Hopper Capacity 5.5 m3

Standard Paving RangeAS3251 Screed 2500-4700 mmAS4251 Screed 2550-5000 mm

Maximum Paving WidthAS3251 Screed 7500 mmAS4251 Screed 7800 mm

AP600Asphalt Paver

®

Cat® 3056E EngineGross Power (SAE J1995) at 2200 rpm 129 kW/173 hpNet Power (ISO 9249) at 2200 rpm 121 kW/162 hp

Operating Weight withAS3251 Screed 17 800 kgAS4251 Screed 18 100 kg

2

AP600 Asphalt PaverThe new AP600 combines fuel efficiency, optimized performance and simplified service,speed and job versatility to maximize productivity.

Cat® 3056E Engine

The diesel engine incorporates theproven technology from previous Cat® engines providing high reliability,durability and easy servicing. MeetsEuropean EU Stage II engine emissionregulations. The high capacity coolingsystem performs efficiently in highambient temperatures. The system pro-vides a cooler working environment forthe tractor and screed operators. pg. 4

Suspension System

The AP600 is equipped with two largetread drive tyres and four front solid-rubber steering bogie wheels providingoptimum ground contact and smoothoperation. pg. 5

Propel System

The hydrostatic propel systemeliminates chains and other mechanicallinkages between the diesel engine andfinal drive components. The propelpump provides optimum displacementenhancing servicing. The front wheelassist increases rimpull powerproviding enhanced traction. pg. 5

Material Handling System

The AP600 provides precise mixdelivery through an advanced materialhandling system. The system efficientlyreduces component wear and minimizesthe potential for mix segregation. pg. 7

Operator’s Station

Two different configurations. The single operator’s station can beelectrically positioned over the entirewidth of the asphalt paver whilst thedual operator station configurationincludes two seats fitted onmechanically sliding semi-platforms.pg. 6

Performance and reliability you expect.Overall dimensions, weights distribution, easy to operate and great performances are the basic features of the new AP600. With many enhanced features and options, the AP600 offers optimum flexibility ranging from new construction, resurfacing and maintenance with either hot and/or modified bituminous mix and aggregate production.

3

Screeds

The AP600 is available with the AS3251 screed and the AS4251 screedboth available with variable frequencytamper and vibrators and with LPG andelectric heating system. All screeds laymaterial to the desired width and depthwhile providing a smooth finish withinitial compaction. pg. 9

Auxiliary Rear Control Panel

The right-hand auxiliary rear controlpanel provides full control for tamperand vibrators frequencies, screed assist & counterbalance adjustment and augers group raising/lowering. pg. 8

Generator (Optional)

The generator provides continuous andsimple control in paving operations forground crew usage. This integratedgenerator supplies power to theelectrically heated screed providinghigh reliability. pg. 8

Serviceability

The AP600 provides excellent access toall machine parts requiring scheduledmaintenance. Large service panelsensure quick and easy inspection of themain parts. Transverse engine mountingprovides ground-level access tohydraulic pumps and the engine coolingsystem. Color-coded and numberedwiring simplifies troubleshooting of theelectrical systems. pg. 10

4

Caterpillar® Diesel EngineModel 3056E ATAAC is a high-tech six cylinder diesel engine designed to provide quietperformance, high reliability, easy servicing and excellent fuel economy.

Turbocharged and air-to-air aftercooling. High horsepower withincreased response time is assured whilekeeping exhaust temperatures low for long hours of continuous operation.

Air-to-air aftercooling (ATAAC).Air intake temperatures are maintained lowand in concert with the tight tolerancecombustion chamber components,maximizing fuel efficiency and minimizingemissions. The system generates significant improvements in air flow inorder to improve efficiency and reduceemissions.

Optimum power. The engine performsat a full-rated gross power of 129 kW(173 hp) at 2200 rpm providing greatperformance and high efficiency inpaving operation. Meets European EU Stage II engineemission regulations.

