Volvo VN Specifications Page 292

  • Download
  • Add to my manuals
  • Print
  • Page
    / 456
  • Table of contents
  • BOOKMARKS
  • Rated. / 5. Based on customer reviews
Page view 291
OPERATION283
Onvehiclesequippedwiththestandardtwovalvesystem,theoperationofonevalve
togetherwiththeotherpermitstheoperatortoselectthedesiredfunctionsdescribed
below:
RedValve(Trailer
AirSupply)
YellowValve(System
Park)
Function(Mode)
OutOut
SystemPark
In
Out
TrailerCharge
InIn
NormalRunning
Out
In
Bobtail
ParkingBrakeRelease
VNmodelshaveenginesequippedwithengineelectroniccontrolunits(EECU).
Thesehavetwofeaturesthatmayimpactthebrakesystem.Oneistheanti-stall
deviceintheEECUwhichsensestorquedemandandautomaticallycontrolsthe
enginetocompensateandmaintainspeed.Ontractorsequippedwithparkingbrakes
ononlyoneaxle,theanti-stalldevicekeepstheenginefromstalling,allowingthe
drivertopullawaywiththebrakesdragging.Thismayresultinoverheatedbrakes
anddamagedwheelhubs.
WARNING
Continualdraggingofthebrakeswill
causebrakestooverheat.Thismaylead
towheelendre.Toavoidoverheating,
makesurebothparkingbrakeknobsare
pushedinbeforedrivingoff.
Iftheyellowknobispulledoutandtheredknobispushedin,aconditioniscreated
wherethetrailerparkingbrakesarenotappliedandonlythesingledriveaxlebrakes
areapplied.Inthiscondition,thevehiclecanbedrivenaway.Therefore,itisvery
importantthatthedrivermakesuretheyellowANDredknobsarepushedinallthe
waybeforedrivingthevehicle.
Page view 291
1 2 ... 287 288 289 290 291 292 293 294 295 296 297 ... 455 456

Comments to this Manuals

No comments