®®

EngineEngine Model Cat® C27 ACERT™Gross Power – SAE J1995 579/600 kW 776/805 hp

Operating SpecificationsNominal Payload Capacity 55 000 kg 121,254 lbGross Machine Operating Weight 105 000 kg 231,485 lb

Body CapacitiesDump Body – Standard 26.9 m3 35.2 yd3

• Heaped SAE 2:1

AD55BUndergroundArticulated Truck

2

AD55B Underground Articulated TruckEngineered for performance, designed for comfort, built to last.

Top Performance.The AD55B underground articulated truck isdesigned for high production, low cost-per-tonhauling in underground mining applications.

Reliable, Durable Operation. Rugged construction and easy maintenanceguarantee long life with low operating costs.

Serviceability

The AD55B is designed for quick andeasy servicing. Simplified service andmaintenance features reduce downtime,allowing the machine to spend less timebeing serviced and more time in themine. pg. 11

Structures

Cat® truck frames are built to optimizetorsional load displacement in highimpact applications. High strengthsteels provide flexibility, durability andresistance to impact loads, even in coldclimates. pg. 10

Engine/Power Train Integration

The Cat Data Link electronicallycombines engine, transmission,brake and operational information tooptimize overall truck performance.Stored diagnostic data can be accessedvia the Electronic Technician (Cat ET)to improve troubleshooting and reducedowntime. pg. 6

Power Train – Transmission

The Cat seven-speed planetary powershift transmission and mechanicalpower train is matched with theelectronic unit injection C27 enginewith ACERT™ technology to provideconsistent power and efficiency forpeak power train performance. pg. 5

Power Train – Engine

The Cat® C27 engine with ACERT™Technology delivers the power andreliability necessary to perform in themost demanding underground miningapplications. Designed for efficientoperation, excellent fuel efficiency,lower emissions, reduced engine noiseand lower operating costs. pg. 4

3

Safety

Caterpillar sets the standard whenit comes to safety in the design andmanufacturing of heavy equipment forthe mining industry. Safety is not anafterthought at Caterpillar, but an integralpart of all machine and systems designs.pg. 13

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. 12

Truck Body Systems

Caterpillar truck bodies are designedas a system to achieve rated payloadand provide the lowest cost-per-tonhauling system when matched withCat Underground Mining Loaders.A variety of Caterpillar designedand built truck bodies ensure optimalperformance and reliability. pg. 9

Operator’s Station

The ergonomic cab is designed foroperator comfort and ease of operationallowing the operator to focus onproductivity. Controls and gauges arepositioned within easy reach for optimumefficiency and superior control. pg. 8

Caterpillar® Brake System

Cat oil-cooled, multiple disc brakesoffer exceptional, fade-resistant brakingand retarding for maximum performanceand productivity in all conditions.Automatic Retarder Control (ARC)optimizes braking efficiency. pg. 7

Engine. The Cat C27 engine withACERT™ technology delivers higherpower and greater durability formaximum hauling performance in themost demanding mining applications.Complete system integration of theengine and transmission optimizesperformance and efficiency.

Power Increase. The 21.8% powerincrease over previous models providesunequalled lugging force duringacceleration and less down-shifting ongrade. Improved software and updatesin engine technology further improvetransmission shifting and decrease fuelconsumption.

Watercooled Turbocharged and ATAAC.Air-to-air aftercooling provides improvedfuel economy by packing cooler, denserair into cylinders for more completecombustion of fuel and lower emissions.

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).ECM utilizes advanced enginemanagement software to monitor,control and protect the engine utilizingself-diagnosing electronic sensors.The computerized system sensesoperating conditions and powerrequirements and adjusts engine forpeak performance and most efficientoperation at all times.

Design. Caterpillar designed one-piececast iron block provides maximumstrength and durability. Two-piecearticulated pistons with forged steelcrowns are designed to withstand highercylinder pressure.

EPA Compliant. The Cat C27 Enginewith ACERT™ technology is compliantwith U.S. Environmental ProtectionAgency Tier 2 Emission Standards.

4

Power Train – EngineThe Cat® C27 engine with ACERT™ Technology delivers the power and reliabilitynecessary to perform in the most demanding underground mining applications.

Mechanical Power Train. The Catmechanical drive power train and powershift transmission provide unmatchedoperating efficiency and control onsteep grades, in poor underfootconditions, and on haul roads anddrives with high rolling resistance.

