Peterbilt 337 2017 - Introduction

FRAME
FRAME
Introduction
WARNING!
Donotcut,spliceorweldframe
railsordrillthroughthetoporbot-
tomangesoftherails.These
operationscouldaffectframerail
strengthleadingtoafailureresulting
inanaccident.Railfailuresre-
sultingfromsuchmodicationsare
notwarrantable.Failuretocomply
mayresultindeath,personalinjury,
equipmentorpropertydamage.
EmergencyWelding
WARNING!
FrameweldingisNOTrecom-
mended.Thehighheatofwelding
nulliesthespecialheattreatment
oftherails,greatlyreducingtheten-
silestrengthoftheframerail.Ifa
framememberbecomescracked
fromoverloading,fatigue,surface
damageoracollision,theonly
permanentrepairistoreplacethe
damagedframememberwithanew
part.
Inanemergency,atemporaryrepair
maybeperformed.Observethe
followingprecautionstoprotect
electronicsystemsduringwelding
operations.Emergencywelding
proceduresarefurtherexplainedinthe
maintenancemanuals.Pleasereferto
theorderinginformationontheback
covertoobtainamaintenancemanual.
WeldingPrecautions
Intheeventofemergencyweldingofa
framerailandwhenweldinganyother
partofyourtruckoranycomponent
attachedtoyourtruck,observethe
followingprecautionsbeforewelding:
•Disconnectallelectronicdevices.
Itisnotpossibletolistallofthe
electronicsthatcouldbeaffected,
butafewexamplesincludethe
following:alternator,engine
ElectronicControlUnit(ECU),
transmissionECU,ABSECU,
navigationdevices,diagnostic
devices,andmonitoringdevices.
•Disconnectbatterycablesand
insulatethemfromthevehicle.
•DonotusetheECUorengine
groundstudforthegroundofthe
weldingprobe.
•Ensurethatthegroundconnection
forthewelderisasclosetothe
5-110Y53-6060-1C1(03/17)
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