WITH CORRECT ANSWERS 2025
InUaUsingleUanchorUbendixUdrumUtypeUrearUbrakeU-UCORRECTUANSWERU-
theUsecondaryUliningUisUlongerUthanUtheUprimary
ComparedUtoUtheUsecondaryUshoeUliningUareasUofUdrumUbrakes,UtheUprimaryUshoeUliningUareaUis:U-
UCORRECTUANSWERU-smallerUandUgoesUtowardUtheUfrontUofUtheUcar
DuringUaUbrakeUoverhaul,UyouUnoticeUthatUtheUbrakeUfluidUseemsUtoUbeUveryUdirtyUandUdarkUinUcolor.UWhat
UshouldUyouUdo?U-UCORRECTUANSWERU-flushUtheUsystemUbeforeUtheUnewUpartsUareUinstalled
InUorderUtoUbleedUtheUsystemUonUaUvehicleUequippedUwithUpowerUbrakes:U-UCORRECTUANSWERU-
NoneUofUtheUabove
WhichUofUtheUfollowingUcouldUbeUaUsymptomUofUover-torquedUlugUnuts?U-UCORRECTUANSWERU-
AUbrakeUpedalUpulsationUduringUbraking.
WhichUofUtheUfollowingUdescribesUtheUproperUsequenceUtoUbleedUbrakeUlinesUonUmostUrearUwheelUdriveUv
ehicles:U-UCORRECTUANSWERU-RR,ULR,URF,ULF
InUdiscUbrakeUcaliperUassemblies,UtheU"squareUcutUseal"UisUusuallyUlocated:U-UCORRECTUANSWERU-
InUtheUcaliperUpistonUbore
WhenUperformingUaUcaliperUoverhaul,UwhatUwouldUyouUuseUtoUremoveUtheUpistonsUfromUtheUcalipers?U-
UCORRECTUANSWERU-CompressedUair
SlidingUcaliperUdiscUbrakeUpadsUareUkeptUinUadjustmentUbyUtheU-UCORRECTUANSWERU-
SquareUcutUpistonUseal
AUcrackedUorUtornUvacuumUdiaphragmUinUaUpowerUboosterUwouldUlikelyUcause:U-UCORRECTUANSWERU-
HardUpedalUwithUveryUhighUeffortUrequired
, WhenUtheUbrakesUareUappliedUonUaUcarUwithUdisc-
drumUbrakes,UaUvibrationUorUpulsatingUmovementUisUfelt.UWhatUcanUcauseUthisUproblem?U-
UCORRECTUANSWERU-AUrotorUthicknessUvariation
WhileUtestUdrivingUaUcar,UtheUmechanicUfindsUthatUtheUrightUfrontUbrakeU"grabs".UTheUmostUlikelyUcauseUofU
thisUproblemUis:U-UCORRECTUANSWERU-BrakeUfluidUorUgreaseUonUtheUbrakeUlinings.
DuringUaUroadUtest,UyouUfindUthatUwhenUnormalUbreakingUpressureUisUappliedUtheUpedalUslowlyUgoesUtoUth
eUfloor.UWhatUisUtheUlikelyUcauseUofUthisUproblem?U-UCORRECTUANSWERU-
AUleakingUmasterUcylinderUprimaryUpistonUseal.
AUrattleUisUaUsingleUpistonUdiscUbrakeUassemblyUwhichUgoesUawayUwhenUtheUbrakesUareUappliedUisUmostUlik
elyUaUresultUof:U-UCORRECTUANSWERU-LooseUpadsUinUtheUcaliper
WhichUofUtheUfollowingUwouldUmostUlikelyUcauseUdraggingUbrakes?U-UCORRECTUANSWERU-
AUdefectiveUvehicleUloadUsensor
WithUtheUcarUstandingUstill,UyouUcanUhearUaUsqueakingUnoiseUwhenUapplyingUtheUbrakeUpedalUslowly.UWha
tUcouldUcauseUthisUnoise?U-UCORRECTUANSWERU-DryUbackingUplateUcontactUsurfaces.
ThereUisUaUscrapingUsoundUcomingUfromUoneUrearUbrake.UTheUsoundUstopsUwhenUtheUbrakesUareUapplied.U
WhatUisUtheUlikelyUcauseUofUtheUproblem?U-UCORRECTUANSWERU-AUbrokenUshoeUhold-downUspringUorUpin
IfUaUdrumUbrakeUself-adjusterUseizesUup,UtheUlikelyUresultUwillUbe:U-UCORRECTUANSWERU-AUlowUpedal
WhichUofUtheUfollowingUcanUbeUusedUtoUcheckUforUrotorUthicknessUvariation?U-UCORRECTUANSWERU-
DialUindicator
OnUaUvehicleUwithUaUdisc/drumUbrakeUsystem,UtheUrearUwheelsUlockUupUunderUhardUbraking.UTheUmostUlik
elyUcauseUis:U-UCORRECTUANSWERU-AUdefectiveUproportioningUvalve
AfterUputtingUaUbearingUraceUinUaUhub,UyouUnoticeUthatUtheUnewUraceUisUlooseUandUcanUspinUinUtheUhub.UW
hatUshouldUyouUdo?U-UCORRECTUANSWERU-ReplaceUtheUhub