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Peterbilt 348 2017 - Visual Inspection

Peterbilt 348 2017
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REARAXLEANDSUSPENSION
NOTE
Failuretofollowtheserecommenda-
tionscouldvoidwarranty.
VisualInspection
Forallvehicles,mandatory
maintenanceproceduresinclude
retighteningofU-boltsandcomplete
inspection.However,evenwithproper
maintenance,manyfactorsaffectthe
servicelifeofspringsandsuspension
components,suchas:fatigue,vehicle
grossweight,typeofload,road
conditionsandvehiclespeed.
ItisimportantthatU-boltsremaintight.
Severeuseofyourvehiclecancause
themtoloosenfaster.Butallvehicles
needtohavetheirU-boltscheckedand
tightenedregularly.Besuresomeone
withthepropertrainingandtheright
toolschecksandtightenstheU-bolts
onyourvehicle.
Aftertherst500miles(800km)of
operation,inspectthesuspension
periodically,asnotedbelow:
Visuallycheckforlooseormissing
fasteners,cracksinhangeroraxle
connectionbrackets.
Checkthatspringsarecenteredin
hangersandingoodcondition.
Checkforcracks,wearmarks,
splits,orotherdefectsonthe
surfaceofthespring.
Replacedefectiveparts.Because
repairedspringscannotbe
fullyrestoredtotheiroriginal
servicelife,replacethecomplete
assemblyifcracksorotherdefects
aredetected.
Afterreplacementofanypartor
discoveryofloosecomponents,
checkthetorqueofallfasteners.
Newspringssettle-inafterthe
vehicle'sinitialservice,causing
theU-boltstobecomeloose.
(03/17)Y53-6060-1C15-133
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