1) Transmission. The Cat seven-speedplanetary power shift transmission ismatched with the direct-injectionC27 engine with ACERT™ technologyto deliver constant power over a widerange of operating speeds.

Robust Design. Designed for ruggedunderground mining conditions, theproven planetary power shift transmissionis built for long life between overhauls.

2) Lock Up Torque Convertor. Combinesmaximum rimpull and cushionedshifting of torque converter drive withthe efficiency and performance of directdrive. When engaged, lock-up providessuperior power train efficiency bydelivering more power to 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. Electronic clutchpressure control provides smoothershifts, improved serviceability andoptimizes performance.

3) Final Drives. Cat final drives work asa system with the planetary power shifttransmission to deliver maximumpower to the ground. Built to withstandthe forces of high torque and impactloads, final drives provide high torquemultiplication to further reduce drivetrain stress.

Full Floating Axles. Full floating axlesrelieve internal stresses and increasedurability. Rolled splines also provideincreased service life.

5

Power Train – TransmissionCat power train delivers more power to the ground for greater productivity and loweroperating costs.

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.

• Economy Shift Mode. Reduces enginespeeds, resulting in decreased fuelconsumption, lower noise levels andpotentially longer engine life.

• Directional Shift Management.Regulates engine speed during directionalshifts to prevent damage caused by highspeed directional changes.

• Body-up Shift Inhibitor. Prevents thetransmission from shifting above apre-programmed gear without the bodyfully lowered.

Electronic Technician (Cat ET). Cat ETservice tool provides service technicianswith easy access to stored diagnosticdata through Cat Data Link to simplifyproblem diagnosis and increaseavailability.

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.

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.

6

Engine/Power Train IntegrationElectronically combines critical power train components to work more intelligentlyand optimize overall truck performance.

Integrated Braking System. The Cat oil-cooled braking system delivers reliableperformance and control in the mostextreme underground mining conditions.The integrated system combines theservice, secondary, parking brake andretarding functions in the same robustsystem for optimum braking efficiency.

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

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.

Automatic Retarder Control (ARC).Electronically controls retarding ongrade to maintain optimum engine rpmand oil cooling. Additional braking maybe applied using the manual retarder orthe brake pedal.

Faster Speeds. ARC allows the operatorto maintain optimum engine speeds forfaster downhill hauls and greaterproductivity.

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

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

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

Fuel Efficiency. The engine providesadditional retarding by runningagainst compression on downhill hauls.During retarding applications the engineECM reduces fuel injection to minimumvalue or exceptional fuel economy.

7

Caterpillar Brake SystemReliable braking with superior control gives the operator the confidence to focuson productivity.

1

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

2

7

65

4

3

Ergonomic Layout. The AD55B 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.

Protective Structure. Integral to the caband frame, both the Rollover ProtectiveStructure (ROPS) and Falling ObjectsProtective Structure (FOPS) are resilientlymounted to the mainframe to isolate theoperator from vibration for a morecomfortable ride.

Optional Enclosed Cab. Optional sound-suppressed ROPS cab provides a quiet,secure working environment. Encloseddesign provides fresh, pressurized,temperature-controlled air circulationwith air-conditioned comfort and a morecomfortable working environment.

Suspension Seat. Ergonomicallydesigned, fully adjustable suspensionseat with adjustable armrests provideoptimal operator comfort. Thick cushionsreduce pressure on lower back andthighs. Wide, retractable seat beltsprovide a secure, comfortable restraint.

Steering Column. Comfort wheel with tiltsteering provides a comfortable drivingposition, secure grip and greater control.

Monitoring System. Caterpillar ElectronicMonitoring System (CEMS) continuouslyprovides critical machine data tokeep the machine performing at topproduction levels. Displays arebacklit for easy viewing.

• Gauge Cluster. Maintains a constantdisplay of vital machine functions,including: engine coolanttemperature, brake oil temperature,engine oil pressure, and fuel level.

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

• Message Center. The CaterpillarElectronic Monitoring System(CEMS) includes 4 warningcategories and provides visual andaudible warning system outputs toalert operators of abnormal machinehealth conditions.

Interlock. If the operator fails to applythe park brake prior to exiting the cab,the interlock system will detect theabsence of operator input and applythe park brake, neutralize the steering,implements and transmission andcommand the engine ECM to shut downthe engine.

