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Toro Heavy Duty Backhoe 125, RT600 Traction Unit User manual

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FormNo.3389-750RevA
HeavyDutyBackhoe125
RT600TractionUnit
ModelNo.25432—SerialNo.313000001andUp
ModelNo.25432E—SerialNo.313000001andUp
Registeratwww.Toro.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.
Wheneveryouneedservice,genuineToroparts,oradditional
information,contactanAuthorizedToroServiceDealer
orToroCustomerServiceandhavethemodelandserial
numbersofyourproductready.Figure1illustratesthe
locationofthemodelandserialnumbersontheproduct.
Writethenumbersinthespaceprovided.
Figure1
1.Locationofthemodelandserialnumberplate
ModelNo.
SerialNo.
Thismanualidentiespotentialhazardsandhassafety
messagesidentiedbythesafetyalertsymbol(Figure2),
whichsignalsahazardthatmaycauseseriousinjuryordeath
ifyoudonotfollowtherecommendedprecautions.
Figure2
1.Safetyalertsymbol
Thismanualuses2wordstohighlightinformation.
Importantcallsattentiontospecialmechanicalinformation
andNoteemphasizesgeneralinformationworthyofspecial
attention.
©2014—TheToro®Company
8111LyndaleAvenueSouth
Bloomington,MN55420
2
Contactusatwww.Toro.com.
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
125-6690
1.Wholebodycrushinghazard—keepawayfromthemachine
wheninoperation.
125-6694
1.Tie-downpoint
125-8474
1.Warning—readtheOperator’sManual.
10.Lowertherightstabilizer.
2.Tipping/crushinghazard—readtheOperator’sManual.
11.Raisetherightstabilizer.
3.Explosionhazard;electricshockhazard—donotdiguntilyou
havecalledlocalutilities.
12.Raisethebucket.
4.Movethebackhoeboomtotheleft.13.Movethebackhoearmforward.
5.Lowerthebackhoeboom.14.Dumpthebucket.
6.Movethebackhoeboomtotheright.15.Movethebackhoearmrearward.
7.Raisethebackhoeboom.
16.Stoptheengine.
8.Lowertheleftstabilizer.17.Starttheengine.
9.Raisetheleftstabilizer.
6
125-8476
1.Unlocktheboomonly
whenintheoperating
position.
3.ReadtheOperator’s
Manual.
2.Locktheboombefore
leavingtheoperating
position.
125-8477
1.Lockthebackhoeboom
position.
2.Unlockthebackhoeboom
position.
7
Setup
LooseParts
Usethechartbelowtoverifythatallpartshavebeenshipped.
ProcedureDescription
Qty.
Use
1
Nopartsrequired
–
Preparetoinstalltheattachmentonto
thetractionunit.
Backhoewiringharness1
2
Cabletie
2
Installthebackhoewiringharness.
Leftmountingplate
1
Rightmountingplate1
Bolt(1-1/4x3-1/2inch)
4
3
Washer(1-1/4inch)
4
Installthemountingplatestothe
machine.
Bracket,walkwaysupport1
Bracket,hydraulictube1
Bolt(3/4x2inch)
8
Bolt(3/4x2-1/2inch)
4
Bolt(3/4x2-3/4inch)
2
Washer(3/4inch)
14
4
Locknut(3/4inch)
14
Installthebackhoeandthebrackets
ontothemachine.
Walkway1
Pivotbracket1
Cable
1
Pin1
Greasetting
1
Bolt(12x40mm)
3
Locknut(12mm)
3
Bolt(3/8x1inch)
1
Washer(3/8inch)
2
Locknut(3/8inch)
1
5
Washer(13/16inch)
1
Installthewalkway.
Handrail1
Seat
1
Flangebolts(8x25mm)
2
Flangenuts(8mm)
2
Bolts(5/16x7/8inch)
4
6
Lockwasher(5/16inch)
4
Installthehandrailandtheseat.
Stabilizer
2
Pin(1-1/2x8inch)
2
7
Snapring(1-1/4inch)
4
Installthestabilizers.
Cylinder
2
Pin(1-1/4x8inch)
2
Bushing4
Pin(1-1/4x6inch)
2
Washer(1-3/8inch)
12
Snapring(1-1/8inch)
8
90°hydraulictting(3/8inch)
2
8
Cabletie
4
Installthestabilizeractuatorsand
hoses.
8
ProcedureDescription
Qty.
