWheel RearWheel Fronsor RearSensor G ABSActuatorandElectric SERVICEDATAANDSPECIFICATIONS General Disc Drum Brake ParkingBrake bo.IoNESupplementalRestraintSystem(SRS)“AIRand“SEATBELTPRE-TheSupplementalRestraintSystemsuchas“AIRBAG”and“SEATBELTPRE-TENSIONER”usedalong aseatbelt,helpstoreducetheriskorseverityofinjurytothedriverandfrontpassengerforcertaintypescollision.TheSRSsystemcompositionwhichisavailabletoINFINITIQX4isas ForafrontalTheSupplementalRestraintSystemconsistsofdriverairbagmodule(locatedinthecenteroftheingwheel),frontpassengerairbagmodule(locatedontheinstrumentpanelonpassengerside),seatbeltpre-tensioners,adiagnosissensorunit,warninglamp,wiringharnessandspiralForasideTheSupplementalRestraintSystemconsistsofsideairbagmodule(locatedintheoutersideoffrontseat),salitesensor,diagnosissensorunit(oneofcomponentsofairbagsforafrontalcollision),wiringharness,warninglamp(oneofcomponentsofairbagsforafrontalcollision).InformationnecessarytoservicethesystemsafelyisincludedintheRSsectionofthisService ToavoidrenderingtheSRSinoperative,whichcouldincreasetheriskofalinjuryordeathintheeventofacollisionwhichwouldresultinairbaginflation,allmaintenancemustbebyanauthorizedINFINITIImpropermaintenance,includingincorrectremovalandinstallationoftheSRS,canleadtoper-ATsonalinjurycausedbyunintentionalactivationofthesystem.ForremovalofSpiralCableandAirBagModule,seetheRSsection.DonotuseelectricaltestequipmentonanycircuitrelatedtotheSRSunlessinstructedtointhisServiceManual.Spiralcableandwiringharnessescoveredwithyellowinsulationt eitherjustbeforetheharnessconnectorsorforthecompleteharnessarerelatedtothe PrecautionsforBrakeUsebrakefluid“DOTNeverreusedrainedbrake

NBBR0002Becarefulnottosplashbrakefluidonpaintedareas;itmaycausepaintdamage.Ifbrakefluidissplashedonpaintedareas,washitawaywithwaterimmediay.Tocleanmastercylinderparts,discbrakecaliperpartsorwheelcylinderparts,usecleanbrakefluid.Neverusemineraloilssuchasgasolineorkerosene.Theywillruinrubberpartsofhydraulicsystem.UseflarenutwrenchwhenremovingandinstallingbrakeAlwaystorquebrakelineswheninstalling.Cleanbrakeswithavacuumdustcollectortominimizeriskofhealthhazardfrompowdercausedbyfriction.

WiringDiagramsandTrouble

Whenyoureadwiringdiagrams,refertotheGI-11,“HOWTOREADWIRINGEL-9,“POWERSUPPLYROUTING”forpowerdistributioncircuitWhenyouperformtroublediagnoses,refertothefollowing:GI-35,“HOWTOFOLLOWTESTGROUPINTROUBLEGI-24,“HOWTOPERFORMEFFICIENTDIAGNOSISFORANELECTRICALSpecialServiceTheactual sofKent-Mooretoolsmaydifferfromthoseofspecialservicetoolsillustrated

Toolnumber(Kent-MooreNo.)ToolnameToolnumber(Kent-MooreNo.)ToolnameRemovingrearwheelsensor(J25852-RearwheelCommercialServiceFlarenutTorqueRemovingandinstallingeachbrakea:10mm(0.39BrakefluidpressureMeasuringbrakefluidRearwheelsensorrotorInstallingrearwheelsensora:75mm(2.95in)b:63mm(2.48in)

