cat785c d truck

®®

EngineEngine Model Cat® 3512B-EUIGross Power – SAE J1995 1082 kW 1,450 hpNet Power 1005 kW 1,348 hp

Weights – ApproximateGross Machine 249 480 kg 550,000 lbOperating Weight

Operating SpecificationsNominal Payload Capacity 136 tonnes 150 tons

785CMining Truck

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785C Mining TruckEngineered for performance, designed for comfort, built to last.

Top Performance.Developed specifically for high productionmining and construction applications, the785C Mining Truck keeps material movingat high volume to lower your cost-per-ton.

Reliable, Durable Operation.Rugged construction and easy maintenanceprocedures ensure long life with lowoperating costs.

Truck Body Systems

A variety of Caterpillar designedand built truck bodies ensure optimalperformance and reliability in toughmining applications. Cat dealers canhelp build an optimum hauling systemto maximize truck payloads andextend body and truck wear life.pg. 14

Monitoring System

VIMS™ monitoring system providesoperators, service technicians andmanagers with vital machine healthand payload data to keep the 785Cperforming at peak efficiency andtop production levels while loweringcost-per-ton. pg. 12

Engine/Power Train Integration

The Cat Data Link electronicallycombines engine, transmission,brake and operational informationto optimize overall truck performance.Stored diagnostic data can be accessedvia the Cat Electronic Technician(Cat ET) to improve troubleshootingand reduce downtime. pg. 6

Power Train – Transmission

The Cat six-speed power shifttransmission and mechanical powertrain, matched with the electronic unitinjection 3512B engine, providesconsistent power and efficiency forpeak power train performance. pg. 5

Power Train – Engine

The Cat® 3512B engine deliversthe power and reliability necessaryto perform in the most demandingapplications. Designed for efficientoperation, the 3512B offers excellentfuel efficiency, lower emissions,reduced engine noise and loweroperating costs. pg. 4

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Customer Support

Caterpillar dealers provide unmatchedproduct support, anywhere in the world.With industry-best parts availabilityand a wide range of maintenance andservice options, Cat dealers have whatit takes to keep your mining machinesproductive. pg. 17

Safety

Caterpillar sets the standard whenit comes to safety in the design andmanufacturing of heavy equipmentfor the mining industry. Safety is notan afterthought at Caterpillar, but anintegral part of all machine andsystems designs. pg. 18

Serviceability

The 785C is designed for quick andeasy servicing. Simplified service andmaintenance features reduce downtime,allowing the machine to spend less timebeing serviced and more time on thehaul roads. pg. 16

Caterpillar® Brake System

Cat oil-cooled, multiple disc brakesoffer exceptional, fade-resistant brakingand retarding for maximum performanceand productivity in all haul roadconditions. Integrated Braking Controlcombines retarding and traction controlinto one system for optimum brakingefficiency. pg. 10

Operator’s Station

The ergonomic cab is designed foroperator comfort and ease of operation toallow the operator to focus on production.Controls and gauges are positionedwithin easy reach for optimum efficiencyand superior control. pg. 9

Structures

Caterpillar® truck frames are built tooptimize torsional load displacement.Mild steel provides flexibility, durabilityand resistance to impact loads. Castingsand forgings in high stress areas provideexceptional strength and durabilityfor long life. pg. 8

Engine. The Cat® 3512B EUI twinturbocharged and aftercooled dieselengine delivers high power and reliabilityin the world’s most demanding miningapplications.

Design. The 3512B is a 12-cylinder,four-stroke design that uses long, effectivepower strokes for more complete fuelcombustion and optimum fuel efficiency.

EPA Compliant. The 3512B engineis compliant with U.S. EnvironmentalProtection Agency Tier 1 emissionsstandards.

Altitude Compensation. Designed formaximum operating efficiencies ataltitudes under 3048 m (10,000 ft).

High Torque Rise. The 23 percent nettorque rise provides unequalled luggingforce during acceleration, on steepgrades and in rough underfoot conditions.Torque rise effectively matchestransmission shift points for maximumefficiency and fast cycle times.

Enhanced Life. High displacement, lowrpm rating and conservative horsepowerratings mean more time on the haulroads and less time in the shop.

Single-Piece Piston Design. New single-piece forged steel pistons with integratedforged steel skirt are more robust towithstand high engine heat and pressureand enable enhanced combustionefficiency, improved fuel efficiencyand lower emissions. Corrosion resistant,stainless steel top ring reduces ring,groove and liner wear for greaterreliability and longer life.

Electronic Unit Injection (EUI).The electronically controlled unitinjection fuel system senses operatingconditions and regulates fuel deliveryfor optimum fuel efficiency. The provenhigh-pressure fuel system providesimproved response times and moreefficient fuel burn with lower emissionsand less smoke.

Electronic Control Module (ECM).Utilizes advanced engine managementsoftware to monitor, control and protectthe engine utilizing self-diagnosingelectronic sensors. The computerizedsystem senses operating conditions andpower requirements and adjusts enginefor peak performance and most efficientoperation and at all times.

Separate Circuit Aftercooler. Allows theaftercooler circuit to operate cooler thanjacket water temperature for a denser aircharge and greater combustion.

Oil Renewal System. Optional oilrenewal system extends engine oil changeintervals from 500 hours to 4,000 hoursor more to increase machine availabilityand reduce costs.

Engine Protection. Computerized systemelectronically protects the engine duringcold starts, high altitude operation,air filter plugging, and high exhausttemperature.

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Power Train – EngineThe Cat® 3512B EUI twin turbocharged and aftercooled diesel engine delivers high powerand reliability in the world’s most demanding mining applications.

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Mechanical Power Train. The Catmechanical drive power train and powershift transmission provides unmatchedoperating efficiency and control on steepgrades, in poor underfoot conditions, andon haul roads with high rolling resistance.

1) Transmission. The Cat six-speedplanetary power shift transmission ismatched with the direct-injection 3512Bdiesel engine to deliver constant powerover a wide range of operating speeds.

Robust Design. Designed for the higherhorsepower of the 3512B engine, theproven planetary power shift transmissionis built tough for long life betweenoverhauls.

Long Life. A dedicated oil tank andcircuit provides cooler, cleaner oil formaximum performance and longercomponent life.

Transmission Chassis Control (TCC).TCC uses electronically transferredengine rpm data to execute shifts atpreset points for optimum performance,efficiency and clutch life.

2) Lock-Up Torque Converter.Combines maximum rimpull andcushioned shifting of torque converterdrive with the efficiency and performanceof direct drive. Engages at approximately8 km/h (5 mph), delivering more powerto the wheels.

Lock-Up Clutch. Quickly releases andre-engages to reduce power train torqueloads for smoother shifting, long lifeand a more comfortable ride.

