Toro 25432, 25432E Operator's Manual

FormNo.3389-750RevA

HeavyDutyBackhoe125

RT600TractionUnit

ModelNo.25432—SerialNo.313000001andUp
ModelNo.25432E—SerialNo.313000001andUp

Registeratwww.T oro.com.
OriginalInstructions(EN)

*3389-750*A

WARNING

CALIFORNIA

Proposition65Warning

Thisproductcontainsachemicalorchemicals

knowntotheStateofCaliforniatocausecancer,

birthdefects,orreproductiveharm.

Introduction

Thisattachmentisdesignedtodiginsoiltoburycablingand
pipingforvariousapplications.Itisnotintendedtocutrock,
wood,oranyothermaterialotherthansoil.

Readthisinformationcarefullytolearnhowtooperateand
maintainyourproductproperlyandtoavoidinjuryand
productdamage.Youareresponsibleforoperatingthe
productproperlyandsafely.

YoumaycontactTorodirectlyatwww.Toro.comforproduct
andaccessoryinformation,helpndingadealer,ortoregister
yourproduct.

Thismanualidentiespotentialhazardsandhassafety
messagesidentiedbythesafetyalertsymbol(Figure2),
whichsignalsahazardthatmaycauseseriousinjuryordeath
ifyoudonotfollowtherecommendedprecautions.

Figure2

1.Safetyalertsymbol

Thismanualuses2wordstohighlightinformation.
Importantcallsattentiontospecialmechanicalinformation
andNoteemphasizesgeneralinformationworthyofspecial
attention.

Wheneveryouneedservice,genuineT oroparts,oradditional
information,contactanAuthorizedToroServiceDealer
orToroCustomerServiceandhavethemodelandserial
numbersofyourproductready.Figure1illustratesthe
locationofthemodelandserialnumbersontheproduct.
Writethenumbersinthespaceprovided.

Figure1

1.Locationofthemodelandserialnumberplate

ModelNo.

SerialNo.

©2014—TheToro®Company
8111LyndaleAvenueSouth
Bloomington,MN55420

Contactusatwww.Toro.com.

2

PrintedintheUSA

AllRightsReserved

Contents

Safety...........................................................................3

SafetyandInstructionalDecals.................................5

Setup............................................................................8

1PreparingtoInstalltheAttachmentontothe

TractionUnit......................................................9

2InstallingtheBackhoeWiringHarness.....................9

3InstallingtheMountingPlatestothe

Machine............................................................11

4InstallingtheBackhoeandtheBracketsontothe

Machine............................................................11

5InstallingtheWalkwaytotheMachine.....................13

6InstallingtheHandRailandtheSeat.......................15

7InstallingtheStabilizers........................................15

8InstallingtheStabilizerActuatorsand

Hoses................................................................16

9InstallingtheHydraulicPressureandReturn

Hoses................................................................18

10RoutingandConnectingtheWiringHarness

ontotheBackhoe................................................19

11InstallingtheE-StopSwitch.................................21

12InstallingtheControlsCoverandthe

Panels...............................................................22

13BleedingtheHydraulicSystem.............................23

14TestingtheOperator-PresenceSwitchandthe

E-StopSwitch....................................................26

15LubricatingtheStabilizers....................................27

ProductOverview.........................................................27

Controls...............................................................27

BoomControls...................................................27

DipperandBucketControls.................................28

Swing-LockPedalandBoom-LockHandle.............28

Specications........................................................29

Operation....................................................................30

UsingtheStabilizers................................................30

UsingtheBoomandSwingLocks.............................31

PreparingtoUsetheBackhoe..................................33

ControllingtheBackhoe..........................................34

DiggingwiththeBackhoe........................................35

MovingtheBackhoeandtheMachine.......................36

TransportingtheMachine........................................36

OperatingTips......................................................37

Maintenance.................................................................38

LubricatingtheBackhoe..........................................38

RaisingandLoweringtheSeat..................................39

Storage........................................................................40

Safety

DANGER

Theremaybeburiedpower,gas,and/ortelephone
linesintheworkarea.Anelectricshockoran
explosionmayoccurifyoudigintoautilityline.

