657 Wheel Tractor-Scraper



Technical Specifications
Benefits and Features
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Cat® Wheel Tractor-Scraper 657 twin engine has the power to boost productivity by utilize push-pull loading. Combine this ability with improvements in productivity, enhancements in operator comfort, and new safety features – Powered Access System and effective wet disc brakes – and you have a machine offering high returns on profit and time.

Tractor Engine Cat C18
Scraper Engine Cat C15
Tractor Engine
Flywheel Power - Tractor/Scraper 469kW (629 hp) / 353 kW (473 hp)
Net Power 469 kW/637 hp
Gross Power (SAE J1995) 637 HP
Net Power (ISO 14396) 637 HP
Net Power (SAE J1349/ISO 9249) 584 HP
Net Power (SAE J1349/ISO 9249) 592 HP
Bore 5.7 in
Stroke 7.2 in
Displacement 1105 in³
Scraper Bowl
Scraper Capacity - Heaped 44 yd³
Rated Load 104058 lb
Capacity - Struck 32 yd³
Depth of Cut - Maximum 16.4 in
Width - Cut - To Router Bits 12.5 ft
Ground Clearance - Maximum 2.3 ft
Hyd. Penetration Force - 657G 121000 lb
Depth of Spread - Maximum 26 in
Apron Opening 92 in
Apron Closure Force 39200 lb
Top Speed - Loaded 33 mile/h
1 Forward 3.5 mile/h
2 Forward 6.5 mile/h
3 Forward 7.8 mile/h
4 Forward 10.6 mile/h
5 Forward 14.2 mile/h
6 Forward 19.2 mile/h
7 Forward 25.7 mile/h
8 Forward 34.9 mile/h
Reverse 6.7 mile/h
Scraper Engine
Net Power 353 kW/447 hp
Gross Power (SAE J1995) 481 HP
Net Power (ISO 14396) 480 HP
Net Power (SAE J1349/ISO 9249) 415 HP
Bore 5.4 in
Stroke 6.75 in
Displacement 928 in³
Weights - Push-Pull
Total Shipping 160505 lb
Tractor Shipping 93635 lb
Scraper Shipping 64068 lb
Total Operating - Empty 164244 lb
Front Axle 93842 lb
Rear Axle 66663 lb
Total Operating - Loaded 268302 lb
Front Axle - Loaded 134165 lb
Rear Axle - Loaded 130340 lb
Width - Overall Machine 14.3 ft
Width - Tractor 12.3 ft
Width - Rear Tire Center Lines 9.21 ft
Width - Inside of Bowl 12.07 ft
Width - Outside Bowl - Shipping Width 12.98 ft
Height - Overall Shipping 15.29 ft
Height - Top of Cab 12.86 ft
Ground Clearance - Tractor 2.3 ft
Front of Tractor to Front Axle 14.93 ft
Axle to Vertical Hitch Pin 1.8 ft
Height - Scraper Blade Maximum 2.17 ft
Wheel Base 32.68 ft
Length - Overall Machine 58.96 ft
Rear Axle - Rear of Machine 8.07 ft
Width - 180° Turn - Right 45.4 ft
Width - 180° Turn - Left 47.57 ft
Steering Angle - Right 90
Steering Angle - Left 85
Service Refill Capacities - Tractor
Crankcase 13.7 gal (US)
Transmission 35.9 gal (US)
Differential 36 gal (US)
Final Drive - Each 6 gal (US)
Cooling System 23.4 gal (US)
Hydraulic Reservoir 39.6 gal (US)
Windshield Washer 0.5 gal (US)
Bowl Cylinder Bore 7.08 in
Bowl Cylinder Stroke 37.4 in
Apron Cylinder Bore 7.08 in
Apron Cylinder Stroke 29.92 in
Ejector Cylinder Stroke (Stage 1/ Stage 2) 38.32 in
Steering Circuit (@ High Idle) 76.08 gal/min
Implement Circuit (@ High Idle) 517 l/min
Cushion Hitch Circuit 19.54 gal/min
Secondary Steering Circuit 14.52 gal/hr
Relief Valve - Steering Circuit 1959 psi
Relief Valve - Implement Circuit 1999 psi
Compensator Settings - Cushion Hitch Circuit 3002 psi
Service Refill Capacities - Scraper
Fuel Tank 430 gal (US)
Crankcase 8.9 gal (US)
Transmission 31.9 gal (US)
Differential 44 gal (US)
Final Drive - Each 7.8 gal (US)
Cooling System 16.6 gal (US)