Use
Clamp
2
Bolt(3/8x1inch)
1
Washer(3/8inch)
2
Locknut(3/8inch)
1
Hose(3/4x40-1/2inch)
2
9
90°hydraulictting(3/4inch)
2
Installthehydraulic-pressureand
hydraulic-returnhoses.
10
Nopartsrequired
–
Routeandconnectthebackhoewiring
harness.
11
E-stopswitch1InstalltheE-stopswitch.
12
Nopartsrequired
–
Installthecontrolscoverandthepanels.
13
Nopartsrequired
–
Bleedthehydraulicsystem.
14
Nopartsrequired
–
Testtheoperator-presenceswitchand
theE-stopswitch.
15
Nopartsrequired
–
Lubricatethestabilizers.
Important:Ensurethatthereisadequatespacetomove
thestabilizersandthebackhoearmtofullextension
andthatthemachineandtheattachmentsareclearof
obstructions.
Note:Forillustrationsoftheattachmentinstalledonthe
tractionunit,referto(page).
1
PreparingtoInstallthe
AttachmentontotheTraction
Unit
NoPartsRequired
Procedure
1.Parkthemachineonalevelsurface.
2.Lowertheattachment(s)totheground.
3.Turnofftheengineandremovetheignitionkey.
2
InstallingtheBackhoeWiring
Harness
Partsneededforthisprocedure:
1Backhoewiringharness
2
Cabletie
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
Figure4
1.Forkedterminal(E-stop
switch)
4.Two-pinconnector
(machineharness
connection)
2.Two-socketconnector
(operator-presence
switch)
5.One-socketconnector
(machineharness
connection)
3.Backhoe-wiringharness
6.One-pinconnector
(machineharness
connection)
4.Gototheleftsideoftheenginecompartment,locate
thebranchofthemachinewiringharness(nextto
thestarter)thathasthe1-socketconnectorandthe
1-pinconnector(connectedtogether),andthe2-socket
connector(Figure5).
Figure5
1.Two-socketconnector
(operator-presence
switch)
3.Pinconnector(E-stop)
2.Socketconnector(E-stop)4.Starter
5.Separatethe1-socketconnectorandthe1-pin
connector(Figure4).
6.Connectthe1-pinconnectorofthebackhoewiring
harnesstothe1-socketconnectorofthemachine
wiringharness(Figure6).
Figure6
1.Backhoe-wiringharness
5.One-socketconnector
(machineharness,E-stop)
2.Two-pinconnector
(backhoeharness,E-stop)
6.One-socketconnector
(backhoeharness,E-stop)
3.Two-socketconnector
(machineharness,E-stop)
7.One-pinconnector
(backhoeharness,E-stop)
4.One-pinconnector
(machineharness,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).
Note:Routetheharnessinboardofthelefttilt
cylinderforthebackllblade.
10
Figure7
1.Bulkheadplate3.Engine-oildraincap
2.Backhoewiringharness
3.Routethewiringharnessupthroughthehorizontal
accessholeinthepivotplateforthebackllblade,
whichislocatedinfrontoftheradiator(Figure8).
Figure8
1.Backhoewiringharness3.Hydraulicbulkheadplate
2.Accesshole
4.Routethewiringharnessforwardthroughthehydraulic
bulkheadplateandthenforward(Figure8).
5.Installthenosepanelandtheleftandrightsidepanels;
refertothetractionunitOperator’sManual.
Note:Ensurethatthebackhoewiringharnessis
locatedunderthebottomofthenosepanelandin
frontofthepanel.
6.Laythebackhoewiringharnessoverthefrontandtop
ofthenosepanel,andtemporarilysecuretheharness
ontothepanelwithapieceofadhesivetape.
3
InstallingtheMountingPlates
totheMachine
Partsneededforthisprocedure:
1
Leftmountingplate
1Rightmountingplate
4
Bolt(1-1/4x3-1/2inch)
4
Washer(1-1/4inch)
Procedure
Note:Theweightofeachmountingplateweightis40.4kg
(89lb).
1.Aligntheleftandrightmountingplatestotheir
respectivefrontattachmentmountingpointsonthe
frameofthemachine(Figure9).
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
4.Back-platemountinghole
2.Handlebar5.Mounting-platehole
3.Pressureandreturn
hydraulictubes
2.Aligntheholesinthebackplateofthebackhoewith
themountingholesinthe2mountingplates(Figure
10).
