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657G

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Overview

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.

Engine

  • Tractor Engine Cat C18 Cat C18
  • Scraper Engine Cat C15 Cat C15

Tractor Engine

  • Flywheel Power - Tractor/Scraper 447 kW (600 hp) / 337 kW (451 hp) 447 kW (600 hp) / 337 kW (451 hp)
  • Net Power 421/447 kW 564/600 hp 421/447 kW 564/600 hp
  • Gross Power - Gears 1-2 596.0 HP 445.0 kW
  • Gross Power - Gears 3-8 632.0 HP 471.0 kW
  • Net Power - Gears 1-2 564.0 HP 421.0 kW
  • Net Power - Gears 3-8 600.0 HP 447.0 kW
  • Bore 5.7 in 145.0 mm
  • Stroke 7.2 in 183.0 mm
  • Displacement 1105.0 in³ 18.1 l

Scraper Engine

  • Net Power 306/337 kW 410/451 hp 306/337 kW 410/451 hp
  • Gross Power - Gears 1-2 437.0 HP 326.0 kW
  • Gross Power - Gears 3-8 478.0 HP 356.0 kW
  • Net Power - Gears 1-2 410.0 HP 306.0 kW
  • Net Power - Gears 3-8 451.0 HP 337.0 kW
  • Bore 5.5 in 140.0 mm
  • Stroke 6.5 in 165.0 mm
  • Displacement 928.0 in³ 15.2 l

Scraper Bowl

  • Scraper Capacity - Heaped 44.0 yd³ 33.6 m³
  • Rated Load 104000.0 lb 47174.0 kg
  • Capacity - Struck 32.0 yd³ 24.5 m³
  • Depth of Cut - Maximum 17.0 in 440.0 mm
  • Width - Cut - To Router Bits 12.7 in 3846.0 mm
  • Ground Clearance - Maximum 23.0 in 580.0 mm
  • Cutting Edge Thickness 1.8 in 45.0 mm
  • Hyd. Penetration Force - 657G 121000.0 lb 542.0 kN
  • Depth of Spread - Maximum 26.0 in 660.0 mm
  • Apron Opening 92.0 in 2337.0 mm
  • Apron Closure Force 39200.0 lb 176.0 kN

Transmission

  • Top Speed - Loaded 33.0 mile/h 55.7 km/h
  • 1 Forward 3.5 mile/h 5.6 km/h
  • 2 Forward 6.3 mile/h 10.2 km/h
  • 3 Forward 7.8 mile/h 12.5 km/h
  • 4 Forward 10.6 mile/h 17.0 km/h
  • 5 Forward 14.1 mile/h 22.7 km/h
  • 6 Forward 19.0 mile/h 30.6 km/h
  • 7 Forward 25.6 mile/h 41.2 km/h
  • 8 Forward 34.6 mile/h 55.7 km/h
  • Reverse 6.1 mile/h 9.8 km/h

Hydraulics

  • Bowl Cylinder Bore 9.25 in 235.0 mm
  • Bowl Cylinder Stroke 37.4 in 950.0 mm
  • Apron Cylinder Bore 9.25 in 235.0 mm
  • Apron Cylinder Stroke 29.92 in 760.0 mm
  • Ejector Cylinder Bore 10.24 in 260.0 mm
  • Ejector Cylinder Stroke 76.61 in 1946.0 mm
  • Steering Circuit 99.9 gal/min 378.0 l/min
  • Scraper Circuit 153.0 gal/min 579.0 l/min
  • Cushion Hitch Circuit 12.7 gal/min 48.0 l/min
  • Secondary Steering Circuit 64.2 gal/min 243.0 l/min
  • Relief Valve - Steering Circuit 1959.0 psi 13500.0 kPa
  • Relief Valve - Implement Circuit 1999.0 psi 13780.0 kPa
  • Compensator Settings - Cushion Hitch Circuit 3002.0 psi 20700.0 kPa

Steering

  • Width - 180° Turn - Right 44.62 ft 13.6 m
  • Width - 180° Turn - Left 47.57 ft 14.5 m
  • Steering Angle - Right 90° 90°
  • Steering Angle - Left 85° 85°