8

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

Cat Truck Bodies. Caterpillar offers twospecific body styles for the mostefficient hauling solutions at the lowestcost-per-ton.

• Dump Body

• Ejector Body

Body Selection. Selection of the rightbody depends on material, haul road,and dump conditions. The better thematch of body to application, thegreater the efficiency. Your Cat dealercan help you select the right bodysystem for your site specific application.

Body Design. Cat truck bodies aredesigned for optimal strength, capacityand durability. With improved designand the use of Hardox steel, longerservice life and lower cost per tonfigures are now evident.

Body/Chassis Integration. Caterpillartruck bodies are designed and matchedwith the integrated chassis system foroptimum structural reliability, durabilityand long life.

Fast Hoist Cycle Times. Single-stagehoist cylinders provide fast dumpcycle times of 12 seconds for raiseand 24 seconds for lower.

Load Carrying Capacity. Large targetarea provides high load carryingcapacity. Its diverging flow designgives clean load ejection, whichmaximizes production and avoidsmaterial carryback.

Truck Payload Management System(TPMS). The optional TPMS systemcalculates the payload the truck iscarrying and determines truckcycle times.

Ejector Body. The ejector body offersclean load ejection and the capabilityto work in areas with restricted overheadclearance and soft underfoot conditions.

9

Truck Body SystemsCat designed and built for rugged performance and reliability in tough underground miningapplications.

Frame Design. The frame incorporatesa box-section design with wide and stiffframe beams to handle torque loads.The frame design decreases stress inthe hitch area and optimizes suspensiongeometry. Materials and weld jointsare matched to optimize the life ofthe structure.

Articulating/Oscillating Hitch.The articulating hitch provides thetruck with steering articulation and theoscillation ensures the truck maintainsall wheel ground contact in roughterrain. Hardened steel pins, taper rollerbearings and oscillating stops allows therear frame to move independently fromthe front frame.

Suspension System. The suspensionsystem is designed to dissipate haulroad and loading impacts for longerframe life.

Suspension Cylinders. Two variablerebound suspension cylinders connectedto an accumulator absorb shocks beforeforces get to the mainframe for longerframe life and a more comfortable ride.

10

StructuresRugged Cat structures are the backbone of the AD55B underground mining truck’s durability.

Service Access. Easy access to dailyservice points simplifies servicingand reduces time spent on regularmaintenance procedures.

Ground-Level Access. Allows convenientservicing to tanks, filters, lubricationpoints and compartment drains.

Diagnostics. Electronic control systemenables quick diagnosis of engineconditions and effective maintenanceand repairs utilizing the Cat ElectronicTechnician (Cat ET) Service Tool.

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

Sight Gauges. Makes fluid level checksquick and easy. These include thehydraulic, transmission and coolantreservoirs.

Sealed Electrical Connectors. Electricalconnectors are sealed to lock out dustand moisture. Harnesses are covered forprotection. Wires are color and numbercoded for easy diagnosis and repair.

Scheduled Oil Sampling. S•O•SSM

sampling valves speed sampling andanalysis reliability.

11

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

Commitment Makes the Difference.Cat dealers offer a wide range ofsolutions, services and productsthat help you lower costs, enhanceproductivity and manage your operationmore efficiently. Support goes far beyondparts and service. From the time youselect a piece of Cat equipment untilthe day you rebuild, trade or sell it,the support you get from your Cat dealermakes the difference that counts.

Dealer Capability. Cat dealers willprovide the level of support you need,on a global scale. Dealer experttechnicians have the knowledge,experience, training and toolingnecessary to handle your repair andmaintenance needs, when and whereyou 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

Technology Products. Cat dealers offera range of advanced technology productsdesigned to improve fleet efficiency,increase productivity, and lower costs.

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

Operation. With today’s complexproducts, equipment operators musthave a thorough understanding ofmachine systems and operatingtechniques to maximize efficiencyand profitability. Your Cat dealer canarrange training programs to helpoperator’s improve productivity,decrease downtime, reduce operatingcosts, enhance safety, and improvereturn on the investment you makein Cat products.

Application Awareness. Operating andmaintenance costs are influenced bymany application and site-specificfactors, such as: material density, loadingposition, payload, grades, speeds,haul road design, and maintenance.To optimize total cost of ownershipand productivity, your Cat dealercan provide you with a fundamentalunderstanding of the effects applicationcharacteristics and operating techniqueshave on maintenance and operating costs.