Smooth Shifting. Individual clutchmodulation provides smooth clutchengagements to optimize performanceand extend clutch life.

3) Final Drives. Cat final drives work asa system with the planetary power shifttransmission to deliver maximum powerto the ground. Built to withstand theforces of high torque and impact loads,double reduction final drives providehigh torque multiplication to furtherreduce drive train stress.

Steering System. Hydraulic steeringcontrol system is designed forexceptional smoothness and precisecontrol. A separate circuit preventscross contamination for long life.

Supplemental Steering. Supplementalsteering system uses pressure accumulatorsand allows up to three 90-degree turnsin case of engine failure.

Wheels and Rims. Cast rear wheelsand Cat center-mount rims are mountedusing studs and nuts to minimizemaintenance and maximize durability.

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Power Train – TransmissionCat mechanical power train delivers more power to the ground for greater productivityand lower operating costs.

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Electronically combines critical power train components to work more intelligentlyand to optimize overall truck performance.

Engine/Power Train Integration

VIMS MainModule

ET

VIMS

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7

48

3

21

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9

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1 Gauge Cluster Module 2 Message Center Module 3 Integrated Braking Control (IBC) 4 Transmission/Chassis Control (TCC) 5 Brakes 6 Wheel Sensor 7 Transmission 8 CAT Data Link 9 Engine Control Module (ECM) 10 Sensors 11 Electronic Unit Injector (EUI)

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Cat Data Link. Electronically integratesmachine computer systems to optimizeoverall power train performance, increasereliability and component life, andreduce operating costs.

Controlled Throttle Shifting. Regulatesengine rpm during shifting to reducepower train stress and clutch wearby controlling engine speed, torqueconverter lock-up and transmissionclutch engagement for smoother shiftsand longer component life.

Directional Shift Management.Regulates engine speed during directionalshifts to prevent damage caused byhigh-speed directional changes.

Neutral Coast Inhibitor. Preventstransmission from shifting to neutralat speeds above 6.5 km/h (4 mph) toprotect the transmission from operatingwith insufficient lubrication.

Body-up Reverse Neutralizer.Automatically shifts the transmissionto neutral if the hoist lever is activatedwhile transmission is shifted in reverse.

Body-up Shift Inhibitor. Prevents thetransmission from shifting above apre-programmed gear without thebody fully lowered.

Overspeed Protection. The transmissioncontrol electronically senses engineconditions and automatically up-shiftsone gear to prevent overspeeding.If overspeeding occurs in top gear,the lock-up clutch is disengaged.

Programmable Top Gear. Transmissiontop gear maximum can be set using theCat ET service tool to help the operatormaintain speed limits.

Anti-Hunt Function. Minimizes shiftingby not allowing the transmission to upor down shift immediately after a shifthas occurred. This prevents transmissionshifting for increased component life.

Downshift Inhibitor. Prevents engineoverspeeding by keeping the transmissionfrom downshifting until engine speedreaches the downshift point.

Electronic Technician (Cat ET). Cat ETservice tool provides service technicianswith easy access to stored diagnostic datathrough the Cat Data Link to simplifyproblem diagnosis and increasemachine availability.

Diagnostic Capability. Critical data fromthe electronic engine and transmissioncontrols, including transmission shifting,engine speed and fuel consumption,provides service technicians withenhanced diagnostic capability toreduce downtime and operating costs.

Integrated Braking Control (IBC).IBC integrates Automatic RetarderControl and Traction Control intoone system for optimum performanceand efficiency.

Box-Section Design. The 785C frameuses a box-section design, incorporatingtwo forgings and 21 castings in highstress areas with deep penetrating andcontinuous wrap-around welds to resistdamage from twisting loads withoutadding extra weight.

Steel Structures. Mild steel usedthroughout frame provides flexibility,durability and resistance to impactloads, even in cold climates, andallows for easy field repairs.

Castings. Castings have large radii withinternal reinforcing ribs to dissipate stressin areas of high stress concentration.Castings move welds to lower stressareas for greater frame life.

Serviceability. The open box-sectionframe design allows easy access topower train components, reducing overallremoval and installation time, andlowering overall repair costs. The raisedand pinned body allows excellent accessto the transmission.

Integral Four-Post ROPS Cab.Resiliently mounted to the main frameto reduce vibration and sound, theintegral ROPS is designed as an extensionof the truck frame. The ROPS/FOPSstructure provides “five-sided protection”for the operator.

Suspension System. Designed todissipate haul road and loading impactsfor longer frame life and a morecomfortable ride.

Cylinders. Four independent self-contained, oil pneumatic, variable-reboundsuspension cylinders are designed toabsorb shocks in the most severeapplications.

Durable Design. Rugged cylindersutilize large diameter bore and low-pressure nitrogen/oil design for longlife with minimal maintenance.

• Front. Front cylinders with presetcaster and camber are mounted to theframe and serve as steering kingpinsfor a tight turning radius with excellentmaneuverability and low maintenance.

• Rear. Rear cylinders allow axleoscillation and absorb bending andtwisting stresses caused by uneven andrough haul roads rather than transmittingthem to the main frame.

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StructuresRugged Cat structures are the backbone of the 785C mining truck’s durability.

Ergonomic Layout. The 785C operatorstation is ergonomically designed fortotal machine control in a comfortable,productive and safe environment.All controls, levers switches and gaugesare positioned to maximize productivityand minimize operator fatigue.

Quiet Cab. Integral, sound-suppressedROPS/FOPS cab is resiliently mountedto the mainframe to isolate the operatorfrom sound and vibration for a quiet,secure and comfortable ride.

Viewing Area. Designed for excellentall-around visibility and clear sight linesto the haul road, the large viewing areaenables the operator to maneuver withconfidence for high productivity.

1) Air Suspension Seat w/Three-PointOperator Restraint. Ergonomicallydesigned, fully adjustable air suspensionseat with adjustable armrests providesoptimal driving comfort. A wide,retractable three-point seat/shoulder beltprovides a secure, comfortable restraint.

2) Hoist Levers. Four-position, loweffort electronic hoist control systemwith fingertip control is mounted next tothe operator’s seat for ease of operation.

3) Secondary Brake Pedal. Convenientlylocated on the floor for easy operatorcontrol.

4) Monitoring System. The VIMSmonitoring system features an easy-to-read display and easy-to-use operatorinput keypad for precise machine statusinformation.

5) Steering Column. Comfort wheel withtilt and telescoping steering featuresprovide a comfortable driving position.

6) Transmission Console. Ergonomicgearshift lever with backlit gearindicators optimize efficiency.

7) Parking Brake Reset Valve. Parkingbrake cannot be released when airsystem is drained until valve buttonis reset.