Note:Usecarewhenaligningthehydraulic-pressure
andhydraulic-returntubesrearwardoftheright
mountingplateofthebackhoe.
3.Aligntheholesinthewalkway-supportbracketwith
holesatthebacksideoftheleftmountingplate(Figure
11).
12
Figure11
1.Locknut(3/4inch)
4.Walkway-supportbracket
2.Mountingplate
5.Washer(3/4inch)
3.Backplateofthebackhoe6.Bolt(3/4x2-3/4inch)
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).
Figure12
1.Bolt(3/4x2inch)
5.Mountingplate
2.Washer(3/4inch)
6.Hydraulic-tubesupport
bracket
3.Hydraulic-pressuretube
7.Backplateofthebackhoe
4.Hydraulic-returntube
8.Locknut(3/4inch)
6.Insertthebolt(3/4x2inch)andwasher(3/4inch)
throughthehydraulic-tubesupportbracket,the
mountingplate,andthebackhoeframe;installa
locknutonthebolt;andtightenthelocknutbyhand
(Figure12).
7.Installthe7horizontalbolts(3/4x2inch),the7
washers,andthe7locknutsintheremainingholesat
thebacksideoftherightandleftmountingplates,and
tightenthesefastenersbyhand(Figure13).
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).
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.
Figure14
1.Washer(13/16inch)5.Washer(3/8inch)
2.Lockingpin
6.Verticalangeofthe
walkway
3.Cable
7.Locknut
4.Bolt(3/8x1inch)
2.Threadthesplitringofthelockingpinthroughthe
loopinthecable(Figure14).
3.Slipthewasher(13/16inch)overtheendofthelocking
pinandpastthespring-loadedball(Figure14).
InstallingtheWalkwayPivotBracket
1.Threadthegreasettingintotheholeinthecylindrical
partofthepivotbracket(Figure15).
Figure15
1.Pivotbracket
4.Flange-headbolt(12x40
mm)
2.Holeforthegreasetting5.Forwardangeofthefuel
tank
3.Greasetting6.Flangelocknut(12mm)
2.Aligntheholesinthepivotbracketwiththeholesin
theforwardangeofthefueltank(Figure15).
3.Looselysecurethebrackettothefueltankwith3bolts
(12x40mm)and3locknuts(12mm)asshownin
Figure15.
InstallingtheWalkway
1.Alignthepivotpinofthewalkwaywiththeholeinthe
pivotbracketcylinder(Figure16).
Figure16
1.Walkwaysupportbracket4.Pivotpin
2.Horizontalangeofthe
walkway
5.Pivotbracketcylinder
3.Lockingpin
2.Fullyseatthepivotpinintothecylinder(Figure16).
14
3.Applygreasetothegreasetting.
Note:Usealithium-basegrease.
Note:Cleanupanyexcessgreaseonthewalkway
pivotwitharag.
4.Rotatethewalkwayclockwiseuntiltheholeinthe
forward,horizontalangeofthewalkwayisaligned
withtheholeinthehorizontalangeofthewalkway
supportbracket(Figure16).
Note:Raiseorlowerthepivotbracketasneededto
alignthewalkwaywiththewalkwaysupportbracket.
5.Tightentheboltsandnutsthatsecurethepivotsupport
brackettothefuel-tankange(Figure16).
6.Securethewalkwaytothewalkwaysupportbracket
withthelockingpin(Figure16).
6
InstallingtheHandRailand
theSeat
Partsneededforthisprocedure:
1Handrail
1
Seat
2
Flangebolts(8x25mm)
2
Flangenuts(8mm)
4
Bolts(5/16x7/8inch)
4
Lockwasher(5/16inch)
Procedure
1.Aligntheholesinthebracketforthehandrailwiththe
holesintheseatpost(Figure17).
Figure17
1.Seatpost5.Bolt—5/16x7/8inch(4)
2.Flangenut(8mm)6.Lockwasher(5/16inch)
3.Handrail
7.Seatsupport
4.Flangebolt(8x25mm)8.Seat
2.Securethehandrailtothebracketoftheseatpostwith
2angebolts(8x25mm)and2angenuts(Figure17).
3.Aligntheholesofthebottomoftheseatwiththeholes
inthebracketontheseatarm(Figure17).
4.Applymedium-grade(serviceremovable)
thread-lockingcompoundtothe4bolts(5/16x7/8
inch)fromlooseparts.
5.Securetheseattothesupportoftheseatpostwith4
bolts(5/16x7/8inch)and4lockwashers;referto
Figure17.
