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1、www.88doc88.com1英文翻译原文AShortCourseonWheelAlignmentbyCharlesOfriaInitsmostbasicform,awheelalignmentconsistsofadjustingtheanglesofthewheelssothattheyareperpendiculartothegroundandparalleltoeachother.Thepurposeoftheseadjustmentsismaximumtirelifeandavehi
2、clethattracksstraightandtruewhendrivingalongastraightandlevelroad.Thisarticlebeginswithinformationthatanymotoristshouldknow;however,ifyouareinterestedinlearningmoreaboutthistopic,clickontheunderlinedwordsformoredetailedexplanationsofeachterm.Wewillco
3、vervariouslevelsofdetailwiththedeepestlevelscontaininginformationthatevenawheelalignmenttechnicianwillfindinformative.WheelAlignmentisoftenconfusedwithWheelBalancing. Thetworeallyhavenothingtodowitheachotherexceptforthefactthattheyaffectrideandhandli
4、ng. Ifawheelisoutofbalance,itwillcauseavibrationathighwayspeedsthatcanbefeltinthesteeringwheeland/ortheseat. Ifthealignmentisout,itcancauseexcessivetirewearandsteeringortrackingproblems.Ifyouknowanythingaboutwheelalignment,you'veprobablyheardtheterms
5、Camber,CasterandToe-in.CamberCamberistheangleofthewheel,measuredindegrees,whenviewedfromthefrontofthevehicle.Ifthetopofthewheelisleaningoutfromthecenterofthecar,thenthecamberispositive,ifit'sleaningin,thenthecamberisnegative.Ifthecamberisoutofadjustm
6、ent,itwillcausetirewearononesideofthetire'stread.Ifthecamberistoofarnegative,forinstance,thenthetirewillwearontheinsideofthetread.www.88doc88.comwww.88doc88.comCamberwearpatternIfthecamberisdifferentfromsidetosideitcancauseapullingproblem.Thevehiclew
7、illpulltothesidewiththemorepositivecamber.Onmanyfront-wheel-drivevehicles,camberisnotadjustable.Ifthecamberisoutonthesecars,itindicatesthatsomethingiswornorbent,possiblyfromanaccidentandmustberepairedorreplaced. Caster Whenyouturnthesteeringwheel,the
8、frontwheelsrespondbyturningonapivotattachedtothesuspensionsystem.Casteristheangleofthissteeringpivot,measuredindegrees,whenviewedfromthesideofthevehicle.Ifthetopofthepivotisleaningtowardtherearofthecar,thenthecasterispositive,ifitisleaningtowardthefr
