Case J-72 User manual

JI Case ^NNK^
ATennecoCompany
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^ThisSafety Alert SymbolIndicates Important
SafetyMessagesInThis Manual When You
^A^kSeeThisSymbolCarefullyReadTheMessage
^^^^ThatFollowsandBe Alert ToThePossibility
^^^^^^OfPersonal Injury Or Death
IF THIS MACHINEIS USED BYAN EMPLOYEE ORIS
LOANEDOR RENTED, MAKEABSOLUTELYCERTAIN
THATTHE OPERATOR(S), PRIOR TO OPERATING:
1.IS INSTRUCTED IN SAFE AND PROPER USE.
2. REVIEWS AND UNDERSTANDS THEMANUAL(S)
PERTAINING TOTHEMACHINE.
751253
^WARNING
BEFORE STARTINGENGINE
STUDYOPERATOR'S MANUAL SAFETY MESSAGES
READ ALL SAFETY SIGNSON MACHINE
CLEAR THEAREAOFOTHERPERSONS
LEARN & PRACTICE SAFE USEOF
CONTROLS BEFORE OPERATING
ITISYOURRESPONSIBILITYTOUNULRSTANDANDFOLLOWMANUFACTURER'SINSTRUCTIONS
ON MACHINE OPLRATION, SERVICE, ANDTO OBSERVE PERTINENTLAWSANDREGULATIONS.
OCERATOH AND SERVICE MANUALSMAYBEOBTAINEDFROMYOUREQUIPMENTDEALER.
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SAFETYMESSAGES
Thesafetymessagescontainedinthismanualaretobeusedtogetherwiththesafetymes-
sagesappearinginthetractoroperator'smanual.Besuretoreview[]Gthcarefullyt)Rfore
^^^^^^ operatingthetrac:tot-tillercombination
A
CAUTIOW: Loosefittingclothing
maycatchinmovingpaits.Wear
propelfitting,substantialclothing
wheno[3eiatingyouiliactot-tiller
conibination.
CAUTIOW: Besuiethetillerclutch
IS disengaged(levei"lockedliehind
stop)hefoiestartingtractorengine
A WARMING:Hu:loUiiytillethas
higl-ispeeiilotatinyimc,Kt?ef)all
paitsofthebodybelTinrithesliields
l>tovidedto|)icvenl[:ontactwith
thesetinesand[jeisonalinjuiy
A
CAUTION: Diseng.igethetillei
clutch, stopengmi;,placetrans-
missioninnetitial,'jijlparkingl}iake
andwaitforallmotiontostoj]
befoip leavingtheii;n;iorseatto
cleantillei:inesoffoijnyothei
reason.
A
CAUTION; Wheninstallingtiller
Ok rep'lacmgdrive bell, i"Lin inthe
beltandcheckfotpiopeideclutch-
mgbeforeuseAdjustprimary
dtwehellkeei^etifnecessaiy.
Bt'su'eioecu!''b'* ti^TiO' Vv':th
[e.ii whee' fij'itj ,i'uif•O'llenri
••.veig'"iI', befoie oneMimg vouitun:
loiWith! 'Ifiatljrh;'ii
CAUTION: Disengagethetiller
clutchwhenevetthetilleiislifted
intothetransportposiiion.
A
CAUTION: 0[)RI aletractorand
tilleifiompropelseatposition
only.Anyothetmethodcould
I esiiltina seriousinjury, A
CAUTION: Usecaiewhenhooking
theassistspring,SecLitespiingto
assistspnnganchoiwithflatwasheis
ant!eoitiT i.>ir, b.eion;lijr.s'.oning,
Pteventspringfromslidingoffstud
onliftleverwh(.'ntensioning.In-
stallnut,bolt,sleeveandwashers
immediatelyaftertensioning.
A
CAUTION: Whenoperaiirigonan
incline,alwaysbackuft anddrive
down. Alwaysuseextremecatein
roughotuneventeiiainandin-
clines. Besuietoerjuif)yourtractor
witha minimumof115[louids
(52Kg)offiontcounteiweightand
57' • pounds(26K()lofweightto
eaciireaiwheelwil'ntilli.'iattached
toobtainlegLiiietioufiallstability.
A WARNING:Useextremecaution
whenloadingunitontrailer.Al-
waysliackLPtheramportrailer
wh-nloading,dtivRdownwhenun-
loading. Whenunitisontrailer,
settheparkingInakeandlowerthe
titletsoitisrestingonthetrailer
floor.Blockwheelssecurelyand
attachtransportchains.
