Toro Groundsmaster 1200 - Torque Specifications

TorqueSpecications
Therecommendedfastenertorquevaluesarelistedinthefollowingtables.For
criticalapplications,asdeterminedbyToro,eithertherecommendedtorqueor
atorquethatisuniquetotheapplicationisclearlyidentiedandspeciedin
thismanual.
Thesetorquespecicationsfortheinstallationandtighteningofthefastenerswill
applytoallthefastenerswhichdonothaveaspecicrequirementidentiedin
thismanual.Thefollowingfactorsmustbeconsideredwhenapplyingthetorque:
cleanlinessofthefastener,useofaliquidthreadsealant(e.g.,Loctite),degreeof
lubricationonthefastener,presenceofaprevailingtorquefeature(e.g.,Nylock
nut),hardnessofthesurfaceunderneaththeheadofthefastener,oranysimilar
conditionwhichaffectstheinstallation.
Asnotedinthefollowingtables,thetorquevaluesshouldbereducedby25%for
thelubricatedfastenerstoachievethesamestressasadryfastener.Thetorque
valuesmustbereducedwhenthefasteneristhreadedintothealuminumor
brass.Thespecictorquevalueshouldbedeterminedbasedonthealuminum
orbrassmaterialstrength,fastenersize,lengthofthreadengagement,etc.
CalculatingtheTorqueValuesWhenUsingaDrive-AdapterWrench
g205924
Figure4
TorqueConversionFactor=A/B
1.Torquewrench
3.A(effectivelengthoftorquewrench)
2.Drive-adapterwrench(crowsfoot)4.B(effectivelengthoftorquewrenchand
drive-adapterwrenchcombined)
Usingadrive-adapterwrench(e.g.,crowfootwrench)inanypositionotherthan
90°and270°totheframeofthetorquewrenchwillaffectthemeasuredtorque
valuebecauseoftheeffectivelength(lever)changes.Whenusingatorque
wrenchwithadrive-adapter,multiplythelistedtorquerecommendationbythe
calculatedtorqueconversionfactor(Figure4)todeterminepropertightening
torque.Whenusingatorquewrenchwithadrive-adapterwrench,thecalculated
torquewillbelowerthanthelistedtorquerecommendation.
Example:Themeasuredeffectivelengthofthetorquewrench(distancefrom
thecenterofthehandletothecenterofthesquaredrive)is457mm(18inches).
Themeasuredeffectivelengthofthetorquewrenchwiththedrive-adapter
wrenchinstalled(distancefromthecenterofthehandletothecenterofthe
drive-adapterwrench)is483mm(19inches).
Thecalculatedtorqueconversionfactorforthistorquewrenchwiththis
drive-adapterwrenchwouldbe18/19=0.947.
Ifthelistedtorquerecommendationforafasteneris103to127N∙m(76to94
ft-lb),thepropertorquewhenusingthistorquewrenchwithadrive-adapter
wrenchwouldbe98to121N∙m(72to89ft-lb).
Groundsmaster®1200Pull-BehindRotaryMower
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SpecicationsandMaintenance:TorqueSpecications
18235SLRevA