Low transverse engine mounting.Provide better cooling performance andeasy accessibility for service. Large service panels guarantee easyservicing operations and access to thehydraulic pumps and external enginecomponents.

Fuel injection. Heavy duty unit-typefuel injection and low pressure fuellines minimize opportunity for fuelleaks.

Intake manifold heater. Preheatsincoming air for quick cold weatherstarting.

Cooling system. The high capacitycooling system provides cool intakeair in order to maximize fuelefficiency and minimize emissions.The system promotes operatorcomfort by drawing ambient airthrough the engine compartment andexhausting it on the right side of themachine, away from the operator.

5

Suspension SystemThe wheel-type asphalt paver provides optimum weight distribution, tractive effort assuringgreat performance.

Wheel-type tractor. The AP600 is equipped with two largetread drive tyres. The four front solid-rubber steering bogiewheels are mounted to the front oscillating axle rocker armsfor maximum ground contact and smooth operation over highand low spots.

Wheel base. The long wheel base provides enhanced tractiveeffort and stability on soft base materials.

Two-speed planetary drive. A fixed displacement motor drivetwo-speed planetary drive gearbox in order to provideinfinitely variable speed selection.

Propel SystemEfficient hydrostatic propel system eliminates chains and other mechanical linkagesbetween the engine and final drive components.

Closed-loop hydrostatic propel system. Provides accuratecontrol of propulsion and low-maintenance operation.

Hydrostatic pump. The propel system of AP600 drives the rear wheels with a variable displacement pump and fixeddisplacement axial piston motor directly splined to a servo-assisted two-speed gearbox. The propel pump is infinitelyvariable and electronically controlled for starting and stopping ramps.

Front Wheel Assist. The system adds hydrostatic propel powerto two of the four front steering wheels. The front wheel assistincreases rimpull power, providing enhanced traction.

Speed control. Infinite speed selection within two propelranges: one in working mode and one in travel mode, to select the best speed range according to operating modes.

Propulsion control. An electro-proportional servo-controlprovides machine starting and stopping (for asphalt supply,etc.) with no pre-set working speed variation.

Mechanical benefits. Because the system is completely hydro-static, there are no mechanical linkages such as gear cases,transmissions or chains between the engine power take-off and the drive system. This results in a significant reduction in mechanical parts and less chance for mechanical failure.

Final Drive

Hydraulic Motor

Disk Brake

Caterpillar Diesel Engine

Final Drive

Gearbox with self-lockingdifferential

Disk Brake

Hydraulic Pump

6

Operator’s StationSingle and dual operator stations provide complete control and optimum visibility fromeither side of the operating platform.

Dual operator’s station. The ergonomic dual operator’s stationincorporate two adjustable suspension seats fitted onmechanically sliding semi-platforms.

Enhanced visibility. Both operator seats and console panel aremounted on pivoting pedestals enabling the operator to rotateeither to the left or right. The stations can extend beyond themachine frame for optimum visibility when joint matching orwhile paving other applications where precise control isrequired. With the engine mounted forward and low in frame,the operator is positioned away from engine heat and exhaust.

Control console. The sliding operator’s console panel is fullyequipped with comprehensive controls allowing the operatorto conveniently monitor all machine functions. A multifunctional LCD-display fitted to the console panelprovides detailed information regarding the operatingparameters of machine and engine. A lockable vandal coverprotects console controls.

Canopy option. Two optional canopies are available: foldingcanopy or hydraulic raising canopy. Both canopies providefull width with two side extending wings for optimumcomfort and protection. Canopies can be lowered (manuallyor hydraulically) for easy transportation.

Single operator’s station. The single operator's station can beelectrically positioned over the entire width of the asphaltpaver.

7

Material Handling SystemPrecise mix delivery and productivity through an advanced material handling system.

Hoppers. The independent movement of thetwo hoppers is provided by means of twohydraulic cylinders assuring efficientmaterial flow. Wear-resisting steel providesconveyors and hopper bottom plate for longwear life.