NOISE,VIBRATIONANDHARSHNESSNOISE,VIBRATIONANDHARSHNESS(NVH)NVHTroubleshootingUsethechartbelowtohelpyoufindthecauseofthesymptom.Ifnecessary,repairorreplacethese:BR-Possiblecauseand ReferenceShimmy,Liningsorpads-BR-22,Liningsorpads-unevenBR-22,ReturnspringBR-ShimsBR-Rotorordrum—Rotorordrum—RotorordrumBR-24,Rotorordrum—Rotorordrum—Rotorordrum—RotorthicknessBR-DrumoutofBR-PROPELLERPD-PD-DRIVEAX-AX-SU-SU-ROADSU-ST-CheckingBrakeFluidCheckfluidlevelin .ItshouldbebetweenandMinlineson Iffluidlevelisextremelylow,checkbrakeIfthebrakewarninglampcomeson,checkbrakefluidlevelswitchandparkingbrakeCheckingBrake

Ifleakageoccursaroundjoints,retightenor,ifnecessary,replacedamagedparts.Checkbrakelines(tubesandhoses)forcracks,deteriorationorotherdamage.ReplaceanydamagedCheckforoilleakagebyfullydepressingbrakepedalwhileengineisrunning. ChangingBrakeRefillwithnewbrakefluid“DOT

NBBR0008Alwayskeepfluidlevelhigherthanminimumlineonres-ervoir.NeverreusedrainedbrakeBecarefulnottosplashbrakefluidonpaintedareas;itmaycausepaintdamage.Ifbrakefluidissplashedonpaintedareas,washitawaywithwaterimmediay.Cleaninsideofreservoir,andrefillwithnewbrakeConnectavinyltubetoeachairbleederDrainbrakefluidfromeachairbleedervalvebydepressingbrakepedal.Refilluntilbrakefluidcomesoutofeachairbleedervalve.Usesameprocedureasinbleedinghydraulicsystemtorefillbrakefluid.Referto“BleedingBrakeSystem”,BR-

BleedingBrake

Carefullymonitorbrakefluidlevelatmastercylinderdur-ingbleedingoperation.Ifmastercylinderis edtohaveairinside,bleedairfrommastercylinder.Referto“Installation”,“MAS-TERCYLINDER”,BR-18.Fillreservoirwithnewbrakefluid“DOT3”.Makesureitisfullatalltimeswhilebleedingairoutofsystem.Placeacontainerundermastercylindertoavoidspillageofbrakefluid.TurnignitionswitchOFFanddisconnectABSactuatorandelectricunitconnectorsorbatterygroundcable.BleedairinthefollowingLSVairbleederLeftrearRightrearLeftfrontRightfrontConnectatransparentvinyltubetoairbleederFullydepressbrakepedalseveralWithbrakepedaldepressed,openairbleedervalvetoreleaseCloseairbleederReleasebrakepedalRepeatsteps2.through5.untilclearbrakefluidcomesoutofairbleedervalve.Tightenairbleeder:7-9N·m(0.7-0.9kg-m,61-78in-Hydraulic

.icm

Removal汽车专业维修资料中

Becarefulnottosplashbrakefluidonpaintedareas;itmaycausepaintdamage.Ifbrakefluidissplashedonpaintedareas,washitawaywithwaterimmediay.Allhosesmustbefreefromexcessivebending,twistingandpulling.ConnectvinyltubetoairbleederDrainbrakefluidfromeachairbleedervalvebydepressingbrakepedal.Removeflarenutconnectingbraketubeandhose,thenwith-drawlockspring.Coveropeningstoprevententranceofdirtwheneverdiscon-nectingbrakeline.

Checkbrakelines(tubesandhoses)forcracks,deteriorationorotherdamage.Replaceanydamagedparts.Refillwithnewbrakefluid“DOTNeverreusedrainedbrakeTightenallflarenutsandconnectingFlare:15-17N·m(1.5-1.8kg-m,11-13ft-lb)Connecting:17-19N·m(1.7-2.0kg-m,12-14ft-

RefilluntilnewbrakefluidcomesoutofeachairbleederBleedair.Referto“BleedingBrakeSystem”,BR-

