Peterbilt 337 2017 - Page 194

AXLE
GeneralCalibrationGuidelines
Theseinstructionsaregeneralin
nature.Formorespecicinstructions,
reviewthepusherortagsuspension
manufacturersmaintenancemanualor
contactthenearestauthorizeddealer.
NOTE
Performthisprocedureatorneara
weightscale.Procedurecanbeper-
formedwhileparkedontheweight
scaleifscaleisavailable.
1.Parkloadedvehicleonlevel
surfacewithwheelsblocked.
2.Releasevehiclesspring
brakes.(Donotreleasefor
Liftable/Non-Steerablepusheror
tagaxles).
3.Lowerthepusher/tagaxleswith
theaxleliftcontrolipvalve.(For
somenon-liftableaxles,inateair
suspension).
4.Adjusttheamountofloadon
eachaxlebyturningthepressure
regulatorclockwisetoincrease
theloadorcounterclockwise
todecreasetheload.(The
suspensionmanufacturer
maypublishpre-established
Pressure-to-LoadRatioPressure
Settingstoassistyouinachieving
anestimatedgroundload).
5.Aftersettingthepressuretoobtain
thedesiredaxleload,verifyproper
groundloadingwiththeweight
scale.
NOTE
Exceedinglocal,stateorfederal
weightlimitsmayresultincita-
tions.Contactyourlocalcommercial
weightenforcementofceforlimits
inyourarea.
Operationguidelines
NOTE
Steerable-pusherand/ortagaxle(s)
willraisewhenthetransmissionis
shiftedintoreverseorwhenthe
parkingbrakesareapplied.
4-54Y53-6060-1C1(03/17)
4