  • Up to 6% of improvements in productivity.
  • Advanced Productivity Electronic Control System (APECS) allow the engine and transmission to communicate on a high level.
    This communication allows the machine to better utilize the power and torque the engine is producing. The net result is moving
    more material.
  • Use Ground Speed Control to set the desired top speed and the machine will find the gear that works best for the engine and the transmission, providing a lower fuel burn.
  • The Machine Speed Limit feature replaces Top Gear Selection.
  • Auto-Stall assists in quickly bringing the transmission to an operating temperature at start-up when the machine is working in a cold climate region.
  • Cat® Payload Estimator for scrapers is an earthmoving solution for optimal payload and jobsite efficiency. Payload Estimator achieves on-the-go weighing by using bowl lift cylinder pressure during the loaded haul segment. Payload Estimator is optimized to be used with Sequence Assist, which provides increased productivity with less operator effort.


  • Steer with less effort with the newly designed High-Pressure Steering system.
  • Reduce up to 14 individual operator commands per cycle with
    Sequence Assist (optional attachment).
  • Enjoy interior improvements and a more ergonomic work
    environment with a 21% larger cab than the 657 G-Series cabs.
  • Intuitive, ergonomic controls with multifunction display keep operators focused on their work.
  • Maintain desired cab temperature with Automatic
    Temperature Control.


  • Get in and out of the cab easier with the new powered access
    ladder system (optional attachment).
  • Enhance an operator’s awareness of site surroundings with the
    optional Work Area Vision System (WAVS).
  • Ground level access to fuel fill and daily maintenance points.
  • Seat belt indicator provides visual and audible alerts when the
    seatbelt is not in use.
  • Advanced Cushion Hitch allows the cushion hitch to prevent
    end stroke by having the ability to predict end stroke events
    and manage the rate of dampening, resulting in reduced hitch
    maintenance and improved operator ride in rough conditions.


  • Cat Advance Ride Management (ARM) seat suspension reduces end stroke movement of the load cylinder for a smoother ride.
  • Engine overspeed protection will automatically engage with no operator input when the machine is in eighth gear. The machine will assist in slowing the machine speed by canceling the throttle command and engaging the engine compression brake.


  • Access information anytime, anywhere with Vision Link® –use it to make informed decisions that boost productivity, lower costs, simplify maintenance, and improve safety and security onyour jobsite.
  • Product Link™ collects machine data that can be viewed online through web and mobile applications (optional attachment).


  • The Cat C18 tractor and C15 scraper engines meets U.S. EPA Tier 4 Final or EU Stage V emission standards, contributing to lowerfuel consumption.
  • Using draft-arm overflow guards diverts material away from the bowl, preventing material from getting caught between the draft arms and the bowl sides.
  • The new tractor hydraulic on-demand fan helps assist in lower fuel consumption.

Standard Equipment:

  • Note
    • Standard and optional equipment may vary. Consult your Cat dealer for details.
  • Electrical
    • Alarm, backup
    • Alternator, 115 amp - tractor engine
    • Alternator, 65 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
    • Lunch box platform with holding strap
    • 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, 2 piece
    • Scraper Engine Controls
    • Seat, Air Suspension, Cat Advanced Ride Management
    • Steering Wheel - tilt and telescoping
    • Storage Compartment
    • Transmission Hold
    • Windows - sliding side
    • Windshield - laminated glass
    • Windshield Wiper/Washer - front and rear
    • Wrist Rest/Grab Handle
  • Power Train
    • Tractor
    • Scraper
  • Other Standard Equipment
    • Tractor
    • Scraper

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