IMPORTANT; Always installnew decals wheneverthe
old decals aredestroyed, lost, painted
over orillegible.Whenindividualparts
arereplaced that have decals attached,
be sure toinstalla new decal with the
newpart.Replacement decals are avail-
able from your Case dealer.
3
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INTRODUCTION
Read thismanualcarefullybeforeoperatingyourJ-72
tiller.YourJ I Case CompactTractorDealeriswell
qualifiedtoansweranyfurtherquestionsyoumighthave
concerning yourequipment. Also, iftheneedshould
arise, his service department with factorytrainedtechni-
cians, genuine Case replacementpartsandtherequired
facilities isina positiontoprovideproperrepairsinthe
shortest time possible. Thedefinitions"Right,Left,
Front andRear"as used throughoutthismanualrelateto
thetractorandtillerwhentheoperatorisseatedfacing
forwardinthenormaloperatingposition.
TILLING, GENERAL
The J-72mechanicaldriverotarytillerisanunusually
versatile attachment.Completefamiliarity with its
capabilities andoperatingcharacteristicswillenableyou
to secure maximumbenefitsforyourgarden. This rotary
tillerhasbeenthoroughlyfield-testedundera wideva-
rietyofoperatingconditions,andthefinalcombination
oftinegeometry,tine spacing, shaftspeedandcontrol
system hasbeenproventobethemostsuitableforvar-
iedfieldconditions.Youwillfindthisattachmenthigh-
lydurableandproductiveinyourgardeningactivities.
A tillerissimplya mechanismforchangingthecondition
of soil. Thefamiliarmoldboardplowperformsa tilling
function, butwheretheplowturnsthe soil inlongfolds
or furrowstherotarytillerturnsthe soil inchunksor
smalt particles....andtherein lies the secret ofthetillers'
versatility. A rotarytillercanbe used toperformanyof
thefollowingfunctions:
1. Change soil physicalconditions, such asinplowing,
cultivatingandaerating.
2. Controlweedsbychoppingandchurningtheminto
the soil.
3.Preparing seed bedsbytillingthe soil toa finetex-
ture.
4.Mixchemicalsororganicmatter such asfertilizer,
manure, herbicidesand insecticides intothe soil.
5.Managecropresiduebyturningitunderto form
mulch.
6. Modify soil topography such asinlandscaping.
7.Cultivateorlevelgroundaroundtrees,hedges,orin
orchards.
8.Blendvarious soils and soil modifiersforlandscaping
and greenhousework.
AERATION
For aerationpurposesthetillershouldsimplydisturb
the soil surfacewithoutcompletelyturningitover....in
much thesamemannerasinsertinga spadeeachfew
inches andlooseningthe soil inclumps.Thesurfaceof
the soil shouldbe left veryrough, with occasional holes
and deepfracturestoseveral inches. This permitsready
penetrationofairandmoisture with minimumdangerof
erosion orcrusting.Previouslytilledgardenareascanbe
aeratedbyoperatingthetilleratcomparativelyrapid
travelspeeds....whereinthetilleralmost"walks" with
thetractor....tinesshouldenterandexitthe soil with
minimumtearingandchurning.
SEEDBED PREPARATION
Tillingforseedbedpreparationrequiresa morethorough
workingofthe soil structuretobreakitupintosmall
enough particlestoprovideintimatecontactbetween
soil and seed. Theidealstructureprovidesa relatively
finegrained soil structuredownto seed depth, with pro-
gressively coarser grainedstructuredowntothe full till-
ingdepth.Theinterfacebetweentilledanduntilled
strata shouldberoughtopermitpercolationofwater....
a smooth,interface,likehardpan,tendstoserveasa
barriertodeepwaterandrootpenetration.
Whenpreparingseedbedsitisgenerally necessary touse
successive passes overthesameareatoachievedesired
depthandtexture....each successive pass providesa finer
texturetotheupperlayerswhiteaddingtodepthof
penetration.Allowthetillerto"work"itswayintothe
soil bykeepingthetractortravelspeedslowbutsteady,
and offsetyourtillingpatha few inches over from the
previous pathso that tineswill till outthe trail left by
thechain case.
4
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CULTIVATION ANDWEEDCONTROL
Set thetillerfora shallowdepthofonetotwoinches
forcultivatingandweedcontrolactivities.Avoidover-
pulverizationofthesoil since thistendsto"crust"with
rainor"dust"awaywithwind.
