Exmark eXmark Lazer Z DS-Series LZDS User Manual download pdf (Page 36)

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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