631 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 consistently deliver high productivity at the lowest cost per ton.

Key Specs

  • Flywheel Power - Tractor/Scraper 570 hp
  • Scraper Capacity - Heaped 34 yd³
  • Top Speed - Loaded 34.7 mile/h

Benefits

Increased Comfort

Ergonomic controls and a newly redesigned cab interior provide a more comfortable and efficient working environment all day long

Improved Productivity

Improvements in fuel efficiency and the new APECS transmission controls deliver more productivity in most applications

Additional Safety

New safety features help operators be more productive and work more efficiently all day long

Tractor Engine

Flywheel Power - Tractor/Scraper 570hp

Scraper Bowl

Scraper Capacity - Heaped 34yd³

Transmission

Top Speed - Loaded 34.7mile/h

Engine

Emissions Cat® C18 engine meets U.S. EPA Tier 4 Final/EU Stage IV emission standards.
Engine Model - Tractor Cat® C18
Rated Engine RPM - Tractor 1900r/min
Flywheel Power - Tractor 570hp

Travel Speeds - Runout

Transmission Gear - First 3.4mile/h
Transmission Gear - Second 6.2mile/h
Transmission Gear - Third 7.7mile/h
Transmission Gear - Fourth 10.5mile/h
Transmission Gear - Fifth 14.1mile/h
Transmission Gear - Sixth 19mile/h
Transmission Gear - Seventh 25.7mile/h
Transmission Gear - Eighth 34.7mile/h
Transmission Gear - Reverse 6.2mile/h

General

Overall Width 12.11ft
Overall Shipping Height 12.9ft
Scraper Capacity - Struck 24yd³
Scraper Capacity - Heaped 34yd³
Rated Load 37 200 kg (82,200 lb); 37.2 tonnes (41.1 tons)
Width - Cut 17.7ft
Maximum Depth of Cut 12.4in
Maximum Depth of Spread 21.1in
Top Speed - Loaded 34.7mile/h
180° Curb-to-Curb Turning Width 40.12ft
Tires - Scraper 37.25R35**E3
Tires - Tractor 37.25R35**E3
Fuel Tank Refill Capacity - Scraper 231gal (US)

Service Refill Capacities

Real Wheels (Each) 2.37gal (US)
Crankcase - Tractor 13.7gal (US)
Transmission System 29gal (US)
Cooling System 18.75gal (US)
Fuel Tank 231gal (US)
Hydraulic System 37.5gal (US)
Diesel Exhaust Fluid (DEF) 8gal (US)

Service Refill Capacities - Tractor

Windshield Washer Reservoir 1.3gal (US)
Differential 40.41gal (US)

Service Refill Capacities - Scraper

Final Drive - Each 8.71gal (US)

Dimensions

Width - Overall Machine 155in
Width - Overall Machine - Ladder Down 159.3in
Width - Tractor 144.2in
Width - Rear Tire Centers 96.9in
Width - Inside of Bowl 134in
Width - Outside Bowl - Shipping Width 143.1in
Height - Overall Shipping 153.2in
Height - Top of Cab 149.8in
Front of Tractor to Front Axle 142in
Ground Clearance - Tractor 26.1in
Axle to Vertical Hitch Pin 20in
Height - Scraper Blade Maximum 20in
Wheel Base 346.8in
Length - Overall Machine - Standard 596.8in
Length - Maximum (Push-Pull) 655.2in
Rear Axle - Rear of Machine 108in
Width - Outside Rear Tires 143.2in

Non Push-Pull

Overall Length 49.34ft
Operating Weight - Empty 102750lb

Push-Pull

Operating Weight - Empty 106430lb
Overall Length - With Bail Down 54.59ft

Cab

Exterior Sound Level The exterior sound power level for the standard machine (ISO 6393) is 116 dB(A).
ROPS/FOPS ROPS/FOPS meet “ISO Standards.”