The removabledragshieldinitsnormalposition serves
as anadditionalbounceshieldforbreakingupthesoilto
a finer,uniformtexture.Thetrailingserrationsevenout
thetilledsoiltoleavea smoothsurface,readyforlawn
seeding orgardenplanting.Theshieldiseasilyremov-
ablefortillinginpaddies,forroughtillingoraeratingas
youprefer.
ORCHARD CULTIVATION
Fill groundshouldbetilledjustpriortotheapplication
oftopsoiltoaidinforminganinterlacedstructurebe-
tweentopsoiland fill soil....toaidinwaterandroot
penetration.
MIXING,BLENDING
Fertilizers, chemicals,manure,humus,oldsawdust,com-
post orothergrowthproducingsoiladditivescanbe
effectivelymixedintothesoilbydispersingthismater-
ialoverthegroundjustpriortotilling.Iftheareatobe
tilledistoughthenbroadcasttheadditivesbetween suc-
cessive tiller passes toobtainmosteffectiveblending.
Special purposesoilblendsforpotting,hothouse,green-
house, orotherapplicationscanbequicklyandeasily
developedwiththistiller.Similarly,soilstructuremod-
ifiers such as sand, gravel,sawdustandwoodchipscan
betilledintothesoiltoforma desiredsoil base.
Periodic cultivationbetweenhedgerowsortreerowswill
providea continuousroughsurfaceforgreatestabsorp-
tionofwater. SUMMARY
The offsetmountingfeatureisparticularlyvaluablefor
tillingunderoverhangingbrancheswithout"barking"
thetreeswiththetractor.
Several passes withthetillerundernuttrees,justprior
toharvesting,willprovidea smoothandcleansurface
for easiest harvesting....thenutscanbeeasilysweptor
rakedupwithouthavingtodragthroughweedsor grass.
LANDSCAPING
Using therotarytillerforlandscapingpurposesinvolves
tillingthesoiltoa veryfinetexturetoallowlevelingor
removaltoanotherarea.Several passes areusuallyre-
quiredforthisoperation,particularlyiftheoldlawnor
fieldiswellcompactedandthreadedwitha denseroot
structure.
The CASE J-72tilleristrulya remarkabletoolwith
versatilitylimitedonlybytheingenuityoftheoperator.
Alltillingfunctionscanbeenhancedbyexercisingrea-
sonable carewhentillingintoughorrocky soils, and
reasonable careinmaintainingtheattachmentwhennot
inuse.Removinglarge rocks, bottlesand sticks from
thetillingarea,andmowingorburningof excessive
vegetationwillgreatlysimplifythetillers tasks....simi-
larlypaintingbaremetalareaswillgreatlylengthenthe
tillerlifewheninstorage.
Figure 1
Model J-72TillerMountedon210TractorwithK-8WheelWeights,D-12 Chains andH-13WeightBox
5
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OPERATION
TILLER DRIVE
DEPTH ADJUSTMENT
The tillertinerotationmaybestartedandstopped with
anengagingleveronthetillerindependentoftravel speed.
With theengagingleverrearward(behindthestop)the
tillerdriveisdisengaged. With theleverforward,thetiller
is engaged.SeeFigure4.
The tillerisraisedandloweredbythehand lift leveron
themountingbracket.A counterbalancespringispro-
videdtoreducetheamountof lifting effort required.
One notchisprovidedonthe lift leverquadrantfor full
lift. Eightnotchesareprovidedonthelowerendofthe
quadranttoprovideeightpracticalworkingdepths.
RETARDING CHISEL
A retarding chisel isincluded with thetillerformount-
ingbehindthechain case. This chisel aidsintractor
speed controlforsometillingconditions.Byinstalling
this chisel angledaheadandslightlyabovethecutting
levelofthetillertines,itwillhelptopreventthetiller
from drivingthetractortoofast,anditwillalsobreak
uptheridgeunderthechain case {Reference"D",
Figure 2).The chisel canalsobeusedforlimitingtillage
depthbysettingitunderthetinecuttingleveland
anglingittotherear(Reference"E").Thereis little
needforthe chisel whenusingthetillerfornormal
tilling,weedcontrolandaeration.
DRAG SHIELD
The dragshieldinitsnormalposition serves asanaddi-
tionalmeansforbreakingupthesoiltoa finer,uniform
texture.Thetrailingserrationsevenoutthetilledsoilto
leave a smoothsurface,readyforlawnseedingorgarden
planting.Theshieldiseasilyremovablefortillingin
paddies, forroughtillingoraeratingasyouprefer.Refer
totheassemblysectionofthismanualforthecorrectdrag
shield removalandreplacementprocedure.
