Specalog for 631G/637G Wheel Tractor-Scrapers, AEHQ6043

631G/637GWheel Tractor-Scrapers

EngineTractor Engine Cat C18 ACERT™Scraper Engine Cat C9 ACERTTractor EngineNet Power 345/373 kW 462/500 hp

Scraper EngineNet Power 198/211 kW 266/283 hpScraper BowlCapacity Heaped 26 m3 34 yd3

Rated Load 37 285 kg 82,200 lb

2

Quick loading, high travel speeds and the ability to load and dump on the run yield fast cycle times, allowing Cat Wheel Tractor-Scrapers to consistently deliver high productivity at the lowest cost per ton.

Features

Economical Hauling SystemThe wheel tractor-scraper, with its ability to load quickly, haul at high speeds and dump on the go, has the potential to be the most profitable hauling system on the job site. This efficiency can result in fewer machines on the job, reduced operating costs and jobs delivered in a shorter period of time.

Power TrainCaterpillar designed and manufactured power train components deliver the power necessary for fast loading and quick hauls. Dual power ratings increase component life in gears 1-2 and deliver maximum productivity in gears 3-8.

Operator StationSingle joystick control of implements, adjustable arm rests, seat, steering column and room to maneuver all reduce fatigue and increase operator comfort and productivity throughout the shift.

Cushion HitchCushion hitch is a Cat proven system for improving ride quality, dampening loads that might otherwise be carried through the frame to the operator. Cushion hitch offers operators a more comfortable haul portion of the work cycle.

DurabilityCat® 631G and 637G wheel tractor-scrapers have a history of robust structural design, tested and validated to last in the most rugged loading and hauling conditions.

ContentsOperator Station ..................................................3

Power Train – Engine .........................................4

Power Train – Transmission ..............................5

Electronic Controls .............................................6

Cushion Hitch.......................................................7

Scraper Bowl .......................................................8

Coal Bowl .............................................................9

Push-Pull (637G) ................................................10

Support ...............................................................11

Serviceability .....................................................12

631G/637G Wheel Tractor-Scrapers Specifications ....................................................13

631G/637G Standard Equipment .....................19

631G/637G Optional Equipment .......................20

Notes ...................................................................21

3

Operator StationRedesigned for enhanced operator comfort and productivity

Operator Comfort• Ergonomiclayoutwithplentyofroomtowork

• Fatiguefightinglow-effortcontrolswithconvenientauto-kickoutsanddetents

• AirsuspensionCatComfortSeatadjustsandrotatesformorecomfortableloading

• Enginespeedlockmaintainsenginespeedwithoutusingacceleratorpedal

• Airconditioning,heat,radioreadyarestandard

Productivity• Excellentvisibilitytobail,cuttingedgeandbowlfor

bestloadingperformance

• Transmissionholdmaintainsgearselectionforoptimum loading

• Dualthrottlepedalsforindependentfrontandrearenginecontrol

• Singlejoystickcontrolreplacesthreeimplementlevers

• Differentiallockimprovestractionduringloading,reducingtireslipandwear

• Hydraulicretardingforbrakingongrades

Safety• Handrailsstrategicallyplacedforthreepoints

of contact

• Seatadjustsforbestvisibilityandaccesstocontrols;integratedseatbelt

• ROPS/FOPSintegratedintocabstructure

• Frontandrearwindshieldwipers

• Optionalsecondarysteeringhelpsmaneuverthemachinewhenprimarysteeringisdown

• Fourbrakingsystems:primary,secondary,parkingandhydraulicretarding(optional)

Instruments• 1)Bowl(up/down),2)Ejector(forward/back),3)Thumb

rockerswitch,apron,4)Transmissionhold,5)Cushionhitch,Triggerswitch(notshown)bailcontrol

• Simplegaugeclusteriseasytoread

• 637Gdashcandisplayeitherfrontorrearenginedata

• Backlitswitchesarecloseathand,andmessagingalertstechniciansandoperatortoserviceneeds

4

Power Train – EngineHeavy duty diesel technology for performance and efficiency

ACERT™ Technology• U.S.EPATier3,EUStageIIIAemissionscompliant

• Controlledcombustionusingprovensystems,likecrossflowcylinderheadsforcleanair,bettercirculation

• Rateshapingmanagesemissionsinthecombustioncycle,deliveringfuelattherighttimeandpressure

Cat C18 Engine – Tractor• Excellentpowerdensity,loadresponseacrossthecurve

• MEUImatchesinjectiontimingandquantitytoload.Highcompressionimprovescoldstart,performance.

