® ® Engine Engine Model Caterpillar 3408E Gross Power 386 kW 518 hp Flywheel Power 363 kW 487 hp Weights Gross Machine Weight 75 700 kg 166,500 lb Operating Specifications SAE (2:1) Capacity 27.5 m 3 36 yd 3 Nominal Payload 41 tonnes 45 tons 771D Quarry Truck
28
Embed
Specalog for 771D Quarry Truck, AEHQ5441-02 · 2021. 2. 23. · Caterpillar truck frames are built for severe applications. Mild steel provides flexibility, durability and resistance
This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.
Transcript
®®
EngineEngine Model Caterpillar 3408EGross Power 386 kW 518 hpFlywheel Power 363 kW 487 hp
771D Quarry TruckEngineered for performance, designed for comfort and built to last.
Top Performance.The 771D is designed for high productionand low cost-per-ton hauling in quarryapplications.
Reliable, durable operation.Rugged construction and easy maintenancecan help extend life with low operating costs.
Operator Station
Controls and gauges are positioned tomaximize productivity and comfort.The cab includes air suspension seatand advanced electronic monitoringsystem. Adjustable telescoping steeringcolumn, electric wipers, window andbody controls reduce operator effortand simplify control. pg. 14
Engine/Power Train Integration
The Caterpillar Data Link Systemelectronically combines engine,transmission, brake and operationalinformation to optimize overall truckperformance. The Electronic Technician(ET) accesses stored diagnostic data,significantly reducing downtime. pg. 8
Power Train - Transmission
The Cat® six-speed, power shifttransmission, matched with the direct-injection 3408E diesel engine providesconstant power over a wide range ofoperating speeds. pg. 6
Power Train - Engine
The power train features the Caterpillar®
3408E Diesel engine and AdvancedModular Cooling System for efficientoperation. pg. 4
Truck Body - Flat Floor
The flat floor body incorporates boxbeam and full-length stringer design forextended life. The flat floor body designhelps quarry trucks achieve rated payloadand provides an optimum match withCaterpillar Loaders. pg. 13
✔ New Feature
3
Serviceability/Total Customer Support
Easy serviceability access, QuickEvacTM
system, on- and off-board diagnostics,machine management service, worldwideparts availability and literature supportrepresents the Caterpillar commitmentto customer support. pg. 16
✔
Systems/Applications
Numerous options and a systemapproach to match the 771D to themost appropriate loader meets customerneeds for various applications. pg. 18
Structures
Caterpillar truck frames are built forsevere applications. Mild steel providesflexibility, durability and resistance toimpact loads. Castings and forgings inhigh stress areas of the frame providegreat structural strength. pg. 12
IBC integrates the optional AutomaticRetarder Control and Traction ControlSystem (TCS) into one system toenhance truck performance andproductivity and improve operatorconfidence. pg. 11
Cat 3408E Diesel Engine. The four-stroke design uses long power strokesfor more complete fuel combustion andoptimum efficiency. Large displacementand a low speed rating can help extendengine life. This engine meets U.S.Environmental Protection Agency Tier 2emissions regulations and Stage II EUEmissions Directive 97/68/EC.
Torque Rise. The 27 percent torquerise provides high lugging force duringacceleration on grade or in high rimpullconditions. The torque rise effectivelymatches the transmission shift points toprovide maximum efficiency and fastercycle times.
Engine.
1) Turbocharger
2) Electronic Control Module (ECM)
3) Valve Rotators
4) Stellite-Faced Valves
5) Steel-Backed, Copper-BondedBearings
6) Oil Cooler
7) Forged Crankshaft
8) Adjustment-Free Fuel Injection Pump
9) Hydraulic Electronic Unit Injectors
10) Forged Steel Pistons
11) Full-Length, Water-CooledCylinder Liners
Engine Features. Contributing to the3408E power and reliability are:
• High pressure injection
• Full electronic control, one pieceforged steel pistons with three ringscooled by oil spray
• Copper-bonded crankshaft bearings
• Hardened crankshaft journals
• Dry-type radial seal air cleaners withprimary and secondary elements andprecleaner
Power Train - EngineThe eight cylinder, turbocharged and air-to-air aftercooled HEUI engine is built for power, reliability and economy with reduced sound levels and low emissions.
