Exmark eXmark Lazer Z DS-Series LZDS User Manual download pdf (Page 43)

Maintenance

CAUTION

Raisingthemowerdeckforserviceor

maintenancerelyingsolelyonmechanical

orhydraulicjackscouldbedangerous.The

mechanicalorhydraulicjacksmaynotbe

enoughsupportormaymalfunctionallowing

theunittofall,whichcouldcauseinjury.

DoNotrelysolelyonmechanicalorhydraulic

jacksforsupport.Useadequatejackstands

orequivalentsupport.

5.Removethereartiresfromthemachine.

6.Removeanydebrisfromthebrakearea.

7.Engagetheparkingbrake(leverup).

8.Loosenthejamnut(item9inFigure22)just

abovethetrunnionroller2-3turns.

Figure22

1.Leverdown

(disengaged)

6.Removepintoadjust

rodlengthforadditional

brakeadjustment

2.Leverup(engaged)

7.Trunnionroller

3.Nylocnutbelowtrunnion

roller

8.Springretainerbracket

4.Nylocnutbelowspring9.Jamnutabovetrunnion

roller

5.1/8to3/16inch(3.2to

4.8mm)

9.Tightenthebottomnylocnut(item3inFigure22)

untilthebrakespringiscompletelycompressed,

thenloosenone-halfturn.

10.Tightenthejamnutagainstthetrunnionroller

11.Checktheclearancebetweenthebottomofthe

brakebracketandthenylocnutjustunderthe

spring.Clearanceshouldmeasure1/8to3/16

inch(3.2-4.8mm).Ifnecessary,adjustthenyloc

nutaccordingly.

12.Ifthecorrectgapcannolongerbeachieved

becausethereisnoclearancebetweenthenyloc

nutbelowthespringandthejamnut,orthere

arenothreadsleftinthebottomnylocnut,the

lengthofthebrakerodcanbeadjusted.Remove

apinfromayokeateitherendofthebrakerod

andlengthen(orshorten)thebrakeroduntilthe

correctgapcanbeachieved.

13.Ifabrakecomponenthasbeenremovedor

replaced,seethestepsbelow;otherwiseproceed

tostep

14.

BurnishingtheBrakeProcedure:

A.Cleartheareaofanyammablematerial

beforestartingtheburnishingprocess.

B.Whilesittingintheoperator’sseat,startthe

engine,andreleasetheparkbrake.

WARNING

Enginemustberunninganddrivewheels

mustbeturningsoadjustmentscanbe

performed.Contactwithmovingpartsor

hotsurfacesmaycausepersonalinjury.

Keepngers,hands,andclothingclearof

rotatingcomponentsandhotsurfaces.

C.Increasethethrottletohighidle.

D.Bringbothdriveleversoutofneutraland

pushthemintofullforwardposition.

E.Pulltheparkbrakeleverupuntiltheengine

rpmstartstodrop.Holdtheparkbrakelever

inthispositionfor15seconds.

F.Releasethebrakelever.

G.Movethedriveleversintothefullreverse

position.RepeatstepsEandF.

H.Movethedriveleversbacktotheneutrallock

position.

I.Returnthethrottletolowidle,andstopthe

engine.

J.Allowthebrakebandsanddrumstocool.

Repeatsteps

7through11.

14.Installthetiresandtorquethelugnutsto90-95

ft-lb(122-129N-m).

15.Removethejackstands.

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