Cat C9 Engine – Scraper• Strongerblockandheadthanpreviousmodels

• Coolant,oilflowdesignimprovescoolingfordurability

• Leakfreetechnologyeliminatesmetal-on-metalsealing

• Articulatedtwo-piecepistonwithforgedsteelcrownimprovesthermalstabilityandstrength

• Forgedsteelcrankshaft,inductionhardenedfilletsandjournalforgreaterdurability

• ADEM™A4ECMcoldstartstrategyprotectstheengine,reduceswhitesmokeandwarmuptime

• Automaticaltitudecompensation

• MEUIimprovescombustionwithfuelatomization

Electronic Control Module (ECM)Optimizemachineperformancewithadvancedenginemanagement

• Dualpowerdeliverstorqueconverterdrive(gears1-2),andhigherpowerforquickacceleration(gears3-8)

• Controlthrottleshiftingsynchronizestransmissionandenginespeedsduringgearshifts,reducingpowertrainstressforlongercomponentlife,smoothershifts

• Automaticetherinjectionduringenginecrankingensuresreliableenginestart-upinextremecold

• Directionalshiftmanagementengagesspeedclutchesbeforedirectionalclutches,reducingpowertrainwear

• Raisesrpmduringidletomaintainbatterycharge

Engine Speed LockHoldsasetenginespeedwithoutacceleratorpedal

5

Power Train – TransmissionIntegrated electronics monitor the power train extending component life

Planetary Powershift Transmission Is Electronically Controlled• Tractorgears1-2–converterdriveforincreasedtorque,gears3-8–direct-drivefordrivetrain

efficiency.Scrapergearsuseconverterdriveformoretorqueinthecut.

• TransmissionHoldmaintainsconverterdriveformaxrimpull,orholdscurrentgearforbestcontrol

• ProgrammableTopGearmanuallysetstopgearavailable(3rd-8th)tomatchconditionsorspeed

• NeutralCoastInhibitorpreventstransmissionshiftsintoneutralwhilemoving

• HydraulicRetarder(optional)reducesservicebrakewearandenhancesmachinecontrol

Final Drives• Outboard-mounted,planetarydesignreducestorqueloads

• Double-rowrollerbearingsandDuo-Cone™sealsassurereliability

• DifferentialLockimprovestractioninslipperyconditions,reducingtirewear

Brake Performance• Widebrakeshoesandbrakedrumsimprovebrakeperformanceandreducebrakeanddrumwear

• Separatefrontandrearcircuits.Secondarybrakesengageautomaticallyif servicepressuredrops.

• ParkingBrakefeaturesaspring-applied,air-releasedmechanismthatoperatestheservicebrakes

6

Electronic ControlsOptimized machine performance and advanced diagnostic capabilities

Benefits of Electronic Control Modules (ECMs)ECMs(3onthetractor,2onrear-poweredscrapers)offer:

• Betterfueleconomybyoptimizingenginesettings

• Greaterreliabilitywithoperatorwarningsif problems arise

• Combiningtractorandrearpowered-scrapermonitoringsystems(637G),easyaccessdiagnostics,moredurablecomponentsimprovesserviceability

• Reducedexhaustsmokebyoptimizingthefuel/airratioduringcranking,startingandacceleration

• Airfilterrestrictionindicatoralertsoperatorif filterexceedsallowablelimit

• Periodicallyraisesenginerpmduringlowidletokeepthebatteriesfullycharged

Combined Electronic Monitoring System (EMS III)Monitorsboththetractorandscraperstatusonthe637G;accessfaultcodesfromonelocation.Thetractorandpoweredscraperusethesamecontrollerforpartscommonalityandeasierservicing.

Product Link ReadyThiswirelesssystemletsthecustomertracklocation,servicemeterhoursandmachinehealthinformation.Canalsoissuealertsif themachineisoperatedbeyondownerdefinedtimeandlocationlimits.