4
8
5
6
3
2
10
7
9
1
11
Hydraulic Electronic Unit Injector (HEUI).The HEUI is a proven high-pressure,direct injection fuel system. This systemelectronically monitors operator andmachine inputs to optimize engineperformance. HEUI is unique in itsability to independently control injectionpressure over the entire engine operatingrange. This allows complete control overinjection timing, duration, performanceand efficiency. Rate shaping technologymodifies the heat release characteristicsof the combustion process for significantdecreases in sound and emission levels.Exhaust smoke is significantly reducedthrough precise, electronic control offueling limits and injection timing ofthe HEUI.
Electronic Control Module (ECM).The ECM monitors key functions andlogs critical indicators. The ElectronicTechnician can access this diagnosticinformation for easier maintenanceand repair.
Advanced Modular Cooling System(AMOCS). Is a Caterpillar exclusivetechnology which improves serviceabilityand reduces downtime. It utilizes anexclusive two pass cooling systemand increased cooling surface areato provide significantly more coolingcapacity than conventional systems.
System Operation. The two pass systemcirculates coolant from the sectionedbottom tank up through one side of thecooling element and down through theother side returning it to the bottom tank.
AMOCS Design. The cooling elementsare individual core modules, with brasstube construction within each core, thatare connected to a sectioned bottomtank. There is no top tank to remove.Each core module can be replacedindividually (without removing theentire radiator), saving considerablecost and repair time. And with ninesteel fins per inch, fin bendingresistance is improved.
5
Transmission. The Cat six-speed, powershift transmission, matched with thedirect-injection 3408E diesel engineprovides constant power over a widerange of operating speeds.
Transmission Features. Include:
• Six speeds forward, one reverse
• Torque converter driven reverse
• First gear has both torque converterdrive and direct drive
• Second through sixth gear aredirect drive
• Single-lever shift control providesautomatic shifting in all gears up tothe one selected by the control lever
• Each shift is individually modulatedfor maximum smoothness
• Separate hydraulic circuit with cooler
• Electronic control has built-indiagnostics and fault code memory,event memory and programmablefeatures
• Control throttle shifting
• Economy shift mode
6
Power Train - TransmissionThe Cat six-speed, power shift transmission gets the job done smoothly and quickly.
3
2 4
1
1) Lock-up Torque Converter. Combinesthe maximum rimpull and cushionedshifting of torque converter drivewith the efficiency and performanceof direct drive.
• Engages at approximately 6.9 km/h(4.3 mph), delivering more powerto the wheels.
• Lock-up clutch quickly releases andre-engages during shifts, maintainingpower wind-up, improving transmissionlife and increasing operator comfort.
2) Planetary Power Shift Transmission.Utilizes a modulating pressure valve toregulate clutch pressure rise and fall toease clutch engagement. This reducesshock loads on power train components.Features include:
• Large diameter clutches and robustplanetary gears and bearings.
• Patented rotating clutch pressure sealsminimize drag losses and improvereliability.
• 35 percent gear splits between allgears match Cat engine design foroptimum use of engine power withminimized shifting and torqueconverter use.
3) Final Drive. Final drive anddifferential torque multiplication of13.15:1 further reduces stress on thedrive train.
4) Sump. Transmission and torqueconverter share a common sump.The combined sump offers an easilyaccessible fill tube and sight gauges.
Axles. Full floating axles are shot-peened to relieve internal stresses andincrease durability. Rolled splines alsoprovide increased service life.
Wheels and Rims. Cast rear wheelsand Cat center-mount rims are mountedusing studs and nuts to minimizemaintenance and maximize durability.
Transmission Chassis Controller (TCC).TCC uses electronically transferredengine rpm data to execute shifts atpreset points for optimum performanceand efficiency. This integration allows:
• Programmable top gear limit
• Control throttle shifting
• Directional shift management
• Neutral coast inhibitor
• Economy shift mode
Integration. The Caterpillar powertrain integration provides increasedcomponent life and operator comfort.
7
Integration.
1) Electronic Technician
2) Cat Data Link System
3) Engine Control Module
4) Engine
5) Transmission Chassis Control
6) Automatic Retarder Control, TractionControl System and Integrated BrakeController
7) Caterpillar Electronic MonitoringSystem
8) Transmission
9) Oil-cooled Brakes
Cat Data Link. The Cat Data Linkelectronically integrates the machine’scomputer systems, which allowscommunications and provides thefollowing benefits:
• Controlled Throttle Shifting. Enginerpm is regulated during a shift toreduce driveline stress for smoothershifts and longer component life.
