operators_manual

WARNINGSYMBOLS
5.Brake,ParkBrake
Illuminatesinthestatusindicatorwhen
parkingbrakesareapplied.
6.Brake,ServiceBrake
Indicatesthatafaultexistsinthebrake
system.Thisshouldbecheckedbyan
authorizeddealerassoonaspossible.
7.Brakes,TrailerAnti-Lock
BrakeSystem(ABS)
IlluminatesduringtheInstrumentation
SystemSelf-Testandthetractor/truck
isconnectedwithaABSequipped
trailer.
Illuminatesduringnormaloperating
conditionstoindicateaproblemwith
theTrailerABSSystem.Thisshould
becheckedbyanauthorizeddealeras
soonaspossible.SeeOperatingthe
BrakeSystemonpage4-21formore
information.
NOTE
Tractors/Trucksandtrailersbuiltaf-
ter3/1/01mustbeabletoturnonan
In-CabTrailerABSWarningLamp
(perU.S.FMVSS121).Theindus-
trychosePowerLineCommunica-
tion(PLC)asthestandardmethodto
turniton.SeeOperatingtheBrake
Systemonpage4-21formorein-
formation.Ontrailersbuiltpriorto
3/1/01verifytrailerABSsystemsta-
tusviatherequiredexternalwarning
lampmountedonthetrailer.Thein-
dicatorlamponthetrailershouldbe
yellowandidentiedwiththeletters
“ABS”.
8.Differential,InterAxleDiff
Lock
Illuminateswhentheinter-axle
differentialswitchisONthuslocking
theinter-axledifferential.Thispowers
theforwardrearandtherearrear
differentialsequally.Whentheswitch
isturnedoff(inter-axledifferential
unlocked)theenginepowerisallowed
toowtoanyofthe4drivetiresbased
onthedifferentialeffect(mostlytothe
forwardreardifferential).Thisfeature
isstandardonalltandemaxles.
9.DumpTruck,BodyUp
IlluminateswhenTruckDumpBodyis
up.
10.DumpTruck,Gate
IlluminateswhenTruckDumpgateis
open.
3-24Y53-6076-1B1(03/17)
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