12

Customer SupportCaterpillar dealers have what it takes to keep Underground Mining Equipment productive.

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.

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

Integral ROPS Cab. Integral to the caband frame, the ROPS is resilientlymounted to the frame to isolate theoperator from vibration for a morecomfortable ride.

Brake Systems. Four corner oil-cooledbraking system provides excellentcontrol. The service brakes and retardingsystem are actuated by modulatedhydraulic pressure, while the parkingbrake function is spring applied andhydraulic released. This system assuresbraking in the event of loss ofhydraulic pressure.

Interlock. If the operator fails to applythe park brake prior to exiting the cab,the interlock system will detect theabsence of operator input and applythe park brake, neutralize the steering,implements and transmission andcommand the engine ECM to shut down.

Standard Safety Features.

• Anti-Skid upper deck surfaces

• Upper deck handrails

• 3-point cabin and machine access

• Push out safety glass foralternative exit

• Excellent visibility

• Suspension seat

• Passenger/training seat

• Inertia reel retractable belts

• Steering frame lock

• Rear window guard

• Body retaining pins

• Automatic retarder control

• Exhaust heat shielding and firewallfitted standard

• Hitch hydraulic hoses – burstprotection sleeves fitted

• Tailgate retaining pins (ejector body)

• Ground level compartmentsight glasses

• Lock-up supports on access covers

SAFETY.CAT.COM™

13

SafetyCaterpillar mining machines and systems are designed with safety as their first priority. SAFETY.CAT.COM™

14 AD55B Underground Articulated Truck specifications

Weight Distribution

EmptyFront Axle 68.4%Rear Axle 31.6%

LoadedFront Axle 50.4%Rear Axle 49.6%

Transmission

Forward 1 6.6 km/h 4.1 mphForward 2 9.3 km/h 5.8 mphForward 3 12.5 km/h 7.5 mphForward 4 16.8 km/h 10.4 mphForward 5 22.7 km/h 14.1 mphForward 6 30.7 km/h 19.1 mphForward 7 41.5 km/h 25.8 mphReverse 1 8.7 km/h 5.4 mph

• Maximum travel speeds with standard 35 � 65 R33 tires.

Final Drives

Differential Ratio 3.46:1Final Drive Ratio 5.5:1Total Reduction Ratio 19.04:1

Body Hoist

Raise 12 SecondsLower 24 SecondsTotal Cycle Time 36 Seconds

Body Capacities

Dump Body – Standard 26.9 m3 35.2 yd3

Dump Body – Optional 32.6 m3 42.6 yd3

Dump Body – Optional 33.8 m3 44.2 yd3

Dump Body – Optional 36.6 m3 47.9 yd3

• Heaped SAE 2:1

Engine

Engine Model Cat C27 ACERT™Rated Power 2000 RPMGross Power – SAE J1995 579/600 kW 776/805 hpNet Power – SAE J1349 540/560 kW 725/751 hpNet Power – ISO 9249 540/560 kW 725/751 hpNet Power – 80/1269/EEC 540/560 kW 725/751 hpBore 137.2 mm 5.4 inStroke 152.4 mm 6 inDisplacement 27 L 1,648 in3

• Power ratings apply at a rated speed of 2000 rpm whentested under the reference conditions for the specifiedstandard.

• Ratings based on SAE J1995 standard air conditions of 25° C(77° F) and 100 kPa (29.61 Hg) barometer. Power based onfuel having API gravity of 35 at 16° C (60° F) and an LHV of42,780 kJ/kg (18,390 BTU/lb) when engine used at 30° C (86° F).

• Engine derate will commence at an altitude of 557 m(1,827 ft).

• Complaint with U.S. Environmental Protection Agency Tier 2emissions standards.

