Toro 74997 - Checking the Wheel Hub Slotted Nut; Adjusting the Caster-Pivot Bearing; Using the Clutch Shim

CheckingtheWheelHub
SlottedNut
ServiceInterval:Aftertherst100hours
Every500hours
Checkandensurethatthetorqueoftheslottednutis286to
352N∙m(211to260ft-lb).
Note:Donotuseanti-seizecompoundonthewheelhub.
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Figure67
1.Slottednut
AdjustingtheCaster-Pivot
Bearing
ServiceInterval:Every500hours/Yearly(whichevercomes
rst)
1.Disengagetheblade-controlswitch(PTO),movethe
motion-controlleverstotheNEUTRAL-LOCKposition,
andsettheparkingbrake.
2.Shutofftheengine,removethekey,andwaitforall
movingpartstostopbeforeleavingtheoperating
position.
3.Removethedustcapfromcasterandtightenthe
locknut(Figure68).
4.Tightenthelocknutuntilthespringwashersareat,
andthenbackoffa1/4turntoproperlysetthepreload
onthebearings(Figure68).
Important:Makesurethatthespringwashersare
installedcorrectlyasshowninFigure68.
5.Installthedustcap(Figure68).
Figure68
1.Springwashers
3.Dustcap
2.Locknut
UsingtheClutchShim
Somelatermodelyearunitshavebeenbuiltwithclutchesthat
containabrakeshim.Whentheclutchbrakehasworntothe
pointwheretheclutchnolongerengagesconsistently,you
canremovetheshimtoextendtheclutchlife.
Figure69
1.Armature5.Brakespacer
2.Fieldshell6.Regapshim
3.Rotor7.Brakepole
4.Brake-mountingbolt
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