CarefullymonitorbrakefluidlevelatmasterUsenewbrakefluid“DOTBecarefulnottosplashbrakefluidonpaintedareas;itmaycausepaintdamage.Ifbrakefluidissplashedpaintareas,washitawaywithwaterimmediaDepresspedalslowlywhenraisingfrontbrake Checkrearbrakepressure2secondsafterfrontbrakepressurereachesspecifiedvalue.DisconnectharnessconnectorsfromABSactuatorandelectricunitbeforeRemovefrontLH ConnecttooltoairbleedersonfrontLHbrakecaliperandLHorRHbrakewheelInstallfrontLH BeforeinstallingfrontLHtire,confirmthetoolisnotthefrontLHBleedairfromthe CheckfluidpressurebydepressingbrakeAppliedpressure(Frontbrake)6,375Appliedpressure(Frontbrake)6,375(65,Outputpressure(Rearbrake)3,432-(35-39,498-Ifoutputpressureisoutofspecifications,replacemastercylinderassembly(built-inBleedairafterdisconnectingthetool.Referto“BleedingBrakeSystem”,BR-8. InstallfrontLHRemovalandInstallation(Built-in NBBR0117AlwaysreplacetogetherwithmastercylinderasanReferto“MASTERCYLINDER”,BR-

CarefullymonitorbrakefluidlevelatmasterUsenewbrakefluid“DOTBecarefulnottosplashbrakefluidonpaintedareas;itmaycausepaintdamage.Ifbrakefluidissplashedonpaintareas,washitawaywithwaterimmediay.DepresspedalslowlywhenraisingfrontbrakeCheckrearbrakepressure2secondsafterfrontbrakepressurereachesspecifiedvalue.DisconnectharnessconnectorsfromABSactuatorandelectricunitbeforechecking.Parkvehicleonalevelsurfacewithvehicle*Fuel,radiatorcoolantandengineoilfull.Sparetire,jack,handtoolsandmatsindesignatedpositions.Pressalevertothestopperbolt,thenchecklength“B”asfol-LengthReference(Length207.7mm(8.18217.3mm(8.56Iflength“B”isnotwithinspecification,adjussorspringRemovalandRefillwithnewbrakefluid“DOT

Becarefulnottosplashbrakefluidonpaintedareas;itmaycausepaintdamage.Ifbrakefluidissplashedonpaintedareas,washitawaywithwaterimmediay.DonotreuseLoadSensingValveonceitisReplacedamagedLoadSensingValveasanWhendisassembling,applymulti-purposegreasetoallrubbingareas.ht/p4lia.(oont’d)TightenallflarenutsandmountingFlare:15-17N·m(1.5-1.8kg-m,11-13ft-lb)RefilluntilnewbrakefluidcomesoutofeachairbleederBleedair.Referto“BleedingBrakeSystem”,BR-

Removaland

CheckbrakepedalforfollowingBrakepedalClevispinCrackofanyweldedCrackordeformationofclevispin

Checkbrakepedalfreeheightfrommetal FreeRefertoSDS(BR- DepressedheightRefertoSDS(BR-83).

Underforceof490N(50kg,110lb)withenginerun- threadedendofstoplampswitchandASCDswitch0.3-1.0mm(0.012-0.039 Pedalfree1-3mm(0.04-0.12Ifnecessary,adjustbrakepedalfreeo.(ont’d)Loosenlocknutandadjustpedalfreeheightbyturningbrakeboosterinputrod.Thentightenlocknut.Makesurethattipofinputrodstays Adjustclearance“C1”and“C2”withstoplampswitchASCDswitchrespectively.ThentightenlockCheckpedalfree MakesurethatstoplampisoffwhenpedalisCheckbrakepedal’sdepressedheightwhileengineisrunning.Ifdepressedheightisbelowspecifiedvalue,checkbrakesys-temforleaks,accumulationofairoranydamagetonents(mastercylinder,wheelcylinder,etc.).Thenmakenec-essaryRemoval汽车专业维修资料中