Operating Specifications

Nominal Payload Capacity 55 000 kg 121,254 lbGross Machine Operating Weight 105 000 kg 231,485 lb

Weights

Empty 50 000 kg 110,231 lbFront Axle 34 200 kg 75,398 lbRear Axle 15 800 kg 34,833 lb

Loaded 105 000 kg 231,485 lbFront Axle 52 920 kg 116,668 lbRear Axle 52 080 kg 114,817 lb

15AD55B Underground Articulated Truck specifications

Service Refill Capacities

Engine Crankcase with Filter 99 L 26.2 galTransmission 53 L 14 galHydraulic Tank 258 L 68.2 galCooling System 138 L 36.5 galFront Differentials and Final Drives 138 L 36.5 galRear Differentials and Final Drives 138 L 36.5 galFuel Tank 960 L 253.6 gal

Tires

Tire Size 35 � 65 R33

Standards

Brakes ISO3450, AS2958.1,CAN-CSA424.30-M90

Cab/FOPS ISO3449, SAEJ231,AS2294.3, EN13627

Cab/ROPS ISO3471, SAEJ1040,AS2294.2, EN13510

Turning Dimensions

Outside Clearance Radius 10 005 mm 393.9 inInside Turning Radius 5540 mm 218.1 inFrame Oscillation 10°Articulation Angle 42.5°

Dimensions

All dimensions are approximate.

313-4730 (Standard Body) 312-1395 307-6655 311-4721Dump Body 26.9 m3 (35.2 yd3) 32.6 m3 (42.6 yd3) 33.8 m3 (44.2 yd3) 36.6 m3 (47.9 yd3)

1 Overall Height – Body Empty 3278 mm (10'9") 3418 mm (11'3") 3557 mm (11'8") 3560 mm (11'8")

2 Height to Top of Body 3202 mm (10'6") 3418 mm (11'3") 3556 mm (11'8") 3560 mm (11'8")

3 Height to Top of ROPS 3000 mm (9'10") 3000 mm (9'10") 3000 mm (9'10") 3000 mm (9'10")

4 Front Bumper to Centerline 4164 mm (13'8") 4164 mm (13'8") 4164 mm (13'8") 4164 mm (13'8")of Front Axle

5 Centerline of Front Axle 1920 mm (6'4") 1920 mm (6'4") 1920 mm (6'4") 1920 mm (6'4")to Centerline of Hitch

6 Overall Length 12 040 mm (39'6") 12 040 mm (39'6") 12 040 mm (39'6") 12 040 mm (39'6")

7 Max Overall Length 12 064 mm (39'7") 12 180 mm (39'11") 12 222 mm (40'1") 12 241 mm (40'2")

8 Wheelbase 5900 mm (19'4") 5900 mm (19'4") 5900 mm (19'4") 5900 mm (19'4")

9 Centerline of Hitch 3980 mm (13'1") 3980 mm (13'1") 3980 mm (13'1") 3980 mm (13'1")to Centerline of Rear Axle

10 Ground Clearance 393 mm (1'3") 393 mm (1'3") 393 mm (1'3") 393 mm (1'3")

11 Centerline of Rear Axle to Tail 1976 mm (6'6") 1976 mm (6'6") 1976 mm (6'6") 1976 mm (6'6")

12 Rear Wheel to Body Raised 857 mm (2'10") 857 mm (2'10") 857 mm (2'10") 857 mm (2'10")

13 Dump Clearance 514 mm (1'8") 514 mm (1'8") 514 mm (1'8") 514 mm (1'8")

14 Loading Height 3045 mm (10'0") 3326 mm (10'11") 3426 mm (11'3") 3473 mm (11'5")

15 Overall Height – Body Raised 6969 mm (22'10") 7202 mm (23'8") 7322 mm (24'0") 7334 mm (24'1")

16 Tunnel Clearance Width* 5000 mm (16'4") 5000 mm (16'4") 5000 mm (16'4") 5000 mm (16'4")

17 Tunnel Clearance Height* 5000 mm (16'4") 5000 mm (16'4") 5000 mm (16'4") 5000 mm (16'4")

18 Overall Tire Width 3250 mm (10'8") 3250 mm (10'8") 3250 mm (10'8") 3250 mm (10'8")

19 Overall Width (Including Body) 3346 mm (11'0") 3480 mm (11'5") 3480 mm (11'5") 3480 mm (11'5")

20 Overall Width (Excluding Body) 3346 mm (11'0") 3346 mm (11'0") 3346 mm (11'0") 3346 mm (11'0")

21 Height to Top of Load (SAE 2:1) 3848 mm (12'7") 4178 mm (13'8") 4183 mm (13'9") 4333 mm (14'3")

* Clearance Dimensions are for Reference Only.

