Copyright 2008 CNH France S.A.Printed in FranceCNH Lep SM75SRTOC-0EN March 2008CRAWLER EXCAVATOR CX75SR/CX80 TIER 3SERVICE MANUALTABLE OF CONTENTSDIVISION/SECTION SECTION N REFERENCE N1 GENERAL INFORMATIONSafety, general information and standard torque data..................................... 1001 7-27691ENGeneral specifications and special torque setting ........................................... 1002 SC75SRCX80-1002-2EN2 ENGINERemoval and installation of the engine............................................................ 2000 SM75SR2000-0ENEngine specifications..............................................................................................*Disassembly and assembly of the engine ..............................................................*3 FUEL SYSTEMRemoval and installation of the fuel tank......................................................... 3001 SM75SR3001-0ENFuel engine system................................................................................................*4 ELECTRICAL SYSTEMElectrical and engine functions and service support ....................................... 4001 SC75SRCX80-4001-0ENElectrical equipment and electrical circuit diagrams........................................ 4020 SC75SRCX80-4020-0EN5 UNDERCARRIAGERemoval and installation of tracks................................................................... 5001 SM75SR5001-0ENRollers ............................................................................................................. 5003 SM75SR5003-0ENTake-up roller................................................................................................... 5005 SM75SR5005-0EN6 DRIVE TRAINRemoval and installation of the drive motor and final drive transmission................................................................................ 6001 SM75SR6001-0ENDisassembly and assembly of the drive motor and final drive transmission................................................................................ 6002 SM75SR6002-0ENRemoval and installation of the swing motor and swing reduction gear ................................................................................... 6003 SM75SR6003-0ENDisassembly and assembly of the swing reduction gear ................................. 6004 See 80197 UNDERCARRIAGE HYDRAULICS*Consult the Engine Service ManualCopyright Lep SM75SRTOC-0EN Issued 03-08DIVISION/SECTION SECTION N REFERENCE N8 UPPERSTRUCTURE HYDRAULICSSpecifications, troubleshooting, checks and hydraulic pressure settings.......................................................................... 8001 SC75SRCX80-8001-1ENRemoval and installation of the hydraulic reservoir ......................................... 8002 SM75SR8002-0ENRemoval and installation of the main hydraulic pump...................................... 8003 SM75SR8003-0ENRemoval and installation of the main hydraulic control valve - CX75SR ......... 8004 SM75SR8004-0ENRemoval and installation of the main hydraulic control valve - CX80 .............. 8004 SM80-8004-0ENRemoval and installation of the attachment cylinders...................................... 8005 SM75SR8005-0ENRemoval and installation of the hydraulic swivel .............................................. 8006 SM75SR8006-0ENRemoval and installation of the pilot blocs....................................................... 8007 SM75SR8007-0ENDisassembly and assembly of the main hydraulic pump ................................. 8010 SM75SR8010-0ENDisassembly and assembly of the main hydraulic control valve - CX75SR..... 8011 SM75SR8011-0ENDisassembly and assembly of the main hydraulic control valve - CX80.......... 8011 SM80-8011-0ENDisassembly and assembly of the attachment cylinders ................................. 8012 SM75SR8012-0ENDisassembly and assembly of the hand control levers .................................... 8013 SM75SR8013-0ENDisassembly and assembly of the foot control levers ...................................... 8014 SM75SR8014-0ENDisassembly and assembly of the solenoid valve block .................................. 8015 SM75SR8015-0ENDisassembly and assembly of the cushion valve............................................. 8016 SM75SR8016-0ENDisassembly and assembly of the hydraulic swivel ......................................... 8018 SM75SR8018-0ENDisassembly and assembly of the swing motor ............................................... 8019 SM75SR8019-0ENHydraulic functions .......................................................................................... 8020 SC75SRCX80-8020-0ENHydraulic component functions........................................................................ 8030 SC75SRCX80-8030-0EN9 UPPERSTRUCTUREAir conditioning unit ......................................................................................... 9007 SM75SR9007-0ENLarge size hydraulic schematics - CX75SR.................................................. Pocket 87725706ALarge size electrical schematics - CX75SR.................................................. Pocket 87732675ALarge size hydraulic schematics - CX80....................................................... Pocket KAJ11600-E00Large size electrical schematics - CX80....................................................... Pocket KAJ11060-E00NOTE: CNH Company reserves the right to make changes in the specificationand design of the machine without prior notice and without incurring any obliga-tion to modify units previously sold.The description of the models shown in this manual has been made in accord-ancewiththetechnicalspecificationsknownasofthedateofdesignofthisdocument.Copyright CNHCopyright 2006 CNH France S.A.Printed in FranceFebruary 2006 Lep 7-27691EN1001SAFETY, GENERAL INFORMATIONAND TORQUE SPECIFICATIONSSection1001Copyright 1001-2Lep 7-27691EN Issued 02-06TABLE OF CONTENTSGENERAL INFORMATION....................................................................................................................................... 3SAFETY..................................................................................................................................................................... 4STANDARD TORQUE DATA FOR CAP SCREWS AND NUTS............................................................................... 6WARNING : This symbol is used in this manual to indicate important safety messages. Whenever you seethis symbol, carefully read the message that follows, as there is a risk of serious injury. !Copyright 1001-3 Lep 7-27691EN Issued 02-06GENERAL INFORMATIONCleanningCleanallmetalpartsexceptbearings,inasuitablecleaningsolventorbysteamcleaning.Donotusecausticsodaforsteamcleaning.Aftercleaning,dryandputoilonallparts.Cleanoilpassageswithcompressed air. Clean bearings in a suitable cleaningsolvent,drythebearingscompletelyandputoilonthe bearings.InspectionCheckallpartswhenthepartsaredisassembled.Replaceallpartsthathavewearordamage.Smallscoringorgroovescanberemovedwithahoneorcrocuscloth.Completeavisualinspectionforindicationsofwear,pittingandthereplacementofparts necessary to prevent early failures.BearingsCheckbearingsforeasyaction.Ifbearingshavealoosefitorroughactionreplacethebearing.Washbearingswithasuitablecleaningsolventandpermittoairdry.DONOTDRYBEARINGSWITHCOMPRESSED AIR.Needle bearingsBeforeyoupressneedlebearingsinaborealwaysremove any metal protrusions in the bore or edge ofthe bore. Before you press bearings into position putpetroleum jelly on the inside and outside diameter ofthe bearings.GearsCheck all gears for wear and damage. Replace gearsthat have wear or damage.Oil seals, O-rings and gasketsAlways install new oil seals, O-rings and gaskets. Putpetroleum jelly on seals and O-rings.ShaftsCheckallshaftsthathavewearordamage.Checkthebearingandoilsealsurfacesoftheshaftsfordamage.Service partsAlwaysinstallgenuineCaseserviceparts.Whenordering refer to the Parts Catalog for the correct partnumberofthegenuineCasereplacementitems.FailuresduetotheuseofotherthangenuineCasereplacement parts are not covered by warranty.LubricationOnlyusetheoilsandlubricantsspecifiedintheOperatorsorServiceManuals.Failuresduetotheuseofnon-specifiedoilsandlubricantsarenotcovered by warranty.Copyright 1001-4 Lep 7-27691EN Issued 02-06SAFETYThis symbol means ATTENTION! BECOME ALERT! YOURSAFETYISINVOLVED.Themessagethatfollowsthesymbol contains important information about safety. Carefullyreadthemessage.Makesureyoufullyunderstandthecauses of possible injury or death.!To prevent injury always follow the Warning, Cautionand Danger notes in this section and throughout themanual.Putthewarningtagshownbelowonthekeyforthekeyswitchwhenservicingorrepairingthemachine.Onewarningtagissuppliedwitheachmachine.AdditionaltagsPartNumber331-4614areavailablefrom your service parts supplier.WARNING: Read the operators manual tofamiliarizeyourselfwiththecorrectcontrolfunctions.!WARNI NG: Operatethemachi neandequipmentcontrolsfromtheseatpositiononl y.Anyothermethodcoul dresul ti nserious injury.!WARNING: This is a one man machine, noriders allowed. !WARNING: Beforestartingengine,studyOperatorsManualsafetymessages.Readall safety signs on machine. Clear the area ofother persons. Learn and practice safe useof controls before operating.Itisyourresponsibilitytounderstandandf ol l owmanuf act ur er si nst r uct i onsonmachineoperation,serviceandtoobservepertinentlawsandregulations.Operatorsand Service Manuals may be obtained fromyour Case dealer.!WARNING: If youwear clothing that is tool ooseordonotusethecorrectsafetyequipment for your job, you can be injured.Alwayswearclothingthatwillnotcatchonobjects. Extra safety equipment that can berequired includes hard hat, safety shoes, earprotection,eyeorfaceprotection,heavygloves and reflector clothing.!WARNING: When working in the area of thefan belt with the engine running, avoid looseclothing if possible, and use extreme caution.!WARNING: Whendoingchecksandtestsontheequipmenthydraulics,followtheproceduresastheyarewritten.DONOTchange the procedure.!WARNING: Whenputtingthehydrauliccyl i ndersonthi smachi nethroughthenecessarycyclestocheckoperationortoremoveairfromacircuit,makesureallpeople are out of the way.!Copyright 1001-5 Lep 7-27691EN Issued 02-06WARNING: Use insulated gloves or mittenswhen working with hot parts.!WARNING: Lowerallattachmentstotheground oruse standstosafelysupporttheattachments before you do any maintenanceor service.!WARNING: Pin sized and smaller streamsof hydraulic oil under pressure can penetratetheskinandresultinseriousinfection.Ifhydraulic oil under pressure does penetratet heski n, seekmedi cal t r eat mentimmediately. Maintain all hoses and tubes ingoodcondition.Makesureallconnectionsare tight. Make a replacement of any tube orhosethatisdamagedorthoughttobedamaged. DO NOT use your hand to checkfor leaks, use a piece of cardboard or wood.!WARNING: When removing hardened pinssuch as a pivot pin, or a hardened shaft, usea soft head (brass or bronze) hammer or useadrivermadefrombrassorbronzeandasteel head hammer.!WARNING: Whenusi ngahammert oremoveandinstallpivotpinsorseparatepartsusi ngcompressedai rorusi ngagrinder, wear eye protection that completelyenclosestheeyes(approvedgogglesorother approved eye protectors).!WARNING: Usesuitablefloor(service)jacks or chain hoist to raise wheels or tracksoff the floor. Always block machine in placewith suitable safety stands.!WARNING: When servicing or repairing themachine, keep the shop floor and operatorscompartmentandstepsfreeofoil,water,grease,tools,etc.Useanoilabsorbingmaterial and/or shop cloths as required. Usesafe practices at all times.!WARNI NG: Somecomponentsofthi smachine are very heavy. Use suitable liftingequipment or additional help as instructed inthis Service Manual.!WARNING: Engineexhaustfumescancausedeath.Ifitisnecessarytostarttheengine in a closed place, remove the exhaustfumesfromtheareawithanexhaustpipeextension. Open the doors and get outsideair into the area.!WARNING: When the battery electrolyte isfrozen, the battery can explode if (1), you tryto charge the battery, or (2), you try to jumpstartandruntheengine.Topreventthebattery electrolyte from freezing, try to keepthe battery at full charge. If you do not followthese instructions, you or others in the areacan be injured.!Copyright 1001-6 Lep 7-27691EN Issued 02-06STANDARD TORQUE DATA FOR CAP SCREWS AND NUTSTightening of cap screws, nutsTighten alternately so that tightening torque can be applied evenly. The numbers in the figure below indicate theorder of tightening.JS00481ACap screws which have had Loctite used (white residue remains after removal) should be cleaned with loght oil orsuitablecleaningsolventanddried.Apply2-3dropsofLoctitetothethreadportionofthecapscrewandthentighten.Torque tableTighten cap screws and nuts according to the table below if there are no other special instructions.Cap Screw Name Size (Size) M6 M8 M10 M12 M14 M16 M18 M20Cap ScrewSpanner[mm] 10 13 17 19 22 24 27 30[in.] 0.39 0.51 0.67 0.75 0.87 0.95 1.06 1.18Tighteningtorque[Nm] 6.9 19.6 39.2 58.8 98.1 156.9 196.1 294.2[lb-ft] 5.1 14.5 28.9 43.4 72.3 115.7 144.6 217Socket Head Cap ScrewSpanner[mm] 5 6 8 10 12 14 14 17[in.] 0.20 0.24 0.32 0.39 0.47 0.55 0.55 0.67Tightening torque[Nm] 8.8 21.6 42.1 78.5 117.7 176.5 245.2 343.2[lb-ft] 6.5 15.9 31.1 57.9 86.9 130.2 181 253.2Copyright Section10021002Lep SC75SRCX80-1002-0EN Printed in FranceCNHSPECIFICATIONSAND SPECIAL TORQUE SETTINGSCopyright @ 2008 CNH France SAMars 2008Copyright Lep SC75SRCX80-1002-0EN Issued 03-081002-2TABLE OF CONTENTSTYPE, SERIAL NUMBERAND YEAR OF MANUFACTURE OF THE MACHINE..................................................................................................... 5Machine ....................................................................................................................................................................... 5Engine.......................................................................................................................................................................... 5Serial numbers of the components .............................................................................................................................. 5FLUIDS AND LUBRICANTS ............................................................................................................................................ 6Hydraulic fluid .............................................................................................................................................................. 6Transmission component oil ........................................................................................................................................ 6Grease ......................................................................................................................................................................... 6Engine Oil .................................................................................................................................................................... 7Engine fuel, maintenance of fuel filters and fuel storage ............................................................................................. 8Anti-freeze/Anti-corrosion........................................................................................................................................... 10Environment ............................................................................................................................................................... 10Plastic and resin parts................................................................................................................................................ 10SPECIFICATIONS ......................................................................................................................................................... 11Main data ................................................................................................................................................................... 11Performance .............................................................................................................................................................. 11Main body dimensions ............................................................................................................................................... 11Engine........................................................................................................................................................................ 11Cooling system .......................................................................................................................................................... 12Capacity of coolant and lubricants ............................................................................................................................. 12Air conditioning .......................................................................................................................................................... 12Hydraulic oil filter........................................................................................................................................................ 12Fuel filter .................................................................................................................................................................... 12Operating devices ...................................................................................................................................................... 12Hydraulic system........................................................................................................................................................ 13Hydraulic Cylinders .................................................................................................................................................... 15Rotating Joint ............................................................................................................................................................. 16Swing unit .................................................................................................................................................................. 21Travel lower body....................................................................................................................................................... 21Work Unit ................................................................................................................................................................... 22COMPONENT WEIGHT................................................................................................................................................. 24Major component weight (CX75SR)........................................................................................................................... 24Major component weight (CX80)................................................................................................................................ 25Other component weight ............................................................................................................................................ 26DIMENSIONS AND WEAR LIMIT OF THE TRACK ASSEMBLY .................................................................................. 27Sprocket ..................................................................................................................................................................... 27Idler wheel.................................................................................................................................................................. 28Upper roller ................................................................................................................................................................ 29WARNING:Thissymbolisusedinthismanualtoindicateimportantsafetymessages.Wheneveryouseethissymbol, carefully read the message which follows. Your safety depends on it.!Copyright Lep SC75SRCX80-1002-0EN Issued 03-081002-3Lower roller .................................................................................................................................................................30Track...........................................................................................................................................................................31DIMENSIONS AND WEAR LIMITS OF ATTACHMENT LINKAGES (MONO BOOM) ...................................................321. Boom foot/Frame....................................................................................................................................................322. Boom cylinder foot/Frame.......................................................................................................................................333. Boom cylinder head/Boom......................................................................................................................................334. Dipper cylinder foot/Boom ......................................................................................................................................345. Boom/Dipper...........................................................................................................................................................346. Dipper cylinder head/Dipper ...................................................................................................................................347. Bucket cylinder foot/Dipper.....................................................................................................................................358. Connecting rod/Dipper............................................................................................................................................359. Compensator/Bucket ..............................................................................................................................................3510. Connecting rod/Compensator/Bucket cylinder head ............................................................................................3611. Dipper/Bucket .......................................................................................................................................................36DIMENSIONS