• Economy Shift Mode. Modifies enginemaps, resulting in improved fuelconsumption.
• Directional Shift Management.Regulates engine speed duringdirectional shifts to prevent damagecaused by high speed directionalchanges.
8
Engine/Power Train IntegrationCombining the electronic Engine Control Module (ECM) with the Caterpillar Transmission ChassisController (TCC) allows critical power train components to work more intelligently.
3
4
1
2
7
6
58
9
Elevated Idle Neutral Coast Inhibitor.Helps prevent the transmission fromshifting to neutral at speeds above6.5 km/h (4 mph).
Body-up Shift Inhibitor. Helps preventthe transmission from shifting above apre-programmed gear without the bodyfully lowered.
Event Memory. Records machinemanagement data that can be accessedusing the Electronic Technician.Recorded information includes:
• Shift histograms
• Operator-induced events
• Lock-up clutch counter
• Machine overspeed
• Transmission overspeed
Electronic Technician (ET). The electronicengine and transmission controls provideexhaustive diagnostic capability forservice technicians. The ability to storeboth active and intermittent indicatorswill simplify problem diagnosis andtotal repair time, resulting in improvedmechanical availability and loweroperating cost.
ET accesses data stored in the engineand transmission controls via the CatData Link System.
ET displays the status of all engineparameters including throttle position,timing and fuel flow.
ET replaces 13 mechanical tools toperform functions like cylinder cutoutchecks, injector solenoid tests andtiming calibration.
Caterpillar Electronic MonitoringSystem (CEMS). CEMS allows theoperator to view requested informationand utilizes a three-category warningsystem to alert the operator to abnormalmachine conditions.
Optional Attachments. Caterpillar offersoptional attachments that integrate withthe Cat Data Link System.
• Automatic Retarder Control (ARC).Works with other electroniccomponents to automatically controlretarding on grade, maintainingapproximately 2,230 rpm.
• Traction Control System (TCS).Improves performance in poorunderfoot conditions by electronicallymonitoring and controlling wheelslippage.
• Integrated Brake Controller (IBC).Combines ARC and TCS, reducingthe number of electronic componentsand electrical lines.
9
Brakes.
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
Multiple Disc Brakes. Caterpillar forcedoil-cooled, multiple disc brakes arecontinuously cooled for exceptional,fade-resistant braking and retarding.The optional ARC and TCS utilize theoil-cooled rear brakes to enhance truckperformance and increase productivity.
Oil Cooled Disc Brakes. Are designedand built for reliable, adjustment-freeoperation providing superior performanceand service life in comparison to shoe-type and dry-disc systems.
Oil Film. An oil film prevents directcontact between the discs. Absorbingthe braking forces by shearing oil andcarrying heat away, this design extendsbrake life.
Secondary Braking. Spring applied,hydraulically released, oil-cooled discbrakes are located on the rear axle.The front brakes will activate as partof the secondary system, even ifswitched out of service.
Parking Brakes. Spring applied,hydraulically released parking brakesuse wet disc brakes in service system.A toggle switch activates theparking brakes.
Pistons. A Caterpillar patented, two-piston design combines the service,secondary and parking brakes, alongwith retarding functions.
The primary piston hydraulically actuatesboth service and retarding functions.The secondary piston is spring-appliedand held in the disengaged position byhydraulic pressure. If hydraulic systempressure drops below a certain level,the spring-applied secondary pistonautomatically applies the brakes.
10
Oil-Cooled, Rear Disc BrakesRear braking lets the operator concentrate on the haul road.
3
4
5 6
7
1
2
Cat Retarding System. When retarding,the engine runs against compression ondownhill hauls, resulting in no fuel burn.
Retarding forces and heat are absorbedthrough the oil. The retarding systemgenerates lower drive line stresses thandrive line retarding systems.
Automatic Retarder Control (Optional).The ARC electronically controls brakingon grade to maintain approximately2,230 engine rpm (engine rpm isadjustable from 2,160-2,300 rpmin increments of 10 rpm). ARC isdeactivated when the operator appliesthe brakes or throttle.
Engine Overspeed Protection. With theaccelerator depressed and/or ARCturned off, ARC will automaticallyactivate at 2,475 rpm to help avoidpotentially destructive and often costlyengine overspeeds.