Becarefulnottosplashbrakefluidonpaintedareas;itmaycausepaintdamage.Ifbrakefluidissplashedonpaintedareas,washitawaywithwaterimmediay.Inthecaseofbrakefluidleakagefromthemastercylinder,disassemblethecylinder.Thencheckpistoncupsfordeformationorscratchesandreplacenecessaryparts.ConnectavinyltubetoairbleederDrainbrakefluidfromeachairbleedervalve,depressingbrakepedaltoemptyfluidfrommastercylinder.RemovebrakepipeflareRemovemastercylindermountingBendclawsofstoppercap

RemovepistonstopperwhilepistonispushedintoRemovepistonIfitisdifficulttoremovesecondarypistonassembly,gradu-allyapplycompressedairthroughfluidDrawout

Checkmastercylinderinnerwallforpinholesorscratches.Replaceif

NBBR0022Insertsecondarypistonassembly.TheninsertprimarypistonPayattentiontodirectionofpistoncupsinfigureatleft.Also,insertpistonssquarelytoavoidscratchesoncylin-derbore.PayattentiontoalignmentofsecondarypistonslitwithvalvestoppermountingholeofcylinderInstallstopperBeforeinstallingstoppercap,ensurethatclawsare Push ealsintocylinder PushreservoirintocylinderInstallvalvestopperwhilepistonispushedinto Installation车专业维修资料中

Refillwithnewbrakefluid“DOTNeverreusedrainedbrake

Placemastercylinderontobrakeboosterandsecuremount-ingnutslightly.:12-15N·m(1.2-1.5kg-m,9-11ft-lb)FillupreservoirwithnewbrakePlugallportsonmastercylinderwithfingerstopreventairsuctionwhilereleasingbrakepedal.Havedriverdepressbrakepedalslowlyseveraltimesuntilnoaircomesoutofmastercylinder.FitbrakelinestomasterTightenflare:15-17N·m(1.5-1.8kg-m,11-13ft-lb)Bleedair.Referto“BleedingBrakeSystem”,BR-OPERATING

Depressbrakepedalseveraltimeswithengineoff.exhaustingvacuum,makesurethereisnochangeinpedal Depressbrakepedal,thenstartengine.Ifpedalgoesslightly,operationisAIRTIGHT Startengine,andstopitafteroneortwominutes.Depressbrakepedalseveraltimesslowly.BoosterisairtightifpedalLCstrokeislesseachDepressbrakepedalwhileengineisrunning,andstopwithpedaldepressed.Thepedalstrokeshouldnotchangeafterholdingpedaldownfor30

NBBR0025Becarefulnottosplashbrakefluidonpaintedareas;maycausepaintdamage.Ifbrakefluidissplashedonpaintedareas,washitawaywithwater Becarefulnottodeformorbendbrakepipes,removalof OUTPUTRODLENGTH

NBBR0026Applyvacuumof−66.7kPa(−500mmHg,−19.69inHg)tobrakeboosterwithahandvacuumpump.Addpreloadof19.6N(2.0kg,4.4lb)tooutputCheckoutputrodSpecified10.275-10.525mm(0.4045-0.4144

Installation车专业维修资料中

Becarefulnottodeformorbendbrakepipesduringinstal-lationofbooster.ReplaceclevispinifRefillwithnewbrakefluid“DOTNeverreusedrainedbrakeTakecarenottodamagebrakeboostermountingboltthreadwheninstalling.Duetothenarrowangleofinstallation,thethreadscanbedamagedbythedashBeforefittingbooster,temporarilyadjustclevistodimensionFitbooster,thensecuremountingnuts(brakepedalbrackettobrakebooster)lightly.ConnectbrakepedalandboosterinputrodwithclevisSecuremountingSpecification:13-16N·m(1.3-1.6kg-m,9-12ft-Installmastercylinder.Referto“Installation”in“MASTERCYLINDER”,BR-18.Adjustbrakepedalheightandfreeplay.Referto“Adjustment”in“BRAKEPEDALANDBRACKET”,BR-14.Securelocknutfor:16-22N·m(1.6-2.2kg-m,12-16ft-lb)Bleedair.Referto“BleedingBrakeSystem”,BR-