Easy Access Diagnostics Means Faster Problem SolvingDiagnosticcodes,viatheElectronicTechnician(CatET),andaradiocallcanoftenlettheservicetechnicianknowwhichtools,manuals,andpossiblyevenreplacementpartsto bring.

7

Cushion HitchSuperior design and construction delivers long term durability

Cushion HitchTheelectronicallyactuatedcushionhitchhasaparallelogram-typelinkageforexceptionalstrengthwith nitrogenaccumulator(4)andfree-floatingpiston(8)todeliverasmoothrideforenhancedoperatorcomfort.

• controlledoilflow(6)dampensreboundoscillation

• levelingvalve(7)appliespressureviaanorifice(5)toautomaticallycenterpistoninloadcylinder (1)forallloads

• steelcastingsareusedtoeliminatemanyweldedjointsandincreasestrength

• double-kingboltdesign(2and3)withstandshighexternalforcesandsimplifiesinstallationand removal

Lockout SwitchAnoperator-selectablelockoutswitch,locatedonthejoystick,locksthecushionhitchforimprovedcontrolofthecuttingedgeduringloadinganddumping.

Nitrogen AccumulatorVerticallymountedhydrauliccylindertransfersroadshockstothenitrogenaccumulator.Nitrogen accumulatorabsorbsanddampensroadshocks,thuspreventingtheloadsfrombeingtransmittedtotheoperator.

8

Scraper BowlDesigned for fast and precise loading and controlled ejection

Redesigned Bowl With Low Profile DesignExcellentproductivitywitha26m³(34yd³)bowlandalowprofiledesignofferslessresistancetoincomingmaterials,whilecellularconstructionaddsstrengthanddentresistancetobowlsidesandfloor.

Bulldozer Ejection SystemCombinesconstantspreadingcontrolwithminimumcarryback.Anavailablespillguardontheejectorhelpsretain materialandlimitsspillsontotherearofthescraper.

Push-LoadingFormaximumproductivity,the631GshouldbepushloadedbyaD9orD10Track-TypeTractor.

Cutting Edges and Cat Ground Engaging Tools (GET)Maybeadjustedaccordingtojobconditions.Formostefficientloading,usethethinnestcuttingedgethatprovidessatisfactorywearlifeandimpactresistance.

Tandem Engines (637G), Dual HorsepowerThe637Gofferstwinengineperformancetoensureadequatepowertohandlesteepgrades,andallwheeldriveforsoft,slipperyunderfootconditions.Dualhorsepowerdeliversincreasedpowerduringthehaul,whichresultsinfastercycle times.

Material AppetiteWellsuitedtohandleawidevarietyofmaterialfromclayto shotrock.

9

Coal BowlPurpose-built to meet application specific needs

Dual Engines and All-Wheel-DriveDualengineCoalBowlScrapersachievemaximumpayloadsanddeliverfastcycletimes.Withall-wheeldrive,themachinecanworkeffectivelyinpoorunderfootconditionsandclimbpilesofslippery,loosecoal.

Greater Bowl CapacityCoalBowlsarelongerandhigherthanstandardscraperbowls,givinga637Gacapacityof38 m³(50yd³).

Compaction CapabilityWiththeirrubbertires,wheeltractor-scrapersmakeexcellentcoalpilecompactors,mitigatingthetroublecausedbyexcessiveairspaceinthecoalpile.Compactionisfurtherassistedbythemachine’sabilitytoplacethecoalinthinlayers.

Reclaiming Coal from the StockpileWhenthetimecomestotapreservecoalpiles,nothinghaulslargequantitiesmoreefficientlythana wheeltractor-scraper.It’sareliablehaulingsolutionforquickcoalpilemanagement,ensuringcoalis whereitneedstobetokeeptheplantrunning.

Building the Coal StockpileWithall-wheeldriveperformance,awheeltractor-scrapercandotheworkofbuildingthepile,and supplyingitfromthereceivingareawithfastcyclesandthelowestcostperton.

10

Push-Pull (637G)A self-loading arrangement

Combined Power Increases ProductionTheleadmachineentersthecutandispushedbythetrailing machine.Whenmachine2beginsitsloadcycle,machine1pullsit.

