Navistar International LT Series - Rear Axles; Locking or Limited Slip Differentials; Tandem Axle Power Divider Lock (PDL) Control

Operation
Theswitchcanbetoggledbetweenthefollowingdrivemodes:
•Economy:Favorsfueleconomyoverperformance.
•Performance:Offersabalanceoffueleconomyand
performance.
•PerformancePlus()+:Reliessolelyonperformance.
•Off-Road:Reliesalmostsolelyonperformance.
Thetypeofroadconditionsandvehicleapplicationhelpsto
determinethepreferabledrivemode.
FormoreinformationonDrivesModes,seetheInternational
®
T14OperationandMaintenanceManual.
RearAxles
LockingorLimitedSlipDifferentials
WARNING
Topreventpersonalinjuryand/ordeath,or
damagetoproperty,paystrictattentiontothe
following:
Ifyourvehicleisequippedwithanytypeof
lockingorlimitedslipdifferential,powerwillbe
transmittedtotheoppositewheelshouldoneof
thewheelsslip.Bothwheelsmustberaisedfree
ofthegroundshoulditbenecessarytooperate
onewheelwiththevehiclestationary;otherwise,
thewheelthatisnotraisedwillpullthevehicle
offitssupport.
WARNING
Topreventpersonalinjuryand/ordeath,or
damagetoproperty,paystrictattentiontothe
following:
Careshouldbetakentopreventsudden
accelerationswhenbothdrivewheelsareona
slipperysurface.Thiscouldcausebothdrive
wheelstospinandallowthevehicletoslide
sideways,resultinginlossofvehiclecontrol.
TandemAxlePowerDividerLock(PDL)Control
CAUTION
Topreventpropertydamage,donotoperatethe
vehiclewiththePDLengagedondrypavement
(goodtraction)continuously.Thiswillresultin
excessivetirewearandprematureaxlewear.
NeverengagethePDLwhenthewheelsare
spinning.
ThePDLshouldbeengaged,whichpreventsinter-axle
differentialaction,whenbackingunderatrailerwithatractor,
orwhenthereispoortraction,suchaswhenstartingona
slipperysurface,operatingoffhighwayinmud,ortraveling
onslipperyhighways.Failuretolockthepowerdividerunder
theseconditionsmayresultinpowerdividerfailuresandcostly
repairs.Ifyouencounterwheelspinconditions,thePDLswitch
shouldbemovedtotheLOCKposition.
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