Removaland

Wheninstallingvacuumhoses,payattentiontothefollowingDonotapplyanyoilorlubricantstovacuumhoseandcheckInsertvacuumtubeintovacuumhoseas Installcheckvalve,payingattentiontoitsHOSESAND

NBBR0030Checkvacuumlines,connectionsandcheckvalveforairtightness,improper entchafingand CHECKConnecttoboosterVacuumshouldConnecttoboosterVacuumshouldConnecttoengineVacuumshouldnot

Components

MainPinTorquememberfixingTorqueShimInner

InnerPadOuterOuterConnectingCopper

MainpinBleedCylinderPistonPistonPad

Cleanbrakeswithavacuumdustcollectortominimizethehazardofairborneparticlesorothermaterials.Whencylinderbodyisopen,donotdepressbrakepedal,orpistonwillpopout.Becarefulnottodamagepistonbootetoilonrotor.Alwaysreplaceshimswhenreplacingpads.Ifshimsarerustedorshowpeelingoftherubbercoat,replacethemwithnewshims.Itisnotnecessarytoremoveconnectingboltexceptfordisassemblyorreplacementofcaliperassembly.Inthiscase,suspendcylinderbodywithwiresoasnottostretchbrakehose.Carefullymonitorbrakefluidlevelbecausebrakefluidwillreturntoreservoirwhenpushingbackpiston.RemovemastercylinderreservoirRemovelowerpin

p48l0o.(oont’d)Opencylinderbodyupward.Thenremovepadretainers,andinnerandoutershims.Standardpad 11.0mm(0.433Padwear 2.0mm(0.079Carefullymonitorbrakefluidlevelbecausebrakefluidwillreturntoreservoirwhenpushingbackpiston.

NBBR0033Cleanbrakepadswithavacuumdustcollectortominimizethehazardofairborneparticlesorothermaterials.SuspendcaliperassemblywithwiresoasnottostretchbrakeRemovetorquememberfixingboltsandconnectingItisnotnecessarytoremoveconnectingboltexceptfordis-assemblyorreplacementofcaliperassembly.Inthiscase,suspendcaliperassemblywithwiresoasnottostretchbrake

Disassebly专业维修资料中

Donotplaceyourfingersinfrontofpiston.DonotscratchorscorecylinderPushoutpistonwithdustsealwithcompressedRemovepistonsealwithasuitableCylinder

Checkinsidesurfaceofcylinderforscore,rust,wear,damageorpresenceofforeignobjects.Ifanyoftheaboveconditionsareobserved,replacecylinderbody.Minordamagefromrustorforeignobjectsmaybeeliminatedbypolishingsurfacewithafineemerypr.Replacecylinderbodyifnecessary.Usebrakefluidtoclean.NeverusemineralCheckpistonforscore,rust,wear,damageorpresenceofforeignobjects.Replaceifanyoftheaboveconditionsareobserved.Pistonslidingsurfaceisplated.Donotpolishwithemeryprevenifrustorforeignobjectsarestucktoslidingsur-SlidePin,PinBoltandPinCheckforwear,cracks,rustorotherdamage.Replaceifanyoftheaboveconditionsareobserved.

Securerotortowheelhubwithatleasttwonuts(M12CheckrunoutusingadialMakesurethatwheelbearingaxialendplayiswithinthespecificationsbeforemeasuring.RefertoAX-4,“FrontWheelum0.1mm(0.004Iftherunoutisoutofspecification,findminimumrunoutposi-tionasfollows:RemovenutsandrotorfromwheelShifttherotoroneholeandsecurerotortowheelhubwithMeasureRepeatstepsa.toc.sothatminimumrunoutpositioncanbeIftherunoutisstilloutofspecification,turnrotorwithon-carbrakelathe(“MAD,DL-8700”,“AMMCO700and705”or

Thicknessvariation(Atleast8um0.015mm(0.0006 Ifthicknessvariationexceedsthespecification,turnrotorwithcarbrake Rotorrepair26.0mm(1.024Insertpistonsealintogrooveoncylinder