ARC Benefits. Include:
• Increased operating efficiency withfaster downhill speeds. By maintainingconsistently higher engine speeds,average truck speed will be higherthan a manually controlled truck.
• Excellent controllability and reducedoperator effort. Automatic brakemodulation provides a smoother rideover manual modulation, allowingthe operator to focus more on truckoperation down the haul road.
• Improved component life, optimizedsystem cooling capability and reducedtorque fluctuations result from ARC’sprecision.
• Faster troubleshooting and diagnosiswith self-diagnostic capability andthe ability to communicate with ETthrough the Cat Data Link System.
• Operator awareness through electronicintegration and CEMS, alerting theoperator to overspeed conditions andcritical machine functions.
Traction Control System (Optional).Monitors wheel slip so if it exceedsthe set limit, the oil-cooled disc brakesare automatically applied to slow thespinning wheel.
Operator Awareness. An on-dashindicator shows the operator that TCSis engaged.
Differential Action. Utilizes normaldifferential action to provide superiormaneuvering in poor underfootconditions. Also reduces tire scuffing ascompared to positive lock differentialsused on other systems.
Torque. TCS divides torque equallyto reduce stress created on final drivesand axles when torque is transferred toone side.
System Back-up. Should sensors fail,the normal differential action is stillavailable to maintain control and steering.
11
Integrated Braking Control (IBC)Electronically combines Automatic Retarding Control (ARC) and the Traction ControlSystem (TCS) into one integrated control system.
ARC Operating Efficiency Advantages
*
10Time (Seconds)
20 30 40 50 60
Automatic Retarder Control(Maintains Engine rpm between 2160-2300)
Manual Retarder Control(Wide Variation in Engine rpm)
* Optimum Engine rpm
Engi
ne S
peed
(rpm
)
700
Box-Section Design. The 771D frameuses a box section design, incorporating17 castings in high stress areas withdeep penetrating and continuous wrap-around welding. Mild steel, whichprovides flexibility, durability andresistance to impact loads even incold climates is used throughout.
Castings. Castings have large radii withinternal reinforcing ribs to dissipatestress. Castings move welds to lowerstress areas and provide two to threetimes the strength of equivalent sizedfabricated structures.
Frame Features. Include:
• Integral front bumper
• Front box beams for suspensioncylinder and ROPS support
• Box-section rear crossmemberfor body and ROPS support withattachment points for maintenanceplatform and rear engine hoodhinge support
• Castings provide additional strengthin critical stress areas
• Mild steel plates (290 MPa [42,000 psi]minimum yield strength) and castings(241 MPa [35,000 psi] minimum yieldstrength) provide flexibility, durabilityand easy field maintenance
Frame Serviceability. The box-sectionframe allows simple access to powertrain components. This open designreduces overall removal and installationtime, lowering repair costs. Transmissionaccess is excellent under the raisedand pinned body. Repairs can bemade without preheating in ambienttemperatures 16° C (60° F) usingreadily available welding supplies.
Rollover Protection Structure (ROPS).The ROPS attaches securely to fourcastings welded into the frame.
Suspension System. Designed to dissipatehaul road and loading impacts forextended frame life.
Four, independent, self-contained,oil pneumatic, variable-rebound,suspension cylinders absorb shocks.Rear cylinders allow axle oscillationand absorb bending and twistingstresses. Front cylinders, mounted tothe frame, serve as steering kingpins,providing excellent maneuverabilityand reduced maintenance. Caster andcamber are preset.
12
StructuresThe backbone of the Cat off-highway truck.
Design. 771D bodies are designed tohandle a variety of material densities.Maximum payload is reached in threeto five passes from a matched Catloader in 1620 kg/m3 (2,700 lb/yd3)material and higher.
Flat Floor Quarry Body. Offers excellentload retention on grades up to 12 percentand on smoother haul road conditions.
Body Floor Construction. Uses a12 degree single slope, offeringexcellent wear characteristics anduniform dumping into hoppers,crushers and feeders.
Sidewall and Floor Junctions. Are joinedby five-sided beams to resist impactloading and sustained hauling stresses.
Box-Section Beams. Offer increaseddurability in the floor, sidewalls, toprail, corner and cab canopy areas.
15) Truck Production ManagementSystem (TPMS) (Optional). Providespayload and cycle time data.