TINES
This tillerisassembledatthefactory with preciseplace-
mentofeachtinetoachieveproperradialtimingand
overlappingofcuttingpaths.Tinetimingandover-
lappingarecriticalingredientstooptimumtillerproduc-
tion andsmoothoperation,therefore,removingindivid-
ualtinebladesisnotrecommendedexceptforreplace-
ment.
OUTER HUBTINES
Figure 3
Allthreetinesoneachouterhubplatepointintoward
thecenterofthetiller.Thisprovidesa smooth,wellde-
finededgeofcut,reducestheamountof"kickout"of
materialandpermits closer tillingandcultivatingto
plants withoutcatchingfoliageonthetine ends. The
tiller width maybereducedforsevereapplicationby
removingoneormoretine sections.
6
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TRACTOR CONTROLS
A rotarytiller,underfullload, consumes mostofthe
available enginehorsepower,therefore,alwaysoperate
thetillerathighengineRPMtoprovidehighhorsepower
and adequateenginecooling.Luggingtheenginedown
tolowRPMresultsininadequatecoolingandadditional
loss ofhorsepowerthrough excessive internalheat.High
engine RPM also provideshightine speeds formost
effictivetilting.
For mosttillingconditions,creepergearshouldbe used.
Under toughtillingconditions,bestresultswillbeob-
tainedbyallowingthetillertomakeinitialsurfacepene-
trationtoa shallowdepthonthefirst pass, thenincrease
tillingdepthwith successive passes untildesireddepthis
reached.
TILLER LIFT LEVER
DRAG SHIELD
Figure 4
Model J-72Tillermountedon210tractorwithK-8WheelWeights,D-12 chains andH-13WeightBox
OPTIONAL EQUIPMENT REQUIRED FOR BEST PERFORMANCE
Proper weightingofthetractorisimperativetoachieve
satisfactory results. Rearwheelweightsandtire chains
provideimprovedtractionandstability.Frontendweights
willprovideimprovedstabilityandsteeringcontrolofthe
tractorandmustbe used whenoperatingon inclines. If
theH-13frontweightboxis used, a minimumof115
pounds (52Kg)ofweightmustbeaddedtoit.
Optionalweightingcanbeobtainedfromyourauthorized
J I Case CompactTractorDealer.
A
CAUTION: Whenoperatingonan
incline, alwaysbackupanddrive
down. Alwaysuseextremecarein
roughoruneventerrainandin-
clines. Be sure toequipyourtractor
vi/itha minimumof115pounds
(52Kg)offrontcounterweightand
57. pounds(26Kg)ofweightto
each realwheelwithtillerattached
toobtainrequitedoverallstability.
7
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MAINTENANCE
BELTS AND RETAINERS
Beforeoperatingthetillerforthefirst time each season
andagainafterthefirstfewhoursofoperation,recheck
allboltsandretainerstobesuretheyareproperlysecured.
spect, clean,regaporreplace.Uponbreakerpoint
replacement,replacecondenserandresetengine
timinginaccordance with thetractorOperator's
InstructionManual.Inspect,clean,regaporreplace
thesparkplugifneeded.
REDUCTION GEAR HOUSING
Thegearhousingisproperlypacked with number2
Lithiumbasegreaseatthefactoryandwillnormallynot
requirefurtherservicing.Thegearhousingshouldbe
openedatthestartofeach season andrepacked with
grease ifrequired.
TILLER CHAINHOUSING
Thechainhousingisproperlyfilled with number2 Lithium
base greaseatthefactoryandwillnormallynotrequire
furtherservicing.Aninspectionplugislocatedonthe
upperrightsideofthechainhousingandlubricantcanbe
addedatthispointif necessary. Checkthechainhousing
forlubricantatthestartofeach season orifthereshould
beanyevidenceofleakage.
ENGINE
Tillingisoneofthemoredemandingoperationswhich
yourtractorwillbe used. Consequentlymorefre-
quentpreventivemaintenanceisnecessarytomaintain
highengineefficiency.Thefollowingdaily checks will
helptokeepyourtractorperformancelevelhigh.
a. AirCleaner~ Dailyandmore often undersevere
conditions, removeandcarefullytapona flat surface
todislodgedustandotherforeignparticles.Replace
theelementwhenthereisevidence that ithasbecome
saturated with dustwhichwillnottapout.
e.FuelSystem— Useonlya goodgradeof REGULAR
gasoline. Attheendofeach season orifthetractor
willbeoutofuseformorethana month,runallgas
outoftheenginetopreventfueldecompositionand
subsequent pluggingofthecarburetorfueljets.Keep
thefuel-airmixtureproperlyadjustedascoveredin
tractorOperator'sInstructionManual.Checkand
clean filter screeninthefueltankasconditionswar-
rant.
f.Uponcompletionofa periodoftilling,allowthe
enginetoidleforseveralminutestocool-downbefore
turningitoff.