Withpistonbootfittedtopiston,insertpistonbootintogrooveoncylinderbodyandinstallpiston.Properlysecurepiston Refillwithnewbrakefluid“DOTNeverreusedrainedbrakeInstallcaliperInstallbrakehosetocaliperInstallallpartsandsecureallBleedair.Referto“BleedingBrakeSystem”,BR-BrakeBurnishing

NBBR0037NBBR0086Whenexperiencingsoftbrakepedalfeelatverylowage,orafterreplacingtherotor,burnishthebrakepadcontactsurfacesaccordingtothefollowingprocedures.Onlyperformthisprocedureundersaferoadandtrafficcon-ditions.Useextremecaution.Drivethevehicleonastraightsmoothroadat50km/h(31Usemediumbrakepedal/footefforttobringthevehicletoacompletestopfrom50km/h(31MPH).Adjustbrakepedal/footpressuresuchthatvehiclestoptimeequals3to5sec-Tocoolthebrakesystem,drivethevehicleat50km/h(31MPH)for1minutewithoutstop.Repeatsteps1to310timesormoretocompletetheburnish-ingprocedure.

Components

ShoeholdBackCheckShoe(leadingAirPiston

RetainerToggleWaveShoe(trailing

PistonWheelAdjusterSpringShoeholdAdjusterReturnspringReturnspring

Cleanbrakeliningwithavacuumdustcollectortominimizethehazardofairborneasbestosorothermaterials.MakesureparkingbrakeleverisreleasedcompleReleaseparkingbrakeleverfully,thenremoveIfdrumishardtoremove,thefollowingproceduresshouldbecarriedout.Removeplug.Thenshortenadjustertomakeclearancebetweenbrakeshoeanddrumasshown.Tightenthetwobolts

0ao.(ont’d)Afterremovingshoeholdpinbyrotatingpushretainer,leadingshoethenremovetrailingshoe.Removespringbyrotatingshoesindirectionarrow. BecarefulnottodamagewheelcylinderpistonRemove DisconnectparkingbrakecablefromtoggleBecarefulnottodamageparkingbrakecablewhenseparat-ingRemoveretainerringwithasuitabletool.Thenseparatetoggleleverandbrakeshoe. WHEELCheckwheelcylinderforCheckforwear,damageandlooseconditions.Replaceifanysuchconditionexists.

WheelCylinder

Checkallinternalpartsforwear,rustanddamage.ReplaceifPayattentionsoasnottoscratchcylinderwheninstallingpis-

uminnerdiameter:296.5mm(11.67

Out-of-roundness:0.03mm(0.0012in)orContactsurfaceshouldbefinefinishedwithNo.120to150emerypr.Usingadrumlathe,lathebrakedrumifitshowsscoring,par-tialwearorsteppedwear.Afterbrakedrumhasbeencompleyreconditionedorreplaced,checkdrumandshoesforpropercontactpattern.CheckliningStandardlining6.1mm(0.240Liningwearlimit1.5mm(0.059

Alwaysperformshoeclearanceadjustment.RefertoBR-Fittogglelevertobrakeshoe(trailingside)withretainerApplybrakegreasetothecontactareas(indicatedbyarrowsandhatching)shownatleft.ShortenadjusterbyrotatingPayattentiontodirectionofLeft-handRight-handConnectparkingbrakecabletotoggleInstallall BecarefulnottodamagewheelcylinderpistonCheckallpartsareinstalledPayattentiontodirectionofadjuster InstallbrakeWheninstallingnewwheelcylinderoroverhaulingwheelcylinder,bleedair.Referto“BleedingBrakeSystem”,BR-Adjustparkingbrake.Referto“Adjustment”,“PARKINGBRAKECONTROL”,BR-31. Components

Removaland

Toremoveparkingbrakecable,removecenterDisconnectwarninglampRemovebolts,slackenoffandremoveadjustingDisconnectcable.Referto“Removal”,“REARDRUMBRAKE”,

