COMPLETECONTENTS
MinimumHardwareTighteningTorques7 InstallationofAdjustableFittingsinStraightThreadO-RingBosses9 ................ StandardTorqueDataforHydraulicTubesandFittings9 PipeThreadFittingTorque10 ................................................. InstallationofORFS(O-ringFlatFaced)Fittings10
SECTION00-GENERALINFORMATION Chapter1-GeneralInformation CONTENTS SectionDescription Page SpecialTools 2 Specifications 3 .................................................................. Center-PullDiscMowerConditioner3 Lubrication 5 ................................................................. GeneralInformation5 GreaseFittings5 .......................................................... Chains 5 RecommendedLubricantsandCoolants6 .......................................
SECTION31-IMPLEMENTPOWERTAKEOFF(PTO) Chapter1-DriveLines(StandardTongue) CONTENTS SectionDescription Page H7450/H7550StandardTongue2 Introduction 2 Auto-LokSlideLock4 Disassembly4 Assembly 5 .............................................................. DriveShaftRemovalandInstallation6 StandardDrivelineGuards-Disassembly9 ................................... PrimaryDrivelineGuards-Disassembly10 DrivelineGuards-Inspection11 ............................................. SecondaryDrivelineGuards-Assembly11 80° CVFrontGuardAssembly12 .......................................... CV/U-Joints 13 Disassembly13 .......................................................... Inspection14 Assembly15 ............................................................ TongueJackshaft16 Disassembly16 Assembly18
SECTION31-IMPLEMENTPOWERTAKEOFF(PTO) Chapter2-DriveLines(SwivelHitchTongue) CONTENTS SectionDescription Page H7450/H7550SwivelHitchDriveline2 .............................................. Introduction 2 SlideLock 3 ................................................................. Disassembly3 Assembly 4 .............................................................. DriveShaft 6 Removal 6 ............................................................... StandardDrivelineGuards9 Disassembly9 ............................................................ Reassembly10 U-joints:SwivelHitchUnits10 ................................................. Disassembly10 Reassembly13 TongueJackshaft15 Disassembly15 Installation16 SECTION31-IMPLEMENTPOWERTAKEOFF(PTO) Chapter3-SlipClutch CONTENTS SectionDescription Page Introduction 2 ................................................................ SlipClutchRun-In2 SlipClutchWearInspection3 .................................................. SlipClutch 3 Removal 3 ............................................................... Disassembly4 Inspection5 .............................................................. Reassembly5 Installation9 ..............................................................
Chapter4-OverrunningClutch CONTENTS SectionDescription Page OverrunningClutch2 ......................................................... Disassembly2 Inspection3 .............................................................. Assembly 3
SECTION31-IMPLEMENTPOWERTAKEOFF(PTO)
SECTION31-IMPLEMENTPOWERTAKEOFF(PTO) Chapter5-Gearbox(SwivelHitch) CONTENTS SectionDescription Page Introduction 2 SpecialTools 2 Overhaul 6 SwivelHitchGearboxes6 Description6 ............................................................. Removal 7 Disassembly10 .......................................................... NeckDisassembly12 NeckAssembly16 ....................................................... UpperGearBox21 Disassembly21 .......................................................... Inspection22 Assembly22 ............................................................ UpperGearboxandNeckAssembly24 Assembly24 ............................................................ BacklashAdjustment25 GearContactPattern28 LowerGearBox33 Disassembly33 Inspection34 ............................................................ Assembly34 LowerGearboxandNeckAssembly36 ......................................... Assembly36 BacklashAdjustment37 ................................................... GearContactPattern40 LowerGearbox,NeckAssembly,andUpperGearbox45 .......................... Assembly45 SwivelHitchGearboxInstallation46 ........................................
SECTION35-HYDRAULICSYSTEM
Chapter1-Cylinders CONTENTS SectionDescription Page Introduction 2 HydraulicDiagram4 BleedingAirfromtheLiftCylinders5 LiftCylinderRemoval6 MasterCylinder7 ............................................................. Disassembly7 Inspection8 .............................................................. Assembly 8 SlaveCylinder9 .............................................................. Disassembly9 Inspection10 ............................................................ Assembly10 HeaderTiltCylinder11 ........................................................ Removal 11 Disassembly12 .......................................................... Assembly14 Installation17 TongueSwingCylinder19 Removal19 Disassembly20 .......................................................... Assembly21 Installation23 ............................................................
