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Overview

657G Wheel Tractor Scraper. Responsible, productive earthmoving machines, built to last.

Engine

Units:
Tractor Engine C18 ACERT 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 5.4 in 137.0 mm Less
Stroke 6.8 in 171.5 mm Less
Displacement 928.0 in3 15.2 L Less

Scraper Bowl

Scraper Capacity: Heaped 44.0 yd3 33.6 m3 Less
Rated Load 104058.0 lb 47200.0 kg Less
Capacity Struck 32.0 yd3 24.5 m3 Less
Depth of Cut - max. 16.7 in 425.0 mm Less
Width of Cut, to Router Bits 12.7 in 3846.0 mm Less
Ground Clearance - max. 21.5 in 545.0 mm Less
Cutting Edge - thickness 0.88 in. 22.0 mm Less
Hyd. Penetration Force - 657G 121000.0 lb 542.0 kN Less
Depth of Spread - max. 26.77 in 680.0 mm Less
Apron Opening 92.0 in 2340.0 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 3.4 mph 5.5 km/h Less
2 Forward 6.2 mph 10.0 km/h Less
3 Forward 6.8 mph 10.9 km/h Less
4 Forward 9.2 mph 14.8 km/h Less
5 Forward 12.3 mph 19.8 km/h Less
6 Forward 16.7 mph 26.9 km/h Less
7 Forward 22.4 mph 36.0 km/h Less
8 Forward 36.0 mph 55.7 km/h Less
Reverse 6.0 mph 9.7 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 115.0 gal/min 435.0 L/min Less
Scraper Circuit 153.0 gal/min 579.0 L/min Less
Cushion Hitch Circuit 15.0 gal/min 56.0 L/min Less
Secondary Steering Circuit 113.6 gal/min 430.0 L/min Less
Relief Valve - Steering Circuit 1959.0 psi 13500.0 kPa Less
Relief Valve - Implement Circuit 2000.0 psi 13800.0 kPa Less
Compensator Setting - Cushion Hitch Circuit 3000.0 psi 20670.0 kPa Less

Steering

Width - 180° Turn, right 45.3 ft 13.82 m Less
Width - 180° Turn, left 48.3 ft 14.73 m Less
Steering Angle – Right 90° 90° Less
Steering Angle – Left 85° 85° Less

Service Refill Capacities – Tractor

Crankcase 16.9 gal 64.0 L Less
Transmission 36.0 gal 136.0 L Less
Differential 36.5 gal 138.0 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 1.5 gal 6.0 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 43.0 gal 163.0 L Less
Final Drive (per side) 7.8 gal 29.5 L Less
Wheel Coolant (each) 34.3 gal 130.0 L Less
Cooling System 23.3 gal 88.0 L Less

Dimensions

Width – Overall Machine 171.02 in 4344.0 mm Less
Width – Tractor 141.77 in 3601.0 mm Less
Width - rear tire center lines 103.66 in 2633.0 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 185.43 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 148.42 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 146861.0 lb 66615.0 kg Less
Tractor Shipping 88117.0 lb 39969.0 kg Less
Scraper Shipping 58745.0 lb 26646.0 kg Less
Total Operating - empty 149417.0 lb 67774.0 kg Less
Front Axle 89650.0 lb 40665.0 kg Less
Rear Axle 59767.0 lb 27110.0 kg Less
Total Operating - loaded 253420.0 lb 114949.0 kg Less
Front Axle Weight - loaded 129244.0 lb 58624.0 kg Less
Rear Axle Weight - loaded 124176.0 lb 56325.0 kg Less

Weights - Push-Pull

Total Shipping 155194.0 lb 70395.0 kg Less
Tractor Shipping 92644.0 lb 42023.0 kg Less
Scraper Shipping 62550.0 lb 28372.0 kg Less
Total Operating - empty 157750.0 lb 71554.0 kg Less
Front Axle 94170.0 lb 42715.0 kg Less
Rear Axle 63580.0 lb 28839.0 kg Less
Total Operating - loaded 261753.0 lb 118729.0 kg Less
Front Axle - loaded 133494.0 lb 60552.0 kg Less
Rear Axle (Loaded) 128259.0 lb 58177.0 kg Less

Power Train – Engine

The C18 and the C15 engines with ACERT™ Technology works at the point of combustion to optimize engine performance. Matched with the torque converter and power shift transmission, it provides years of dependable and efficient service.


Power Train – Transmission

Electronic controls switch from converter drive to direct drive based on gear selection, maximizing efficiency and power application. Tractor and scraper engines are synchronized for smooth operation and longer service life.


Structures

Superior structural design delivers stateof- the-art ride, capacity, and material control while assuring the durability and reliability customers expect from Caterpillar.


Operator Station

Convenient control placement and a comfortable work environment are keys to high productivity. Features include electro-hydraulic controls, an available air seat suspension and advanced instrumentation.


Electronic Controls

The electronic controls respond to operator commands and input from on-board sensors to optimize machine performance. In addition, the electronic controls provide advanced diagnostic capabilities that result in better machine availability.


Scraper Bowl

Caterpillar® Scraper bowls are designed for excellent material flow and retention for fast cycle times and high productivity.


Push-Pull Arrangement

For maximum production capability, Caterpillar offers an optional push-pull arrangement for the 657G, which allows two push-pull scrapers to act as a selfloading machine.


Auger Arrangement

Provides self-loading capability with the same wide material appetite as an open bowl machine.


Serviceability

Grouped service points and easy access, the latest electronic monitoring systems and rugged Caterpillar components simplify maintenance and minimize downtime.


Customer Support

Caterpillar dealers have the parts and service capabilities to keep your wheel tractor-scrapers working.