Feeding conveyors. Two feeding conveyorsare independently controlled andproportionally driven by two ultrasonicsensors. Conveyor rotation can also beinverted from either operator’s console panelor from rear screed control boxes. Conveyors have drive chains to maximize the live conveyor area and reduce center linesegregation. This design also provides greaterease of servicing the conveyor drive system. In order to control mix delivery, theoperator sets a speed rate for each conveyorthat will maintain the desired mix level inthe left and right auger chambers.

Optimum productivity. The materialhandling system allows the operatorto maintain an uninterrupted flow ofmaterial from the hoppers to thescreed. The system is responsible for maintaining the proper head ofmaterial - the volume of asphalt infront of and across the length of the screed.

Auger assembly. Two independentlycontrolled augers spread the materialconveyed to both sides. Auger rotationspeed can be varied automatically toensure a homogeneous distribution ofmaterial before the screed. Two ultrasonic wave detectors controlproportional augers movement and can be adjusted from the screed control boxes.Conveyors and augers design eliminatevoids under chain case to minimizesegregation.Augers have outboard mounted motorsfor easy serviceability.

Adjustable height auger assembly.Augers are reversible andhydraulically adjustable in heightproviding benefits to mat quality and better distribution of material in front of the screed. The ability to raise the augerassembly simplifies loading andunloading from a transport vehicle.Also, when working with larger stonemixes, segregation can often beeliminated or minimized by raisingthe augers to allow mix to flowunrestricted under auger assembly.

Outboard Mounted and IndependentlyControlled Augers Motors

Split-SegmentNi-Hard Augers Alloy Steel Drag

Flights and Chains

Independently Controlled FeedingConveyors Motors

8

Industrial, continuous-duty generator. Working range from1250 to 2200 rpm provides high reliability and low soundlevels.

Single control switch. A single control switch located on thetractor’s operating console activates the generator.

Full power. The integrated, tractor-mounted generator providesfull power to the electric screed while the engine is operating from 1250 rpm.

Circuit breaker protection. Extend service life and internalelectronic voltage regulation system provides consistent power.

Optional Generator SystemContinuous-duty integrated design ensures peak performance and high reliability.

Auxiliary Rear Control PanelFull control of tamper and vibrators frequencies for easy ground crew usage.

Right-hand auxiliary rear control panel. Mounted on the rightrear side of the tractor provides constant and easy control forground crew usage during paving operations.

Monitoring and adjustment. Tamper and vibrators frequencies,screed assist & counterbalance system and augers group areconveniently controlled on the panel.

Screed assist. An electro-hydraulic device maintains a constantscreed pressure on the bituminous mix, independently from themix bearing capacity and the paving width. Screed assist andcounterbalance system guarantees superior mat quality andflatness regardless of the speed variations and machine stopsfor material refilling.

Lockable panel cover. The lockable vandal cover efficientlyprotects panel controls.

1 Tamper AdjustmentPotentiometer

2 Adjusting Tamper StartingPotentiometer

3 Vibrator AdjustmentPotentiometer

4 Screed Assist PressureGauge

5 Automatic Screed AssistPressure AdjustmentPotentiometer

6 Screed Assist Stand-by PressureAdjustment Potentiometer

7 Augers Unit Lift/Lower Switch8 Optional Tamper rpm Display

1

4

5

8 7

2 3

6

9

ScreedsElectric heated and LPG hydraulic screeds combine the flexibility to match equipment tooperator preferences or job requirements.

Screed choices. The AP600 is available with the AS3251screed and the AS4251 screed both available with variablefrequency tamper and vibrators and with LPG and electricheating system.

AS3251 screed. Hydraulic power extendible asphalt screed, it paves from 2500 mm to 4700 mm. With solid extensionsadded to both sides, maximum paving width is 7500 mm.

AS4251 screed. Double width hydraulic power extendibleasphalt screed, it paves from 2550 mm to 5000 mm. With solid extensions added to both sides, maximum pavingwidth is 7840 mm.