8) Storage Compartment. Located underthe trainer seat for a safe, unclutteredworking environment.

9) Trainer Seat. Full-size, fully paddedtrainer seat features a backrest, wide hipand shoulder room, and seat belt forsecure travel. Air-suspension, optional.

10) Operator Window. Powered operatorwindow and sliding trainer seat windowoffer simple operation and anunobstructed view.

11) Operator Controls. Easy to reachturn signal, high beam, intermittentwindshield wiper and windshieldwasher controls are designed foroptimum efficiency and comfort.

12) Heating/Air Conditioning. Efficientdesign provides fresh, pressurized,temperature-controlled air circulationfor a comfortable working environmentin any climate.

13) Radio Ready. Cab is prewiredwith power converter, speakers, wiringharness, antenna and provision foradd-on communication systems.

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Operator’s StationErgonomically designed for operator comfort, superior control and high productivity.

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Integrated Braking System. The Catoil-cooled braking system deliversreliable performance and control inthe most extreme haul road conditions.The integrated system combines theservice, secondary, parking brake andretarding functions in the same robustsystem for optimum braking efficiency.

Cat Data Link. All control modulescommunicate via the Cat Data Link andwork together as an integrated systemto maximize production efficiency andextend component life.

Oil-Cooled Multiple Disc Brakes.Caterpillar four-wheel, forced oil-cooled, multiple disc service brakes arecontinuously cooled by water-to-oilheat exchangers for exceptional, non-fade braking and retarding performance.

Optional Extended Life Disc Brakes.Extended life friction material hasdouble the wear life of standard brakesand is twice as resistant to glazing formore consistent braking power withless noise.

Brake Design. Cat oil-cooled discbrakes are designed with large discsand plates for reliable, adjustment-freeoperation and performance. Brakes arecompletely enclosed and sealed toprevent contamination and reducemaintenance.

Long Life. An oil film prevents directcontact between the discs. This designabsorbs the braking forces by shearingthe oil molecules and carrying heataway to extend brake life.

Pistons. The Caterpillar two-pistondesign combines the service, secondary,parking brake and retarding functionsin the same system. The primary pistonhydraulically actuates both serviceand retarding functions. The secondarypiston is spring-applied and held inthe disengaged position by hydraulicpressure. If hydraulic system pressuredrops below a specified level, thespring-applied secondary pistonautomatically applies the brakes.

Parking Brake. Oil-cooled, spring-applied, hydraulically released parkingbrake is applied to all four wheels forsuperior parking capability on all gradesup to 15 percent.

Hydraulic Automatic Retarder Control(HARC). Hydraulically activatedautomatic retarder control systemelectronically controls retarding ongrade to maintain optimum engine rpmand oil cooling. Additional braking maybe applied using the manual retarder orthe brake pedal. HARC is deactivatedwhen the operator applies the brakesor accelerator controls.

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1 Parking/Secondary Piston 2 Service/Retarding Piston 3 Friction Discs 4 Steel Plates 5 Actuating Springs 6 Cooling Oil In 7 Cooling Oil Out

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Reliable braking with superior control gives the operator the confidence to focuson productivity.

Caterpillar® Brake System

HARC vs. ARC.

• Less chance for engine overspeed

• Smoother engagement

• No loping

• Less demand on air system

• Reduces operating costs

HARC Production Advantages.

Faster Speeds. HARC allows theoperator to maintain optimum enginespeeds for faster downhill hauls andgreater productivity.

Superior Control. Automatic brakemodulation offers a smoother rideand better control in slippery conditions,allowing the operator to concentrateon driving.

Ease of Operation. HARC increasesoperating ease, resulting in greateroperator confidence with less fatigue.

Engine Overspeed Protection.Automatically activates HARC whenengine speed exceeds factory-presetlevels, regardless of operator inputs,to avoid potentially damaging engineoverspeeds.

Four Corner Retarding. Four cornerretarding with 60/40 percent split(rear/front) in braking effort providessuperior control in slippery conditions.Balanced front to rear brake torqueprovides exceptional braking performanceand minimizes wheel lock-up, especiallyduring retarding.

Traction Control System (TCS).Electronically monitors and controlsrear wheel slippage for greater tractionand enhanced truck performance in poorunderfoot conditions. If slippage exceedsa set limit, the oil-cooled disc brakesengage to slow the spinning wheel.Torque is then automatically transferredto the wheel with better traction.

Differential Action. Normal differentialaction provides superior maneuveringand control in slippery conditions.

Integrated Braking Control (IBC).Combines Hydraulic AutomaticRetarder Control (HARC) andTraction Control System (TCS) intoone integrated brake control systemfor optimum efficiency, performanceand reliability.

Fuel Efficiency. The engine providesadditional retarding by runningagainst compression on downhill hauls.During retarding applications the engineECM does not inject fuel into thecylinders for exceptional fuel economy.

10Time (Seconds)

20 30 40 50 60

With Hydraulic Automatic Retarder Control(average speed, 1950 rpm)

With Manual Retarder Control(average speed, 1730 rpm)

Engi

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peed

(rpm

)

700

2500

1500

1000

500

2000

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TCSHARC 1 Service Brake Sensor 2 Engine Sensor 3 HARC 4 HARC Switch 5 Brakes 6 Service Brakes 7 Axle Speed Sensor 8 TCS

VIMS Monitoring System. IntelligentCaterpillar designed machinemonitoring system provides criticalmachine health and payload data inreal-time to keep the 785C performingat top production levels.

Integrated System Monitoring. Sensorslocated throughout the machine systemsenable the VIMS monitoring systemto quickly exchange and monitorinformation from all machine systemsfor efficient, high performance operation.

Advanced Diagnostics. VIMS monitoringsystem simplifies troubleshooting, reducesdowntime and lowers operating costs byidentifying abnormal conditions beforethey cause extensive damage.

Data Access. Monitoring and diagnosticinformation is stored on-board until it canbe downloaded for analysis. Data canbe accessed through the messagecenter, transmitted via optional radioor downloaded onto a computerfor detailed analysis.

Machine Management. Servicetechnicians or mine personnel candownload data and generate reportsfor better machine personnel. Data canbe used to improve effectiveness ofscheduled maintenance programs,maximize component life, improvemachine availability, and loweroperating costs.

Speedometer/Tachometer Module.Monitors three systems: engine speed,ground speed and gear indicator.

Gauge Cluster. Conveniently locatedgauge cluster maintains a constantdisplay of vital machine functions,including:

• engine coolant temperature

• brake oil temperature

• air system pressure

• fuel level

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Vital machine health and payload data keeps the 785C performing at peak production levels.

