Peterbilt 348 2017 - Rear Suspension Fasteners

REARAXLEANDSUSPENSION
RearSuspensionFasteners
Tomaintaintheperformanceofthe
airsuspension,checkfastenertorque
valuesaftertherst2,000miles(3,218
km)ofserviceandevery60,000miles
(96,000km)thereafter.
Torquerecommendationsapplyto
fastenerssuppliedandinstalledby
vehiclemanufacture.Thevalueslisted
inthetablesbelow,areforcadmium
platedorphosphateandoilfasteners
only.
U-boltsaredifculttotightenunless
youhavetherightequipment.Ifyou
cannottightenthemcorrectlyyourself,
besuretohavethemcheckedand
tightenedregularlybyanauthorized
mechanic.
U-BoltTorque
NOTE
Toensureanaccuratetorqueread-
ing,useproperlymaintainedand
calibratedtorquewrenches.Clean
thenutandbolt.Nodirt,grit,orrust
shouldbepresent.
WARNING!
Donotoperatethevehicleifthe
U-boltsarenotproperlytightened.
LooseU-boltswillcausetheaxle
tonotbeproperlysecuredtothe
suspension,whichcouldcauseloss
ofvehiclecontrolandanaccident.
LooseU-boltscanalsocauseun-
eventirewearandpooralignment.
Failuretocomplymayresultin
death,personalinjury,equipmentor
propertydamage.
NOTE
Wheneverpossible,torqueallfas-
tenersonthenutend,notthebolt
head.
RearSuspensionFasteners(Metric&
Standard)
TORQUE*SIZE/
TYPE
NmLb-Ft
M16nylon-
insertnuts
163-217120-160
M20nylon-
insertnuts
352-460260-340
M20all-
metallock
nuts
427-475315-350
1/2in.nut
109-12280-90
3/4in.nut
394-462290-340
1-1/4in.
nut
1,877-
2,217
1,380-
1,630
*T orquerequirementsapplyto
manufacturerproprietarysuspensions.All
othersuspensionsmustreferandadhere
tooriginalmanufacturersshopmanual.
5-134Y53-6060-1C1(03/17)
5