2117

16

19

20

1810

12° 13

14

15

9 125

6

1184

7

1 2 3

16 AD55B Underground Articulated Truck specifications

17AD55B Underground Articulated Truck specifications

To determine gradeability performance: Read from grossweight down to the percent of total resistance. Total resistanceequals actual percent grade plus rolling resistance as a generalguide use 2% for rolling resistance in underground application

or refer to the Cat Performance Handbook. From the totalresistance point, read horizontally to the curve with the highestobtainable gear, then down to maximum speed. Usable rimpullwill depend upon traction available and weight on drive wheels.

Gradeability/Speed/Rimpull

Typical Field Empty Weight

Loaded Weight

1A – 1st Gear Torque Convertor Drive1B – 1st Gear Direct Drive

2 – 2nd Gear Direct Drive3 – 3rd Gear Direct Drive4 – 4th Gear Direct Drive5 – 5th Gear Direct Drive6 – 6th Gear Direct Drive7 – 7th Gear Direct Drive

E – Empty 50 000 kg (110,000 lb)L – Loaded 105 000 kg (231,000 lb)

Rim

pu

ll

N x1000

lb x1000

km/h

mphTo

tal R

esis

tan

ce

(Gra

de P

lus R

ollin

g)

Gross Weight

Speed

0

10

20

30

40

50

60

70

80

90

100

110

120534

489

445

400

356

311

267

222

178

133

89

44

3.2 6.4 9.6 12.9 16.0 19.3 22.5 25.7 28.9 32.1 35.4 38.6 41.8 45.1 48.3

50110

105 kg x 1000 231 lb x 1000

0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32

25%

20%

15%

10%

5%

1A

2

4

5

7

3

1B

6

E L

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

OPERATOR ENVIRONMENTCab PressurizerRear View MirrorsRadio ReadyROPS/FOPS Cab With Air ConditioningStorage CompartmentSuspension Seat With Retractable Seat BeltTilt/Telescopic Steering WheelTrainer/Passenger Seat And Seat BeltWindshield Wiper And Washer

OTHER STANDARD EQUIPMENTArticulated And Oscillated HitchBelly GuardsCentralized Lubrication PointsDump Body (26.9 m3, 35.2 yd3)Exhaust Catalytic Converter/MufflerExhaust CoversFirewallFrame Lifting LugsFront And Rear Tow PinFront Axle SuspensionOil Sample AdaptersResidual Brake Pressure SwitchTires – 35/65 R33 VSNT Radial TiresTray-Up Alarm

ELECTRICALAlarm, Back-upAlternator, 95-ampBatteries, Maintenance FreeBattery Disconnect Switch-Ground LevelBrake and Tail LightsCaterpillar Electronic Monitoring System (CEMS)Corrosive Protection SprayDiagnostic ConnectorEngine Shutdown SwitchHeadlights With Dimmer SwitchJump Start ReceptacleRear Work Light (Cab Mounted)Reversing LightsStarting And Charging System (24-Volt)Turn Signal Indicators

POWER TRAINAll Wheel Disc BrakesAutomatic Retarder ControlAuto Shift Transmission 7 Speed Forward / 1 Speed ReverseControl Throttle Shifting12 Cylinder C27 ACERT™ ATAAC Diesel EngineLong Life CoolantParking Brakes (Four Wheels)Programmable Gear Blockout With Tray UpProgrammable Ground Speed LimitingTorque Converter With Automatic Lockup

18 AD55B Underground Articulated Truck specifications

19AD55B Underground Articulated Truck specifications

Optional EquipmentOptional equipment may vary. Consult your Caterpillar dealer for details.

Fire Extinguisher, Hand HeldFront Rubber BumpersID Numbers For RimsIdle TimerIsolation SwitchesOnboard Fire System, 65LRetractable Visor GroupSeat CoversSecondary Steering SystemSpare RimTPMS (Truck Payload Measurement System)TPMS Remote Display Payload Indicator

Black & White Camera & Monitoring SystemBodies

Body, (32.6 m3, 42.6 yd3)Body, (33.8 m3, 44.1 yd3)Body, (36.6 m3, 47.9 yd3)Body Liners, Heavy Duty

Color Camera & Monitoring SystemDual Speed ControlEAM (Electronic Access Module)Engine Shutdown on Fire System ActivationFast Fill System

CoolantEngineFuelHydraulicTransmission

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.AEHQ5879 (11-07)

AD55B Underground Articulated Truck