Monitoring System

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1 Gauge Cluster 2 Message Center and Keypad 3 ADEM™ III Engine Control Module 4 CAT Data Link 5 Action Alarm 6 Action Lamp 7 Payload Lamps 8 Payload Display (optional) 9 Radio System (optional) 10 Data Port (VIMS-PC) 11 Service Lamp 12 Diagnostic Connector (ET) 13 Integrated Brake Control (IBC) Module 14 Transmission/Chassis Control (TCC) Module 15 Road Analysis Control (RAC) Module (optional)

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Keypad. Provides operator or servicetechnician immediate access to currentmachine information, gauge valuesand stored data through the messagecenter display.

Message Center. Displays messagesrequested by operator and advisesoperator of abnormal machine conditions.

Alert System. Three-category warningsystem alerts operator of abnormalmachine health conditions.

• Category I. Machine or system needsattention.

• Category II. Requires operator toevaluate and correct situation beforecontinuing work.

• Category III. Immediate shutdownrequired to prevent serious damageto machine or system.

Data Storage. VIMS monitoring systemstores payload information, which isused to manage production. The systemstores up to 2,400 production cycles fora complete record of payload weight,cycle times, distances and actualdates/times. It also allows storageof maintenance data such as Events,Trends, Histograms, Cumulatives,Snapshot and Dataloggers. This dataallows the user to identify potentialproblems before they occur, utilizingthe efficiency of PreventativeMaintenance.

Production Management. ProductionManagement enhances truck/loadingtool effectiveness, improves fleetproductivity and helps extend the lifeof truck frames, tires, rims and powertrain components, while loweringoperating and maintenance cost.

Payload Management. Max PayloadSpeed Manager is a feature that aidsin managing the Caterpillar 10/10/20Overload Policy. Based on targetpayload weight and overload settings,the VIMS system logs and warns theoperator when the truck reaches overloadafter second gear reweigh. The truck willbe limited to second gear at 1,750 rpm,and the automatic retarder speed settingis reduced to 1,750 rpm until the loadis dumped.

Payload management enables themanager to enhance truck/loading tooleffectiveness and productivity levelsby preventing overloads that can causedamage to component life and affectoperator safety.

The chart below illustrates the benefitof managing payloads with VIMSproduction management tools.

External Payload Indicators. Externallights on both sides of the truck signalsloading tool operator when to ceaseloading for optimum payloads withoutoverloading. Optional external payloaddisplays with digital numeric monitorsare available to replace the standardred/green indicator lamps.

Road Analysis Control (RAC). Optionalsystem monitors haul road conditionsby measuring frame rack and pitch toimprove haul road maintenance, cycletimes, tire life and fuel efficiency.

VIMS-PC. VIMS-PC, the off-boardreporting software program, allowsservice personnel to download acomplete record of machine health andproductivity data to a laptop computerfor diagnosis and analysis. Easy-to-usesoftware enables service techniciansand mine management to generatehealth and payload reports for moreeffective machine management.

VIMS Supervisor. Optional softwareallows mine management to easilymanage and interpret VIMS datafor optimum fleet managementand productivity.

Payload Weight Distribution

Payload Weight (Tons)

Perc

enta

ge o

f Tot

al L

oads

Recommended Payload Range

Inefficient Payload Ranges

With Production Management

Without Production Management

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Cat Truck Bodies. Matching the truckbody to the application is a critical partof achieving the best value from your785. Caterpillar offers five body choicesto achieve the best match.

• Dual Slope Body

• Mine Specific Design (MSD II) Body

• Gateless Coal Body

• Caterpillar “X” Body

• Flat Floor Body

Body/Chassis Integration. Caterpillarengineers have developed the mostcomprehensive suite of dynamicanalysis tools in the industry and designthe body always keeping in mind theinteraction of the body with the rest ofthe Mining Truck System. No one in theindustry today comes close to the levelof analysis and application understandingas Caterpillar.

Caterpillar designs the truck body aspart of the larger Mining Truck Systemcomprised of the Body, Loading Tool andPayload, Chassis, Terrain, Suspension,Wheels and Tires, and Power Train.By controlling the design and manufactureof the entire truck – Caterpillar is ableto design bodies that fit the applicationand also fit the chassis to give optimumload distribution and steering andbraking performance.

Our field population and balance ofpayload and durability are testimonyto these methods.

Electronic Hoist Control. Provides theoperator with better control of the loadwhen dumping, including over-centerload control and modulated controlthroughout the operating range.The automatic body-snubbing featurereduces impact on the frame, hoistcylinders and operator.

Fast Hoist Cycle Times. Two-stage hoistcylinders provide fast dump cycle timesof 15.2 seconds for raise and 16.2 secondsfor lower.

Body Liners. A variety of liner optionsare available to save weight and extendthe body system’s life. Wear surfacesand liners are equipped to handle toughimpact loads while resisting abrasion.Wear plates deliver long life in highwear areas.

Custom Body Options. Tail extensions,sideboards, tumblebars, rock boxes androck shedders are available to maintainrated payload, reduce spillage, andimprove hauling efficiencies.

• Sideboards are designed to maximizeor attain gross machine weight.

• Tail extensions are used to helpretain the rear portion of the pileand limit load spillage on haul roads,extending tire life.

Target Payload Strategy. Achievingtarget payload is essential to meetingcost and tonnage/volume requirements atyour operation. Caterpillar’s exclusive10/10/20 payload guidelines helpachieve a balance of excellent payloadwith safe operation.

The Caterpillar 10/10/20 payloadguidelines take into account the realityof running an operation by allowingoverloads within limits but the guidelinesalso eliminate large overloads that canlead to unsafe operation of the truck.

Body Design. Cat truck bodies aredesigned for optimal strength, capacityand durability. Wear surfaces areequipped to handle even the toughestimpact and abrasion over the long haulwithout diminishing capacity.

• Five-Sided Beams tie in the sidewalland floor junctions add increasedbody rigidity and strength.

• Wide Ribs in body floor provideincreased durability and impactsupport.

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Cat designed and built for rugged performance and reliability in the toughestmining applications.

Truck Body Systems

• Full-Length Stringers create strengthand rigidity throughout the bed.

• Box Section Beams offer increaseddurability in the floor, sidewall, toprail, corner, and cab canopy areas.

1) Dual-Slope Body. The dual-slopebody design with V-shaped floorprovides excellent load retention,maintains a low center of gravity,reduces shock loading, and maintainsoptimum load distribution on steepinclines and in challenging haulroad conditions.

• Reinforced, rolled steel top railincreases body strength and protectsthe body from damage caused by theloading tool or falling material.

• 8 degree “V” reduces shock loadingand centers the load.

• 7.5 degree forward body slope and16 degree ducktail slope helps retainloads on steep grades.

