24SAFETYINFORMATION
OperatinginBobtailMode
CAUTION
Whenoperatingbobtail,becertainthat
gladhands,trailerairhoses,electrical
cableandconnectorsareproperly
stowedandsecure.Donotallowthem
toruborchafeonothercomponents.
Dependingoncustomerspecication,sometractorsmaybeequippedwithabobtail
airbrakeproportioningvalvewhichautomaticallyredistributesthebrakingforce
betweenfrontandrearaxleswhennothookeduptoasemitrailer(bobtailoperation).
Whenoperatinginbobtailmode,therearbrakechambersreceivereducedor
proportionalbrakeairpressure.Whenthetractoristowingatrailer,therearbrake
chamberswillreceivefull(normal)brakepressure.Fortractorswithnoproportioning
valve,theABSsystemautomaticallycontrolsbrakepressure.
DANGER
Undernocircumstancesshouldthe
publishedGVWR,FAWR,and/or
RAWRbeexceeded.Failuretoobserve
theseprecautionscanleadtothelossof
vehiclecontrol,resultinginavehicle
accidentcausingseriouspersonalinjury
ordeath.
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