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MAXFORCE BREAKER User Manual ◄ 11

OPERATION

PREPARATION FOR USE

Readthesectionin thismanualtitledPREPARATION

FORUSEbeforeoperatingabreaker.Failuretofollow

thepreparationinstructionscanresultinseveredamage

tothebreakerandexcavatorandvoidthewarrantiesof

both.

POSITIONING THE EXCAVATOR

Figure4.PositiontheExcavator

With the breaker tool in place on the material to be

worked,positiontheexcavatorsothe dipperisat ap-

proximately45°andthebreakerisalmostvertical.The

tracksoftheexcavatorshouldbeinlinewithboomsand

thebreaker.

POSITIONING THE BREAKER TOOL ON

THE WORK MATERIAL

Positionthetoolbitneartheedgeoftheworkmaterial,

notinthecenterorfarfromtheedge.Positionthetool

6-18inches(dependingonthematerial)fromtheedge.

Breakingoffsmallerpiecesofrockorconcreteusually

accomplishesmorethantryingtobreaklargerpieces.

Breakneartheedge

Figure5.PositiontheBreaker

On at material or rock,thebreakershouldbevertical

or“curled”backslightlytodirecttheimpactforcedown-

ward and toward the backhoe. This directs the force

backtowardtheedge oftheworkmaterial.Ifthetool

ispositionedinthecenterofthework,ortoofarfrom

theedge,theenergywillbeabsorbedintothematerial

withoutcrackingit.Donotrunthebreakerlongerthan

15-20 seconds. Ifbreakout doesnot occurwithin this

time,movethebreakertoanotherposition.

Onatmaterialsuchasconcreterunways,startingto

breakinthemiddleofthematerialmaycausevibrations

tobetransmittedthroughoutthebreakerandexcavator

becausethematerialhasnoplacetobreakto.Always

tryto start atapoint which willpermitthematerial to

breakout.

MAINTAIN DOWN PRESSURE

Maintaininghardcontactwiththesurfaceofthematerial

tobebrokeninadditiontomaintainingadequate"down

force"isveryimportant.Alwayskeep"downpressure"

or"downforce"onthepointofthebreakerbyliftingthe

wheels,tracks,orstabilizersslightlyabovetheground.

This method takesthe "slack" out ofthe bracket and

boompivots,and reducestheimpactonthe pivots in

theboom.

Applydownpressure

Figure 6. Maintain Down Pressure

Theoperatorneedstobeconstantlyawareoftheamount

ofdownpressurebeingappliedandbeabletoadjustit

ifnecessary.Notenoughdownpressureresultsinlow

productionandaccelerateswearandtearontheequip-

ment.Toomuchdownpressuremaycausethebreaker

housingtoviolentlycrashintothebrokenmaterialwhen

"break-through"occurs.

Inanybreakingjob,theoperatorshouldmakeeveryef-

fortto“follow”thebreakerwith“down-pressure”asthe

machinebreaks fartherinto the material.Thebreaker

shouldbestoppedassoonas“break-thru”occursorifit

isapparentthatgoodsolidblowsarenotoccurring.