• Cat developed technology utilizesstrut pressure sensors and an on-boardmicroprocessor to determine payloadweight.
• Accurate under normal loading towithin ± five percent over a normaloperating shift.
• Delivers consistent accurate payloadsand improves efficiency by minimizingoverloading and underloading
• - On-board computer stores 1,400 cyclesfor further analysis of payload weight,cycle segment times, cycle segmentdistances and actual clock time anddate of each cycle.
• - External lights signal loading tooloperator when payload is reached.
• - Internal troubleshooting and faultrecording for easier maintenance.
15
16
Cat QuickEvacTM System. Is an exclusiveCaterpillar on-board engine oil evacuationand prelubrication system.
Automated Engine Oil Change. A new,state of the art, on-board system evacuatesengine sump in less than two minutesand allows for partial purge of oil filtersprior to removal, minimizing oil spills.New oil is delivered through primaryfilters, enhancing contamination controlefforts while ensuring that new filtersare correctly filled following routineoil change.
Contamination Control. Environmentallyefficient, clean oil changes are ensuredsince engine sump is evacuated directlyinto PM trucks or waste containers withflush faced, quick disconnects for fastevacuation and fill. This eliminateshandling of waste oil, minimizeschances of oil spillage and enhancescontamination control efforts byensuring complete filtration of newoil on engine refill.
Complete Engine Prelubrication.Provides engine oil pressure prior toengine cranking. Reduces engine drystart wear and risk of cold starts forincreased protection of key components.Also provides expanded low temperaturerange for 15W40 motor oils.
Improved Serviceability and MachineAvailability. Reduces time to completeengine service (changing engine oil, oilfilters, fuel filter, air cleaner) by as muchas 30 to 50 percent. Improves the abilityto better schedule engine services atprescribed hours, and integrates easilywith PM trucks to further reduce totalcycle time of engine service.
Ground Level Battery DisconnectSwitch. Facilitates safe, convenientservicing and maintenance.
On-Board Diagnostics. With CEMS,provides the machine operator with athree-category warning system andquick access to stored diagnostic data.
Serviceability/Total Customer SupportPurchase of a Caterpillar machine includes a total commitment to customer support.
17
Off-Board Diagnostics. With ET, allowsservice technicians access to storeddiagnostics data reducing downtimeand lowering operating costs. ET storesengine parameter information such astiming, throttle position and fuel flow.Transmission data is available through ETvia access to the Cat Data Link System.
Radial Seal Filters. Are easy to change,reducing air filter maintenance times.
Vertical, Spin-on Oil Filters. Provide forsimplified servicing.
Quick Coupler Pressure Taps. Locatedin all hydraulic systems provide clear,quick pressure checks. S·O·SSM oilanalysis points make oil samplingquick, clean and easy.
Sealed Electrical Connectors. Lockoutdust and moisture. Color-coded wiring isstandard for the entire Cat product line.
Machine Management Service.Cat Dealers help manage equipmentinvestments with:
• Vehicle systems analysis to helpmatch the right machine to the job
• Preventative maintenance programs
• S·O·S oil analysis and technicalanalysis programs
• Repair option analysis
• Training for operators and mechanics
• TPMS data analysis
Parts Availability. The Caterpillarworldwide computer network locatesparts instantly to minimize machinedowntime.
Literature Support. Caterpillar manualsare easy to use and help provide the fullvalue of an equipment investment.
18
Systems/ApplicationsThe 771D is designed for versatility.
Machine Configuration Options.Caterpillar offers a variety of machineconfiguration options to help meetcustomer needs.
Body Options. Include a full line ofstandard and custom designs based onspecific customer preference, materialdensity, loading tool and site conditions.
Tire Options. A full line of tire options,representing various manufacturers,is offered by Caterpillar to maximizeperformance and life for specificapplications.
Attachments. Give the customer optionsto tailor trucks for specific applicationrequirements, including:
• Truck Production Management System
• Automatic Retarder Control
• Traction Control System
• Muffler/exhaust diverter
• Custom product offerings
System Approach. The Caterpillarsystem approach means increasedefficiencies through common design.Haul trucks, loaders, excavators,tractors, engines for generator sets andpumps - all designed by Caterpillar -use common components, parts anddesign. Commonality reduces customerparts stock, improves parts availability,reduces training/maintenance andimproves diagnostics. This systemapproach adds up to lower cost-per-ton.Dealer support is available to addresscustomer needs regardless of thecomponent.
