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Flywheel Power - Tractor/Scraper447 kW (600 hp) / 337 kW (451 hp)
Scraper Capacity - Heaped44 yd³ (33.6 m³)
Top Speed - Loaded33 mile/h (55.7 km/h)
Tractor EngineCat C18
Quick loading, high travel speeds and the ability to load and dump on the run yield fast cycle times, allowing Cat® Wheel Tractor-Scrapers to deliver a high rate of productivity.


Flywheel Power - Tractor/Scraper447 kW (600 hp) / 337 kW (451 hp)
Scraper Capacity - Heaped44 yd³ (33.6 m³)
Top Speed - Loaded33 mile/h (55.7 km/h)
Tractor EngineCat C18
Net Power421/447 kW 564/600 hp
Scraper EngineCat C15
Net Power306/337 kW 410/451 hp
Rated Load104000 lb (47174 kg)
Gross Power - Gears 1-2596 HP (445 kW)
Gross Power - Gears 3-8632 HP (471 kW)
Gross Power - Gears 1-2437 HP (326 kW)
Gross Power - Gears 3-8478 HP (356 kW)
Net Power - Gears 1-2564 HP (421 kW)
Net Power - Gears 3-8600 HP (447 kW)
Net Power - Gears 1-2410 HP (306 kW)
Net Power - Gears 3-8451 HP (337 kW)
Total Shipping147959 lb (67113 kg)
Tractor Shipping87717 lb (39788 kg)
Scraper Shipping60242 lb (27325 kg)
Total Operating - Empty150761 lb (68384 kg)
Front Axle87924 lb (39881 kg)
Rear Axle62837 lb (28503 kg)
Total Operating - Loaded254761 lb (115558 kg)
Front Axle Weight - Loaded128246 lb (58172 kg)
Rear Axle - Weight - Loaded126515 lb (57386 kg)
Total Shipping160505 lb (72804 kg)
Tractor Shipping93635 lb (42472 kg)
Scraper Shipping64068 lb (29061 kg)
Total Operating - Empty160505 lb (72804 kg)
Front Axle93842 lb (42566 kg)
Rear Axle66663 lb (30238 kg)
Total Operating - Loaded264505 lb (119978 kg)
Front Axle - Loaded134165 lb (60856 kg)
Rear Axle - Loaded130340 lb (59121 kg)
Width - Overall Machine171 in (4344 mm)
Width - Tractor141.77 in (3601 mm)
Width - Rear Tire Center Lines110.75 in (2813 mm)
Width - Inside of Bowl145 in (3683 mm)
Width - Outside Bowl - Shipping Width154 in (3914 mm)
Height - Overall Shipping185.4 in (4710 mm)
Height - Top of Cab146.14 in (3712 mm)
Ground Clearance - Tractor25.39 in (645 mm)
Front of Tractor to Front Axle148.4 in (3770 mm)
Axle to Vertical Hitch Pin23.94 in (608 mm)
Height - Scraper Blade Maximum26.77 in (680 mm)
Wheel Base391.97 in (9956 mm)
Length - Overall Machine636.38 in (16164 mm)
Rear Axle - Rear of Machine95.98 in (2438 mm)
Bail Length - Maximum (Push-Pull)72.28 in (1836 mm)
Capacity - Struck32 yd³ (24.5 m³)
Depth of Cut - Maximum17 in (440 mm)
Width - Cut - To Router Bits12.7 in (3846 mm)
Ground Clearance - Maximum23 in (580 mm)
Cutting Edge Thickness1.8 in (45 mm)
Hyd. Penetration Force - 657G121000 lb (542 kN)
Depth of Spread - Maximum26 in (660 mm)
Apron Opening92 in (2337 mm)
Apron Closure Force39200 lb (176 kN)
Bore5.7 in (145 mm)
Bore5.5 in (140 mm)
Stroke7.2 in (183 mm)
Stroke6.5 in (165 mm)
Displacement1105 in³ (18.1 l)
Displacement928 in³ (15.2 l)
1 Forward3.5 mile/h (5.6 km/h)
2 Forward6.3 mile/h (10.2 km/h)
3 Forward7.8 mile/h (12.5 km/h)
4 Forward10.6 mile/h (17 km/h)
5 Forward14.1 mile/h (22.7 km/h)
6 Forward19 mile/h (30.6 km/h)
7 Forward25.6 mile/h (41.2 km/h)
8 Forward34.6 mile/h (55.7 km/h)
Reverse6.1 mile/h (9.8 km/h)
Width - 180° Turn - Right44.62 ft (13.6 m)
Width - 180° Turn - Left47.57 ft (14.5 m)
Steering Angle - Right90°
Steering Angle - Left85°
Crankcase17 gal (US) (64 l)
Transmission36 gal (US) (136 l)
Differential36 gal (US) (136 l)
Final Drive - Each6 gal (US) (23 l)
Cooling System33 gal (US) (125 l)
Hydraulic Reservoir80 gal (US) (303 l)
Wheel Coolant - Each34.3 gal (US) (130 l)
Windshield Washer0.5 gal (US) (2 l)
Bowl Cylinder Bore9.25 in (235 mm)
Bowl Cylinder Stroke37.4 in (950 mm)
Apron Cylinder Bore9.25 in (235 mm)
Apron Cylinder Stroke29.92 in (760 mm)
Ejector Cylinder Bore10.24 in (260 mm)
Ejector Cylinder Stroke76.61 in (1946 mm)
Steering Circuit99.9 gal/min (378 l/min)
Scraper Circuit153 gal/min (579 l/min)
Cushion Hitch Circuit12.7 gal/min (48 l/min)
Secondary Steering Circuit64.2 gal/min (243 l/min)
Relief Valve - Steering Circuit1959 psi (13500 kPa)
Relief Valve - Implement Circuit1999 psi (13780 kPa)
Compensator Settings - Cushion Hitch Circuit3002 psi (20700 kPa)
Fuel Tank - 657G421.9 gal (US) (1597 l)
Crankcase10 gal (US) (38 l)
Transmission32 gal (US) (121 l)
Differential44 gal (US) (168 l)
Final Drive - Each7.9 gal (US) (30 l)
Wheel Coolant - Each34.3 gal (US) (130 l)
Cooling System24 gal (US) (89 l)