2) Mine Specific Design (MSD II) Body.The Large Mining Truck Body Industryhas focused on maximizing payload vialightweight body programs for the lasteight years. During that time Caterpillarhas been the leading supplier oflightweight bodies, supplying over1500 lightweight bodies in addition tothousands of standard bodies (dual slopeand flat floor bodies). Caterpillar optimizesa system, referred to as the Mine SpecificDesign (MSD) to create a customer/sitespecific body that is designed to maximize

performance via an appropriate sizedbody with the most efficient impact andwear protection. Caterpillar has a varietyof liner offerings that are key contributorsto the MSD process (including Caterpillarpatented products). The tailor madeliner package is as essential to payloadmaximization as it to critical impactand wear protection requirements.

3) Gateless Coal Body. The Gateless CoalBody is an extension of the Caterpillarlightweight body design concept. Thesebodies are designed with large volumesto achieve target payloads in coal miningapplications. The Caterpillar GatelessCoal body eliminates the heavy andmaintenance intensive tailgate with akicked up floor design that gives thevolume required to meet target payloadin coal haulage applications. The canopyon the Gateless Coal Body is designedto minimize the amount of materialrolling onto the canopy during travelloaded. The 785 will have 4 sizesof Gateless Coal Bodies to cover thecoal density range around the world.(Contact Caterpillar Truck Body Groupfor design and shipping availability).

Additional Caterpillar large miningtruck body information:

• MSD II Sales Brochure (AEXQ0015).

• Truck Body Maintenance &Operator Guide (AEDK0627).

• Mining Truck Bodies TechnicalSales Presentation CD (AEXC0613).

4) Caterpillar “X” Body. The CaterpillarX Body is a larger volume body than thedual slope or flat floor body. The addedvolume comes at no extra weight becauseof the design improvements to theCaterpillar X body. The designimprovements include a more robustunderstructure of which, a new bodypivot system and a new generation hoistbracket are included. The sidewall plateterminates on the floor plate and thesidewall and floor ribs are aligned toimprove the structural integrity of thebody. The sidewall ribs are tapered toprovide more flexibility and durability.The Caterpillar X Body design is acombination of everything learned fromthe standard bodies (dual slope and flatfloor) and the new technology of thelightweight body programs.

5) Flat Floor Body. The flat floor designwith slight incline delivers excellentpayload capacity, high dump clearancesand smooth, controlled dumping.

• Flat floor design provides consistentwear characteristics on body tail.

• 12 degree forward body slopeprovides good load retention onbetter-maintained haul roads.

• 400 Brinell steel on surfacesprovides excellent wear.

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Servicing Ease. Easy access to dailyservice points simplifies servicingand reduces time spent on regularmaintenance procedures. Enhancedserviceability and 500-hour serviceintervals are designed to increasemachine availability and productivity.

Maintenance Platform. Provides accessto engine, air filters, steering hydraulictank and battery compartment.

In-Frame Access. Permits easy accessto major components for easy servicingand removal.

Ground-Level Access. Allows convenientservicing to tanks, filters, drains, andengine shutdown. Ground-level VIMSdata port permits easier downloadingof information.

Autolube. Automatic lubricationsystem reduces maintenance time byautomatically lubricating necessarycomponents on a regular basis.

Fast Fill Service Center. OptionalWiggins fast fill service center featureshigh-speed fuel and oil exchange.

Oil Renewal System (ORS). Optionalon-board engine oil management systemis designed to increase availability andproductivity by extending oil changeintervals and reduce oil disposal laborand costs. ORS meters and injects usedengine oil from the crankcase into theengine’s fuel return line. New oil ismanually added as a part of dailymaintenance.

Scheduled Oil Sampling. S•O•SSM

sampling valves speed sampling andanalysis reliability.

Pressure Test Points. Disconnect valvesare conveniently located throughoutthe hydraulic systems for easypressure testing.

Air Filters. Radial seal air filters areeasy to change, reducing time requiredfor air filter maintenance.

Sealed Electrical Connectors. Electricalconnectors are sealed to lock out dustand moisture. Harnesses are braidedfor protection. Wires are color codedfor easy diagnosis and repair.

Cylinder Heads. Individual cylinderheads are interchangeable for easyremoval and visual inspection ofinternal parts.

On-Board Diagnostic Systems.The VIMS monitoring systemcontinuously monitors all criticalmachine functions and componentsto help locate faults quickly for fasterrepair. Electronic Control Systemsprovide diagnosis of engine,transmission, brake and chassissystems. Service Technicians utilizethe Electronic Technician service tool(Cat ET) to program and troubleshootthese systems.

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ServiceabilityLess time spent on maintenance means more time on the haul roads.

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Commitment Makes the Difference.Cat dealers offer a wide range ofsolutions, services and products that helpyou lower costs, enhance productivityand manage your operation moreefficiently. Support goes far beyondparts and service. From the time youselect a piece of Cat equipment untilthe day you rebuild, trade or sell it, thesupport you get from your Cat dealermakes the difference that counts.

Dealer Capability. Cat dealers willprovide the level of support you need, ona global scale. Dealer expert technicianshave the knowledge, experience, trainingand tooling necessary to handle yourrepair and maintenance needs, whenand where you need them.

Product Support. Cat dealers believesuperior products deserve superiorsupport. When Cat products reach thefield, they are supported by a worldwidenetwork of parts distribution facilities,dealer service centers and technicaltraining facilities to keep your equipmentup and running. Cat customers rely onprompt, dependable parts availabilityand expertise through our global dealernetwork, ready to meet your needs 24/7.

Service Support. Every piece ofCat equipment is designed and builtto provide maximum productivityand operating economy throughoutits working life. Cat dealers offer awide range of service plans that willmaximize uptime and return on yourinvestment, including:

• Preventive Maintenance Programs

• Diagnostic Programs, such asScheduled Oil Sampling andTechnical Analysis

• Rebuild and Reman Options

• Customer Support Agreements

Application Awareness. Operating andmaintenance costs are influenced by manyapplication and site-specific factors, suchas: material density, loading position,payload, grades, speeds, haul roaddesign, and maintenance. To optimizetotal cost of ownership and productivity,your Cat dealer can provide you with afundamental understanding of the effectsapplication characteristics and operatingtechniques have on maintenance andoperating costs.

Operation. With today’s complexproducts, equipment operators must havea thorough understanding of machinesystems and operating techniques tomaximize efficiency and profitability.Your Cat dealer can arrange trainingprograms to help operator’s improveproductivity, decrease downtime, reduceoperating costs, enhance safety, andimprove return on the investment youmake in Cat products.

Technology Products. Cat dealers offera range of advanced technology productssuch as VIMS monitoring system andMineStar® information managementsystem. These products include radio datacommunications, machine monitoringand diagnostics, fleet management, andhaul road maintenance software – alldesigned to improve fleet efficiency,increase productivity, and lower costs.

www.cat.com. For more completeinformation on Cat products, dealerservices, and industry solutions, visit uson the web at www.cat.com.