AND WEAR LIMITS OF ATTACHMENT LINKAGES (CX75SR OFFSET BOOM) .................................371. Base Boom/Offset boom.........................................................................................................................................372.Base Boom/Offset cylinder/Rod...............................................................................................................................383. Offset Boom/ Offset cylinder...................................................................................................................................384. Offset Dipper/Rod...................................................................................................................................................395. Offset arm/Offset Boom..........................................................................................................................................396. Offset Dipper/ Dipper cylinder.................................................................................................................................397. Offset dipper/Dipper................................................................................................................................................408. Dipper/Dipper cylinder ............................................................................................................................................409. Dipper/Bucket cylinder............................................................................................................................................40DIMENSIONS AND WEAR LIMITS OF BLADE AND BLADE CYLINDER.....................................................................4110. Blade/Blade cylinder .............................................................................................................................................4111. Lower frame/Blade cylinder ..................................................................................................................................4112. Lower frame/Blade................................................................................................................................................42LIST OF SHIMS..............................................................................................................................................................43For Adjusting Attachment Gaps..................................................................................................................................43For Adjusting Attachment Gaps (for Boom Foot)........................................................................................................47SPECIAL TORQUE SETTINGS CX75SR.......................................................................................................................49SPECIAL TORQUE SETTINGS CX80............................................................................................................................52MACHINE OVERALL DIMENSIONS..............................................................................................................................55Copyright Lep SC75SRCX80-1002-0EN Issued 03-081002-4Copyright Lep SC75SRCX80-1002-0EN Issued 03-081002-5TYPE, SERIAL NUMBERAND YEAR OF MANUFACTURE OF THE MACHINEFor all part orders, request for information or assistance, always specify the type and the serial number of the machineto your Case dealer.Fill in the following lines with the required information: Type, serial number, year of manufacture of the machine and theserial numbers of the hydraulic and mechanical components.MachineCT04A171A(1) Type .......................................................................................................................................................................(2) Serial number.........................................................................................................................................................(3) Year of manufacture...............................................................................................................................................EngineMake and type.............................................................................................................................................................Serial number ..............................................................................................................................................................Serial numbers of the componentsHydraulic pump ...........................................................................................................................................................Swing reduction gear...................................................................................................................................................Travel reduction gears .................................................................................................................................................Control valve................................................................................................................................................................132Copyright Lep SC75SRCX80-1002-0EN Issued 03-081002-6FLUIDS AND LUBRICANTSLubricants must have the correct properties for each application.Hydraulic fluidCASE/AKCELA hydraulic fluid is specially designed for high pressure applications and for the CASE hydraulic system.The type of fluid to be used depends on the ambient temperature.Temperate climates: -20C to +40C (-4 to 104 F)CASE/AKCELA: HYDRAULIC EXCAVATOR FLUID (MS 1230. ISO VG 46. DIN 51524 PART 2 HV)Hot climates: 0C to +50C (32 to 122 F)CASE/AKCELA: AW HYDRAULIC FLUID 68 HV (MS 1216. ISO VG 68. DIN 51524 PART 3 CATEGORY HVLP)Cold climates: -25C to +20C (-13 to 68 F)CASE/AKCELA: AW HYDRAULIC FLUID 32 (MS 1216. ISO VG 32. DIN 51524 PART 2)Biodegradable fluid: -30C to +40C (-22 to 104 F)This yellow-colored fluid is miscible with standard fluid. If used to change standard fluid, it is advised to drain the circuitcompletely before refilling with this fluid.CASE/AKCELA: HYDRAULIC EXCAVATOR FLUID BIO (MS 1230. ISO VG 46. DIN 51524 PART 2 HV)Transmission component oilExtreme pressure oil used for enclosed transmission components.CASE/AKCELA: GEAR 135H EP (SAE 80W-90. API GL 5. MIL-L-2105 D. MS 1316. ZF TE-ML 05A)GreaseCASE/AKCELA: MOLY GREASE 251H EP-M (251H EP-M. NLGI 2)"Extreme Pressure" multipurpose grease with lithium soap and molybdenum disulphide.CASE/AKCELA: MULTIPURPOSE GREASE 251H EP (251H EP. NLGI 2) "Extreme Pressure" multipurpose grease with lithium soap and calcium.CASE/AKCELA: PREMIUM GREASE EP2 (NLGI 2)"Extreme Pressure" multipurpose grease with lithium soap.Hydraulic breakersCASE/AKCELA: MULTIPURPOSE GREASE 251H EP (NLGI 2).WARNING: The conditions of use for individual fluids and lubricants must be respected.!Copyright Lep SC75SRCX80-1002-0EN Issued 03-081002-7Engine OilTHE CASE/AKCELA No. 1 engine oil is recommendedforyourengine.Thisoilensuresproperlubricationofyour engine for all operating conditions.IftheCASE/AKCELAMultigrade"No.1ENGINEOIL"cannot be obtained, use the oil corresponding to one ofthe following categories: ACEA E7. API CI-4.CP02N001Oil viscosity / Oil rangeCT02M0011) With mineral base(2) With semi-synthetic base(3) With synthetic base33122Copyright Lep SC75SRCX80-1002-0EN Issued 03-081002-8Engine fuel, maintenance of fuel filters and fuel storageIn order to meet the emission control regulation of 3rd-stage, the engine components have been made precisely andthey are to be used under high-pressure conditions.Therefore, the specified fuel must be used for the engine.As a matter of course, not only the guarantee will not be given for the use of a fuel other than the specified but also itmay invite a serious breakdown.In addition, since suitable specifications for the fuel filter elements have been established for this engine, use of the gen-uine filter is essential.The following describes the specifications and the requirements of the fuel to be applied, and maintenance of the fueland the fuel elements.Fuel to be appliedSelection of fuelFollowing conditions must be met for the diesel engines, that is the one;1 In which no dust even fine one is mixed,2 With proper viscosity,3 With high cetane rating,4 With good flow properties in lower temperature,5 With not much sulfur content, and6 With less content of carbon residueApplicable standards for diesel fuelIf a standard applied to the fuel for the diesel engine is stipulated in your country, check the standard for details.Requirements for diesel fuelAlthough conditions required for the diesel fuel are illustrated above, there are other requirements exerting a biginfluence on its service durability and service life.Be sure to observe the following requirements for selecting fuel.Sulfur content ............................................................................... 2500 ppm or lessHFRR*.......................................................................................... 460 mm or lessWater content............................................................................... 0.05 wt% or less* HFRR (High-Frequency Reciprocating Rig.): An index showing lubricating properties of the fuel.Sulfur content reacts to moisture to change into sulfuric acid after combustion.Use of a fuel containing muchsulfurcontentallows it toaccelerateinternal corrosionand wear.In addition, much sulfur content quickens deterioration of engine oil allowing its cleaning dispersive property to beworse which results in acceleration of wear of sliding portions.HFRR is an index that indicates lubricating property of a fuel.Large value of the index means poor lubrication so that seizure of the machine components may result if such afuel is used.Since a fuel with high HFRR value also has lower viscosity, it can easily be leaked out.Applicable Standard RecommendationJIS (Japanese Industrial Standard) NO.2DIN (Deutsche Industrie Normen) DIN 51601SAE (Society of Automotive Engineers)Based on SAE-J-313C NO. 2-DBS (British Standard)Based on BS/2869-197 Class A-1EN590Copyright Lep SC75SRCX80-1002-0EN Issued 03-081002-9If the fuel is mixed with the engine oil, the oil is diluted to deteriorate its lubricating property resulting in accelera-tion of wear.Water content allows inside of the fuel tank to rust which in turn blocking the fuel line and the fuel filter.IMPORTANT : In cold weather, fill the fuel tank at the end of the day's work, in order to prevent the formation of conden-sation.This may also cause wear and seizure of the machine components.If atmospheric temperature goes below the freezing point, moisture content in the fuel forms fine particle of iceallowing the fuel line to be clogged.IMPORTANT : Obtain table of analysis for the fuel you are using from the fuel supplier to confirm that it meets the crite-ria described above.IMPORTANT : If a fuel which does not meet the specifications and the requirements for the diesel engine, function andperformance of the engine will not be delivered. In addition, never use such a fuel because a breakdown of the engineor an accident may be invited.Guarantee will not be given to a breakdown caused by the use of a improper fuel.Some fuels are used with engine oil or additives mixed together with diesel engine fuel.In this case, do not use these fuels because damage to the engine may result as the fuel has been contaminated.It is natural that the emission control regulation of 3rd-stage will not be cleared in case where a fuel that does notmeet the specifications and the requirements is used.Use the specified fuel for compliance of the exhaust gas control.IMPORTANT : It you use diesel fuel which contains much sulfur content more than 2500 ppm, be sure to fol- low theitems below for the engine oil selection and maintenance of engine parts. Guarantee will not be given to breakdownscaused by not to follow these items.1 Selection of engine oilUse API grade CF-4 or JASO grade DH-1.2 Exchange the engine oil and engine oil filter element by the periodical interval reported on the OperatorsManual.3 Inspect and exchange the EGR (*)parts and fuel injector parts of engine every 3000 hour of use.