Figure 5
TIRE PRESSURE
b.FrontAirIntakeScreen— Checkandbrushoffall
dirt anddebris.
c. EngineOil— Checkleveleveryeighthoursofopera-
tion (oroftenerwhenindicated).Keepoillevel
betweenmarksongauge.Donotoverfill.Change
theengineoileverytwenty-fivehoursorasconditions
warrant.
d. Ignition— Atthebeginningofeach season andas
conditionswarrant,checkconditionofplugwire,
inspect for cracks, dirt andconnectionatsparkplug.
Ifengineconditionwarrantspointinspection;in-
Inflate tractortirestothepressurespecifiedbelow:
TireSizeTypeRSIk Pa
6:50X 8 Front (High 14
flotation)
8:50X 12Rear (Hight 10
flotation)
STORAGE
100
70
With front end
weightapplied
With rearwheel
weightsand
Check theconditionofallpaintedsurfacesandtouchup
as necessarytopreventrusting. CASE touch-upenamel
is availablethroughyourCompactTractorDealer.Clean
offthetines,hubs,andshaftandapplya coatofheavy
oilorgrease.Storeina dryshelteredlocation.
8
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INSTALLATION
Unpackage your Model J-72tillerandidentifyallthe
pieces shownintheillustrationbelow.
Ina fewofthefollowingphotographstherightwheeland
tire andfenderhavebeenremovedforphotographicclar-
ityonly.Removalofthesepartsisnot necessary for
tillerinstallation.
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INITIAL ASSEMBLY
Initial assemblyofthetilleriseasierifdoneintwostages.
Theyare:
1.Attachingthemountingbrackettothetractor.
2.Attachingthetillerassemblytothemountingbracket.
A. Preparation:
1.Removethetowbracket from thetractor.Savethe
bracket,nutsandboltsforreinstallationwhentiller
is removed.
2.Removetherearseatsupport.Cuta notch3-1/4
inches (90mm)longandeven with bendasshown
inFigure7.Thisnotchisrequiredforclutching
idlerclearance.
3.Removethree belt guards:
a. tractorclutching belt guard
b.tillerprimarydrive belt guard
c. tillersecondarydrive belt guard
4.Installtillerdrivepulley with rollpinprovided.The
pulleyshouldbeinstalled with thelonghubout.
5.Installthedrive belt keeperintherear flangette
retaining bolt. Donot tighten atthistime.
TILLER DRIVE
PULLEY
TRACTOR CLUTCHING
BELT GUARD
"REMOVED"
MOUNTING BRACKET HOLES
Figure7
(WheelandTireandFenderRemovedforclarity)
B. Attaching Mounting BrackettoTractor:
1.Startlowermountingboltson right and left sides
with lockwashernextto bolt headand flat washer.
2.Sliptowerslotsinmountingbracketonstarted
iDolts. Tipbracketupandstartuppermounting
bolts with lockwashers.
3.Tightenallfourbolts.
4.Removeshoulderbushings from lowerrearof
mountingbracketnotingtheirpreassembledposition.
SHOULDER BUSHING
MOUNTING
BRACKET BOLT °^
MOUNTING BOLTS
Figure8
Attaching Mounting BrackettoTractor
(WheelandTireandFenderremovedforclarity)
C. AttachingTillerAssemblyto Mounting Bracketand
InstallingLiftLever:{RefertoFigure9.)
1.Linetillerassemblypivotholesto that inmounting
bracketandsecure with theshoulderbushings,bolts,
washers andnuts.
2.Removepreassemblednut, bolt, sleeveandwashers
from lift lever.(RefertoFigure10.)
3.Removecotterpinandonewasher from lift lever
pivotstud.Position lift leverasillustrated,install
washer andsecure with cotterpin.
4.Ifyourtillerisequipped with assist springanchor
as pictured:
(a)Removecotterpinandwasher from assist
springanchor.
(b) Move lift lever fully aheadtohook assist
springover assist springanchor.
(c)Securespring with washerandcotterpin.
5.Ifyourtillerisnotequipped with assist spring
anchor aspictured:
10
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