Balanced, Flexible FleetFewermachinesandlessinvestmentthancomparableself-loadingorpush-loadingsystems.

Hydraulically Actuated BailThepush-pullarrangementusesahydraulicallyactuatedbailandcushionedplateboltedtothefrontofthetractor,andahookthatisattachedtotherearofthescraper.

11

SupportCat Dealer services

Product SupportYouwillfindnearlyallpartsatyourdealerpartscounter.Catdealersuseaworld-widecomputernetworktofindin-stockpartstominimizemachinedowntime.SavemoneywithgenuineCatRemanparts.Youreceivethesamewarrantyandreliabilityasnewproductsatsubstantialcostsavings.

OperationBetteroperatingtechniquescanhelpmaximizeyourmachineinvestment.Catdealershaveresourcesto helpimproveproductivity,andCaterpillarofferscertifiedoperatortrainingclassesonmostmachines.

Machine SelectionComparemachinesunderconsiderationbeforepurchase.Catdealerscanestimatecomponentlife,preventivemaintenancecost,andthetruecostoflostproduction.

PurchaseConsiderfinancingoptionsaswellasday-to-dayoperatingcosts.Lookatdealerservicesthatcanbeincludedinthecostofthemachinetoyieldlowerequipmentowningandoperatingcostsovertime.

Maintenance Services and Customer Support AgreementsTalktoyourdealerabouttherangeofavailablemaintenanceserviceslikeS·O·SSMAnalysisandCoolantSampling.Repairoptionprogramsguaranteethecostofrepairsupfront.Catdealersofferavarietyofproductsupportagreementsthatcanmeetcustomers’specificneeds.Theseplanscancovertheentiremachine,includingattachments,tohelpprotectyourinvestment.

Repair, Rebuild, or Replace?YourCatdealercanhelpyouevaluatethecostinvolvedsoyoucanmaketherightchoice.

12

ServiceabilityEasy to Maintain – Easy to Service

Engine Service Points• Maintenance/servicepointsgroupedontherightside

• Groupingfluidfillandcheckpoints,filtersandsamplingportsshortensmaintenancetimes

• ElectronicMonitoringSystem(EMS)providesreal-timeinformationtotheoperatorofsystemwarnings

• ElectronicTechnician(CatET)displaysreal-timesystemdatatobetterinformtheservicetechnician

Implement Valve RelocationTheimplementvalveisrelocatedfromthetractortothetopofthescraperdrafttube,reducingthenumberofhosesandtubescrossingoverthegooseneck.Thisreducespotentialleakpointsandimprovesserviceaccess.

Scraper Electrical Harness and One Piece Power BlockTheflexibleribbonwiringharnessoscillateswiththemachine,andpolyurethanebootsofferbetterprotectionagainsttheelements.The jump-startreceptacleanddisconnectswitchareintegratedintoaone-piecepowerblock,withalockablecover,forbetterelectricalintegrityandserviceability.

Electro-Hydraulic Implement Control Simplifies ServiceabilityRemovingthecabpilotvalveandassociatedlinesimprovesreliabilityandreducesnoise.Thehighefficiencyelectro-hydraulicpilotoilfilterprovidescleaneroilforthepilotsystem.

13

631G/637G Wheel Tractor-Scrapers Specifications

Engine

TractorEngine CatC18ACERT™

ScraperEngine CatC9ACERT

Tractor Engine

NetPower 345/373kW

462/500hp

GrossPower–Gears1-2

364kW 488hp


392kW 526hp

NetPower–Gears1-2

345kW 462hp

NetPower–Gears3-8

373kW 500hp

Bore 145mm 5.7in

Stroke 183mm 7.2in

Displacement 18L 1,078in3

•Netpoweradvertisedisthepoweravailableatratedspeedof1,800rpm,measuredattheflywheelwhentheengineisequippedwithfan,aircleaner,mufflerandalternator.

Scraper Engine

NetPower 198/211kW

266/283hp

GrossPower–Gear1

213kW 286hp


226kW 303hp

NetPower–Gear1 198kW 266hp

NetPower–Gears2-4

211kW 283hp

Bore 112mm 4.4in

Stroke 149mm 5.9in

Displacement 8.8L 538in3

•Netpoweradvertisedisthepoweravailableatratedspeedof2,200rpm,measuredattheflywheelwhentheengineisequippedwithfan,aircleaner,mufflerandalternator.