15
7
InstallingtheStabilizers
Partsneededforthisprocedure:
2
Stabilizer
2
Pin(1-1/2x8inch)
4
Snapring(1-1/4inch)
Procedure
1.Lubricatetheinsidediameterofthe1-1/4-inchand
1-1/2-inchbushingsofthestabilizerswithgreaseatthe
frontandbackplatesofthebackhoe(Figure18).
Figure18
2.Lubricatetheinsidediameterofthe1-1/4-inchand
1-1/2-inchpivotpointwithgreaseatthefrontand
backsideplatesofthestabilizers(Figure18).
3.Lubricatetheinsidediameterofthe1-1/4-inchholes
withgreaseatbothendsofthehydraulicactuators
(Figure18).
4.Alignthepivotpointatthefrontandbacksideplates
ofoneofthestabilizerstothelowerbushingsinthe
backhoeframe(Figure19).
Figure19
1.Snapring(1-1/4inch)
3.Lowerbushings
2.Pin(1-1/2x8inch)4.Stabilizer
5.Insertapin(1-1/2x8inch)throughtheholesinthe
backhoeframeandthestabilizer(Figure19).
6.Securethepinwith2snaprings(1-1/4inch)asshown
inFigure19.
7.Repeatsteps4through6toinstalltheotherstabilizer
totheothersideofthebackhoeframe.
16
8
InstallingtheStabilizer
ActuatorsandHoses
Partsneededforthisprocedure:
2
Cylinder
2
Pin(1-1/4x8inch)
4Bushing
2
Pin(1-1/4x6inch)
12
Washer(1-3/8inch)
8
Snapring(1-1/8inch)
2
90°hydraulictting(3/8inch)
4
Cabletie
InstallingtheHydraulicActuators
Note:Theweightofeachcylinderis31.6kg(69.6lb).
1.Attachthehydraulicactuatortothebackhoeasfollows:
A.Ensurethatthestabilizerisrestingonthefoot
pad.
B.Insertapin(1-1/4x8inch)throughtheupper
bushingintheforwardplateofthebackhoeframe
(Figure20).
Note:Allowthepintoextendabout25mm(1
inch)beyondthebushing.
Figure20
1.Snapring(1-1/8inch)
5.Plug
2.Pin(1-1/4x8inch)partially
insertedintotheforward
plate
6.Pin(1-1/4x6inch)
3.Bushing
7.Pistontting
4.Cylindertting8.Washer(1-3/8inch)
C.Slipabushing(fromthekit)overtheshort
segmentofthepin(Figure20).
D.Alignthemountingholesofthecylindertting
(nearthehydraulicport)ofthehydraulicactuator
tothepin(1-1/4x8inch),andmovethepin
throughthemountingholes(Figure20).
Note:Ensurethatthehydraulicportsofthe
cylinderarepositionedupward.
E.Continueinsertingthepinthroughthecylinder
tting(Figure20).
Note:Theactuatorshouldbepartiallysupported
bythepin.
F.Alignabushing(fromthekit)betweentherear
mountingholeofthecylinderttingandthe
bushinginthebackplatesofthebackhoe(Figure
20).
G.Continueinsertingthepinthroughthebushing
andthebushinginthebackplatesofthebackhoe
(Figure20).
2.Attachthehydraulicactuatortothestabilizerasfollows:
A.Insertapin(1-1/4x6inch)throughthepivot
pointofthestabilizer(Figure20).
17
Note:Allowthepintoextendslightlythrough
thepivotpoint.
B.Slipa3washers(1-3/8inch)overtheshort
segmentofthepin(Figure20).
C.Removetheplugsfromtheportsofthecylinder
andcovertheholeswithacleanrag(Figure20).
D.Extendthepistonttingofthecylindertothe32
mm(1-1/4inch)pivotpointofthestabilizer.
Note:Residualhydraulicuidmayejectfrom
thecylinderports.
E.Continueinsertingthepinthroughthepiston
ttingofthecylinder(Figure20).
F.Align3washers(1-3/8inch)betweenthepiston
ttingofthecylinderandtheotherpivotpointof
thestabilizer(Figure20).
G.Continueinsertingthepinthroughthewashers
andthepivotpointofthestabilizer(Figure20).
3.Securethe2pin(1-1/4x8inch)with4snaprings
(1-1/8inch)asshowninFigure20.