SECTION39-FRAMES/TONGUEANDHITCHES Chapter1-HoodandHoodLiner CONTENTS SectionDescription Page Hood 2 Removal-H7550Only2 Installation5 HoodLiner 7 Removal 7 ............................................................... Installation8 SECTION55-ELECTRICALSYSTEM Chapter1-ImplementLights CONTENTS SectionDescription Page Introduction 2 ................................................................ TrailingLights3 Description 4 ................................................................ Installing#9603575Socket5 TrailerConnectorRepair7 ..................................................... LightingControlBox8 RemovalandInstallation8 ................................................. ModelH7450/H7550WiringSchematic9
Chapter1-CutterBar CONTENTS SectionDescription Page SpecialTools 2 Introduction 2 Discs 5 KnifeandBoltInspection6 DiscKnives 7 ................................................................ 7DegreeTwistKnives7 14DegreeTwistKnives7 ...................................................... VKnives 7 KnifeReplacement8 .......................................................... CropLifterReplacement(ModelH7450Only)10 RockGuards11 .............................................................. SkidShoes 11 CutterBarInspection/FailureAnalysis12 ....................................... TopCap 15 Removal15 ............................................................. Inspection16 Installation16 CutterBar 19 Removal19 Installation21 ............................................................ CutterBarBayonetBushing22 Replacement22 ......................................................... CutterBar 23 Disassembly23 .......................................................... Reassembly24 DiscModule 28 ............................................................. Disassembly28 Assembly30 ............................................................ CutterBarDriveShaft34 Removal34 ............................................................. Disassembly35 Assembly37 ............................................................
SECTION58-ATTACHMENTS/HEADERS
SECTION58-ATTACHMENTS/HEADERS Chapter2-LeftPedestalShaft CONTENTS SectionDescription Page LeftPedestalShaft2 Disassembly2 Assembly 4 SECTION58-ATTACHMENTS/HEADERS Chapter3-Gearbox(CenterPivot) CONTENTS SectionDescription Page CenterPivotingGearbox2 Removal 2 ............................................................... Disassembly4 Partsidentification7 ....................................................... Inspection8 Assembly 8 .............................................................. BacklashAdjustment12 GearContactPattern13 .................................................. GearboxSupportPlateBushingReplacement15 CenterPivotingGearbox16 ................................................... Installation16 GuidanceLinkShimming19
SECTION58-ATTACHMENTS/HEADERS
Chapter4-Gearbox(RightHand) CONTENTS SectionDescription Page Right-handGearbox2 Removal 2 Disassembly6 Inspection10 PartsIdentification11 ...................................................... Assembly12 BacklashAdjustment17 ................................................... GearContactPattern18 Installation20 ............................................................
Chapter5-Gearbox(ConditionerDriveH7450) CONTENTS SectionDescription Page ModelH7450ConditionerDriveGearbox2 ....................................... Removal 2 Disassembly4 ............................................................ Inspection5 Assembly 6 .............................................................. Installation9 GearboxSpecifications13 .................................................... PivotGearbox13 Right-HandGearbox13 ConditionerDriveGearbox13
SECTION58-ATTACHMENTS/HEADERS
SECTION58-ATTACHMENTS/HEADERS
Installation20 ............................................................
ConditionerRollTensionSystem22
LeftSideTorsionArmandBarDisassembly22
RightSideTorsionArm,TorsionBarandAdjustingTubeDisassembly24
ConditionerRollTensionSystem-Assembly26
RightSideTorsionArm,TorsionBarandAdjustingTubeAssembly26 ...........
LeftSideTorsionArmandBarAssembly29
Chapter6-ConditionerRollsandDrive(H7450) CONTENTS SectionDescription Page Introduction 2 ConditionerBelt3 Adjustment3 Replacement4 ConditionerRollDriveShaft4 .................................................. Removal 4 Disassembly6 ............................................................ Assembly 7 Installation8 .............................................................. LowerConditionerRoll10 Removal10 ............................................................. Installation14 UpperConditionerRoll17
Removal17
....................................................