Scraper Bowl

CapacityHeaped 26m3 34yd3

RatedLoad 37285kg 82,200lb

CapacityStruck 18.3m3 24yd3

DepthofCut–max. 426mm 16.8in

WidthofCut,to RouterBits

3512mm 138.3in

GroundClearance –max.

533mm 21in

CuttingEdge–thickness

28mm 1.12in

Hyd.PenetrationForce–631G

255kN 57,375lb

Hyd.PenetrationForce–637G

360kN 81,000lb

DepthofSpread–max.

545mm 21.4in

ApronOpening 2007mm 79in

ApronClosureForce 170kN 38,250lb

Transmission

1Forward 5.4km/h 3.4mph

2Forward 9.7km/h 6mph



5Forward 22.5km/h 14mph




Reverse 9.8km/h 6.1mph

Hydraulics

BowlCylinderBore 184mm 7.2in

BowlCylinderStoke 873mm 34.4in

ApronCylinderBore 210mm 8.2in

ApronCylinderStroke

727mm 28.6in

EjectorCylinderBore

210mm 8.2in

EjectorCylinderStroke

1880mm 74in

SteeringCircuit 379L/min

100gal/min

ScraperCircuit 344L/min 91gal/min

CushionHitchCircuit

27L/min 7gal/min

SecondarySteeringCircuit

389L/min

103gal/min

Relief Valve–SteeringCircuit

13500kPa 1,958psi

Relief Valve–ImplementCircuit

15000kPa 2,176psi

CompensatorSetting –CushionHitchCircuit

16000kPa 2,320psi

•Flowratesmeasuredat1,900rpm•Supplementalsteeringmeasuredat24km/h

(14.9mph)

Steering

Width–180°Turn 12.2m 40ft

SteeringAngle–right

90°

SteeringAngle–left

90°

•SteeringsystemmeetsISO5010:1992andSAEJ1511:FEB94uptomaximumtotalmachineweightof65 000kg(143,300 lb)forstandardmachinewithoptionalsecondarysteeringinstalled.

•Steeringcircuitat1,900rpm

14


Service Refill Capacities – Tractor

Crankcase 65L 17gal

Transmission 90L 24gal

Differential 138L 36gal

FinalDrive(perside) 21L 5.5gal

CoolingSystem 90L 24gal

HydraulicReservoir 274L 72gal

WheelCoolant(each)

75L 19.8gal

WindshieldWasher 6L 1.5gal

Service Refill Capacities – Scraper

FuelTank–637G 1268L 335gal

Crankcase 30L 7gal

Transmission 51L 13gal

Differential 27L 7.1gal

FinalDrive(perside) 23L 6.1gal

WheelCoolant(each)

75L 19.8gal

CoolingSystem 58L 15gal

Weights – Standard, tandem

TotalShipping 50943kg 112,310lb

TractorShipping 30597kg 67,454lb

ScraperShipping 20346kg 44,856lb

TotalOperating–empty

51963kg 114,559lb

FrontAxle 30690kg 67,661lb

RearAxle 21273kg 46,898lb

TotalOperating–loaded

88976kg 196,159lb

FrontAxleWeight–loaded

44295kg 97,653lb

RearAxleWeight–loaded

44682kg 98,506lb

Weights – Push-Pull

TotalShipping 53037kg 116,926lb

TractorShipping 32570kg 71,804lb

ScraperShipping 20467kg 45,123lb

TotalOperating–empty

54057kg 119,175lb

FrontAxle 32663kg 72,010lb

RearAxle 21394kg 47,165lb

TotalOperating–loaded

91070kg 200,775lb

FrontAxle–loaded 46268kg 112,002lb

RearAxle–loaded 44803kg 98,773lb

Standards

Cab

•RolloverProtectiveStructure(ROPS)meetsISO3471:1994-1997

•FallingObjectProtectiveStructure(FOPS)meetsISO3449:1992LevelII

•TheoperatorsoundexposureLeq(equivalentsoundpressurelevel)measuredaccordingtotheproceduresspecifiedinISO6394:1998islessthan80dB(A)forthecabofferedbyCat,whenproperlyinstalledandmaintainedandtestedwiththedoorsandwindowsclosed.