Safety Criteria Compliance Standards

Steering System ISO 5010:2007
Falling Object Protective Structure (FOPS) ISO 3449:2005 Level II
Rollover Protection Structure (ROPS) ISO 3471:2008 for up to 21 282 kg (46,919 lb)
Seat Belt SAE J386:FEB2006
Reverse Alarm ISO 9533:2010
Brakes ISO 3450:2011

Implement Cycle Times

Bowl Raise 3.5s
Bowl Lower 3.5s
Apron Raise 4s
Apron Lower 3.8s
Ejector Extend 8.5s
Ejector Retract 8.5s
Bail Raise 1.5s
Bail Lower 2.1s

Be More Productive

  • The Advanced Productivity Electronic Control System (APECS) allows
        the engine and transmission to communicate on a high level. This
        communication allows the machine to utilize better 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 allows the machine to maintain a
        set top speed instead of relying on top gear selector.
  • 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 for scrapers is an earthmoving solution for optimal payload and jobsite efficiency. Cat Payload achieves on-the-go weighing by using bowl lift cylinder pressure during the loaded haul segment. Cat Payload is optimized to be used with Sequence Assist, which provides increased productivity with less operator
        effort.
  • Enhance productivity through the usage of Cat Payload with
        Sequence Assist.









Work in comfort

  • Reduce up to 14 individual operator commands per cycle with Sequence Assist.
  • Steer with less effort using the newly designed high-pressure steering system.
  • Enjoy interior improvements and a more ergonomic work
        environment with a 21% larger cab than the G Series cab.
  • Intuitive, ergonomic controls keep operators focused on their work.
  • Maintain desired cab temperature with automatic temperature control.





Designed for Safety



  • Enhance an operator’s awareness of site surroundings with the work area vision system (WAVS).
  • Get in and out of the cab easier with the new powered access ladder system (optional attachment).
  • Seat belt indicator provides visual and audible alerts when the seatbelt is not in use.
  • Advanced Cushion Hitch allows the cushion hitch to prevent endstroke by predicting endstroke events and managing the rate of dampening, resulting in reduced hitch maintenance and improved operator ride in rough conditions.
  • The fuel fill, fuel filter, engine oil filter, engine oil change, and water drain are easily accessible at ground level.








Easy to Operate

  • The spacious cab features easy, intuitive controls and excellent visibility
    . The cab provides a comfortable working environment for all-day
     operation.



  • Cat advanced 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.

Integrated Cat Technologies

  • Monitor, manage, and enhance jobsite operations.
  • Hit the target grade faster and more accurately with Cat Grade technologies. Finish jobs in fewer passes and with less operator effort, saving you time and helping to increase profit.
  • Product Link™ collects machine data that can be viewed online through web and mobile applications (optional attachment).
  • Access information anytime, anywhere with VisionLink® – use it to make informed decisions that boost productivity, lower costs, simplify maintenance, and improve safety and security on your
        jobsite.
  • Shorten the learning curve for inexperienced operators with
        Sequence Assist and Load Assist (included with Cat Grade
        attachment).





Execute Efficiency

  • The new tractor hydraulic on -demand fan helps assist in lower fuel 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.
  • Cat Grade (optional attachment) intelligently ensures the machine does not cut below grade in a cut area or overfill in the fill area.