Chapter7-ConditionerFlailandDrive(H7550) CONTENTS SectionDescription Page SpecialTools 2 ConditionerBelt3 Replacement3 Flail 4 Removal 4 ............................................................... Installation6 Rotor 7 ...................................................................... Removal 7 Installation12 ............................................................ ConditionerDriveShaftñRemoval17 ConditionerDriveShaftñDisassembly18 ................................... ConditionerDriveShaftñAssembly20 ConditionerDriveShaftñInstallation21 ..................................... DriveShaftBearingñRemoval22 DriveShaftBearingñDisassembly23 ...................................... DriveShaftBearingñAssembly26 DriveShaftBearingñInstallation28 SECTION90-DECALS Chapter1-Decals CONTENTS SectionDescription Page SafetyDecals 2
SECTION58-ATTACHMENTS/HEADERS
InstallationofAdjustableFittingsinStraightThreadO-RingBosses9 StandardTorqueDataforHydraulicTubesandFittings9 ........................... PipeThreadFittingTorque10 InstallationofORFS(O-ringFlatFaced)Fittings10
SECTION00--GENERALINFORMATION--CHAPTER1 00-1 SECTION00-GENERALINFORMATION Chapter1-GeneralInformation CONTENTS SectionDescription Page SpecialTools 2 Specifications 4 Center-PullDiscMowerConditioner4 Lubrication 5 GeneralInformation5 ......................................................... GreaseFittings5 Chains 5 ................................................................. RecommendedLubricantsandCoolants6
MinimumHardwareTighteningTorques7 ........................................
...............................
SPECIALTOOLS
ToolNumber
Section31
NHO1386
Description/Use
Pivottonguegearboxneckcapscrews 610R Snapringremover
LocalManufacture Necklocknutremoval
LocalManufacture Holdingtoolforneckhousing
LocalManufacture Neckrollingtorquemeasurement
Section58
FNH23ET95
FNH01221-2
FNH01221-3
Topcapbearingcover
Cutterbartieboltholdingtool
Cutterbarwrench
SECTION00--GENERALINFORMATION--CHAPTER1 00-2
SPECIFICATIONS
CENTER-PULLDISCMOWERCONDITIONER
MODEL
CutterBar
H7450
H7550
Cuttingwidth 4.0mm(13ft0in) 4.0mm(13ft0in)
Cuttingheight 24--81mm(0.95--3.2in)
Cuttingheightw/opt.high-stubbleshoes 58--115mm(2.25--4.5in)
Cutterbartiltangle,degrees 2--10
Typecutterbar Modular
Numberofdiscs/Knivesperdisc 10/2 10/2
Discspeed@ratedPTOspeed 3000rpm
Cutterbarshearprotection Std.--Frangiblesplinesindiscdrivehub
Cutterbarflotation Verticalandlateral,adjustablesprings
Conditioner
Type
Chevronintermeshingmolded rubberrolls FlailRotorw/100taperedflails
Length 2591mm(102in) 2591mm(102in)
Diameter 264mm(2x10.4in)rolls 560mm(1x22in)flailrotor
Drive 4HBv-belt&enclosedgears 4HBv-belt
Speed,rpm 740 1011std.or726opt.
ConditioningRollTensionAdjustment Singlecrank NA
Conditionergapadjustment Drawboltstop,eachend Singlecrankadjustmentof rotorhood
Swathwidth 2.4m(8ft) 2.4m(8ft)
Windrowwidth .9--2.4m(3--8ft) .9--2.4m(3--8ft)
Driveline
Inputspeed,rpm 1000
Drivelineprotection SlipClutchandOverrunningClutchAssembly@rearofPTO shaft
TractorRequirements
MinimumPTOpowerrequired 67kW(90Hp) 67kW(90Hp)
PTOshaftspline/sizerequirements 21-spline/1-3/8inch 21-spline/1-3/8inch
Hydrauliccircuitsrequired 2
Minimumreliefpressurerequired 103bar(1500psi)
Electrical 7-pinelectricalconnectorfortransportlights
Drawbar/3-ptHitch ASAECat.IIorIIIdrawbarorCat.III3-pthitch
SECTION00--GENERALINFORMATION--CHAPTER1 00-3
Tires
TublessAgribimplementtires 31x13.5--158PR
TransportSpeed,Maximum,mph 20(32)
DimensionsandWeight
Width,transport