Caterpillar Product Analysis Team (PAT).Combined with Caterpillar softwareprograms can assist customers withdetailed, application evaluation.
Loader Match. Designed to work as partof a system, the 771D is best matchedto the following Caterpillar loaders:
• 980G - five pass/match
• 988G - four pass/match
• 5080 - four to five pass/match
• 375ME - four to five pass/match
19771D Quarry Truck specifications
Operating Specifications
SAE (2:1) Capacity 27.5 m3 36 yd3
Nominal Payload Capacity 41 tonnes 45 tons• Refer to the Caterpillar 10/10/20 Payload Policy.
Differential ratio 2.74:1Planetary ratio 4.80:1Total reduction ratio 13.15:1• Planetary, full-floating.
Suspension
Effective cylinder stroke - front 234 mm 9.2 inEffective cylinder stroke - rear 149 mm 5.9 inRear axle oscillation ±8.5°
Engine
Engine Model Caterpillar 3408EGross Power 386 kW 518 hpFlywheel Power 363 kW 487 hpDIN 70020 505 PSMax. Torque 2186 N.m 1,618 lb ftTorque rise 27 %Bore 137 mm 5.4 inStroke 152 mm 6 inDisplacement 18 L 1,099 in3
• Gross power meets ISO 3046-02 standards.
• Flywheel power meets ISO 9249, SAE J1349 JUN 95 andEEC 80/1269 standards.
• These ratings apply at 2,000 rpm when tested under thespecified standard conditions for the specified standard.
• Power rating conditions based on standard air conditionsof 25° C (77° F) and 99 kPa (29.32 in Hg) dry barometer,using 35° C API gravity fuel having an LHV of 42 780 kJ/kg(18,390 Btu/lb) when used at 30V C (86° F) [reference a fueldensity of 838.9 g/L (7.001 lb/gal)].
• Net power advertised is the power available at the flywheelwhen the engine is equipped with fan, air cleaner, mufflerand alternator.
• No derating required up to 3050 m (10,000 ft) altitude.
• Meets U.S. Environmental Protection Agency Tier 2emissions regulations.
• ROPS Meets SAE J1040 MAY94and ISO 3471:1994 standards.
• Rollover Protective Structure (ROPS) is offered byCaterpillar as standard equipment.
• The operator sound pressure level is less than 74 dB(A)when measured according to the stationary test proceduresand the conditions specified in ISO 6394.
• The operator sound exposure Leq (equivalent soundpressure level) is less than 79 dB(A) when measuredaccording to the work cycle procedures specified inANSI/SAE J1166 MAY 90 for the cab offered by Caterpillarwhen properly installed and maintained and windowsclosed.
Sound
• Exterior Sound Meets ANSI/SAEstandards
• This machine, in standard configuration, when measuredand operated per the prescribed modes in ANSI/SAE J88APR95 has a 15 m sound pressure level of 84 dB(A) for themode that gives the highest level.
• When the optional attachment sound suppression packageis properly installed and maintained, this machine complieswith the European Directive for Equipment Used Outdoors -2000/14/EC.
Steering
• Steering Meets SAE J1511 FEB94 and ISO 5010:1992 standards.
• Turning diameter per ISO 7457-1997 is 17.0 m (55 ft 9 in).
• Machine clearance diameter per ISO 7457-1997 (E) is 20.3 m(66 ft 7 in).
• Steering angle (left or right) is 39 degrees.
• Separate hydraulic system prevents cross contamination.
• Steering wheel effort is low and cycle times are reducedwith dynamic, load sensing, variable displacement piston-type steering pump.
Service Refill Capacities
Fuel Tank Capacity 530 L 140 galCooling System 113.5 L 30 galCrankcase 45 L 12 galDifferentials and final drives 83 L 22 galSteering tank 34 L 9 galSteering System (includes tank) 56 L 15 galBrake/hoist hydraulic tank 133 L 35 galBrake/hoist system 277 L 73 gal(includes tank)Torque converter/ 53 L 14 galtransmission sumpTorque converter/transmission 72 L 19 galsystem (includes sump)
Body Hoists
Pump flow - high idle 417 L/min 110 gal/minRelief valve setting - raise 17 225 kPa 2,500 psiRelief valve setting - lower 3445 kPa 500 psiBody raise time @ high idle 7.5 SecondsBody lower time float 8.3 SecondsBody power down @ high idle 8.3 Seconds• Twin, two-stage, hydraulic cylinders mounted inside the
main frame, double acting in second stage.
