Exmark LAZER Z DS-SERIES - Maintenance; Wheel Hub - Slotted Nut Torque Specification; Lubricate Caster Wheel Hubs; Lubricate Brake Handle Pivot

Maintenance
WheelHub-SlottedNut
TorqueSpecication
ServiceInterval:Aftertherst100hours
Every500hoursthereafter
Torquetheslottednutto211-260ft-lb(286-352
N-m).
Note:DoNotuseanti-seizeonwheelhub.
LubricateCasterWheelHubs
ServiceInterval:Asrequired
1.Stopengine,waitforallmovingpartstostop,and
removekey.Engageparkingbrake.
Figure16
1.Sealguard2.Spacernutwithwrench
ats
2.Removecasterwheelfromcasterforks.
3.Removesealguardsfromthewheelhub.
4.Removeoneofthespacernutsfromtheaxle
assemblyinthecasterwheel.Notethatthread
lockingadhesivehasbeenappliedtolockthe
spacernutstotheaxle.Removetheaxle(withthe
otherspacernutstillassembledtoit)fromthe
wheelassembly.
5.Pryoutseals,andinspectbearingsforwearor
damageandreplaceifnecessary.
6.PackthebearingswithaNGLIgrade#1
multi-purposegrease.
7.Insertonebearing,onenewsealintothewheel.
Note:Seals(ExmarkP/N103-0063)mustbe
replaced.
8.Iftheaxleassemblyhashadbothspacernuts
removed(orbrokenloose),applyathreadlocking
adhesivetoonespacernutandthreadontothe
axlewiththewrenchatsfacingoutward.Do
Notthreadspacernutallofthewayontotheend
oftheaxle.Leaveapproximately1/8inch(3mm)
fromtheoutersurfaceofthespacernuttothe
endoftheaxleinsidethenut.
9.Inserttheassemblednutandaxleintothewheel
onthesideofthewheelwiththenewsealand
bearing.
10.Withtheopenendofthewheelfacingup,ll
theareainsidethewheelaroundtheaxlefullof
NGLIgrade#1multi-purposegrease.
11.Insertthesecondbearingandnewsealintothe
wheel.
12.Applyathreadlockingadhesivetothe2ndspacer
nutandthreadontotheaxlewiththewrenchats
facingoutward.
13.Torquethenutto75-80in-lb(8-9N-m),loosen,
thenre-torqueto20-25in-lb(2-3N-m).Make
sureaxledoesnotextendbeyondeithernut.
14.Reinstallthesealguardsoverthewheelhuband
insertwheelintocasterfork.Reinstallcasterbolt
andtightennutfully.
Important:Topreventsealandbearingdamage,
checkthebearingadjustmentoften.Spinthe
castertire.Thetireshouldnotspinfreely
(morethan1or2revolutions)orhaveanyside
play.Ifthewheelspinsfreely,adjusttorqueon
spacernutuntilthereisaslightamountofdrag.
Reapplythreadlockingadhesive.
LubricateBrakeHandlePivot
ServiceInterval:Every160hours
1.Stopengine,waitforallmovingpartstostop,and
removekey.Engageparkingbrake.
2.Lubricatebronzebushingsonbrakehandlepivot
withaspraytypelubricantorlightoil.
LubricateBrakeRod
Bushings
ServiceInterval:Every160hours
1.Stopengine,waitforallmovingpartstostop,and
removekey.Engageparkingbrake.
2.Unhookseatlatchandtiltseatup.
3.Lubricatebronzebushingsoneachendofbrake
rodshaftwithaspraytypelubricantoralightoil
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