Havethepropertyorworkareamarkedforburied
linesanddonotdiginmarkedareas.Contactyour
localmarkingserviceorutilitycompanytohavethe
propertymarked(forexample,intheUnitedStates,
call811forthenationwidemarkingservice).

WARNING

Whengoingupordownhill,themachinecould
overturniftheheavyendistowardthedownhill
side.Someonemaybepinnedorseriouslyinjured
bythemachineifitoverturns.

Operateupanddownslopeswiththeheavyendof
themachineuphill.Anattachedbackhoewillmake
thefrontendheavy.

WARNING

Lightningcancausesevereinjuryordeath.

Iflightningisseenorthunderisheardinthearea,
donotoperatethemachine;seekshelter.

CAUTION

Hydraulicuidescapingunderpressurecan
penetrateskinandcauseinjury.Fluidinjectedinto
theskinmustbesurgicallyremovedwithinafew
hoursbyadoctorfamiliarwiththisformofinjury;
otherwise,gangrenemayresult.

•Keepyourbodyandhandsawayfrompin-hole
leaksornozzlesthatejecthigh-pressure
hydraulicuid.

•Usecardboardorpapertondhydraulicleaks;
neveruseyourhands.

3

CAUTION

Hydraulicttings,hydrauliclines/valves,and
hydraulicuidmaybehotandcanburnyouifyou
touchthem.

•Weargloveswhenmaintaininghydraulic
components.

•Allowthetractionunitandtrenchertocool
beforetouchinghydrauliccomponents.

•Donottouchhydraulicuidspills.

4

SafetyandInstructionalDecals

Safetydecalsandinstructionsareeasilyvisibletotheoperatorandarelocatednearanyareaofpotential
danger.Replaceanydecalthatisdamagedorlost.

Figure3

1.Decal125-84744.Decal125-6694

2.Decal125-84765.Decal125-8477

3.Decal125-6690

5

125-6694

125-6690

1.Tie-downpoint

1.Wholebodycrushinghazard—keepawayfromthemachine
wheninoperation.

125-8474

1.Warning—readtheOperator’sManual.

2.Tipping/crushinghazard—readtheOperator’sManual.

3.Explosionhazard;electricshockhazard—donotdiguntilyou
havecalledlocalutilities.

4.Movethebackhoeboomtotheleft.13.Movethebackhoearmforward.

5.Lowerthebackhoeboom.14.Dumpthebucket.

6.Movethebackhoeboomtotheright.15.Movethebackhoearmrearward.

7.Raisethebackhoeboom.

8.Lowertheleftstabilizer.17.Starttheengine.

9.Raisetheleftstabilizer.

10.Lowertherightstabilizer.

11.Raisetherightstabilizer .

12.Raisethebucket.

16.Stoptheengine.

6

125-8476

1.Unlocktheboomonly
whenintheoperating
position.

2.Locktheboombefore
leavingtheoperating
position.

3.ReadtheOperator’s
Manual.

1.Lockthebackhoeboom
position.

125-8477

2.Unlockthebackhoeboom
position.

7

Setup

LooseParts

Usethechartbelowtoverifythatallpartshavebeenshipped.

ProcedureDescription

1
2

3

4

5

6

7

8

Nopartsrequired

Backhoewiringharness1
Cabletie
Leftmountingplate
Rightmountingplate1
Bolt(1-1/4x3-1/2inch)
Washer(1-1/4inch)
Bracket,walkwaysupport1
Bracket,hydraulictube1
Bolt(3/4x2inch)
Bolt(3/4x2-1/2inch)
Bolt(3/4x2-3/4inch)
Washer(3/4inch)
Locknut(3/4inch)
Walkway1
Pivotbracket1
Cable
Pin1
Greasetting
Bolt(12x40mm)
Locknut(12mm)
Bolt(3/8x1inch)
Washer(3/8inch)
Locknut(3/8inch)
Washer(13/16inch)
Handrail1
Seat
Flangebolts(8x25mm)
Flangenuts(8mm)
Bolts(5/16x7/8inch)
Lockwasher(5/16inch)
Stabilizer
Pin(1-1/2x8inch)
Snapring(1-1/4inch)
Cylinder
Pin(1-1/4x8inch)
Bushing4
Pin(1-1/4x6inch)
Washer(1-3/8inch)
Snapring(1-1/8inch)
90°hydraulictting(3/8inch)
Cabletie

Qty.

