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Overview

Responsible, productive earthmoving machines, built to last.

Engine

Units:
Tractor Engine Cat® C18 ACERT™ Cat® C18 ACERT™ Less
Scraper Engine Cat C15 ACERT Cat C15 ACERT Less

Tractor Engine

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

Scraper Engine

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

Scraper Bowl

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

Transmission

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

Hydraulics

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

Steering

Width - 180° Turn, right 44.62 ft 13.6 m Less
Width - 180° Turn, left 47.57 ft 14.5 m Less
Steering Angle – Right 90° 90° Less
Steering Angle – Left 85° 85° Less

Service Refill Capacities – Tractor

Crankcase 17.0 gal 64.0 L Less
Transmission 36.0 gal 136.0 L Less
Differential 36.0 gal 136.0 L Less
Final Drive (per side) 6.0 gal 23.0 L Less
Cooling System 33.0 gal 125.0 L Less
Hydraulic Reservoir 80.0 gal 303.0 L Less
Wheel Coolant (each) 34.3 gal 130.0 L Less
Windshield Washer 0.5 gal 2.0 L Less

Service Refill Capacities – Scraper

Fuel Tank - 657G 421.9 gal 1597.0 L Less
Crankcase 10.0 gal 38.0 L Less
Transmission 32.0 gal 121.0 L Less
Differential 44.0 gal 168.0 L Less
Final Drive (per side) 7.9 gal 30.0 L Less
Wheel Coolant (each) 34.3 gal 130.0 L Less
Cooling System 24.0 gal 89.0 L Less

Dimensions

Width – Overall Machine 171.0 in 4344.0 mm Less
Width – Tractor 141.77 in 3601.0 mm Less
Width - rear tire center lines 110.75 in 2813.0 mm Less
Width – Inside of Bowl 145.0 in 3683.0 mm Less
Width - outside bowl (shipping width) 154.0 in 3914.0 mm Less
Height – Overall Shipping 185.4 in 4710.0 mm Less
Height – Top of Cab 146.14 in 3712.0 mm Less
Ground Clearance – Tractor 25.39 in 645.0 mm Less
Front of Tractor to Front Axle 148.4 in 3770.0 mm Less
Axle to Vertical Hitch Pin 23.94 in 608.0 mm Less
Height – Scraper Blade Maximum 26.77 in 680.0 mm Less
Wheelbase 391.97 in 9956.0 mm Less
Length - overall machine 636.38 in 16164.0 mm Less
Rear Axle to Rear of Machine 95.98 in 2438.0 mm Less
Bail Length - max. (push-pull) 72.28 in 1836.0 mm Less

Weights - Standard, tandem

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

Weights - Push-Pull

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

Operator Station

Redesigned for enhanced operator comfort and productivity


Power Train - Engine

Heavy duty diesel technology for performance and efficiency


Power Train - Transmission

Integrated electronics monitor the power train extending component life


Electronic Controls

Optimized machine performance and advanced diagnostic capabilities


Cushion Hitch

Superior design and construction delivers long term durability


Scraper Bowl

Designed for fast and precise loading and controlled ejection


Coal Bowl

Purpose-built to meet application specific needs


Push-Pull

Two machines acting as a single self-loading system


Serviceability

Easy to Maintain - Easy to Service


Support

Cat Dealer services


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

• Push-pull arrangement

• Steering, secondary

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

• Lock, Steering

• Push-Pull Arrangement with Rear Radiator Guard

• Product Link

Cat® Dealer Service

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