* EGR: Exhaust Gas RecircultionMaintenance of fuel filtersBe sure to use the genuine fuel filters.The fuel injection system is precisely constructed and the genuine filter employs finer mesh than conventional fil-ters to improve protection of machine equipment.If a filter with coarse mesh is used, foreign object passing through the filter enters into the engine so that machineequipment can wear out in a short period of time.IMPORTANT : If a fuel filter other than the genuine filter is used, guaranty will not be applied to a fault caused by theuse of a wrong filter.Two kinds of fuel filter, the pre-filter and the main filter, are mounted on the machine.Be sure to use the genuine fuel filters and replace them at the periodic intervals reported on the operators Man-ual.IMPORTANT : Since the pre-filter also has a function of water separation, discharge water and sediment when the floatreaches lower part of the filter elements. CHECK EVERY DAY before to start the engine.Time to replace filters may be advanced according to properties of the fuel being supplied. Therefore, take measures to prevent dust or water from being entered in the fuel tank when sup- plying fuel. When supplying fuel directly from a fuel drum can, leave the drum as it stands for a long period of time to supplyclean fuel standing above a precipitate. If it is hard to leave the drum for a long period of time, install a fuel strainer and a water separator before the fueltank of the machine to supply clean fuel.Water drain cock is provided on the bottom side of the fuel tank. Drain water before starting the engine every morning. In addition, remove the cover under the tank once a year to clean up inside of the tank.Copyright Lep SC75SRCX80-1002-0EN Issued 03-081002-10Fuel storageLongstoragecanleadtotheaccumulationofimpuritiesandcondensationinthefuel.Enginetroublecanoftenbetraced to the presence of water in the fuel.The storage tank must be placed outside and the temperature of the fuel should be kept as low as possible. Drain offwater and impurities regularly.Anti-freeze/Anti-corrosionUse anti-freeze in all seasons to protect the cooling system from corrosion and all risk of freezing.CASE/AKCELA: PREMIUM ANTI-FREEZE (MS 1710)For areas where the temperature goes down to -38C (-36.4F), mix 50/50 with water.IMPORTANT : Do not mix products of a different origin or brand. The same product must be used when topping up thesystem.EnvironmentBeforecarryingoutanymaintenanceoperationonthismachineandbeforedisposingofusedfluidsorlubricants,always think of the environment. Never throw oil or fluid on the ground and never place it in leaking receptacles.Contact your local ecological recycling centre or your CASE Dealer to obtain information on the correct method of dis-posing of these lubricants.Plastic and resin partsWhen cleaning plastic parts, the console, the instrument panel, the indicators etc... avoid using petrol, kerosene, paintsolvents etc... Use only water, soap and a soft cloth.The use of petrol, kerosene, paint solvents etc... causes discoloration, cracks or deformation of these parts.Copyright Lep SC75SRCX80-1002-0EN Issued 03-081002-11SPECIFICATIONSMain dataModel name...............................................CX75SR, CX80 (Mono Boom), CX75SR (Offset Boom) Hydraulic ExcavatorOperating weight:Mono Boom ............................................................................................................................... 7950 kg (17526.73 lbs)Mono Boom (CX80) ........................................................................................................................ 8470 kg (18673 lbs)Offset Boom (CX75SR) .............................................................................................................. 8290 Kg (18276.3 lbs)Engine output ......................................................................................................................................... 40 kW / 1800 rpmPerformanceSwing speed....................................................................................................................................................... 9.5 Tr/min.Travel speed:Low Speed....................................................................................................................................3.3 km/h (2.05 mph)High Speed.................................................................................................................................... 5.1 km/h (3.16 mph)Maximum drawbar pull .................................................................................................................... 59.5 kN (13376.13 lbf)Maximum drawbar pull (CX80)....................................................................................................................... 59.2 kN ( lbf)Grade ability........................................................................................................................................................70% (35)Ground pressure:Mono Boom .................................................................................................. 36 kPa (450 mm (17.72 in) grouser shoe)Offset Boom.................................................................................................. 37 kPa (450 mm (17.72 in) grouser shoe)Main body dimensionsMain body length............................................................................................................................... 3280 mm (129.13 in)Main body length (CX80) .................................................................................................................. 3510 mm (138.18 in)Main body width .................................................................................................................................. 2320 mm (91.34 in)Upper swing body width...................................................................................................................... 2225 mm (87.60 in)Cab width ............................................................................................................................................ 1065 mm (41.93 in)Main body height............................................................................................................................... 2700 mm (106.30 in)Main body height (CX80)1.71 m (Arm)................................................................................................................................. 2700 mm (106.29 in)2.12 m (Arm)................................................................................................................................. 2950 mm (116.14 in)Swing radius (rear end)....................................................................................................................... 1235 mm (48.62 in)Swing radius (rear end), (CX80) ......................................................................................................... 1655 mm (65.15 in)Swing body rear end distance............................................................................................................. 1235 mm (48.62 in)Swing body rear section bottom height ................................................................................................. 745 mm (29.33 in)Distance between tumblers...................................................................................................................... 2210 mm (87 in)Overall track length ................................................................................................................................ 2845 mm (112 in)Overall track width............................................................................................................................... 2320 mm (91.33 in)Distance between tracks ..................................................................................................................... 1870 mm (73.62 in)Width of track shoe .............................................................................. 450 mm (17.72 in), (Optional: 600 mm (23.62 in))Minimum ground clearance (To bottom of lower frame) ........................................................................ 360 mm (14.17 in)EngineName..................................................................................................................................................... ISUZU, AU-4LE2XType: ........................................................................water-cooled, 4-cycle diesel, 4-cylinder in-line, direct injection type............................................................................................. (electronic control), turbocharger with air cooled intercooler.No. of cylinders - bore x stroke................................................................................. 4 - 85 mm x 96 mm (3.35 x 3.78 in)Displacement .................................................................................................................................. 2179 cc (132.98 cu-in)Compression ratio........................................................................................................................................................18.3Rated output ........................................................................................................................................ 40 kW / 2000 min-1 Maximum torque ................................................................................................... 200 N.m (147.51 lb-ft) / 2000rpm min-1Fuel consumption ratio.............................................................................................................................. 240g/KW.h maxEngine dimensions (LxWxH)........................................................................ 757.1x650.7x753.7 mm (29.8 x25.6x29.7 in)Oil pan............................................................................................................................... All direction 0.61 rad, inclinableOil pan capacity........................................................ Maximum: 10.4 L (2.7 gal) Minimum: 7 L (2 gal) (excluding oil filter) Direction of rotation...................................................................................................................... Right (as seen from fan)Starter, reduction type.....................................................................................................................................24 V, 3.2 kWAlternator, AC type............................................................................................................................................. 24 V, 50 ABattery..................................................................................................................................................2 x 12V, 64 Ah/5 HrCopyright Lep SC75SRCX80-1002-0EN Issued 03-081002-12Cooling systemFan type............................................................................................ 650 mm (25.59 in), suction type - 7 blades, intakeRadiatorCapacity .................................................................................................................................................... 5.1L (1.3 gal)Fin type .................................................................................................................................................................. wavyFin pitch ................................................................................................................................................ 2 mm (0.079 in)Oil coolerCapacity ................................................................................................................................................... 4.4 L (1.2 gal)Fin type .................................................................................................................................................................. wavyFin pitch ........................................................................................................................................... 1.75 mm (0.069 in)Inter-coolerCapacity ................................................................................................................................................... 4.1 L (1.1 gal)Fin type .................................................................................................................................................................. wavyFin pitch ........................................................................................................................................... 1.75 mm (0.069 in)Capacity of coolant and lubricantsCoolant ..................................................................................................................................................... 10.2 L (2.70 gal)Fuel ......................................................................................................................................................... 100 L (26.42 gal)Lubricant for engine....................................................................................................................................... 9 L (2.38 gal)Lubricant for travel reduction gear (one side) ............................................................................................. 1.1 L (0.29 gal)Hydraulic oil ............................................................................................................................................ 97.3 L (25.70 gal)Capacity of hydraulic oil tank..................................................................................................................... 50 L (13.21 gal)Air conditioningR134 gas load ..............................................................................................................................................1Kg (2.20 Ibs)Hydraulic oil filterSuction filter (inside tank) ....................................................................................................................................150 meshReturn filter (inside tank) ............................................................................................................................................ 6 mPilot line filter (inside housing).................................................................................................................................... 8 mFuel filterMain filter.................................................................................................................................................................... 4 mPre-filter.................................................................................................................................................................... 10 mOperating devicesOperator's seatLocation: left sideStructure: Adjustable forward and back and up and down, reclining mechanism, with seat suspension.CabSealed steel type, all reinforced glass.Levers and pedalsFor travel use: Lever and pedal type (hydraulic pilot type) (x2)For operating machine use: Lever type (hydraulic pilot type) (x2)For blade use: Lever type (hydraulic pilot type) (x1)For offset-boom operating use (CX75SR)............................................................. Pedal type (hydraulic pilot type) (x1)Instruments and switchesWork mode select switch: 2 modes (N/Standard operating mode, E/Economy operating mode)Travel mode select switch: Low-speed/high-speed switch typeOne-touch idle: Knob switch typeEngine emergency stop: Switch typeMonitor deviceMachine status display (full-dot liquid crystal)Work mode selection status: N/EInstruments (full-dot liquid crystal, except for hour meter) Fuel gauge: AnalogEngine coolant temperature gauge: AnalogHour meter: digital typeMachine Status and Warning Alarms *Items have a warning alarmOver heat* Battery charge* Check engine*Refill fuel* Engine oil pressure* Engine preheatCopyright Lep SC75SRCX80-1002-0EN Issued 03-081002-13LightingOtherWiper with intermittent function, window washer, air conditioner, rear view mirrors, clockHydraulic systemHydraulic pump drive system, direct engine link (no transmission)Main pumpManufacturer ...................................................................................................................................... Bosch RexrothPump type........................................................................................ double variable displacement piston pump x 1Gear pump ...........................................................................................................................................................x 2Gear pump (for blade use) ........................................................................................................................ 24.2 L/minDisplacement volume..................................................................................................34.0 cm3 (2.07 cu in) x 2 /revOperating pressure Rated .................................................................................................... 29.4 MPa (4264.11 psi)Input revolution speed Rated................................................................................................. 2000 min-1 (2000 rpm)Maximum input revolution speed........................................................................................... 2250 min-1 (2250 rpm)Maximum discharge flow........................................................68 x 2 L/min at 2000 min-1 (18 x 2 gpm at 2000 rpm)Pilot pumpPump type................................................................................................................Fixed displacement gear pump Displacement volume ......................................................................................................... 10.7 cm3 (0.65 cu in)/revOperating pressure........................................................................................................................ 4.2 MPa (610 psi)Maximum flow.................................................................................................... 21.4 L/min (5.6 gpm) at 2000 min-1Gear pump (for blade)Pump type................................................................................................................Fixed displacement gear pump Displacement volume .......................................................................................................................... 12.1 cm3 / revOperating pressure.................................................................................................................... 22.6 MPa (3280 psi)Maximum flow.................................................................................................... 24.2 L/min (6.4 gpm) at 2000 min-1Control methodFull hosepower angle control in concurrence.Horsepower control by blade pump operation pressure.Set pressure of main relief valveBoom/Arm/ Bucket/Travel ....................................................................................................29.4 MPa (4264.11 psi)Swing.................................................................................................................................... 22.6 MPa (3277.85 psi)Blade .................................................................................................................................... 22.6 MPa (3277.85 psi)Set pressure of overload relief valveBoom/Arm/ Bucket...............................................................................................................31.9 MPa (4626.70 psi)Blade .................................................................................................................................... 25.5 MPa (3698.46 psi)Control ValveModel; Double spool x 1 Quintuple spool x 2Operation method: hydraulic pilot method: travel, swing, blade and operating machine Maximum flowMono Boom with blade................................................................................... 75.8 L / min (20 gpm) (at 2230 min-1)Offset Boom with blade (CX75SR) .............................................................. 75.2 L / min (19.8 gpm) (at 2320 min-1)Overload set pressureOther:Mono Boom with blade.......................................................................... 31.9 0.3 MPa (4630 44 psi) at 20 L/minOffset Boom with blade (CX75SR) ........................................................ 31.9 0.3 MPa (4630 44 psi) at 20 L/minBoom (CX80):Swing right ........................................................................................ 33.3 0.3 MPa (4830 44 psi) at 20 L/minSwing left .......................................................................................... 31.9 0.3 MPa (4630 44 psi) at 20 L/minBoom up/down (CX75SR)Mono Boom with blade ..................................................................... 25.5 0.3 MPa (3700 44 psi) at 20 L/minOffset Boom with blade..................................................................... 25.5 0.3 MPa (3700 44 psi) at 20 L/minOffset right (CX75SR)Offset Boom with blade..................................................................... 31.9 0.3 MPa (4630 44 psi) at 20 L/minWorking light Cab top: 24V, 55W (x1)Boom up: 24V, 70W (x1)Interior light 24V, 6W (x1)Horn Electric horn x2Copyright Lep SC75SRCX80-1002-0EN Issued 03-081002-14Offset left (CX75SR)Offset Boom with blade..................................................................... 33.3 0.3 MPa (4830 44 psi) at 20 L/minMain relief set pressure................................................................................. 