Tamper and vibrator. For all screed models are operatedautomatically when the asphalt paver advances following a preset ramp. Tamper starting and stopping ramps areadjustable in order to maintain an optimum mat finish evenwith the AP600 stopped during material reloading operations.All screeds are equipped with electronic ignition, automaticand independent adjustment of the smoothing platetemperature for central and each mobil plate.

Electric heating system. The electric heating system featuresa tractor-mounted generator, replaceable heating elements andoperator friendly controls providing an operator-friendlyenvironment. The system is equipped with automaticadjustment of the smoothing plate and tamper bar temperaturefor central, each mobile plate and bolt-on extensions up to 7500 mm. Rapid screed preheating is obtained at low enginerpm for quiet operation. Heavy-duty, user-friendly screedheating control unit with self-diagnostic control is positionedat the rear of the machine for easy ground crew usage.

* Refer to the Screeds Specalogs for more detailed information.

10

Reliability and ServiceabilityReliability and serviceability are integrated into every Caterpillar machine. These important features keep your machine investment profitable.

Large access doors and panels. Ensurequick and easy inspection of the mainparts. The service doors and panels alsoprovide optimum ground levelserviceability and easy access to thehydraulic pumps and external enginecomponents.

Low transversely mounted engine.Provides optimum access to thehydraulic pumps mounted to the rightside of the engine. The front servicepanel features a single wide hingeddoor that provides easy filter andtraction valves serviceability.

Propel pump servicing. The optimumdisplacement of the propel pumpprovide enhanced servicing.

Ergonomic operator stations. Equippedwith rotating seats and console panelprovide optimum comfort, all-aroundvisibility and easy control duringmachine operations.

Hydraulic motors servicing. Hydraulicmotors for augers are fitted outboardfor improved accessibility andserviceability. The auxiliary and frontpower-assist drive solenoid valvesblocks have been conveniently fittedcentrally simplifying checking andadjustments.

Hydraulic hoses and electrical wiringharnesses. Cleanly routed and clampedto reduce wear and provide easy service.

Exposed hoses. Provided with nylonsleeve protection to reduce abrasion.

Vibrator system hydraulic lines.Cat XT™ hoses provide optimumdurability and resistance to damage.

Integrity of the electrical system.Is ensured with the use of high-qualitycomponents.

The Caterpillar electrical standards.Enhance reliability and durability,feature numbered and color-coded wires.Nylon-braided wrap efficiently protectsthe electrical wires.

Electrical schematics. Detailing wirenumbers, wire colors and componentpart numbers are located in the electricalschematic technical publication.

The AP600 asphalt paver has beendesigned for easy service andmaintenance with special attentiongiven to component access.

11AP600 Asphalt Paver specifications 11

Engine

Six cylinder Caterpillar® 3056EATAAC, turbocharged air-to-air after-cooled diesel engine. MeetsEuropean EU Stage II engine emissionregulations.

Gross Power 2200 rpm

SAE J1995 129 kW/173 hp

Rated Net Power 2200 rpm

ISO 9249 121 kW/162 hp

EEC 80/1269 121 kW/162 hp

Bore 100 mm

Stroke 127 mm

Displacement 6 liters

� All engine horsepower (hp) aremetric including front page.

� Net power ratings are tested at the reference conditions for the specified standard.

� Net power advertised is the poweravailable at the flywheel when theengine is equipped with alternator, air cleaner, muffler and fan.

Propel System

� A closed-loop hydrostatic propelsystem provides accurate control ofpropulsion. The propel system of AP600 drives the rear wheels with a variable displacement pump andfixed displacement axial piston motordirectly splined to a servo-assistedtwo-speed gearbox. The propel pumpis infinitely variable and electronicallycontrolled for starting and stoppingramps.

� The front wheel assist provides enhancedtraction increasing rimpull power.

� An electro-proportional servo-controlprovides machine starting and stoppingwith no pre-set working speed variation.

� The high-capacity cooling systempromotes operator comfort bydrawing ambient air through theengine compartment and exhaustingit on the right side of the machine,away from the operator.