Benefits and Features

  • Tandem engine machines improve cycle times on grades and in slippery underfoot conditions. Also improves the machine's loading characteristics in tough materials like clay.
  • Transmission Torque Converter - Increases rim pull and shortens load times, and eliminates engine stall to efficiently deliver power to the ground and move more dirt.
  • An auger mechanism in the bowl improves self-loading capabilities by lifting material off of the cutting edge and carrying it to the top of the load.

  • Proven Cat engines provide the power and torque rise for excellent lugging in tough loading conditions.
  • Variable injection timing and duration improve fuel efficiency and cold starting, decrease smoke and emissions.
  • Throttle back-up provides the operator with a preset engine speed control in the event of a throttle input failure.
  • Throttle lock allows the operator the capability of locking both engines at any operating level.
  • Directional shift management prevents the operator from shifting out of neutral when engine rpm is above a preset level.
  • Controlled throttle shifting increases drive train life by reducing the fuel injection rate just prior to shifting.
  • The aftercooler lowers intake charge air temperature to increase power and reduce thermal stresses that can cause premature wear of pistons, rings, and liners.
  • Engine oil cooler maintains optimum oil temperature for proper cooling and longer lubricant life.
  • Laminated thermal-shield improves tractor protection by reducing the temperature of exposed engine surfaces, cools engine and operating compartments, extends hose and wiring life.
  • Eight-speed power shift transmission provides automatic, on-the-go shifting for simple, reliable operation.
  • Top gear control helps prevent shifting above a programmed gear to better regulate haul road speeds.
  • The hydraulic retarder extends brake life when working on severe, downhill slopes.
  • Scraper driveline guard protects the output case, differential and ejector cylinder to help minimize driveline maintenance costs.

  • Standard rubber-mounted cab reduces noise and vibration for comfortable, shift-long operation.
  • Hydraulic servo-steering system provides low-effort automotive feel and excellent maneuverability.
  • Tilt steering column adjusts to five different positions for operator comfort and control.
  • A suspension seat delivers a comfortable ride.
  • The Electronic Monitoring System checks important machine systems and provides a three-level warning.
  • Air conditioning to keep the operator comfortable.
  • The electronically controlled cushion hitch design dampens shocks to provide a smoother ride, and locks down for positive control of the cutting edge during loading and dumping.

  • Service points for the engine are grouped on the right side for easy access. Service platforms and numerous handholds improve access and safety. Folded core radiator allows individual cores to be replaced as modules, reducing service time and expense.
  • Diagnostic connector, with the aid of a service tool, allows quick analysis of the starting and charging circuits.
  • Electronic ground level shutoff enables the operator to stop the engine from the ground with the flip of a switch.
  • Centralized lubrication blocks for the hitch and steering reduce lube time.

  • Wide brake shoes and brake drums improve brake performance and reduce brake and drum wear.
  • Separate front and rear circuits. Secondary brakes engage automatically if service pressure drops.
  • Parking Brake features a spring-applied, air-released mechanism that operates the service brakes.
  • Differential Lock improves traction in slippery conditions.

Standard Equipment

  • Standard and optional equipment may vary. Consult your Cat dealer for details.
  • Alarm, backup
  • Alternator, 80 amp - tractor engine
  • Alternator, 50 amp - scraper engine
  • Batteries Tractor (4), 12V Maintenance Free, High Output
  • Batteries Scraper (4), 12V Maintenance Free, High Output
  • Electrical System, 24V
  • Lighting System - Tractor
  • Lighting System - Scraper
  • Starting Receptacle - tractor and scraper engines
  • Air Conditioner (includes heater and defroster)
  • Automotive style fuse panel with fuse puller
  • Cigarette Lighter and Ashtray
  • Coat Hook
  • Cup holder
  • Diagnostic Connection Port (12V)
  • Dome Courtesy Light
  • Engine speed lock
  • Fan defroster
  • Gauge Group
  • Horn
  • Implement Control Joystick
  • Rearview Mirrors
  • Radio Ready
  • 2 radio openings, speakers, and 5-amp converter
  • ROPS Cab with Sound Suppression and Pressurization
  • Static Seatbelt
  • Scraper Engine Controls
  • Seat, Air Suspension, Caterpillar Comfort, cloth
  • Steering Wheel - tilt and telescoping
  • Storage Compartment
  • Transmission Hold
  • Windows - sliding side, swing out
  • Windshield - laminated glass
  • Windshield Wiper/Washer - front and rear
  • Wrist Rest/Grab Handle
  • Tractor
  • Scraper

Optional Equipment

  • Standard and optional equipment may vary. Consult your Cat dealer for details.
  • Secondary Steering Arrangement
  • Steering lock – external
  • Extended Life Coolant, -50° C (-58° F)