•Hearingprotectionmaybeneededwhenoperatingwithanopenoperatorstationandcab(whennotproperlymaintainedordoors/windowsopen)forextendedperiodsorinnoisyenvironments.

•StandardairconditioningsystemcontainsenvironmentallyfriendlyR134arefrigerant.

15

Dimensions All dimensions are approximate.

mm in 1 Width – overall machine 3938 155

2 Width – tractor 3500 138

3 Width – rear tire center lines 2464 97

4 Width – inside of bowl 3405 134

5 Width – outside rear tires 3636 143.2

6 Height – overall shipping 4286 168.8

7 Height – top of cab 3682 145

8 Ground clearance, tractor 662 26.1

9 Front of tractor to front axle 3490 137.4

10 Axle to vertical hitch pin 548 21.6

11 Height – scraper blade maximum 545 21.5

12 Wheelbase 8768 345

13 Length – overall machine 14 708 579

14 Rear axle to rear of machine 2450 96.5

15 Bail length – maximum (push-pull) 1651 65

16 Extended push block (push-pull) 2729 107

1 2 3 4 5

637G

67

15 9 12

10

14

8

13

11

16

11

76

9 12 14

13

631G

1 2 3 4 5 10

8

16


Weights (approximate)

Model 631G 637G 637G Standard Push-Pull

kg lb kg lb kg lb Shipping, with ROPS cab and 10% fuel

Front axle 65% 60% 61%

30 578 67,413 30 597 67,454 32 570 71,804

Rear axle 35% 40% 39%

16 368 36,086 20 346 44,856 20 467 45,123

Total 100% 46 947 103,499 50 943 112,310 53 037 116,926

Operating empty, with ROPS cab, full fuel tanks and operator Front axle 64% 59% 60%

30 672 37,620 30 690 67,661 32 663 72,010

Rear axle 36% 41% 40%

16 956 37,382 21 273 46,898 21 394 47,165

Total 100% 47 628 105,002 51 963 114,559 54 057 119,175

Loaded, based on a rated load of 37 013 kg (81,600 lb) Front axle 52% 50% 50%

42 276 97,612 44 295 97,653 46 268 112,002

Rear axle 48% 50% 50%

40 365 88,990 44 682 98,506 44 803 98,773

Total 100% 84 641 186,602 88 976 196,159 91 070 200,775

Transmission

km/h mph Forward

1 5.4 3.4

2 9.7 6.0

3 12.4 7.7

4 16.8 10.4

5 22.5 14.0

6 30.4 18.9

7 39.9 24.8

8 51.7 32.1

Reverse 9.8 6.1

17

E L3

4

5

6

78

75 100 125 150 175

30 40 50 60 70 80

30%

22%

16%

10%

5%

1%

0 5 10 15 20 25 30 35 40 45 50 55 60

0 5 10 15 20 25 30 350 5 10 15 20 25 30 35 40 45 50 55

30 40 50 60 80 100 120 160 200

655545

35

2520

15

108

6

4

2

12

0 5 10 15 20 25 30 35

30%25%20%

15%12%10%8%

6%5%4%

3%

2%

605040302015 70 90

5

10

15

20

30

4050

70

100120150

E L

1

2

3

45

67

8

Gradeability/Speed/Rimpull Retarding

To determine gradeability performance: Read from gross weight down to the percent of total resistance. Total resistance equals actual percent grade plus 1% for each 9 kg/t (20 lb/ton) of rolling resistance. From this weight-resistance point, read horizontally to the curve with the highest obtainable gear, then down to maximum speed. Usable rimpull will depend upon traction available and weight on drive wheels.

To determine retarding performance: Read from gross weight down to the percent effective grade. (Effective grade equals actual percent grade minus 1% for each 9 kg/t (20 lb/ton) of rolling resistance). From this weight-effective grade point, read horizontally to the curve with the highest obtainable speed range, then down to maximum descent speed the retarder can properly handle.