Checkcontrolleverforwearorotherdamage.Replaceifnec-Checkwiresfordiscontinuityordeterioration.Replaceifnec-Checkwarninglampandswitch.ReplaceifCheckpartsateachconnectingportionand,ifdeformedordamaged,replace.AdjustclearancebetweenshoeanddrumasReleaseparkingbrakeleverandloosenadjusting

Depressbrakepedalfullyatleast10timeswithenginerun- Pullcontrollever4-5notches.ThenadjustcontrolleverturningadjustingPullcontrolleverwithspecifiedamountofforce.Checkleverstrokeandensuresmoothoperation.Numberofnotches:6- BendwarninglampswitchplatetoWarninglampcomesonwhenleverislifted“A” WarninglampgoesoutwhenleverisfullyNumberof“A”notches:1or Purpose汽车专业维修资料中

TheAnti-LockBrakeSystem(ABS)consistsofelectronicandhydrauliccomponents.Itallowsforcontrolofbrakingforcesolockingofthewheelscanbeavoided.ImprovespropertrackingperformancethroughsteeringwheelEasesobstacleavoidancethroughsteeringwheelImprovesvehicleWhenthevehiclespeedislessthan10km/h(6MPH)thissystemdoesnot

TheAnti-LockBrakeSystem(ABS)hasaself-testfunction.ThesystemturnsontheABSwarninglampfor1secondeachtimetheignitionswitchisturned“ON”.Aftertheengineisstarted,theABSwarninglampturnsoff.Thesystemperformsatestthetimethevehiclereaches6km/h(4MPH).AmechanicalnoisemaybeheardastheABSperformsthisself-test.Thisisanormalpartoftheself-testfeature.Ifamal-functionisfoundduringthischeck,theABSwarninglampwillstayon.Whiledriving,amechanicalnoisemaybeheardduringABSoperation.ThisisanormalABSHydraulicInletsolenoidOutletsolenoid

Inlet

OutletBypasscheckSystem

tab.nentsSystem

NBBR0091Thesensorunitconsistsofagear-shdsensorrotorandasen-sorelement.Theelementcontainsabarmagnetaroundwhichacoiliswound.Thefronsorsareinstalledonthefrontspindlesandtherearsensorsareinstalledontherearspindles.Asthewheelrotates,thesenseneratesasine-wavepattern.Thefre-quencyandvoltageincrease(s)astherotatingspeedincreases.CONTROLUNIT(BUILT-INABSACTUATORANDELECTRICUNIT)

Thecontrolunitcomputesthewheelrotatingspeedbythesignalcurrentfromthesensor.ThenitsaDCcurrenttotheRSactuatorsolenoidvalve.ItalsocontrolsON-OFFoperationofvalverelayandmotorrelay.Ifanyelectricalmalfunctionshouldbedetectedinthesystem,thecontrolunitcausesthewarninglampBTtolightup.Inthiscondition,theABSwillbedeactivatedbythecontrolunit,andthevehicle’sbrakesystemrevertstonormaloperation.(Forcontrolunitlayout,refertoABSACTUATORANDHAELECTRICUNIT,BR-33.)ABSACTUATORANDELECTRICTheABSactuatorandelectricunitAnelectricmotorandTwoSixsolenoidvalves,eachinletandoutletLHRHABScontrol

Thiscomponentcontrolsthehydrauliccircuitandincreases,holdsordecreaseshydraulicpressuretoallorindividualwheels.TheABSactuatorandelectricunitisservicedasanassembly.ABSActuatorNormalbrakeOFFOFFMastercylinderbrakefluidpressureisdirectlytransmittedtocaliperviatheinletsolenoidvalve.ABSPressureONOFFHydrauliccircuitisshutofftoholdthecaliperbrakefluidpressure.ONONCaliperbrakefluidissenttoreservoirviatheout-letsolenoidvalve.Thenitispusheduptothemastercylinderbypump.PressureOFFOFFMastercylinderbrakefluidpressureistransmittedtocaliper.GSENSOR(4WDMODELS

TheGsensorsensesdecelerationduringbrakingtodeterminewhet