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657G Scrapers

Quick loading, high travel speeds and the ability to load and dump on the run yield fast cycle times, allowing Caterpillar® Wheel Tractor-Scrapers to consistently deliver high productivity.

Overview and Specifications

Tractor Engine
Displacement 1105 in3 / 18.1 L
Net Power - Gears 1-2 564 hp / 421 kW
Net Power - Gears 3-8 600 hp / 447 kW
Gross Power - Gears 1-2 596 hp / 445 kW
Gross Power - Gears 3-8 632 hp / 471 kW
Bore 5.7 in / 145 mm
Stroke 7.2 in / 183 mm
Net Power - Tractor/Scraper 421 kW (564 hp) / 306 kW (410 hp)
Net Power 421/447 kW 564/600 hp

Scraper Bowl
Depth of Cut - max. 16.7 in / 425 mm
Ground Clearance - max. 21.5 in / 545 mm
Cutting Edge - thickness .88 in. / 22 mm
Depth of Spread - max. 26.77 in / 680 mm
Apron Opening 92 in / 2340 mm
Apron Closure Force 39200 lb / 176 kN
Capacity Heaped 44 yd3 / 33.6 m3
Rated Load 104058 lb / 47200 kg
Capacity Struck 32 yd3 / 24.5 m3
Hyd. Penetration Force - 657G 121000 lb / 542 kN
Width of Cut, to Router Bits 12.7 in / 3846 mm

Scraper Engine
Bore 5.4 in / 137 mm
Stroke 6.8 in / 171.5 mm
Displacement 928 in3 / 15.2 L
Gross Power - Gears 1-2 437 hp / 326 kW
Gross Power - Gears 3-8 478 hp / 356 kW
Net Power - Gears 1-2 410 hp / 306 kW
Net Power - Gears 3-8 451 hp / 337 kW
Net Power 306/337 kW 410/451 hp

Weights - Standard, tandem
Total Shipping 146861 lb / 66615 kg
Tractor Shipping 88117 lb / 39969 kg
Scraper Shipping 58745 lb / 26646 kg
Total Operating - empty 149417 lb / 67774 kg
Front Axle 89650 lb / 40665 kg
Rear Axle 59767 lb / 27110 kg
Total Operating - loaded 253420 lb / 114949 kg
Front Axle Weight - loaded 129244 lb / 58624 kg
Rear Axle Weight - loaded 124176 lb / 56325 kg

Weights - Push-Pull
Total Shipping 155194 lb / 70395 kg
Tractor Shipping 92644 lb / 42023 kg
Scraper Shipping 62550 lb / 28372 kg
Total Operating - empty 157750 lb / 71554 kg
Front Axle 94170 lb / 42715 kg
Rear Axle 63580 lb / 28839 kg
Total Operating - loaded 261753 lb / 118729 kg
Front Axle - loaded 133494 lb / 60552 kg
Rear Axle (Loaded) 128259 lb / 58177 kg

Dimensions
Width - overall machine 171.02 in / 4344 mm
Width - rear tire center lines 103.66 in / 2633 mm
Width - inside of bowl 145 in / 3683 mm
Height - overall shipping 185.43 in / 4710 mm
Height - top of cab 146.14 in / 3712 mm
Front of Tractor to Front Axle 148.42 in / 3770 mm
Height - scraper blade max. 26.77 in / 680 mm
Wheelbase 391.97 in / 9956 mm
Length - overall machine 636.38 in / 16164 mm
Rear Axle to Rear of Machine 95.98 in / 2438 mm
Bail Length - max. (push-pull) 72.28 in / 1836 mm
Width - tractor 141.77 in / 3601 mm
Ground Clearance, Tractor 25.39 in / 645 mm
Axle to Vertical Hitch Pin 23.94 in / 608 mm
Width - outside bowl (shipping width) 154 in / 3914 mm

Transmission
1 Forward 3.4 mph / 5.5 km/h
2 Forward 6.2 mph / 10 km/h
4 Forward 9.2 mph / 14.8 km/h
4 Forward 9.2 mph / 14.8 km/h
4 Forward 9.2 mph / 14.8 km/h
3 Forward 6.8 mph / 10.9 km/h
3 Forward 6.8 mph / 10.9 km/h
3 Forward 6.8 mph / 10.9 km/h
5 Forward 12.3 mph / 19.8 km/h
5 Forward 12.3 mph / 19.8 km/h
5 Forward 12.3 mph / 19.8 km/h
6 Forward 16.7 mph / 26.9 km/h
7 Forward 22.4 mph / 36 km/h
8 Forward 36 mph / 55.7 km/h
Reverse 6 mph / 9.7 km/h
Travel Speed Maximum 36 mph / 55.7 km/h

Service Refill Capacities - Tractor
Crankcase 16.9 gal / 64 L
Transmission 36 gal / 136 L
Final Drive (per side) 6 gal / 23 L
Wheel Coolant (each) 34.3 gal / 130 L
Hydraulic Reservoir 80 gal / 303 L
Windshield Washer 1.5 gal / 6 L
Cooling System 33 gal / 125 L
Differential 36.5 gal / 138 L

Hydraulics
Relief Valve - Steering Circuit 1959 psi / 13500 kPa
Compensator Setting - Cushion Hitch Circuit 3000 psi / 20670 kPa
Bowl Cylinder Stoke 37.4 in / 950 mm
Apron Cylinder Bore 9.25 in / 235 mm
Ejector Cylinder Bore 10.24 in / 260 mm
Steering Circuit 115 gal/min / 435 L/min
Scraper Circuit 153 gal/min / 579 L/min
Secondary Steering Circuit 113.6 gal/min / 430 L/min
Bowl Cylinder Bore 9.25 in / 235 mm
Relief Valve - Implement Circuit 2000 psi / 13800 kPa
Ejector Cylinder Stroke 76.61 in / 1946 mm
Cushion Hitch Circuit 15 gal/min / 56 L/min
Apron Cylinder Stroke 29.92 in / 760 mm

Service Refill Capacities - Scraper
Crankcase 10 gal / 38 L
Transmission 32 gal / 121 L
Differential 43 gal / 163 L
Final Drive (per side) 7.8 gal / 29.5 L
Cooling System 23.3 gal / 88 L
Wheel Coolant (each) 34.3 gal / 130 L
Fuel Tank - 657G 421.9 gal / 1597 L

Steering
Width - 180° Turn, right 45.3 ft / 13.82 m
Width - 180° Turn, left 48.3 ft / 14.73 m
Steering Angle - left 85°
Steering Angle - right 90°

Features & Benefits

Power Train – Engine
Power Train – Transmission
Structures
Operator Station
Electronic Controls
Scraper Bowl
Push-Pull Arrangement
Auger Arrangement
Serviceability
Customer Support

For more information, please contact your sales representative.