Standard Equipment

  • Note
    • Standard and optional equipment may vary. Consult your Cat dealer for details.
  • Power Train – Tractor
    • Cat® C18
    • Compression engine brake
    • Electric start, 24V
    • Air cleaner, dry type with precleaner
    • Fan, hydraulic
    • Ground level engine shutdown
    • Radiator, aluminum unit core, 9 fins per inch
    • Guard, crankcase
    • Starting aid, ether
    • Braking system:
      • Primary and secondary, wet disc, hydraulic
      • Parking, hydraulic-released, spring-applied
      • Throttle lock
    • Transmission:
      • 8-speed planetary power shift
      • ECPC control
      • APECS software
      • Programmable top gear selection
      • Transmission hold
      • Differential lock
      • Guard, power train
      • Standard tire spin reduction
      • Ground speed control
      • Machine speed limit
      • Differential lock protection
  • Power Train – Scraper
    • Braking system:
      • Primary and secondary, dry caliper, hydraulic actuated
  • Electrical – Tractor
    • Alternator, 150 Amp
    • Batteries (4), 12V, 1,000 CCA, maintenance free, high output
    • Electrical system, 24V
    • Lighting system:
      • Headlights, LED
      • Turn signals with hazard function, LED floodlights, (2) cutting edge (1) bowl, halogen side vision (2)
    • Starting/charging receptacle
  • Electrical – Scraper
    • Alarm, backup
    • Lighting system:
      • Brake lights, LED
      • Turn signals with hazard function, LED
  • Operator Environment – Tractor
    • HVAC system, heat, AC, defrost
    • Thermostat control of HVAC system
    • Coat hook
    • Lunchbox platform with holding strap
    • Diagnostic connection (2)
    • 12V power ports (2)
    • Differential lock (1)
    • Dome courtesy light
    • Horn, electric
    • T-Handle implement control
    • Mirror, rearview
    • Radio ready
    • ROPS/FOPS cab, pressurized
    • Keypad switches:
      • Throttle lock
      • Wipers/washers
      • Hazard lights
      • Retarding level select
      • Work lights on, off
      • Information mode on Messenger Display
    • Safety tab rocker switches
    • Seat belt, static two-piece
    • Seat, Cat Advanced Ride Management (ARM), Cat Comfort Series 3, rotates 30 degrees
    • Steering wheel, tilt, telescoping, padded
    • Windows, right side emergency egress
    • Windows, sliding
    • Windows, laminated, zipped in
    • Windshield wipers, front and rear windows, includes washers
    • Door lock
    • Messenger Display
    • Gauges, warnings include:
      • Coolant temperature
      • Engine oil temperature
      • Hydraulic oil temperature
      • Diesel Particulate Filter (DPF) temperature
      • Fuel level
      • Park brake
      • Implement lockout
      • Brake system
      • Regeneration required
      • Throttle lock
      • System voltage
      • Secondary steering
      • Bail down
      • Ejector auto
      • Differential lock
      • Apron float
      • Transmission hold
      • Cushion hitch
      • High beam lights
      • Action lamp
      • Engine speed, rpm
      • Gear selection
      • DEF fill levels
  • Fluids
    • Extended Life Coolant to –37° C (–34° F)
  • Other Standard Equipment – Tractor
    • Advanced cushion hitch
    • Accumulators (cushion hitch) with Canadian Registration Number (CRN)
    • Fast oil change
    • Fenders, non-metallic
    • Heater, engine coolant 120V
    • Rims (2)
    • Tow hooks, front
    • Vandalism locks
    • Heater, engine coolant 120V
    • Steering locks
  • Other Standard Equipment – Scraper
    • Bowl:
      • 18.3 m3 (24 yd3), struck
      • 26 m3 (34 yd3), heaped
    • Vandalism locks
    • Rims (2)
    • Hydraulic position sensing cylinders (bowl lift and apron)

Optional Equipment

  • Note
    • Standard and optional equipment may vary. Consult your Cat dealer for details.
  • Steering Arrangements
    • Secondary Steering Arrangement
  • Integrated Technologies
    • Sequence Assist Arrangement with Payload Estimator
    • Load Assist
    • Cat Grade Control with Load Assist
    • Advanced Tire Spin Reduction
  • Other Attachments
    • Camera arrangement – Work Area Vision System (WAVS)
    • Cab beacon
    • Air horn
    • Air horn and beacon
    • Fender, scraper
    • Guard, overflow
    • Wiring group
    • Push Pull
  • Service Instructions
    • Film arrangement – U.S. (ANSI)
    • Film arrangement – International (ISO)