657G Wheel Tractor-Scraper

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.

Tractor Engine

Flywheel Power - Tractor/Scraper 447 kW (600 hp) / 337 kW (451 hp)
Net Power 421/447 kW 564/600 hp
Gross Power - Gears 1-2 596HP
Gross Power - Gears 3-8 632HP
Net Power - Gears 1-2 564HP
Net Power - Gears 3-8 600HP
Bore 5.7in
Stroke 7.2in
Displacement 1105in³

Scraper Bowl

Scraper Capacity - Heaped 44yd³
Rated Load 104000lb
Capacity - Struck 32yd³
Depth of Cut - Maximum 17in
Width - Cut - To Router Bits 12.7in
Ground Clearance - Maximum 23in
Cutting Edge Thickness 1.8in
Hyd. Penetration Force - 657G 121000lb
Depth of Spread - Maximum 26in
Apron Opening 92in
Apron Closure Force 39200lb


Top Speed - Loaded 33mile/h
1 Forward 3.5mile/h
2 Forward 6.3mile/h
3 Forward 7.8mile/h
4 Forward 10.6mile/h
5 Forward 14.1mile/h
6 Forward 19mile/h
7 Forward 25.6mile/h
8 Forward 34.6mile/h
Reverse 6.1mile/h


Tractor Engine Cat C18
Scraper Engine Cat C15

Scraper Engine

Net Power 306/337 kW 410/451 hp
Gross Power - Gears 1-2 437HP
Gross Power - Gears 3-8 478HP
Net Power - Gears 1-2 410HP
Net Power - Gears 3-8 451HP
Bore 5.5in
Stroke 6.5in
Displacement 928in³

Weights - Standard, Tandem

Total Shipping 147959lb
Tractor Shipping 87717lb
Scraper Shipping 60242lb
Total Operating - Empty 150761lb
Front Axle 87924lb
Rear Axle 62837lb
Total Operating - Loaded 254761lb
Front Axle Weight - Loaded 128246lb
Rear Axle - Weight - Loaded 126515lb

Weights - Push-Pull

Total Shipping 160505lb
Tractor Shipping 93635lb
Scraper Shipping 64068lb
Total Operating - Empty 160505lb
Front Axle 93842lb
Rear Axle 66663lb
Total Operating - Loaded 264505lb
Front Axle - Loaded 134165lb
Rear Axle - Loaded 130340lb


Width - Overall Machine 171in
Width - Tractor 141.77in
Width - Rear Tire Center Lines 110.75in
Width - Inside of Bowl 145in
Width - Outside Bowl - Shipping Width 154in
Height - Overall Shipping 185.4in
Height - Top of Cab 146.14in
Ground Clearance - Tractor 25.39in
Front of Tractor to Front Axle 148.4in
Axle to Vertical Hitch Pin 23.94in
Height - Scraper Blade Maximum 26.77in
Wheel Base 391.97in
Length - Overall Machine 636.38in
Rear Axle - Rear of Machine 95.98in
Bail Length - Maximum (Push-Pull) 72.28in


Width - 180° Turn - Right 44.62ft
Width - 180° Turn - Left 47.57ft
Steering Angle - Right 90°
Steering Angle - Left 85°

Service Refill Capacities - Tractor

Crankcase 17gal (US)
Transmission 36gal (US)
Differential 36gal (US)
Final Drive - Each 6gal (US)
Cooling System 33gal (US)
Hydraulic Reservoir 80gal (US)
Wheel Coolant - Each 34.3gal (US)
Windshield Washer 0.5gal (US)


Bowl Cylinder Bore 9.25in
Bowl Cylinder Stroke 37.4in
Apron Cylinder Bore 9.25in
Apron Cylinder Stroke 29.92in
Ejector Cylinder Bore 10.24in
Ejector Cylinder Stroke 76.61in
Steering Circuit 99.9gal/min
Scraper Circuit 153gal/min
Cushion Hitch Circuit 12.7gal/min
Secondary Steering Circuit 64.2gal/min
Relief Valve - Steering Circuit 1959psi
Relief Valve - Implement Circuit 1999psi
Compensator Settings - Cushion Hitch Circuit 3002psi

Service Refill Capacities - Scraper

Fuel Tank - 657G 421.9gal (US)
Crankcase 10gal (US)
Transmission 32gal (US)
Differential 44gal (US)
Final Drive - Each 7.9gal (US)
Wheel Coolant - Each 34.3gal (US)
Cooling System 24gal (US)

Standard Equipment

  • Note
    • Standard and optional equipment may vary. Consult your Cat dealer for details.
  • 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

Optional Equipment

  • Note
    • Standard and optional equipment may vary. Consult your Cat dealer for details.
  • Steering Arrangements
    • Secondary Steering Arrangement
  • Integrated Technologies
    • Product Link
  • Other Attachments
    • Steering lock – external
  • Ambient Capability Arrangements
    • Extended Life Coolant, -50° C (-58° F)