4.Repeatsteps1through3forthehydrauliccylinderfor
theotherstabilizer.
AttachingtheHosestotheHydraulic
Actuators
1.Installthe2hydraulicttings(3/8inch,90°)intothe
hydraulicportsoftheactuator(Figure21).
Note:Ensurethatthettingspointtowardeachother
(Figure21).
Figure21
1.90°hydraulicttings
2.Removethehosesfrominsidethepocketsforthe
stabilizermountingpoint(Figure22).
Figure22
1.Extendhose3.Retracthose
2.Cableties
3.Routetheextendandretracthosestothettingsthat
youinstalledinstep1.
4.Connecttheextendhosetothettingintheextend
port,andconnecttheretracthosetothettinginthe
retractport(Figure23).
Figure23
1.Extendhose2.Retracthose
5.Securethehydraulichosestothecylinderofthe
actuatorwithcabletiesasshowninFigure22and
Figure23.
6.Repeatsteps1through5fortheothersideofthe
backhoe.
18
9
InstallingtheHydraulic
PressureandReturnHoses
Partsneededforthisprocedure:
2
Clamp
1
Bolt(3/8x1inch)
2
Washer(3/8inch)
1
Locknut(3/8inch)
2
Hose(3/4x40-1/2inch)
2
90°hydraulictting(3/4inch)
Procedure
1.Placeadrainpanunderthehydraulic-shunttting
thatconnectsthebulkheadttingsforthehydraulic
pressureandreturncircuitsofthemachine(Figure24).
Figure24
1.Bulkheadtting
4.Hosesupport
2.90°hydraulictting(3/4
inch)
5.Hydraulic-pressuretube
3.Shunttting
6.Hydraulic-returntube
2.Removetheshuntttingandlooselyinstallthe2
hydraulicttings(3/4inch,90°)ontothebulkhead
ttings(Figure24).
Note:Retaintheshuntttingsothatyoucaninstallit
whenyouremovethebackhoe.
3.Routethe2hydraulichosesthroughthehosesupport
ontherightbackhoemountingplateasshownin
Figure25.
Figure25
1.Hydraulic-pressurehose
6.Locknut(3/8inch)
2.Hydraulic-returnhose7.Hydraulic-returntube
3.Hydraulic-tubebracket
8.Washers(3/8inch)
4.Clamps9.Bolt(3/8x1inch)
5.Hydraulic-pressuretube
4.Connectandtightenthe2hosestothehydraulic
pressureandsupplytubesthatalignverticallyrearward
oftheright-mountingplateforthebackhoe(Figure25).
5.Assemblethe2tubeclampstothehydraulicpressure
andsupplytubes,andsecurethemtothetubebracket
withabolt(3/8x1inch)andlocknut(3/8inch)as
showninFigure25.
6.Connectandtightenthefreeendsofthehosestothe
90°hydraulicttingthatyouinstalledinstep2.
7.Alignandtightenthe2elbowttingsatthebulkhead
ttings.
8.Tightenthettingsofthehosesatthepressuretube,
thereturntube,andthe2elbowttings.
19
10
RoutingandConnectingthe
WiringHarnessontothe
Backhoe
NoPartsRequired
Procedure
1.Removethe4boltsand4washersthatsecurethe
controlscovertotheoperatorpedestalofthebackhoe,
andremovethecover(Figure26).
Figure26
1.Operatorpedestal
3.Washer
2.Controlscover
4.Bolt
2.Routethebackhoeharnessupwardandalongthe
2leftmosthydraulichosesatthebackplateofthe
backhoe(Figure27).
Figure27
1.Backhoewiringharness
5.Console-supportplate
(left)
2.Forward
6.Console-supportplate
(right)
3.Two-socketconnector7.Hydraulichoses
4.Seat-posttube
8.Hydraulic-bulkheadplate
3.Routetheharnessupwardandbetweentheleftand
rightconsole-supportplatesoftheoperatorpedestal
(Figure27).
4.Routethebranchoftheharnesswitha2-socket
connectorthroughthetubeoftheseatpost(Figure27).
5.Connectthe2-socketconnectorofthebackhoewiring
harnesstothe2-pinconnectoroftheoperatorpresence
switch(Figure28).
Note:Ensurethatthereisenoughslackinthebranch
oftheharnessfortheoperator-presenceswitchatthe
forwardendoftheseatpost.
Figure28
1.Operator-presenceswitch
2.Two-pinconnector,
backhoewiringharness
20
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