Customer SupportCaterpillar dealers have what it takes to keep mining haul trucks productive.

18

Product Safety. Caterpillar has been andcontinues to be proactive in developingmining machines that meet or exceedsafety standards. Safety is an integralpart of all machine and systems designs.

SAE and ISO Standards. The 789Cis designed to many national andinternational standards.

Integral ROPS Cab. Resiliently mountedto the main frame to reduce vibrationand sound, the integral ROPS structureis designed as an extension of the truckframe. The ROPS/FOPS structureprovides “five-sided protection” forthe operator.

Ladder/Secondary Egress. A wide,stationary ladder with a ladder with astairway that allows easy access to andfrom the machine. The ladder on the rightside of the machine permits secondaryaccess or emergency egress.

Brake Systems. Four corner oil-cooledbraking system provides excellent control.The service brakes and retarding systemare actuated by modulated hydraulicpressure, while secondary and parkingbrake functions are spring applied andhydraulic released. This system assuresbraking in the event of completehydraulic failure.

Steering System. A twin double-actingcylinder steering system is designed todeliver precise control under all loadingand underfoot conditions. The steeringhydraulic system is separate from themain hydraulic system to prevent cross-contamination and overheating fromother sources.

Engine Shutoff Switch. A secondaryengine shutoff switch is located atground level.

Electrical System Disconnect. A batterydisconnect switch, located directly abovethe front bumper, provides ground levellockout of the electrical system.

Overload Policy. Safety is integral tomaintaining the highest productivity inmining machine operation. Caterpillar’s10/10/20 Overload Policy assures thatsteering and braking systems havesufficient capacity to perform, evenat 20 percent overload.

Standard Safety Features.

• Slip resistant surfaces

• Retractable, 75 mm (3 in) wideorange seat/shoulder belts withthree-point operator restraint

• Wide-angle mirrors

• Body raised indicator

• Body retaining cable

• Guard rails

• Reverse neutralizer when dumping

• Low interior sound level

SAFETY.CAT.COM™.

SafetyCaterpillar mining machines and systems are designed with safety as their first priority.

19785C Mining Truck specifications

Transmission

Forward 1 12.1 km/h 7.5 mphForward 2 16.3 km/h 10.2 mphForward 3 22.2 km/h 13.8 mphForward 4 29.9 km/h 18.6 mphForward 5 40.6 km/h 25.2 mphForward 6 54.8 km/h 34 mphForward 7 0 km/h 0 mphReverse 11 km/h 6.8 mph

• Maximum travel speeds with standard 33.00-R51 tires.

Final Drives

Differential Ratio 2.10:1Planetary Ratio 10.83:1Total Reduction Ratio 22.75:1

• Planetary, full-floating.

Suspension

Effective Cylinder Stroke – Front 306.5 mm 12.1 inEffective Cylinder Stroke – Rear 165 mm 6.5 in

Brakes

Brake Surface – Front 61 270 cm2 9,497 in2

Brake Surface – Rear 89 729 cm2 13,908 in2

Standards SAE J1473 OCT90ISO 3450-1985

• Maximum operating weight up to 249 480 kg (550,000 lb).

Body Hoists

Pump Flow – High Idle 750 L/min 198 gal/minRelief Valve Setting – Raise 17 238 kPa 2,500 psiBody Raise Time – High Idle 15.2 SecondsBody Lower Time - High Idle 15.9 SecondsBody Lower Time – Float 16.2 SecondsBody Power Down – High Idle 15.9 Seconds

• Twin, two-stage hydraulic cylinders mounted inside mainframe; double-acting cylinders in second stage.

• Power raise in both stages; power down in second stage.

Engine

Engine Model Cat® 3512B-EUIRated Power 1,750 rpmGross Power – SAE J1995 1082 kW 1,450 hpNet Power – SAE J1349 1005 kW 1,348 hpNet Power 1005 kW 1,348 hpNet Power – Cat 1005 kW 1,348 hpNet Power – ISO 9249 1005 kW 1,348 hpNet Power – 80/1269/EEC 1005 kW 1,348 hpTorque Rise 23%Bore 170 mm 6.7 inStroke 190 mm 7.5 inDisplacement 51.8 L 3,158 in3

• Net power advertised is the power available at rated speedof 1,750 rpm, measured at the flywheel when the engine isequipped with fan, air cleaner, muffler and alternator.

• Ratings based on standard air conditions of 25° C (77° F) and99 kPa (29.32 Hg) dry barometer. Power based on fuel havingAPI gravity of 35 at 16° C (60° F) and an LHV of 42 780 kJ/kg(18,390 BTU/lb) when engine used at 30° C (86° F).

• No engine derating required up to 3050 m (10,000 ft) altitude.

• Complaint with U.S. Environmental Protection Agency Tier 1emissions standards.

Weights – Approximate

Gross Machine Operating Weight 249 480 kg 550,000 lbChassis Weight 74 450 kg 164,134 lbOperating Weight – Empty – 102 150 kg 225,200 lbFlat Floor BodyOperating Weight – Empty – 95 725 kg 211,035 lbDual Slope

Operating Specifications

Nominal Payload Capacity 136 tonnes 150 tonsSAE (2:1) Capacity 78 m3 102 yd3

Top Speed – Loaded 55 km/h 34 mphMaximum Capacity CustomMaximum Capacity Struck (SAE) CustomSteer Angle 36°Turning Diameter – Front 27.5 m 90 ft 2 inRaise Time 15.2 SecondsLower Time 15.9 SecondsMachine Clearance 30.6 m 100 ft 5 inTurning Diameter

• Refer to the Caterpillar Mining Truck 10-10-20 payload policyfor maximum gross machine weight limitations.

20 785C Mining Truck specifications

ROPS

ROPS Standards SAE J1040 APR88ISO 3471:1994

• ROPS (Rollover Protective Structure) for cab offered byCaterpillar meets SAE J1040 APR88 and ISO 3471:1994Level II ROPS criteria.

Sound

Sound Standards ANSI/SAE J1166 MAY90SAE J88 APR95

• The operator sound exposure Leq (equivalent sound pressurelevel) measured according to work cycle proceduresspecified in ANSI/SAE J1166 MAY90 is 80 dB(A) for caboffered by Caterpillar, when properly installed andmaintained and tested with doors and windows closed.

• The exterior sound pressure level for the standard machinemeasured at a distance of 15 m (49 ft) according to the testprocedures specified in SAE J88 APR95, mid-gear movingoperation is 89 dB(A).

• Hearing protection may be needed when operating withan open operator station and cab (when not properlymaintained or doors/windows open) for extended periodsor in a noisy environment.

