657G Wheel Tractor-Scraper

657G Wheel Tractor-Scraper

360° Exterior View

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. ...
PDF Print SHARE

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

Transmission

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

Engine

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

Dimensions

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

Steering

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)

Hydraulics

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)

MAXIMIZE PERFORMANCE

  • Tandem engine machines improve cycle times on grades and in slippery underfoot conditions. Also improves the machine's loading characteristics in tough materials like clay.
  • Transmission Torque Converter - Increases rim pull and shortens load times, and eliminates engine stall to efficiently deliver power to the ground and move more dirt.
  • An auger mechanism in the bowl improves self-loading capabilities by lifting material off of the cutting edge and carrying it to the top of the load.

BUILT TO PERFORM

  • Proven Cat engines provide the power and torque rise for excellent lugging in tough loading conditions.
  • Variable injection timing and duration improve fuel efficiency and cold starting, decrease smoke and emissions.
  • Throttle back-up provides the operator with a preset engine speed control in the event of a throttle input failure.
  • Throttle lock allows the operator the capability of locking both engines at any operating level.
  • Directional shift management prevents the operator from shifting out of neutral when engine rpm is above a preset level.
  • Controlled throttle shifting increases drive train life by reducing the fuel injection rate just prior to shifting.
  • The aftercooler lowers intake charge air temperature to increase power and reduce thermal stresses that can cause premature wear of pistons, rings, and liners.
  • Engine oil cooler maintains optimum oil temperature for proper cooling and longer lubricant life.
  • Laminated thermal-shield improves tractor protection by reducing the temperature of exposed engine surfaces, cools engine and operating compartments, extends hose and wiring life.
  • Eight-speed power shift transmission provides automatic, on-the-go shifting for simple, reliable operation.
  • Top gear control helps prevent shifting above a programmed gear to better regulate haul road speeds.
  • The hydraulic retarder extends brake life when working on severe, downhill slopes.
  • Scraper driveline guard protects the output case, differential and ejector cylinder to help minimize driveline maintenance costs.

OPERATOR COMFORT AND CONTROL

  • Standard rubber-mounted cab reduces noise and vibration for comfortable, shift-long operation.
  • Hydraulic servo-steering system provides low-effort automotive feel and excellent maneuverability.
  • Tilt steering column adjusts to five different positions for operator comfort and control.
  • A suspension seat delivers a comfortable ride.
  • The Electronic Monitoring System checks important machine systems and provides a three-level warning.
  • Air conditioning to keep the operator comfortable.
  • The electronically controlled cushion hitch design dampens shocks to provide a smoother ride, and locks down for positive control of the cutting edge during loading and dumping.

SAVE ON MAINTENANCE TIME

  • Service points for the engine are grouped on the right side for easy access. Service platforms and numerous handholds improve access and safety. Folded core radiator allows individual cores to be replaced as modules, reducing service time and expense.
  • Diagnostic connector, with the aid of a service tool, allows quick analysis of the starting and charging circuits.
  • Electronic ground level shutoff enables the operator to stop the engine from the ground with the flip of a switch.
  • Centralized lubrication blocks for the hitch and steering reduce lube time.

BUILT-IN SAFETY FEATURES

  • Wide brake shoes and brake drums improve brake performance and reduce brake and drum wear.
  • Separate front and rear circuits. Secondary brakes engage automatically if service pressure drops.
  • Parking Brake features a spring-applied, air-released mechanism that operates the service brakes.
  • Differential Lock improves traction in slippery conditions.

Standard Equipment:

Optional Equipment:

    Steering Arrangements
    • Secondary Steering Arrangement
    Integrated Technologies
    • Product Link
    Other Attachments
    • Steering lock – external
    Ambient Capability Arrangements
    • Extended Life Coolant, -50° C (-58° F)