Max. Speeds (forward and reverse):Operating 0-60 mpm

Travel 0-15 km/h

Suspension

� The AP600 is equipped with twolarge tread drive tyres. The four front solid-rubber steering bogiewheels are mounted to the frontoscillating axle rocker arms formaximum ground contact and smooth operation over high and lowspots.

� The long wheel base providesenhanced tractive effort and stabilityon soft base materials.

Wheel base 2290 mm

Brakes

Primary Brake Features� Closed-loop hydrostatic drive

provides dynamic braking duringnormal operation.

Parking Brake Features� The hydrostatic drive acts as the

service brake and is hydraulically and proportionally applied via abrake pedal besides the operator'sconsole panel.

� Safety and parking brakes aremechanical multi-disk spring-appliedbrakes.

� Parking brake is automaticallyapplied with the machine in “stand-by” mode.

� When required the brakes can bereleased manually.

Steering

Hydraulic power-assist steering systemprovides smooth, low effort steering bymeans of a steering wheel on theconsole panel.

Features� An automotive-type steering wheel is

used to control direction. The steeringwheel controls the four front wheels bya modulated hydraulic cylinder.

� The four front steering wheels aremounted in pairs of oscillatingbogies, providing maximum groundcontact and smooth operation evenon irregular terrain.

� The wide tread section of the reartyres assures optimummaneuverability and high tractiveperformance on all types of terrainsand slopes.

Turning RadiusMinimum 3900 mm

12 AP600 Asphalt Paver specifications

Electrical System

The 24-volt electrical system consistsof two 12-volt batteries and a 24-volt,55 amp alternator. Integrity of theelectrical system on Cat machines isensured with the use of high-qualitycomponents. The Caterpillar electricalstandards, developed to enhancereliability and durability, featuresoldered, molded, numbered and wireswith nylon-braided wrap to protect theelectrical harness.

All wiring and harnesses are routedaway from areas that may cause wearor damage and are held in place byfasteners.

An onboard generator is fitted when theAP600 is equipped with the AS3251 orAS4251 electric screeds. The generatorprovides 25 kW output to power screedheating and also optional lightingassemblies.

Operator’s Station

The AP600 can be equipped with twodifferent operator's stationconfigurations. Both of theseconfigurations include an optionalfolding canopy cover for operatorcomfort. The single operator's stationcan be electrically positioned over theentire width of the asphalt paver whilstthe dual operator station configurationincludes two seats fitted onmechanically sliding semi-platforms.Both configurations also includeoperator seats and console panelmounted on pivoting pedestals enablingthe operator to rotate either to the leftor right for enhanced visibility.

The sliding operator's console panel ofthe AP600 is fully equipped withcomprehensive controls allowing theoperator to conveniently monitor allmachine functions. In addition amultifunctional LCD-display fitted tothe console panel provides detailedinformation regarding the operatingparameters of the machine and engine.A lockable vandal cover protectsconsole controls.

Controls operating tamper, vibrationand screed assist are also located at the rear of the machine for ground crewusage.

With the engine mounted forward andlow in the frame, the operator hasexcellent visibility into the hopper. The operator is also positioned awayfrom the engine heat and exhaust.

Conveyors and Augers

The independent movement of the twohoppers is obtained by means of twohydraulic cylinders. Two feedingconveyors, manufactured with abrasionresistant-steel, are independentlycontrolled and proportionally driven by two ultrasonic sensors. Conveyor rotation can also be invertedfrom either operator's console panel orfrom rear screed control boxes.

Two independently controlled augersspread the material conveyed to bothsides. Auger rotation speed can bevaried automatically to ensure ahomogeneous distribution of materialbefore the screed. Two ultrasonic wavedetectors control proportional augermovement and can be adjusted from the screed control boxes. The augersare reversible and hydraulicallyadjustable in height providing benefitsto mat quality and better distribution ofmaterial in front of the screed.