Steering

Steering Standards SAE J1511 OCT90ISO 5010:1992

• Turning diameter on front wheel track with standard tires:27.5 m (90 ft 2 in).

• Machine clearance turning diameter: 30.6 m (100 ft 5 in).

• Steering angle, left or right: 36 degrees.

• Separate hydraulic system prevents cross contamination.

Tires

Standard Tire 33.00-R51 (E4)33.00-R51 (E3)

• Productive capabilities of the 785C truck are such that,under certain job conditions, TKPH (TMPH) capabilities ofstandard or optional tires could be exceeded and, therefore,limit production.

• Caterpillar recommends the customer evaluate all jobconditions and consult the tire manufacturer for propertire selection.

Approximate Weights – Dual Slope

Gross Weight – Empty 95 725 kg 211,035 lbChassis 74 450 kg 164,134 lbBody 21 258 kg 46,865 lbFront Axle – Empty 47%Rear Axle – Empty 53%Front Axle – Loaded 33%Rear Axle – Loaded 67%

Approximate Weights – Flat Floor

Gross Weight – Empty 102 130 kg 225,200 lbChassis 74 450 kg 164,134 lbBody 25 687 kg 56,630 lbStandard Liner 1996 kg 4,400 lbFront Axle – Empty 47%Rear Axle – Empty 53%Front Axle – Loaded 33%Rear Axle – Loaded 67%

• Percentages represent weight distribution without liner.

Weight Distributions – Approximate

Front Axle – Empty 47%Rear Axle – Empty 53%Front Axle – Loaded 33%Rear Axle – Loaded 67%

Capacity – Dual Slope – 100% fill factor

Struck 57 m3 74 yd3

Heaped (SAE 2:1) 78 m3 102 yd3

Capacity – Flat Floor – 100% fill factor

Struck 74 m3 96 yd3

Heaped (SAE 2:1) 91 m3 119 yd3

Service Refill Capacities

Fuel Tank 1893 L 500 galCooling System 379 L 100 galCrankcase 204 L 54 galDifferentials and Final Drives 436 L 115 galSteering Tank 90 L 24 galSteering System (Includes Tank) 117 L 31 galBrake/Hoist Hydraulic Tank 337 L 89 galBrake/Hoist System (Includes Tank) 641 L 169 galTorque Converter/Transmission 248 L 65.51 galSystem (Includes Sump)


DimensionsAll dimensions are approximate.

1 Height to Top of ROPS 5122 mm 16 ft 10 in2 Overall Body Length 10 615 mm 34 ft 10 in3 Inside Body Length 7652 mm 25 ft 2 in4 Overall Length 11 024 mm 36 ft 3 in5 Wheelbase 5182 mm 17 ft 0 in6 Rear Axle to Tail 3410 mm 11 ft 3 in7 Ground Clearance 987 mm 3 ft 3 in8 Dump Clearance 1284 mm 4 ft 3 in9 Loading Height – Empty 4968 mm 16 ft 4 in

10 Rear Sidewall Height 906 mm 3 ft 0 in11 Inside Body Depth – Max 2132 mm 7 ft 0 in

12 Overall Height – Body Raised 11 207 mm 36 ft 10 in13 Operating Width 6640 mm 21 ft 10 in14 Centerline Front Tire Width 4850 mm 15 ft 11 in15 Engine Guard Clearance 1057 mm 3 ft 6 in16 Overall Canopy Width 6200 mm 20 ft 5 in17 Outside Body Width 5890 mm 19 ft 4 in18 Inside Body Width 5510 mm 18 ft 1 in19 Front Canopy Height 5769 mm 19 ft 0 in20 Rear Axle Clearance 1080 mm 3 ft 7 in21 Centerline Rear Dual Tire Width 4285 mm 14 ft 1 in22 Overall Tire Width 6274 mm 20 ft 8 in

20

21

22

19

16

17

18

15

14

13

11

3

7

5 6

1

4

8

10

9

12

2


To determine retarding performance: Add lengths of alldownhill segments and, using this total, refer to properretarding chart. Read from gross weight down to the percenteffective grade. Effective grade equals actual % grade minus1% for each 10 kg/t (20 lb/ton) of rolling resistance. From thisweight-effective grade point, read horizontally to the curvewith the highest obtainable gear, then down to maximumdescent speed brakes can properly handle without exceeding

cooling capacity. The following charts are based on theseconditions: 32° C (90° F) ambient temperature, at sea level,with 33.00-R51 tires.

NOTE: Select the proper gear to maintain engine rpm at the highestpossible level, without overspeeding the engine. If cooling oiloverheats, reduce ground speed to allow transmission to shift tothe next lower speed range.

Retarding Performance

0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 km/h

mph

kg x 1000

5th Gear

2nd Gear

6th Gear

1st Gear

4th Gear

3rd Gear

LE

E

FFEC

TIVE

GRA

DE

(Fav

orab

le)

Gross Weight

lb x 1000

25%

5%

10%

15%

20%30%

SPEEDContinuous Grade Length

0 50 100 150 200 250 300

Gross Machine Operating Weight249 500 kg/550,000 lb

Typical Field Empty Weight

0 100 200 300 400 500 600

0 5 10 15 20 25 30 35 40 45 50



0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 km/h

mph

kg x 1000

5th Gear

2nd Gear

6th Gear

1st Gear

4th Gear

3rd Gear

LE

EFFE

CTIV

E G

RAD

E (F

avor

able

)

Gross Weightlb x 1000

25%

5%

10%

15%

20%30%

SPEEDGrade Distance — 450 m (1500 ft.)

0 50 100 150 200 250 300



0 100 200 300 400 500 600

0 5 10 15 20 25 30 35 40 45 50

0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 km/h

mph

kg x 1000

5th Gear

2nd Gear

6th Gear

1st Gear

4th Gear

3rd Gear

LE

EFFE

CTIV

E G

RAD

E (F

avor

able

)


25%

5%

10%

15%

20%30%


0 50 100 150 200 250 300



0 100 200 300 400 500 600

0 5 10 15 20 25 30 35 40 45 50



0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 km/h

mph

kg x 1000

5th Gear

2nd Gear

6th Gear

1st Gear

4th Gear

3rd Gear

LE

EFFE

CTIV

E G

RAD

E (F

avor

able

)


25%

5%

10%

15%

20%30%

SPEED Grade Distance — 900 m (3000 ft.)

