QUESTIONS WITH CORRECT ANSWERS
AJHcrackedJHorJHtornJHvacuumJHdiaphragmJHinJHaJHbrakeJHpowerJHboosterJHwouldJHmo
stJHlikelyJHcause:JH-JHANS--
aJHhardJHpedalJHfeelJHrequiringJHveryJHhighJHpedalJHeffortJHtoJHstop
toJHtestJHaJHvacuumJHpowerJHbrakeJHboosterJHinJHtheJHvehicle,JHyouJHshouldJHpumpJHt
heJHbrakeJHpedalJHatJHleastJH4JHtimes,JHholdJHtheJHbrakeJHpedalJHdepressed,JHandJHst
artJHtheJHengine.JHtheJHbrakeJHpedalJHshould:JH-JHANS--
dropJHslightlyJHandJHremainJHfirm
AJHmechanicJHfindsJHgearJHlubeJHinsideJHbothJHrearJHdrumsJHonJHaJHrearJHwheelJHdrive
JHvehicle.JHWhatJHisJHmostJHlikelyJHtheJHcauseJHofJHthisJHproblem?JH-JHANS--
aJHpluggedJHaxle
TheJHrearJHbrakesJHareJHdraggingJHafterJHhavingJHnewJHliningsJHinstalledJHandJHtheJHdr
umsJHmachined.JHtheJHmostJHlikelyJHcauseJHisJHthe:JH-JHANS--
technicianJHuseJHtheJHparkingJHbrakeJHtoJHadjustJHshoesJHandJHtheJHcableJHisJHstuck
WhileJHtestJHdrivingJHaJHcar,JHtheJHmechanicJHfindsJHthatJHtheJHrightJHfrontJHbrakeJH"gra
bs".JHTheJHmostJHlikelyJHcauseJHofJHthisJHproblemJHis:JH-JHANS--
brakeJHfluidJHorJHgreaseJHonJHtheJHbrakeJHlinings
WhichJHofJHtheJHfollowingJHincorrectJHserviceJHproceduresJHwillJHcauseJHbrakeJHlock-
up?JH-JHANS--masterJHcylinderJHpushJHrodJHadjustedJHtooJHlong
WhichJHofJHtheJHfollowingJHincorrectJHserviceJHproceduresJHcouldJHcauseJHbrakeJHpeda
lJHpulsation?JH-JHANS--incorrectJHrun-outJHonJHtheJHcarJHbrakeJHlathe
AJHcommonJHcauseJHofJHpedalJHpulsationJHduringJHbrakeJHapplicationJHis:JH-JHANS--
NOTJHcausedJHbyJHimproperlyJHtorquedJHwheels,JHdamagedJHbackingJHplates,JHorJHlub
ricatedJHshims
AJHproperlyJHfunctioningJHloadJHsensingJHproportioningJHvalveJHwill:JH-JHANS--
causeJHanJHincreaseJHinJHtheJHhydraulicJHpressureJHduringJHbrakingJHatJHtheJHrearJHwh
eelJHcylindersJHwhenJHtheJHvehicleJHisJHloaded.
whichJHofJHtheJHfollowingJHisJHaJHquickJHwayJHtoJHisolatedJHaJHdefectiveJHmasterJHcylin
der?JHThereJHareJHnoJHexternalJHleaksJHinJHtheJHsystem.JH-JHANS--
pumpJHupJHtheJHbrakeJHpedal,JHthenJHholdJHitJHfirm.JHifJHtheJHpedalJHslowlyJHdropsJHtoJ
HtheJHfloor,JHtheJHmasterJHcylinderJHmayJHbeJHdefective.