631G Gross Weight 631G Retarding37.25R35 Tires Gross Weight

lb x 1000

kg x 1000

lb x 1000 lb x 1000

kg x 1000 kg x 1000

Rim

pull

Tota

l Res

ista

nce

(Gra

de p

lus

Rolli

ng R

esis

tanc

e)

Effe

ctiv

e G

rade

(Gra

de m

inus

Rol

ling

Resi

stan

ce)

km/h

km/h mph

mph Speed

Speed

1 – 1st Gear Torque Converter Drive E – Empty 46 475 kg (102,460 lb) 3 – 3rd Gear Direct Drive E – Empty 46 475 kg (102,460 lb)2 – 2nd Gear Torque Converter Drive L – Loaded 83 760 kg (184,660 lb) 4 – 4th Gear Direct Drive L – Loaded 83 760 kg (184,660 lb)3 – 3rd Gear Direct Drive 5 – 5th Gear Direct Drive4 – 4th Gear Direct Drive 6 – 6th Gear Direct Drive5 – 5th Gear Direct Drive 7 – 7th Gear Direct Drive6 – 6th Gear Direct Drive 8 – 8th Gear Direct Drive7 – 7th Gear Direct Drive

8 – 8th Gear Direct Drive

18


50 100 150 200 250 300

0 5 10 15 20 25 30 35 40 45 50 55 60

0 5 10 15 20 25 30 35

E L

3 4

56

78

35 55 75 95 115 135

30%

25%

20%

15%

10%

1%

5%

30 40 50 60 80 100 120 160 200

655545

35

2520

15

108

6

4

2

12

5

10

20

50

100

150

0 5 10 15 20 25 30 35

30%25%20%

15%12%10%8%

6%5%4%

3%

2%

605040302015 70 90

15

30

40

70

120 1

2

45

6

7

8

E L

0 5 10 15 20 25 30 35 40 45 50 55

3

Gradeability/Speed/Rimpull Retarding

To determine gradeability performance: Read from gross weight down to the percent of total resistance. Total resistance equals actual percent grade plus 1% for each 9 kg/t (20 lb/ton) of rolling resistance. From this weight-resistance point, read horizontally to the curve with the highest obtainable gear, then down to maximum speed. Usable rimpull will depend upon traction available and weight on drive wheels.

To determine retarding performance: Read from gross weight down to the percent effective grade. (Effective grade equals actual percent grade minus 1% for each 9 kg/t (20 lb/ton) of rolling resistance). From this weight-effective grade point, read horizontally to the curve with the highest obtainable speed range, then down to maximum descent speed the retarder can properly handle.

637G Gross Weight 637G Retarding37.25R35 Tires Gross Weight

lb x 1000

kg x 1000

lb x 1000 lb x 1000

kg x 1000 kg x 1000

Rim

pull

Tota

l Res

ista

nce

(Gra

de p

lus

Rolli

ng R

esis

tanc

e)

Effe

ctiv

e G

rade

(Gra

de m

inus

Rol

ling

Resi

stan

ce)

km/h

km/h mph

mph Speed

Speed

1 – 1st Gear Torque Converter Drive E – Empty 52 047 kg (114,745 lb) 3 – 3rd Gear Direct Drive E – Empty 52 047 kg (114,745 lb)2 – 2nd Gear Torque Converter Drive L – Loaded 89 332 kg (196,944 lb) 4 – 4th Gear Direct Drive L – Loaded 89 332 kg (196,944 lb)3 – 3rd Gear Direct Drive 5 – 5th Gear Direct Drive4 – 4th Gear Direct Drive 6 – 6th Gear Direct Drive5 – 5th Gear Direct Drive 7 – 7th Gear Direct Drive6 – 6th Gear Direct Drive 8 – 8th Gear Direct Drive7 – 7th Gear Direct Drive

8 – 8th Gear Direct Drive

19

631G/637G Standard Equipment

ELECTRICALAlarm,backupAlternator,80amp–tractorengineAlternator,35amp–scraperengine(637G)Batteries(4),12VMaintenanceFree,High Output,tractor

Batteries(2),12VMaintenanceFree,High Output,scraper(637G)

ElectricalSystem,24VLightingSystem–TractorDirectionalSignals;HazardLights;Headlights,halogenwithdimmer;Floodlight,cuttingedge