29.4 0.3 MPa (4260 0.4 psi) at 44 L/minFunctionsTravel priorityBoom up / arm 2 pumps internal flowBoom load holding circuitArm-in forced regenerative circuitSwing priority 2 pumps flow is joined at reserve sectionCopyright Lep SC75SRCX80-1002-0EN Issued 03-081002-15Hydraulic CylindersMono boom spec. Offset boom spec.with dozer blade with dozer bladeBoom cylinder Cylinder bore................................................................................. 110 mm (4.33 in)Rod diametre................................................................................... 70 mm (2.75 in)Maximum retracted length...............................................................1408 mm (55.43 in)Stroke ................................................................................................911 mm (35.87 in)Arm (dipper) cylinderCylinder bore................................................................................... 95 mm (3.74 in) ............ 95 mm (3.74 in)Rod diametre................................................................................... 60 mm (2.36 in) ............ 60 mm (2.36 in)Maximum retracted length....................................................................1270 mm (50 in) ............... 240 mm (9.45 in)Stroke ................................................................................................797 mm (31.38 in) ............. 685 mm (26.97 in)Bucket cylinderCylinder bore................................................................................... 85 mm (3.35 in)Rod diametre................................................................................... 55 mm (2.16 in)Maximum retracted length...............................................................1035 mm (40.75 in)Stroke ................................................................................................665 mm (26.18 in)Blade cylinderCylinder bore................................................................................. 100 mm (3.94 in)Rod diametre................................................................................... 60 mm (2.36 in)Maximum retracted length.................................................................530 mm (20.87 in)Stroke ..................................................................................................180 mm (7.09 in)Offset cylinder (CX75SR)Cylinder bore................................................................................... 95 mm (3.74 in)Rod diametre................................................................................... 55 mm (2.16 in)Maximum retracted length..............................................................710 mm (27.95 in)Stroke .............................................................................................315 mm (12.40 in)Boom swing cylinder (CX80)Cylinder bore................................................................................... 95 mm (3.74 in)Rod diametre................................................................................... 55 mm (2.16 in)Maximum retracted length..................................1085 30 mm (42.71 in 1.18 mm)Stroke ................................................................640 2.0 mm (25.19 in 0.078 mm)Copyright Lep SC75SRCX80-1002-0EN Issued 03-081002-16Rotating JointOperating pressureHigh pressure passage (ABCDEF)............................................................................................ 29.4 MPa (4260 psi)Drain port (T) .............................................................................................................................. 0.5 MPa (72.52 psi)Pilot port (P)................................................................................................................................... 3.9 MPa (566 psi)FlowHigh pressure passage (ABCDEF)............................................................................................... 68 L/min (18 gpm)Drain port (T) .................................................................................................................................. 15 L/min (4 gpm)Pilot port (P).................................................................................................................................... 23 L/min (6 gpm)Port A; forward right ................................................................................................................................................G1/2Port B; forward left ..................................................................................................................................................G1/2Port C; backward right.............................................................................................................................................G1/2Port D; backward left ...............................................................................................................................................G1/2Port E; blade up ..................................................................................................................................................... G3/8Port F; blade down..................................................................................................................................................G3/8Port T; drain port .....................................................................................................................................................G3/8Port P; pilot port ......................................................................................................................................................G1/4Number of revolutions....................................................................................................................15 min-1 (15 rpm)Torque:No load ...................................................................................................................................... 160 Nm (1420 lbf.in)When pressurizing 2 ports......................................................................................................... 190 Nm (1480 lbf.in)Solenoid Valve (4 stack)Manufacturer ................................................................................................................................ Yuken kogyo co., LTDMaximum flow............................................................................P -> B: 20 L/min (5.3 gpm) Other: 5 L/min (1.32 gpm)Rated pressure ............................................................................................................................. 4.5 MPa (652.67 psi)Port sizeP, T, B port...........................................................................................................................................................G3/8C1, C2, C3 port...................................................................................................................................................G1/4Solenoid specificationsOperating voltage ................................................................................................................................DC 20 to 32 VPower consumption .................................................................................................................................. 17 W max.Copyright Lep SC75SRCX80-1002-0EN Issued 03-081002-17Hand control valveManufacturer................................................................................................................................................... Kawasaki Operating pressure.......................................................................................................................... 3.92 MPa (569 psi)Secondary pressure, primary short type .......................................................... 0.64 to 2.45 MPa (92.82 to 355.34 psi)Operating anglePorts 1, 3 .............................................................................................................................................................. 19Ports 2, 4 .............................................................................................................................................................. 25Operating torquePorts 1 ................................................................................................................... 0.58 - 2.03 Nm (0.42 - 1.49 (lb-ft)Ports 3 ................................................................................................................... 0.47 - 1.92 Nm (0.34 - 1.41 (lb-ft)Ports 2, 4 ............................................................................................................... 0.71 - 2.30 Nm (0.52 - 1.69 (lb-ft)RST-03-01-001BFoot control valve (for travel)Manufacturer....................................................................................................................................... Nishina industrialOperating pressure.......................................................................................................................... 3.92 MPa (569 psi)Secondary pressure, primary short type .......................................................... 0.64 to 2.45 MPa (92.82 to 355.34 psi)Operating angle ..................................................................................................................................................... 12.4Operating torqueValve....................................................................................................................... 2.62 - 8.58 Nm (1.93 - 6.33 lb-ft)Damper................................................................................................................... 6.87 Nm at 0.018 m/s (60.8 lb-ft) RST-03-01-001D01.02.03.04.02 4 6 70 5 10 15 1901.02.03.04.02 4 6 8 9.420 25 0 5 10 15Port 1, 3 Port 2, 4Push rod stroke (mm)Push rod stroke (mm)Operating angle (deg.) Operating angle (deg.)Secondary pressure (MPa)Secondary pressure (MPa)SecondarypressureSecondarypressure01.02.03.03.92 4 5.50 5 10 12.4Push rod stroke (mm)Operating angle (deg.)Secondary pressure (MPa)SecondarypressureCopyright Lep SC75SRCX80-1002-0EN Issued 03-081002-18Foot control valve (for Dozer Blade)Manufacturer ....................................................................................................................................... Nishina industrial Operating pressure .......................................................................................................................... 3.92 MPa (569 psi)Secondary pressure, primary short type........................................................... 0.64 to 2.45 MPa (92.82 to 355.34 psi)Operating angle......................................................................................................................................................... 10Operating torque ............................................................................................................................See the figure belowPush rod stroke (mm) (in)Operating angle (deg.)Secondary pressure (MPa)SecondarypressureOperating torque (Nm) (lbf-ft)Copyright Lep SC75SRCX80-1002-0EN Issued 03-081002-19Foot control valve (for Offset Boom) (CX75SR)Manufacturer....................................................................................................................................... Nishina industrialOperating pressure.......................................................................................................................... 