Volvo VN - Tachometer; Upper Tell-Tales; Speedometer; Front and Rear Brake System Air Pressure Gauges

64INSTRUMENTSANDCONTROLS
Tachometer
Thetachometerhastwocoloredelds:greenandred.Usethegreeneldfornormal
driving(1000to1600rpm).Usehigherenginespeedsformaximumenginebrake
performance.Neverallowtheenginetogointotheredeld(greaterthan2200rpm).
Toachievemaximumfueleconomy,usethePerformanceBonusGuidefeature.This
featurehelpsthedriverndthemostefcientoperatingrangefortheengine.See
PerformanceBonusGuideformoreinformation.
UpperT ell-T ales
TheStop,CheckandInfomessagetell-talesarelocatedintheuppertell-talesboxon
theinstrumentcluster.Theleftandrightturnsignalindicators,seatbelttell-taleand
parkingbraketell-talearealsolocatedintheuppertell-talesbox.RefertotheDriver
InformationDisplaymanualforadditionalinformationaboutthemessagetell-tales.
Speedometer
Thespeedometerisdrivenbythevehicle’selectronicsystem.
FrontandRearBrakeSystemAirPressure
Gauges
Thesystemairgaugesareconnectedtothefrontandrearcircuittanksviasensors
mountedonthepass-throughwall.Thetwogaugesshouldregisterequalairpressure.
Byobservingthegaugepointers,theoperatorcandetectapressuredropifanairleak
developsandcanreadilyidentifythecircuitaffected.
DANGER
Failuretoobservetheseprecautions
canresultinthelossofbraking
performance.Thiscanleadtoavehicle
accident,whichcanresultinpersonal
injuryordeath.