• Power raise in both stages and power down in second stage.
Brakes
Brake surface - front 1395 cm2 216 in2
Brake surface - rear 54 999 cm2 8,525 in2
• Brakes meet the SAE J/ISO 3450:1998, ISO 3450:1996standards up to 75 700 kg (166,500 lb) gross operatingweight.
Tires
• Tires Standard:18.00-R33 (E4)• Productive capabilities of the 771D are such that, under
certain job conditions, TKPH (TMPH) capabilities of standardor optional tires could be exceeded and, therefore, limitproduction.
• Caterpillar recommends the user evaluate all job conditionsand consult the tire manufacturer to make proper tireselection.
20 771D Quarry Truck specifications
21771D Quarry Truck specifications
DimensionsAll dimensions are approximate.
11 7628 mm 25 ft 0 in12 1527 mm 5 ft 0 in13 5519 mm 18 ft 1 in14 7735 mm 25 ft 5 in15 3398 mm 11 ft 1 in16 464 mm 1 ft 6 in17 364 mm 1 ft 2 in18 2541 mm 8 ft 4 in19 4018 mm 13 ft 2 in10 3943 mm 12 ft 11 in
Flat Floor
* Operating width to r.h. mirror
200 mm(8")
3690 mm(12 ft 1 in)
empty
3590 mm(11 ft 9 in)
loaded
8200 mm(26 ft 11 in)
3713 mm(12 ft 2 in)
12°
60°
1
2
empty5
6empty
7loaded
43
8
3620 mm(11 ft 11 in)
3658 mm(12 ft)
4398 mm(14 ft 5 in)
3659 mm(12 ft)
3103 mm(10 ft 2 in)
*5069 mm(16 ft 8 in)
4437 mm(14 ft 6 in)
600 mm(24 in)empty
600 mm(24 in)empty 3575 mm
(11 ft 9 in)
2470 mm(8 ft 1 in)
3614 mm(11 ft 10 in)
3910 mm(12 ft 10 in)
10loaded
9empty
22 771D Quarry Truck specifications
The brake performance retarding curves shown in this sectionare for general guidance only. As each site has many uniqueenvironmental and operating conditions that will impactretarding performance, actual site performance could varyconsiderably from predicted performance. Users should usethe retarding speed (gear) recommendations from these tablesas a starting point for determining retarding performance andthen adjust retarding speeds to their site-specific conditions.In adjusting retarding performance to continuously changingenvironmental and site-specific conditions, users need toexercise care to maintain brake cooling and machinecontrollability at all times.
To determine brake retarding performance from retarding tables:
1. Determine the total distance of all downhill grades combinedfor a given haul profile. This total distance determines theappropriate retarding table (continuous or one of the gradedistance tables) applicable to your haul profile.
2. Read from the appropriate gross weight down to percentfavorable effective grade. (For these retarding charts,effective grade equals the maximum grade of all downhillhaul segments minus rolling resistance – do not use anaverage grade value.)
3. From the intersection of the gross weight and effective gradeline point, read horizontally to the appropriate gear curve.If the horizontal line intersects two gear curves, choose thefirst gear curve that the horizontal line intersects (readingfrom right to left) and read the retarding speed performanceimmediately below this point. If the intersection point fallson a vertical line between two gears, choose the lowest of thetwo gears to allow for higher engine rpm thus maximizingbrake cooling capability.
4. Adjust recommended retarding speeds to site specific(environmental and operational) conditions. If the brakesystem overheats or specific site conditions dictate (tightturns, short steep grades, manual braking, etc.), reduceground speed to allow the transmission to shift to the nextlower speed range.
To determine gradeability performance,read from gross weight down to thepercent of total resistance. Totalresistance equals actual percent gradeplus one percent for each 10 kg/tonne(20 lb/ton) of rolling resistance. Fromthis weight-resistance point, readhorizontally to the curve with thehighest obtainable gear, then down tomaximum speed. Usable rimpull willdepend upon traction available andweight on drive wheels.
26 771D Quarry Truck specifications
Air horn, electricAir line dryerAlternator, 50-ampAuxiliary jump start receptacleBackup alarmBattery disconnect switch, ground levelBody mounting groupBrakes