14
14

12

Use

–

2
1

4
4

8
4
2

1

1
3
3
1
2
1
1

1
2
2
4
4
2
2
4
2
2

2

8
2
4

Preparetoinstalltheattachmentonto
thetractionunit.

Installthebackhoewiringharness.

Installthemountingplatestothe
machine.

Installthebackhoeandthebrackets
ontothemachine.

Installthewalkway.

Installthehandrailandtheseat.

Installthestabilizers.

Installthestabilizeractuatorsand
hoses.

8

ProcedureDescription

9

10

Clamp
Bolt(3/8x1inch)
Washer(3/8inch)
Locknut(3/8inch)
Hose(3/4x40-1/2inch)
90°hydraulictting(3/4inch)

Nopartsrequired

Qty.

Use

2
1
2
1
2
2

–

Installthehydraulic-pressureand
hydraulic-returnhoses.

Routeandconnectthebackhoewiring
harness.

11
12
13

14

15

Important:Ensurethatthereisadequatespacetomove

thestabilizersandthebackhoearmtofullextension
andthatthemachineandtheattachmentsareclearof
obstructions.

Note:Forillustrationsoftheattachmentinstalledonthe
tractionunit,referto(page).

E-stopswitch1InstalltheE-stopswitch.

Nopartsrequired

Nopartsrequired

Nopartsrequired

Nopartsrequired

1

PreparingtoInstallthe

–

–

–

–

Installthecontrolscoverandthepanels.

Bleedthehydraulicsystem.

Testtheoperator-presenceswitchand
theE-stopswitch.

Lubricatethestabilizers.

2

InstallingtheBackhoeWiring Harness

Partsneededforthisprocedure:

1Backhoewiringharness

2

Cabletie

AttachmentontotheTraction
Unit

NoPartsRequired

Procedure

1.Parkthemachineonalevelsurface.

2.Lowertheattachment(s)totheground.

3.Turnofftheengineandremovetheignitionkey .

ConnectingtheBackhoeWiring
HarnesstotheMachine

1.Removetheleft-andright-sidepanelsandthenose
panel;refertothetractionunitOperator’sManual.

2.RotatethebatterydisconnecttotheOffposition;refer
tothetractionunitOperator’sManual.

3.Onthebackhoewiring-harness,locatethebranchof
theharnessthathasa1-pinconnector,a1-socket
connector,anda2-pinconnector(Figure4).

9

Figure6

Figure4

1.Forkedterminal(E-stop
switch)

2.Two-socketconnector
(operator-presence
switch)

3.Backhoe-wiringharness

4.Two-pinconnector
(machineharness
connection)

5.One-socketconnector
(machineharness
connection)

6.One-pinconnector
(machineharness
connection)

4.Gototheleftsideoftheenginecompartment,locate
thebranchofthemachinewiringharness(nextto
thestarter)thathasthe1-socketconnectorandthe
1-pinconnector(connectedtogether),andthe2-socket
connector(Figure5).

1.Backhoe-wiringharness

2.Two-pinconnector
(backhoeharness,E-stop)

3.Two-socketconnector
(machineharness,E-stop)

4.One-pinconnector
(machineharness,E-stop)

5.One-socketconnector
(machineharness,E-stop)

6.One-socketconnector
(backhoeharness,E-stop)

7.One-pinconnector
(backhoeharness,E-stop)

7.Connectthe1-socketconnectorofthebackhoewiring
harnesstothe1-pinconnectorofthemachinewiring
harness(Figure6).

8.Connectthe2-socketconnectorofthebackhoewiring
harnesstothe2-pinconnectorofthemachinewiring
harness(Figure6).

RoutingtheBackhoeWiringHarness
ontheMachine

1.Routethebackhoewiringharnessforward,alongthe
framerailandbelowthetopangeoftherail.