3.92 MPa (569 psi)Secondary pressure, primary short type .......................................................... 0.64 to 2.45 MPa (92.82 to 355.34 psi)Operating angle ..................................................................................................................................................... 12.4Operating torque............................................................................................................................ See the figure belowPush rod stroke (mm) (in)Operating angle (deg.)Secondary pressure (MPa)SecondarypressureOperating torque (Nm) (lbf-ft)Copyright Lep SC75SRCX80-1002-0EN Issued 03-081002-20Foot control valve (for Boom Swing) (CX80)Manufacturer ....................................................................................................................................... Nishina industrialOperating pressure .......................................................................................................................... 3.92 MPa (570 psi)Secondary pressure, primary short type................................................. 0.59 0.1 to 3.14 0.3MPa (85.6 to 455 psi)Operating angle............................................................................................................................................. 10.0 0.3Operating torque .......................................................................................................2.80 to 5.70 Nm (2.06 to 4.20 psi)Copyright Lep SC75SRCX80-1002-0EN Issued 03-081002-21Swing unitSwing circle........................................................................................................... Swing bearing type (with internal gear) Swing hydraulic motor ..................................................................................................... Fixed displacement piston motorReduction gear....................................................................................................... Planetary gear 2-stage reduction gearSwing parking brake................................................................................ Mechanical lock (operational lever linkage type)Displacement .............................................................................................................................................44.1 cm3 /revOperating pressure........................................................................................................................ 22.6 MPa (3280 psi)Operating flow................................................................................................................................... 68 L/min (18 gpm)Mechanical brake torque ................................................................................................... 174.1 Nm (1540.7 lb-ft) min.Brake off pressure .................................................................................................................4.9 MPa (710.68 psi) maxRelief valve set pressure ....................................................... 22.6 0.3 MPa at 57.5 L/min (3280 44 psi at 15 gpm)Reduction gear....................................................................................................... Planetary gear 2-stage reduction gearReduction ratio.....................................................................................................................................................20.615Travel lower bodyTravel hydraulic motor (x2) ......... Variable displacement piston motor, automatic 2-speed switch-over with parking brakeDisplacement ..................................................................................................................................... 48.0/30.5 cm3/revOperating pressure........................................................................................................................ 29.4 MPa (4260 psi)Operating flow................................................................................................................................ 68.0 L/min (18 gpm)Brake torque ..............................................................................5.54 KNm (40.86 Ib-ft) min. (including reduction gear)Relief valve set pressure...................................................................... 38.25 1.45 MPa at 15 L/min (5550 210 psi)Automatic 2-speed switch-over pressure.......................................................... 23.8 MPa at 3.9 MPa (3450 at 570 psi)Reduction gear....................................................................................................... Planetary gear 2-stage reduction gearReduction ratio.......................................................................................................................................................45.97Travel brake.................................................................................................................................................. Hydraulic lockParking brake ................................................................................................... Mechanical lock (travel lever linkage type)Track shoeModel ........................................................................................................................Assembly type triple grouser shoeNumber of shoes (per side) ........................................................................................................................................39Shoe widthStandard....................................................................................................................................... 450 mm (17.72 in)Optional....................................................................................................................................... 600 mm (23.62 in)Grouser height ...................................................................................................................................... 20 mm (0.79 in)Link pitch............................................................................................................................................. 154 mm (6.06 in)RollerNumber of upper rollers (per side)................................................................................................................................1Number of lower rollers (per side) ................................................................................................................................5Track belt tension adjuster ...............................................................................Grease cylinder type (with cushion spring)Mounting length of spring ................................................................................................................. 402 mm (15.83 in)Copyright Lep SC75SRCX80-1002-0EN Issued 03-081002-22Work UnitModel..................................................................................................................................................Backhoe attachmentComponents / dimensions / working dimensionsCX75SRModel MONO BOOM OFFSET BOOM Boom length 3870 mm (152.36 in)Arm type Standard 1.710 mm(67.32 in)Long 2.120 mm(83.46 in)Standard1.750 mm(68.90 in)Arm (dipper) length1710 mm(67.32 in)2120 mm(83.46 in)1740 mm(68.50 in)Bucket capacityHeaped 0.28 m3 (Leveled 0.20 m3)Heaped 0.22 m3 (Leveled 0.16 m3)Heaped 0.28 m3 (Leveled 0.20 m3)Bucket width 730 mm (28.74 in) 600 mm (23.62 in) 730 mm (28.74 in)Bucket width with side cutter 804 mm (31.65 in) 673 mm (26.50 in) 804 mm (31.65 in)Bucket weight with side cutter 204 kg (449.74 lb) 178 kg (392.42 lb) 204 kg (449.74 lb)Bucket radius 1450 mm (57.08 in) 1050 mm (41.34 in) 1450 mm (57.08 in)Bucket wrist action 177Maximum digging radius6520 mm(256.69 in)6900 mm(271.65 in)6080 mm(239.40 in)Maximum digging radius at ground line6390 mm(251.57 in)6770 mm(266.53 in)6360 mm(250.39 in)Maximum digging depth4140 mm(162.99 in)4540 mm(178.74 in)4190 mm(164.96 in)Maximum vertical straight wall digging radius3640 mm(143.31 in)4100 mm(161.42 in)4580 mm(180.31 in)Maximum digging height7330 mm(288.58 in)7620 mm(300 in)7195 mm(283.27 in)Maximum dump height5250 mm(206.69 in)5540 mm(218.10 in)5150 mm(202.75 in)Minimum swing radius at front1785 mm(70.27 in)2085 mm(82.08 in)2230 mm(87.79 in)Height for minimum swing radius at front5620 mm(221.26 in)5650 mm(222.44 in)5700 mm(224.41 in)Copyright Lep SC75SRCX80-1002-0EN Issued 03-081002-23CX80Model MONO BOOMBoom length 3500 mm (137.79 in)Arm type Standard 1.710 mm(67.32 in)Long 2.120 mm(83.46 in)Arm (dipper) length1710 mm(67.32 in)2120 mm(83.46 in)Bucket capacityHeaped 0.28 m3 (Leveled 0.20 m3)Heaped 0.22 m3 (Leveled 0.16 m3)Bucket width 730 mm (28.74 in) 600 mm (23.62 in)Bucket width with side cutter 804 mm (31.65 in) 673 mm (26.50 in)Bucket weight with side cutter 204 kg (449.74 lb) 178 kg (392.42 lb)Bucket radius 1050 mm (41.34 in) 1050 mm (41.34 in)Bucket wrist angle 177Maximum digging radius7030 mm( 276.77 in)7400 mm(291.33 in)Maximum digging radius at ground line6390 mm(275.19 in)7270 mm(286.21 in)Maximum digging depth4180 mm(164.56 in)4590 mm(180.70 in)Maximum vertical straight wall digging radius3080 mm(121.25 in)3550 mm(139.76 in)Maximum digging height6390 mm(251.57 in)6600 mm(259.84 in)Maximum dump height4390 mm(172.83 in)4600 mm(181.10 in)Minimum swing radius at front2750 mm(108.26 in)2910 mm(114.56 in)Height for minimum swing radius at front5060 mm(199.21 in)5080 mm(199.99 in)Copyright Lep SC75SRCX80-1002-0EN Issued 03-081002-24COMPONENT WEIGHTMajor component weight (CX75SR)Weight (kg) information is approximateSymbol Component Name MONO BOOM SPEC. OFFSET BOOM SPEC.A Operating weight 7952 (17531 lbs) 8292 (18280 lbs)BUppermechanism(includingcoun-terweight and turntable bearing3892 (8580 lbs) 3892 (8580 lbs)C Counterweight 1357 (2991 lbs) 1357 (2991 lbs)DLowermechanism(withstandardgrouser shoe)2801 (6175l bs) 2801 (6175 lbs)E Main Unit Weight 6693 (14755 lbs) 6691 (14751 lbs)F Attachments 1176 (2592 lbs) 1518 (3346 lbs)G Boom (including cylinders) 703 (1549 lbs) 1043 (2299 lbs)HArm(dipper)(includingcylindersand linkage)263 (579 lbs) 266 (586 lbs)I Blade 332 (732 lbs) 332 (732 lbs)AQ29001-001_EU(MONO BOOM) (OFFSET BOOM)Copyright Lep SC75SRCX80-1002-0EN Issued 03-081002-25Major component weight (CX80)Weight (kg) information is approximateSymbol Component NameA Operating weight 8470 (18673 lbs)B Upper mechanism (including counterweight and turntable bearing 4527 (9980 lbs)C Counterweight 1237 (2727 lbs)D Lower mechanism (with standard grouser shoe) 2801 (7175 lbs)E Main Unit Weight 7328 (16155 lbs)F Attachments 1063 (2343 lbs)G Boom (including cylinders) 595 (1311 lbs)H Arm (dipper) (including cylinders and linkage) 262 (577 lbs)I Blade 332 (732 lbs)ACBE DFGH IAS09001-001Copyright Lep SC75SRCX80-1002-0EN Issued 03-081002-26Other component weightEngine ....................................................................................................................................................194 kg (427.6 lbs)Air cleaner ...................................................................................................................................................1.7 kg (3.7 lbs)Hydraulic pump ........................................................................................................................................51.4 kg (113 lbs)Attachment control valveMono Boom with blade............................................................................................................................82 kg (181 lbs)Mono Boom with blade (CX80) ..........................................................................................................85 kg (187.39 lbs)Offset boom with blade (CX75SR) ..........................................................................................................88 kg (194 lbs)Swing unit ..............................................................................................................................................80.0 kg (176.3 lbs)Travel unit ....................................................................................................................................................83 kg (183 lbs)Rotary joint ....................................................................................................................................................40 kg (88 lbs)Solenoid valve (4 stack) (CX80) ..............................................................................................................4.7 kg (10.36 lbs)Solenoid valve (4 stack) (CX75SR) .................................................................................................................5 kg (11 lbs)Hand control valve.....................................................................................................................................1.6 kg (3.52 lbs)Blade control valve ......................................................................................................................................0.7 kg (1.5 lbs)Offset control valve (CX75SR) ....................................................................................................................0.7 kg (1.5 lbs)Foot control valve ......................................................................................................................................4.7 kg (10.4 lbs)Foot control valve (for boom swing) (CX80) ................................................................................................0.7 kg (1.5 lbs)Boom cylinder ...........................................................................................................................................103 kg (227 lbs)Boom swing cylinder (CX80) ..................................................................................................................56 kg (123.45 lbs)Arm (dipper) cylinder (Mono Boom With Dozer Blade)............................................................................78 kg (3172 lbs)Arm (dipper) cylinder (Offset Boom With Dozer Blade) (CX75SR) .............................................................81 kg (179 lbs)Bucket cylinder ............................................................................................................................................51 kg (112 lbs)Blade cylinder............................................................................................................................................... 34 Kg (75 lbs)Offset cylinder (CX75SR) ............................................................................................................................. 41 Kg (90 lbs)Turntable bearing......................................................................................................................................91.6 kg (202 lbs)Counterweight ................................................................................................................................... 1356.4 kg (2990 Ibs)Counterweight (CX80).......................................................................................................................... 1235 kg (2723 Ibs)Muffler .....................................................................................................................................................13.0 kg (28.7 lbs)Radiator total weight....................................................................................................................................50 kg (110 lbs)Oil cooler ................................................................................................................................................12 kg (26.4 lbs)Radiator ...................................................................................................................................................5.4 kg (12 lbs)Air cooler ..................................................................................................................................................4.5 kg (10 lbs)Idler wheel ...............................................................................................................................................45.1 kg (99.4 lbs)Upper roller..................................................................................................................................................4.3 kg (9.5 lbs)Lower roller..............................................................................................................................................13.5 kg (47.1 lbs)Recoil spring assembly ...........................................................................................................................37.3 kg (82.3 lbs)Recoil spring .......................................................................................................................................14.1 kg (31.1 lbs)Grease cylinder assembly.....................................................................................................................8.8 kg (19.4 lbs)Threaded rod ........................................................................................................................................6.3 kg (13.9 lbs)Yoke .........................................................................................................................................................7.7 kg (17 lbs)Track chains (per side)450 mm (17.72 in) ...........................................................................................................................425.4 kg (937.6 lbs)600 mm (23.62 in) .........................................................................................................................479.8 kg (1057.5 lbs)450 mm (17.72 in) Rubber Track.................................................................................................... 424.4 kg (935.4 Ibs)450 mm (17.72 in) Rubber Track (with special core metal) ............................................................ 421.0 Kg (927.9 lbs)Copyright Lep SC75SRCX80-1002-0EN Issued 03-081002-27DIMENSIONS AND WEAR LIMIT OF THE TRACK ASSEMBLYSprocketDimensionsCS01B512GaugeAQ19002-031AMark Dimension (mm)aStandard 35Limit 30 bStandard 480.81Limit 474.91 cStandard 533.61Limit 527.61 dStandard 522.47Limit ---PStandard 154Limit ---P d c ba18548.89 253.9 3.917.117.1153 - 155R 3 to 640.721.682.87015.19012.7R 28.7R 53.8R 20.8Copyright Lep SC75SRCX80-1002-0EN Issued 03-081002-28Idler wheelDimensionsAQ19002-001AGaugeAQ19002-032A abce f dMark Dimension (mm) aStandard 400Limit 369bStandard 28Limit 25cStandard 44Limit 40 d (shaft)Standard 42Limit 41 d (bushing)Standard 42Limit 42.8eStandard 42Limit 41.6fStandard 20Limit 19.51104039 - 4494 - 98102-R36-R538.4103285Copyright Lep SC75SRCX80-1002-0EN Issued 03-081002-29Upper rollerDimensionsAQ19002-002AGaugeMeasure with a slide caliper. a bMark Dimension (mm) aStandard 80Limit 70 b (shaft)Standard 30Limit ---Copyright Lep SC75SRCX80-1002-0EN Issued 03-081002-30Lower rollerDimensionsAQ19002-003AGaugeAQ19002-033A abdf geMark Dimension (mm) Mark Dimension (mm) aStandard 118 e (ring)Standard 40Limit 112 Limit 40.8bStandard 13fStandard 38Limit 11 Limit 37.6dStandard 44gStandard 30.2Limit 40 Limit 29.7 e (shaft)Standard 40Limit 39170150.5 - 151.544R61376.550152-R32-R4 4-R53105.7 - 106.31.5Copyright Lep SC75SRCX80-1002-0EN Issued 03-081002-31TrackAQ19002-004Ac de'f'g'gfeh hbaMark Dimension (mm) Mark Dimension (mm)aStandard 26 e (ring)Standard 41.3Limit 20 Limit 40.3bStandard 74 f (ring)Standard 24.5Limit 71.5 Limit 23.8cStandard 45 g (shaft)Standard 23.8Limit 50 Limit 23.2dStandard 105hStandard 154Limit 100 Limit 150 e' (bushing)Standard 41.26Limit 40.26 f' (bushing)Standard 24.5Limit 25.2 g' (shaft)Standard 24Limit 23Copyright Lep SC75SRCX80-1002-0EN Issued 03-081002-32DIMENSIONS AND WEAR LIMITS OF ATTACHMENT LINKAGES (MONO BOOM) AQ19002-005A1. Boom foot/FrameAQ19002-006A1234567810119abcd eMark Dimension (mm)a (frame)Standard 400Limit 410b (boom)Standard 399Limit 397c (a - b)Standard 1.0 to 3.5Limit Shims d (shaft)Standard 60Limit 59 d (bushing)Standard 60Limit 61.5Copyright Lep SC75SRCX80-1002-0EN Issued 03-081002-332. Boom cylinder foot/FrameAQ19002-007A3. Boom cylinder head/BoomAQ19002-008AMark Dimension (mm)a (frame)Standard 91Limit 92b (cylinder)Standard 90Limit 88c (play)Standard 1.0 to 3.5Limit Shims d (shaft)Standard 65Limit 64 e (bushing)Standard 65Limit 66.5Mark Dimension (mm)a (boom)Standard 91Limit 87b (cylinder)Standard 90Limit 88c (play)Standard 0.5 to 3.5Limit Shims d (shaft)Standard 65Limit 64 d (bushing)Standard 65Limit 66.5dab cedbcaeCopyright Lep SC75SRCX80-1002-0EN Issued 03-081002-344. Dipper cylinder foot/BoomAQ19002-009A5. Boom/DipperAQ19002-010A6. Dipper cylinder head/DipperAQ19002-011AabdceMark Dimension (mm)a (boom)Standard 81Limit 87b (cylinder)Standard 80Limit 78c (a - b)Standard 0.5 to 3.0Limit Shims d (shaft)Standard 55Limit 54 d (bushing)Standard 55Limit 56.5dabcefMark Dimension (mm)a (boom)Standard 184.5Limit 187.5b (dipper)Standard 184Limit 182c (play)Standard 0.5 to 1.1Limit Shims d (shaft)Standard 60Limit 59 e (dipper)Standard 60Limit 61.5 f (boom)Standard 45Limit Refer a and babdceMark Dimension (mm)a (dipper)Standard 81Limit 87b (cylinder)Standard 80Limit 78c (a - b)Standard 0.5 to 3.0Limit Shims d (shaft)Standard 60Limit 59 e (bushing)Standard 60Limit 61.5Copyright Lep SC75SRCX80-1002-0EN Issued 03-081002-357. Bucket cylinder foot/DipperAQ19002-012A8. Connecting rod/DipperAQ19002-013A9. Compensator/BucketAQ19002-014AabdceMark Dimension (mm)a (dipper)Standard 76Limit 82b (cylinder)Standard 75Limit 73c (a - b)Standard 0.5 to 3.0Limit Shims d (shaft)Standard 50Limit 49 e (bushing)Standard 50Limit 51.5abdcaeMark Dimension (mm)a (connecting rod)Standard 25Limit 22b (dipper)Standard 190Limit 188c (play)Standard 1.0 to 1.5Limit Shims d (shaft)Standard 50Limit 49 e (bushing)Standard 50Limit 51.5a bdceMark Dimension (mm)a (bucket)Standard 191Limit 197b (compensator)Standard 190Limit 188c (play)Standard 0.5 to 3.5Limit Shims d (shaft)Standard 50Limit 49 e (bushing)Standard 50Limit 51.5Copyright Lep SC75SRCX80-1002-0EN Issued 03-081002-3610. Connecting rod/Compensator/Bucket cylinder headAQ19002-015A11. Dipper/BucketAQ19002-016Aabgce dfaihgMark Dimension (mm)a (connecting rod)Standard 25Limit 22b (compensator)Standard 190Limit 188c (play)Stand