Toro 74274 - Drive System Maintenance; Checking the Wheel Hub Slotted Nut; Adjusting the Caster Pivot Bearing; Servicing the Gear Box

CheckingtheWheelHub
SlottedNut
ServiceInterval:Every500hours
Theslottednutneedstobetorquedto125ft-lb
(170N-m).
1.DisengagethePTO,movethemotioncontrollevers
totheneutrallockedpositionandsettheparking
brake.
2.Stoptheengine,removethekey,andwaitforall
movingpartstostopbeforeleavingtheoperating
position.
3.Removethecotterpin.
4.Checkthedistancefrombottomofslotinnutto
insideedgeofhole.Twothreadsorlessshouldbe
showing(Figure48).
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2
3
4
G001051
Figure48
1.SlottedNut3.Holeinthreadedshaft
2.Twothreadsorless
showing
4.Washer(ifneeded)
5.Ifmorethantwothreadsareshowingremovenut
andinstallwasherbetweenhubandnut.
6.Torquetheslottednutto125ft-lb.(170N-m)
(Figure48).
7.Tightenthenutuntilthenextsetofslotslineupwith
theholeintheshaft(Figure48).
8.Replacethecotterpin.
AdjustingtheCasterPivot
Bearing
ServiceInterval:Every500hours(oryearly,whichever
comesrst).
1.DisengagethePTO,movethemotioncontrollevers
totheneutrallockedpositionandsettheparking
brake.
2.Stoptheengine,removethekey,andwaitforall
movingpartstostopbeforeleavingtheoperating
position.
3.Removethedustcapfromcasterandtightenlock
nut(Figure49).
4.Tightenthelocknutuntilthespringwashersareat
andthenbackoffa1/4turntoproperlysetthe
pre-loadonthebearings(Figure49).
Important:Makesurespringwashersare
installedcorrectlyasshowninFigure49.
5.Installthedustcap(Figure49).
G001297
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2
3
Figure49
1.SpringWashers3.DustCap
2.LockNut
ServicingtheGearBox
CheckingtheGearBoxOilLevel
ServiceInterval:Every100hours
UseSAE75W–90SyntheticGearLube.
1.Parkthemachineonalevelsurface.
2.DisengagethePTO,movethemotioncontrollevers
totheneutrallockedpositionandsettheparking
brake.
3.Stoptheengine,removethekey,andwaitforall
movingpartstostopbeforeleavingtheoperating
position.
4.Removethesideorrearplugonthegearbox.
(Figure50).
5.Theoilshouldbeuptotheopeningofthegearbox.
6.Addoilifneededtobringittothecorrectlevel.
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