0 50 100 150 200 250 300


Typical Field Weight

0 100 200 300 400 500 600

0 5 10 15 20 25 30 35 40 45 50

0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 km/h

mph

kg x 1000

5th Gear

2nd Gear

6th Gear

1st Gear

4th Gear

3rd Gear

LE

EFFE

CTIV

E G

RAD

E (F

avor

able

)Gross Weight

lb x 1000

25%

5%

10%

15%

20%30%


0 50 100 150 200 250 300



0 100 200 300 400 500 600

0 5 10 15 20 25 30 35 40 45 50


To determine gradeability performance: Read from grossweight down to the percent of total resistance. Total resistanceequals actual percent grade plus 1% for each 10 kg/t (20 lb/ton)of rolling resistance. From this weight-resistance point, read

horizontally to the curve with the highest obtainable gear, thendown to maximum speed. Usable rimpull will depend upontraction available and weight on drive wheels.

Gradeability/Speed/Rimpull


136 080 kg (300,000 lb) Load

mph

km/h

33.00-R51 TiresGross Weight

70 100 150 200 300 400 600 lb x 1000

90

70

50

40

30

20

15

10

5

3

2

1

200

100

50

20

10

5

2

0 5 10 15 20 25 30 35 40 45 50

0 10 20 30 40 50 60 70 80

SPEED

RIM

PULL

TOTA

L RE

SIST

AN

CE(G

rade

plu

s Ro

lling

)

5 15 25 35 45 55 65 75

20 30 40 50 70 100 150 200 300 kg x 1000

1st Gear

1st Gear

2nd Gear

3rd Gear

4th Gear

5th Gear

6th Gear

4%

6%

8%

10%

15%

LE

20%

25%30%

2%

kg x1000

lb x1000

Torque Converter Drive

Direct Drive

Standard EquipmentStandard equipment may vary. Consult your Caterpillar dealer for details.

Crankcase ProtectionDriveline Operator Safety GuardDumping, Auxiliary Quick Connect for “Buddy Dumping”Electrical System, 24-volt to 12-voltEngine – Caterpillar 3512B with Electronic Injection and

Multi Point Oil Pressure SensingFast-fill Fuel System, WigginsGround Level

Battery DisconnectEngine ShutdownVIMS Dataport

Lighting SystemBack-up Lights, HalogenDirection Signals and Hazard Warning (Rear Halogen)Headlights, Halogen, With DimmerLH Ladder Light and Service Deck LightsStop and Tail Lights (LED)Under-hood Light

Oil Change System, Quick ServiceReservoirs (Separate)

Brake/converter/hoistSteeringTransmission

Rims, Center Mounted for 33.00-R51 TiresRock EjectorsStarting Aid, Ether, AutomaticSteering, Auxiliary Quick Connect for TowingTie Down EyesTow Hooks, FrontTow Pin, RearTraction Control SystemTransmission, Six-speed, Automatic Power Shift, Electronic

Control and Downshift Inhibitor, Reverse Neutralizer duringDumping, and Neutral Start Switch, Reverse Shift Inhibitor,Controlled Throttle Shifting, Directional Shift Management,Neutral Coast Inhibitor, Body-up Shift Inhibitor

Vandalism Protection LocksVital Information Management System with True Weight

Production Manager

Air Cleaner with Precleaner (2)Air ConditionerAir Line Dryer (2)Air Starter, Vane-typeAlarm, Back-upAlternator (105-amp)Automatic Retarder ControlBatteries, 93-amp-hour, Low-maintenance, 12-volt (2)Body Mounting GroupBody Prop CableBrake Release Motor for TowingBrake System

Oil-cooled, Multiple-disc, Front and RearParkingSecondary, Emergency

Cab, ROPSAshtrayCigarette LighterCoat HookDiagnostic ConnectorElectric Window (Operator Only)Entertainment Radio ReadyGlass, TintedHeater/defroster: 11 070 kCal (43,930 Btu)HornInsulated and Sound SuppressedLight, Dome/courtesyMirrors, Right and LeftQuad-Gauge Panel

Air PressureBrake Oil TemperatureCoolant TemperatureFuel Level

Seat, Air SuspensionSeat, Passenger, Non-suspensionSeat Belts, 75 mm (3") wide retractableSpeedometerSteering, Automatic SupplementalSteering Wheel, Tilt, Padded, TelescopicStorage CompartmentSun VisorTachometerTransmission Gear IndicatorVIMS Dataports (2)VIMS KeypadVIMS Message Center with Universal GaugeWindshield Wiper and Washer



Optional EquipmentWith approximate changes in operating weights.Optional equipment may vary. Consult your Caterpillar Dealer for specifics.

kg lb

Bodies see chart below

Body extensions:

Tail 665 1465

Sideboards1 798 1760

Body heat (exhaust) 36 80

Body and tail extension liners2

Full-length liner 7633 16,828

Tail extension liner3 338 745

Grid liner4 1145 2525

Fuel tank 2500 L (660 gal.) 209 460

Heater, fuelrecirculation type, non-electric 2 5

kg lb

Heater, engine coolant and oil120-volt external power source 2 5

Heater, engine coolant and oil240-volt external power source 10 22

Oil Renewal System 11 25

Prelube system 24 53

Rim, spare for 33.00-R51 tire 889 1960

Shutter group, inside mounted 265 585

Starting system

Air (TDI Turbine) –5 –10

Air (IR Turbine) –17 –37

Variable pitch fan, Flexxaire 273 600

Variable speed fan, Rockford 182 4001 Increases capacity to 91 m3/119 yd3

2 Minimum yield strength 900 mPa/9000 Bar/130,500 psi; 400 Brinell steel3 Use with full liners when tail extension used4 Covers rear third of body only

Flat Floor Dual Slopekg lb kg lb

Empty Chassis Weight 55 421 122,180 55 421 122,180

Fuel Tank and Fuel 1892 L (500 gal.) 2232 4920 2232 4920

Tires (33.00-R51) 10 492 23,130 10 492 23,130Rims 610 mm (24 in.) 6323 13,940 6323 13,940

Chassis Weight 74 468 164,170 74 468 164,170

Debris Allowance (4% of chassis) 2979 6567 2979 6567

Body Weight 25 687 56,630 21 258 46,865

Body Attachments Weight 1996 4400 0 0

Additional Attachments Weight +0000 +0000 +0000 +0000

Total Empty Operating Weight 105 129 231,767 98 704 217,602

Target Payload 144 351 318,233 150 776 332,398

Gross Machine Operating Weight 249 480 550,000 249 480 550,000

*Note: Refer to Caterpillar’s 10/10/20 Payload Policy for calculating maximum gross machine weight allowable.

Weight/Payload Calculation*(Example)

R

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

© 2007 CaterpillarAll Rights Reserved

Printed in U.S.A.

Materials and specifications are subject to change without notice.Featured machines in photos may include additional equipment.

See your Caterpillar 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.

AEHQ5320-03 (12-07)

Replaces AEHQ5320-02

785C Mining Truck

cat785c d truck

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