Hydraulic System

The propel, material handling andauxiliary systems are operated withelectrically controlled, hydrostaticcomponents. In the event of electricalfailure, each system has manualoperation capability.

The warning lights are activated byabnormal conditions in engine oiltemperature and pressure, enginecoolant temperature and hydraulic oillevel. The warning lights are positionedon the control console for easymonitoring by the operator.

Quick-connect hydraulic test portssimplify system diagnostics.

The hydraulic oil filtering system of the AP600 provides optimumcartridges working life.

13AP600 Asphalt Paver specifications

Grade and Slope ControlOption

The grade and slope controls providefull control for both longitudinal gradeand transverse slope when operating toa single reference. Correction is directlyrelated to the magnitude of the surfacedeviation. Controls are functional fromeither side of the AP600 asphalt paver.

System components may varyaccording to the optional controlsmounted on the AP600.

Screeds

All screeds fitted to AP600 perform the same basic function - to lay materialto the desired width and depth whileproviding a smooth finish with initialcompaction.

The AS3251 screed is hydraulicallyextendible and paves from 2500 mm to4700 mm. With solid extensions addedto both sides, the maximum pavingwidth is 7500 mm. Tamper vibrationfrequency from 0 to 1700 rpm (0 to 28.3 Hz). Smoothing platevibration frequency from 0 to 3400 rpm (0 to 56.7 Hz).

The AS4251 screed is hydraulicallyextendible and paves from 2550 mm to5000 mm. With solid extensions addedto both sides, the maximum pavingwidth is 7840 mm. Tamper vibrationfrequency from 0 to 1700 rpm (0 to 28.3 Hz). Smoothing platevibration frequency from 0 to 3400 rpm (0 to 56.7 Hz).

Tamper and vibrator for all screedmodels are operated automaticallywhen the asphalt paver advancesfollowing a preset ramp. Duringoperation tamper and vibratoradjustment are electronically controlledand can be individually adjusted viapotentiometers located on the rearground control panel. The rear groundcontrol panel also includes an optionalLCD-display indicating tamperfrequency and a potentiometer foradjusting the tamper ramp.Dual LPG high-energy burners, eight inall, are included on all main screedsand each hydraulic extension whereavailable. Four sensors constantlycontrol the temperature throughout theentire width of the screeds. All screedsare equipped with electronic ignition,automatic and independent adjustmentof the smoothing plate temperature forcentral and each mobile plate.

Electric heating system is available forthe AS3251 screed and the AS4251screed. The electric heating systemfeatures a tractor-mounted generator,replaceable heating elements andoperator friendly controls providing anoperator-friendly environment. The system is equipped with automaticadjustment of the smoothing plate andtamper bar temperature for central, eachmobile plate and bolt-on extensions upto 7500 mm. Rapid screed preheating isobtained at low engine rpm for quietoperation. Heavy-duty, user-friendlyscreed heating control unit with self-diagnostic control is positioned at therear of the machine for ground crewusage.

All screed models are equipped withthe screed assist, an electro-hydraulicdevice maintaining a constant screedpressure on the bituminous mix,independently from the mix bearingcapacity and the paving width.

14 AP600 Asphalt Paver specifications

Dimensions

AP600

mm

A Tractor length w/push roller 5000

B Length with push roller and screed 6400

C Transport width without end gates and screed (hopper raised) 2500

D Tractor operating width (hopper lowered) 3200

E Operating height with canopy 3800

mm

F Transport height (no folding exhaust pipe, canopy lowered) 3700

Transport height (folding exhaust pipe, canopy lowered) 3000

G Hopper length 1800

H Truck entry width 2500

B

D

FE

CH

G

A

Weights

kg

Tractor 14 150

with AS3251 screed 17 800

with AS4251 screed 18 100

15AP600 Asphalt Paver specifications

Optional EquipmentSome options listed may be an option in some areas and standard in others. Consult your dealer for specifics.

Folding Operator's Station Canopy.The operator's station canopy covers theentire width of the machine. The canopycan be lowered and raised manuallyfacilitating machine transportation.