Service Refill Capacities - Tractor

  • Crankcase 17.0 gal (US) 64.0 l
  • Transmission 36.0 gal (US) 136.0 l
  • Differential 36.0 gal (US) 136.0 l
  • Final Drive - Each 6.0 gal (US) 23.0 l
  • Cooling System 33.0 gal (US) 125.0 l
  • Hydraulic Reservoir 80.0 gal (US) 303.0 l
  • Wheel Coolant - Each 34.3 gal (US) 130.0 l
  • Windshield Washer 0.5 gal (US) 2.0 l

Service Refill Capacities - Scraper

  • Fuel Tank - 657G 421.9 gal (US) 1597.0 l
  • Crankcase 10.0 gal (US) 38.0 l
  • Transmission 32.0 gal (US) 121.0 l
  • Differential 44.0 gal (US) 168.0 l
  • Final Drive - Each 7.9 gal (US) 30.0 l
  • Wheel Coolant - Each 34.3 gal (US) 130.0 l
  • Cooling System 24.0 gal (US) 89.0 l

Dimensions

  • Width - Overall Machine 171.0 in 4344.0 mm
  • Width - Tractor 141.77 in 3601.0 mm
  • Width - Rear Tire Center Lines 110.75 in 2813.0 mm
  • Width - Inside of Bowl 145.0 in 3683.0 mm
  • Width - Outside Bowl - Shipping Width 154.0 in 3914.0 mm
  • Height - Overall Shipping 185.4 in 4710.0 mm
  • Height - Top of Cab 146.14 in 3712.0 mm
  • Ground Clearance - Tractor 25.39 in 645.0 mm
  • Front of Tractor to Front Axle 148.4 in 3770.0 mm
  • Axle to Vertical Hitch Pin 23.94 in 608.0 mm
  • Height - Scraper Blade Maximum 26.77 in 680.0 mm
  • Wheel Base 391.97 in 9956.0 mm
  • Length - Overall Machine 636.38 in 16164.0 mm
  • Rear Axle - Rear of Machine 95.98 in 2438.0 mm
  • Bail Length - Maximum (Push-Pull) 72.28 in 1836.0 mm

Weights - Standard, Tandem

  • Total Shipping 147959.0 lb 67113.0 kg
  • Tractor Shipping 87717.0 lb 39788.0 kg
  • Scraper Shipping 60242.0 lb 27325.0 kg
  • Total Operating - Empty 150761.0 lb 68384.0 kg
  • Front Axle 87924.0 lb 39881.0 kg
  • Rear Axle 62837.0 lb 28503.0 kg
  • Total Operating - Loaded 254761.0 lb 115558.0 kg
  • Front Axle Weight - Loaded 128246.0 lb 58172.0 kg
  • Rear Axle - Weight - Loaded 126515.0 lb 57386.0 kg

Weights - Push-Pull

  • Total Shipping 160505.0 lb 72804.0 kg
  • Tractor Shipping 93635.0 lb 42472.0 kg
  • Scraper Shipping 64068.0 lb 29061.0 kg
  • Total Operating - Empty 160505.0 lb 72804.0 kg
  • Front Axle 93842.0 lb 42566.0 kg
  • Rear Axle 66663.0 lb 30238.0 kg
  • Total Operating - Loaded 264505.0 lb 119978.0 kg
  • Front Axle - Loaded 134165.0 lb 60856.0 kg
  • Rear Axle - Loaded 130340.0 lb 59121.0 kg

MAXIMIZE PERFORMANCE

  • 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.

BUILT TO PERFORM

  • 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.

OPERATOR COMFORT AND CONTROL

  • 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.

SAVE ON MAINTENANCE TIME

  • 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.

BUILT-IN SAFETY FEATURES

  • 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.

657G Standard Equipment

ELECTRICAL

  • 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

OPERATOR ENVIRONMENT

  • 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

POWER TRAIN

  • Tractor
  • Scraper

OTHER STANDARD EQUIPMENT

  • Tractor
  • Scraper

657G Optional Equipment

STEERING ARRANGEMENTS

  • Secondary Steering Arrangement

INTEGRATED TECHNOLOGIES

  • Product Link

OTHER ATTACHMENTS

  • Steering lock – external

AMBIENT CAPABILITY ARRANGEMENTS

  • Extended Life Coolant, -50° C (-58° F)

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