2.Routethewiringharnessovertheforwardaxleand
throughtheleftholeinthebulkheadplate(Figure7).

Figure5

1.Two-socketconnector
(operator-presence
switch)

2.Socketconnector(E-stop)4.Starter

3.Pinconnector(E-stop)

5.Separatethe1-socketconnectorandthe1-pin
connector(Figure4).

6.Connectthe1-pinconnectorofthebackhoewiring
harnesstothe1-socketconnectorofthemachine
wiringharness(Figure6).

Note:Routetheharnessinboardofthelefttilt
cylinderforthebackllblade.

10

3

InstallingtheMountingPlates totheMachine

Partsneededforthisprocedure:

1

Leftmountingplate

1Rightmountingplate

4

Bolt(1-1/4x3-1/2inch)

4

Washer(1-1/4inch)

Figure7

1.Bulkheadplate3.Engine-oildraincap

2.Backhoewiringharness

3.Routethewiringharnessupthroughthehorizontal
accessholeinthepivotplateforthebackllblade,
whichislocatedinfrontoftheradiator(Figure8).

Figure8

Procedure

Note:Theweightofeachmountingplateweightis40.4kg

(89lb).

1.Aligntheleftandrightmountingplatestotheir
respectivefrontattachmentmountingpointsonthe
frameofthemachine(Figure9).

1.Backhoewiringharness3.Hydraulicbulkheadplate

2.Accesshole

4.Routethewiringharnessforwardthroughthehydraulic
bulkheadplateandthenforward(Figure8).

5.Installthenosepanelandtheleftandrightsidepanels;
refertothetractionunitOperator’sManual.

Note:Ensurethatthebackhoewiringharnessis
locatedunderthebottomofthenosepanelandin
frontofthepanel.

6.Laythebackhoewiringharnessoverthefrontandtop
ofthenosepanel,andtemporarilysecuretheharness
ontothepanelwithapieceofadhesivetape.

Figure9

1.Rightmountingplate4.Mountingpoint

2.Bolt(1-1/4x3-1/2inch)5.Leftmountingplate

3.Washer(1-1/4inch)

2.Attacheachmountingplatetothemachinewith2bolts
(1-1/4x3-1/2inch)and2washers(1-1/4inch),and
tightenthefastenersbyhand(Figure9).

Note:Youwilltorquetheboltsthatsecurethe
mountingplatestothemachineinstep9of4Installing

theBackhoeandtheBracketsontotheMachine(page

11).

11

4

InstallingtheBackhoeandthe
BracketsontotheMachine

Partsneededforthisprocedure:

1Bracket,walkwaysupport

1Bracket,hydraulictube

8

Bolt(3/4x2inch)

4

Bolt(3/4x2-1/2inch)

2

Bolt(3/4x2-3/4inch)

14

Washer(3/4inch)

14

Locknut(3/4inch)

Procedure

WARNING

Liftingheavymachinesandattachmentsimproperly
couldresultinseriousinjuryorevendeath.

Whenliftingheavymachinesandattachments,use
liftingequipment,suchaschainsandstraps,thatis
ratedfortheweightoftheequipment.

Note:Theweightoftheattachmentis606.6kg(1,337lb).

1.Attachtheliftingequipmenttothehandlebarandthe
dipperactuatormountingpoint(Figure10).

Figure10

1.Dipper-actuatormounting
point

2.Handlebar5.Mounting-platehole

3.Pressureandreturn
hydraulictubes

2.Aligntheholesinthebackplateofthebackhoewith
themountingholesinthe2mountingplates(Figure

10).

Note:Usecarewhenaligningthehydraulic-pressure
andhydraulic-returntubesrearwardoftheright
mountingplateofthebackhoe.

3.Aligntheholesinthewalkway-supportbracketwith
holesatthebacksideoftheleftmountingplate(Figure

11).

4.Back-platemountinghole

12

Figure11

7.Installthe7horizontalbolts(3/4x2inch),the7
washers,andthe7locknutsintheremainingholesat
thebacksideoftherightandleftmountingplates,and
tightenthesefastenersbyhand(Figure13).