Hydraulic Raising Operator's StationCanopy. The operator's station canopycovers the entire width of the machine.The canopy can be lowered and raisedelectrically even with the engine notrunning.

All Wheels Assist (AWD). The systemadds hydrostatic propel power to allfour front steering wheels. The allwheels assist provides total traction.

Grade Control. Paddle-type gradecontrol with small rigid ski that rides onthe pavement surface. The referencesurface may be a flat surface or a wire.

Digital Grade Control. Paddle-type gradecontrol with small rigid ski that rides onthe pavement surface. The system alsoincludes a digital control unit fitted tothe screed handrail. The digital control unit allows theground crew to set the grade of thesurface, in accordance with the siterequirements. The digital control unitcan also be used to control a gradecontrol applied to the opposite side ofthe screed.

Digital Ultrasound Grade Control.A multi-functional sensor provides fullproportional control for longitudinalgrade. The system includes a digitalcontrol unit and an ultrasound sensorthat detects obstacles or breaks in thereference surface (stones, small holes,etc.) and provides a mean average of the surface on which it is operating. The control unit can also be used tocontrol a grade control applied to theopposite side of the screed.

Ultrasound Grade Control. 5 non-contact ultrasound sensors provide fullproportional control for longitudinalgrade. The system includes a digitalcontrol unit and a multiple ultrasoundsensor that detects obstacles or breaksin the reference surface (stones, smallholes, etc.) and provides a meanaverage of the surface on which it isoperating. A sixth sensor, positionedhorizontally, automatically corrects theeffects of variations in the airtemperature so that there is not an errorin the evaluation of the referencedistance.

Combined Ultrasound Grade Control.The system includes a single controlunit with a rigid ski in contact with thereference surface and a non-contactultrasound sensor incorporated formaximum flexibility. The referencesurface may be a flat surface or a wire.

Laser Scanner Grade Control.The system includes a mobile laser unitthat is attached to the paver. The mobileunit is positioned high above thesurface in order to allow it to detectdiscontinuities in the reference surfaceand in the laid material over a distanceadjustable up to 18 meters. The systemalso includes two digital control units,one for adjusting the levelingparameters and controlling a gradecontrol applied to the opposite side ofthe screed, and a second digital controlunit is used to set the operatingparameters of the laser (reading height,range and length of the screed).

Slope Control. Works together with thegrade controls to provide accuratetransverse slope of the material laid.

Digital Slope Control. Works togetherwith the grade controls to provideaccurate transverse slope of the materiallaid. The system also includes a digitalcontrol unit fitted to the screedhandrail. The digital control unit allowsthe ground crew to set the percentageslope of the surface, in accordance withthe site requirements.

Screeds Extension Boxes. 250 mm and 710 mm mechanical extensionsavailable for AS3251 and AS4251screeds.

Rotating Side Screed End Gates (forAS3251 and AS4251). Bolted on hingedend gates reduce screed width for easytransportation.

Motorized Screed Camber Adjustment(for AS3251 and AS4251). Electric motormodifies screed plate camber anglesbetween +4.5% and -2.5%.

Supplementary Working LightsPackage with Xenon Lights (24V).Consists of four variable position xenonbeam flood lights, two mountedforward and two mounted to the rearilluminating work area.

Supplementary Working LightsPackage (230V) available only for AP600 with AS3251 and AS4251 Electric Heated Screeds. Consists offour variable position sealed beamflood lights, two mounted forward andtwo mounted to the rear illuminatingwork area.

Automatic Greasing System for Tractorand for Tractor & Screed. Centralizedand automatic lubrication of conveyors,augers, tamper and vibrator shafts.

Refueling Pump. An electric self-priming pump permits machine-refueling on-the-go or with engine not running.

®

HEHG3400-1 (03/2007) hr

AP600 Asphalt Paver

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

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

© 2007 Caterpillar -- All rights reserved

CAT, CATERPILLAR, 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.