Width,operating
Length,transport*
Length,operating*
4.0m(13ft2in)
5.9m19ft5in)w/stddrawbarhitch; 6.5m(21ft3in)w/2-ptswivelhitch; 5.9m(19ft7in)w/drawbarswivelhitch
7.2m(24ft7in) w/stddrawbarhitch; 8.1m(26ft5in) w/2-ptswivelhitch; 7.4m(25ft5in) w/drawbarswivelhitch
5.8m(20ft2in) w/std.drawbarhitch; 6.7m(22in1ft) w/2-ptswivelhitch; 6.4m(21ft1in) w/drawbarswivelhitch
7.6m(25ft1in) w/stddrawbarhitch; 8.2m(26ft11in) w/2-ptswivelhitch; 7.9m(25ft11in) w/drawbarswivelhitch
6.3m(20ft8in) w/std.drawbarhitch; 6.9m(22ft7in) w/2-ptswivelhitch; 6.6m(21ft7in) w/drawbarswivelhitch
Height,transport 2.0m(6ft8in)
Height,operating 1.7m(5ft8in)
Groundclearancew/headerfullyraised 457mm(18in)
Weight,Shipping
Weight,Operating
w/Std.Tongue 2771kg(6110lb); w/2ptordbr 2899kg(6390lb); w/steel(CIH) add45kg(100lb)
w/Std.Tongue 2631kg(5800lb); w/2ptordbr 2758kg(6080lb); w/steel(CIH) add45kg(100lb)
w/Std.Tongue 2722kg(6000lb); w/2ptordbr 2849kg(6280lb)
w/Std.Tongue 2576kg(5680lb); w/2ptordbr 2703kg5960lb)
*Windrowshieldsfullyopenforlengthinbothtransportandoperatingpositions.Flailcurtainisdownforall heightandlengthmeasurements.
Lengthwithflailcurtainupshouldbereducedby152mm(6in).Heightwithflailcurtainupshouldbe increasedby279mm(11in).
SECTION00--GENERALINFORMATION--CHAPTER1 00-4 MODEL H7450
H7550
LUBRICATION
Adequatelubricationandmaintenanceonaregular scheduleisvitaltomaintainingyourequipment.To ensurelongserviceandefficientoperation,followthe lubricationandmaintenanceschedulesoutlinedin thismanual.Theuseofproperfuels,oils,greaseand filters,aswellaskeeping thesystemsclean,willalso extendmachineandcomponentlife.
IMPORTANT: Alwaysusegenuine NewHolland replacementparts,oilsandfilterstoensureproper operation,filtrationof engineandhydraulicsystems. Seeyour NewHolland dealerforadditionaloil quantities.
GENERALINFORMATION
Regularlubricationisthebestinsuranceagainst delaysandrepairs.Properlubricationwillextend machinelife.Refertothefollowingchartsfor lubricantsandserviceintervals.
IMPORTANT: Failuretocompletetherequired maintenanceattherecommendedintervalscan causeunnecessarydowntime.
TheintervalslistedintheLubricationChartare guidelinestobeusedwhenoperatinginnormal conditions.Adjusttheintervalsforoperatingin adverseenvironmentalandworkingconditions.The intervalsshouldbeshortenedforsandy,dustyand extremelyhotoperatingconditions.
CAUTION
Observethefollowingsafetyprecautionsbefore performinganylubricationormaintenance:
--Shutoffengine.
--Disengagealldrives.
--Engageparkbrake.
--Lowerallattachmentstothegroundorraise andengageallsafetylocks.
--Closeallshieldsthatareopenedandreinstall anyshieldsremovedforlubricationand maintenancepurposes.
Failuretocomplymayresultinminoror moderateinjury.
CAUTION
Someillustrationsinthismanualshowshields openedorremovedtodisplayareasbeing serviced.Replaceallshieldsbeforeoperating themachine.Failuretocomplycouldresultin deathorseriousinjury.
M1213
Alwayscleantheareaarounddipsticks,fillcaps,and checkplugswhencheckingfluidlevels.Failureto cleantheseareasmayallowcontaminationtoenter thesystem.Drain,flushandrefillthesystemanytime yoususpectitiscontaminated.
GreaseFittings
Wipedirtfromfittingsbeforegreasing.
Pumpfreshgreaseintofittingtoadequatelylubricate thecomponentandforceoutanycontaminationfrom thegreasepassage.
Wipeoffexcessgrease.
Useagreaseguncontainingcleanhighgradeof multipurposegrease.
Chains
Stopalldrivesbeforelubricatingchains.
SECTION00--GENERALINFORMATION--CHAPTER1 00-5
M1460
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