LightingSystem–ScraperDirectionalSignals;HazardLights;Stop/Tail

StartingReceptacle–tractor,scraperLights,sidevision

OPERATORENVIRONMENTAirConditioner(heater,defroster)DiagnosticConnectionPort(12V)DomeCourtesyLightFan,DefrosterGaugeGroupAirPressure,Converter/RetarderTemperature,ElectronicMonitoringSystem(EMSIII),EngineCoolantTemperature,Actual TransmissionGearIndicator,Fuel, Speedometer,Tachometer,Transmission GearIndicator

HornImplementControlJoystickRearviewMirrorsRadioReady(twobays,speakers,5-ampconverter)

ROPSCabwithSoundSuppressionand Pressurization

StaticSeatbeltScraperEngineControls(637G)

Seat,AirSuspension,CatComfort,clothSteeringWheel–tiltandtelescopingStorageCompartmentEngineSpeedControlLockTransmissionHoldWindows–slidingside,swingoutWindshield–laminatedglassWindshieldWiper/Washer–frontandrear

POWERTRAINEngineElectronicUnitInjection(EUI)Electricstart,24VFan,suctionGroundlevelengineshutdownHeaters,enginecoolant,120V,tractorHeaters,enginecoolant,120V,scraper(637G)MufflerStartingAid,etherThermo-shield,laminatedTractor:CatC18withACERT™Technology6cylinderdiesel,MEUI(MechanicalElectronicUnitInjection)

AirCleaner,dry-typewithprecleanerGuard,crankcaseRadiator,NGMR(9finsperinch)Retarder,hydraulic(637Gonly)Scraper(637G):CatC9withACERTtechnology6cylinderdiesel,MEUI(MechanicalElectronicUnitInjection)

Radiator,brazedaluminumcore,compositetanks(9finsperinch)

BrakingSystemParking/Primary/SecondaryShields–brakeTransmission

Tractor:8-speedautomaticPowershiftwith ElectronicControl

ControlthrottleshiftingDifferential–lockupDownshiftinhibitorNeutralcoastinhibitorProgrammabletop-gearselectionScraper(637G):4-speedAutomaticPowershiftwith ElectronicControl

OTHERSTANDARDEQUIPMENTExtendedLifeCoolant,–36°C(–33°F)Fanhub,permanentlubeFastoilchangeFendersRims–35in(2)Tires,37.50-R35radialTractor:AirdryerCushionhitchGuard,powertrainLocks,vandalism(oilfill,dipstick)ProductLinkreadyTowPins–frontandrearScraper:AirinletheaterBatteries,Heavy-DutyCrankcaseGuard,Heavy-DutyFuelSystem,fastfillRims–35inch(2)Tires,37.50-R35radialTractor:AirdryerCushionhitchLocks,vandalism(oilfill,dipstick)ProductLinkreadyTowPins–frontandrear

Standard equipment may vary. Consult your Cat dealer for details.

20

631G/637G Optional Equipment

631G

Fenders,scraper 121 266Retarder,hydraulic(631Gonly)

150 330

Steering,secondary 50 110

637G

Push-pullarrangement(scraper)

489 1,078

Retarder,hydraulic(tractor)

150 330

Retarder,hydraulic(scraper)

154 340

Steering,secondary 50 110

kg lb kg lb kg lb

Optional equipment may vary. Consult your Cat dealer for details.

21

Notes

22

Notes

24

631G/637G Wheel Tractor-Scrapers

For more complete information on Cat products, dealer services, and industry solutions, visit us on the web at www.cat.com

© 2010 Caterpillar Inc.All rights reserved

Materials and specifications are subject to change without notice. Featured machines in photos may include additional equipment. See your Cat dealer for available options.

CAT, CATERPILLAR, SAFETY.CAT.COM, their respective logos, “Caterpillar Yellow” and the “Power Edge” trade dress, as well as corporate and product identity used herein, are trademarks of Caterpillar and may not be used without permission.

AEHQ6043 (09-2010)Replaces AEHQ5651-01

Specalog for 631G/637G Wheel Tractor-Scrapers, AEHQ6043

Documents

Transcript of Specalog for 631G/637G Wheel Tractor-Scrapers, AEHQ6043