1.Locknut(3/4inch)

2.Mountingplate

3.Backplateofthebackhoe6.Bolt(3/4x2-3/4inch)

4.Walkway-supportbracket

5.Washer(3/4inch)

4.Insertthe2bolts(3/4x2-3/4inch)throughthe2
washers,thewalkway-supportbracket,themounting
plate,andthebackhoeframe;install2locknuts(3/4
inch)onthebolts;andtightenthelocknutsbyhand
(Figure11).

5.Aligntheholeinthehydraulic-tubebracketwithhole
atthebacksideoftherightmountingplate(Figure12).

Figure13

1.Bolt(3/4x2-1/2inch)3.Washer(3/4inch)

2.Locknut(3/4inch)4.Bolt(3/4x2inch)

8.Insertthe4verticalbolts(3/4x2-1/2inch)through
theholesinthelowerpivotplate(insidethepocketsfor
thestabilizermountingpoints),andsecurethemwith4
washersand4locknutsasshowninFigure13.

9.Torquethe4bolts(1-1/4x3-1/4inch)thatsecurethe
mountingplatestothemachineto915to1119N-m
(675to825ft-lb).

10.Torquethe10horizontalbolts(3/4inchdiameter)that
securethebackhoetothemachineto525to655N-m
(387to483ft-lb).

Figure12

1.Bolt(3/4x2inch)

2.Washer(3/4inch)

3.Hydraulic-pressuretube

4.Hydraulic-returntube

5.Mountingplate

6.Hydraulic-tubesupport
bracket

7.Backplateofthebackhoe

8.Locknut(3/4inch)

6.Insertthebolt(3/4x2inch)andwasher(3/4inch)
throughthehydraulic-tubesupportbracket,the
mountingplate,andthebackhoeframe;installa
locknutonthebolt;andtightenthelocknutbyhand
(Figure12).

11.Torquethe4verticalbolts(3/4x2-1/2inch)that
securethebackhoetothemachineto525to655N-m
(387to483ft-lb).

13

5

InstallingtheWalkwaytothe
Machine

Partsneededforthisprocedure:

1Walkway

1Pivotbracket

1

Cable

1Pin

1

Greasetting

3

Bolt(12x40mm)

3

Locknut(12mm)

1

Bolt(3/8x1inch)

2

Washer(3/8inch)

1

Locknut(3/8inch)

1

Washer(13/16inch)

InstallingtheLockingPinandCableon
theWalkway

1.Securethecabletotheoutboardholeontheforward,
verticalangeofthewalkwaywithabolt(3/8x1
inch),2washers(3/8inch),andalocknut(3/8inch)as
showninFigure14.

Note:Ensurethatthecableisverticallyalignedtothe
angeofthewalkway .

3.Slipthewasher(13/16inch)overtheendofthelocking
pinandpastthespring-loadedball(Figure14).

InstallingtheWalkwayPivotBracket

1.Threadthegreasettingintotheholeinthecylindrical
partofthepivotbracket(Figure15).

Figure15

1.Pivotbracket

2.Holeforthegreasetting5.Forwardangeofthefuel

3.Greasetting6.Flangelocknut(12mm)

4.Flange-headbolt(12x40
mm)

tank

2.Aligntheholesinthepivotbracketwiththeholesin
theforwardangeofthefueltank(Figure15).

3.Looselysecurethebrackettothefueltankwith3bolts
(12x40mm)and3locknuts(12mm)asshownin

Figure15.

InstallingtheWalkway

Figure14

1.Washer(13/16inch)5.Washer(3/8inch)

2.Lockingpin

3.Cable

4.Bolt(3/8x1inch)

6.Verticalangeofthe
walkway

7.Locknut

2.Threadthesplitringofthelockingpinthroughthe
loopinthecable(Figure14).

1.Alignthepivotpinofthewalkwaywiththeholeinthe
pivotbracketcylinder(Figure16).

Figure16

1.Walkwaysupportbracket4.Pivotpin

2.Horizontalangeofthe
walkway

3.Lockingpin

5.Pivotbracketcylinder

2.Fullyseatthepivotpinintothecylinder(Figure16).

14