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EngineSuspensionTransmissionSix cylinder Caterpillar C6.6 withACERT Technology, turbochargedair-to-air after-cooled diesel engine.Meets European EU Stage IIIA engineemission regulations.Gross PowerSAE J1995Net PowerISO 9249EEC 80/1269BoreStrokeDisplacement2200 rpm129.5 kW/174 hp2200 rpm121.9 kW/163.5 hp121.9 kW/163.5 hp105 mm127 mm6.6 litersAll engine horsepowers are metricincluding front cover.Net power ratings are tested at thereference conditions for the specifiedstandard.Net power advertised is the poweravailable at the flywheel when theengine is equipped with alternator,air cleaner, muffler and fan.Derating is not required up to analtitude of 3000 m.The high-speed Mobil-tracundercarriage consists of a durable,high-strength rubber belt with a thickouter cover that includes five internallayers of flexible steel cable. The trackis 3023 mm long and 457 mm wide.Drive traction is provided by ahydraulic tensioning cylinder withaccumulator that maintains frictionbetween the belt and the drive wheels.Rubber-coated steel mid-wheelsprovide smooth ride and high tractionefficiency by distributing weight overthe entire length of the belt.The steel track undercarriage consistsof four 241 mm diameter track rollers,a special rear, four roller 152 mmdiameter bogey, and two 152 mmdiameter single roller return idlers perside. Rollers are bogied in pairs andeach pair is articulated for optimumleveling capability. Rollers ride onCaterpillar ® D3 track rails. Track railsare sealed, lubricated and include a splitmaster link for quick track removal andinstallation. Track tensioning isprovided by a parallel link swing armdesign that provides constant hydraulicpressure. Track tension is maintainedwithout manual adjustment. Recoilforces are controlled by check andrelief valves.Track BaseMTS undercarriage 3020 mmSteel Track undercarriage 3060 mmThe Mobil-trac drive system utilizestwo dual path hydrostatic pumps andtwo fixed displacement motors.The pumps are infinitely variable withelectronic displacement controls (EDC)for steering and speed. Single speedmotors drive two speed planetary gearboxes to provide two propel ranges.The drive system is equipped with twoswitches located at the operator’sstation control console. The twoswitches are used as manual overridesand are directly linked to EDC’s.The steel track drive system utilizestwo dual path hydrostatic pumps andtwo variable displacement motors.The pumps are infinitely variable withelectronic displacement controls (EDC)for steering and speed. The two speedmotors drive single speed planetarygear boxes to provide two propelranges. The drive system is equippedwith two switches located at theoperator’s station control console.The two switches are used as manualoverrides and are directly linked toEDC’s.Speeds (forward and reverse)PavingMobil-trac0-25 mpmSteel Track0-25 mpmTravelMobil-trac14.8 km/hSteel Track5.3 km/hBrakesSteeringElectrical SystemPrimary Brake Features A closed-loop hydrostatic systemprovides dynamic braking duringnormal operation.Parking Brake Features Safety and parking brakes systemincludes a spring applied,hydraulically released brake which isactuated by a switch on the operator’sstation control console.Hydraulic power assist steering systemprovides smooth, low effort steering bymeans of a steering wheel. Electric overhydraulic dual path differential steeringassures precise machine control.Steering commands are independent ofpropel speed.Three steering modes including pave,travel and maneuver are selectable atthe operator’s control console.The 24-volt DC electrical system isdesigned for improved durability,reliability and ease of service. Two12-volt batteries with 1400 crankingamps each and a 80-amp alternator areused in the system. Wires are loomedwith vinyl-coated nylon braid toimprove the overall integrity of theelectrical system and to protect againstabrasion.10 AP655D Asphalt Paver specifications