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Caterpillar

631K Wheel Tractor-Scraper

Flywheel Power – Tractor/Scraper

570 HP

425 kW

Scraper Capacity – Heaped

34 yd³

26 m³

Top Speed – Loaded

34.7 mile/h

55.8 km/h

Overview

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.

Media

Photos

Videos

360° View

Exterior

360 Exterior View

Interior

360 Interior View

Features

Details

Specifications

Spec Value
Tires – Scraper 37.25R35**E3 37.25R35**E3
Rated Load 37 200 kg (82,200 lb); 37.2 tonnes (41.1 tons) 37 200 kg (82,200 lb); 37.2 tonnes (41.1 tons)
Scraper Capacity – Struck 24 yd³ 18.3 m³
Tires – Tractor 37.25R35**E3 37.25R35**E3
Maximum Depth of Cut 17.7 in 450 mm
Width – Cut 11.5 ft 3.51 m
Scraper Capacity – Heaped 34 yd³ 26 m³
Overall Width 12.93 ft 3.94 m
Top Speed – Loaded 34.7 mile/h 55.8 km/h
Fuel Tank Refill Capacity – Scraper 231 gal (US) 874 l
Overall Shipping Height 12.75 ft 3.89 m
180° Curb-to-Curb Turning Width 40.12 ft 12.23 m
Maximum Depth of Spread 21.1 in 535 mm
Spec Value
Flywheel Power – Tractor 570 HP 425 kW
Rated Engine RPM – Tractor 1900 r/min 1900 r/min
Engine Model – Tractor Cat C18 Cat C18
Emissions Cat C18 engine meets U.S. EPA Tier 4 Final/EU Stage IV emission standards. Cat C18 engine meets U.S. EPA Tier 4 Final/EU Stage IV emission standards.
Spec Value
Flywheel Power – Tractor/Scraper 570 HP 425 kW
Spec Value
Scraper Capacity – Heaped 34 yd³ 26 m³
Spec Value
Top Speed – Loaded 34.7 mile/h 55.8 km/h
Spec Value
Fuel Tank 231 gal (US) 874 l
Hydraulic System 37.5 gal (US) 142 l
Diesel Exhaust Fluid (DEF) 8 gal (US) 30.5 l
Cooling System 19.8 gal (US) 75 l
Crankcase – Tractor 13.7 gal (US) 52 l
Transmission System 29 gal (US) 110 l
Spec Value
Front of Tractor to Front Axle 142.2 in 3612 mm
Axle to Vertical Hitch Pin 20 in 509 mm
Wheel Base 346.8 in 8808 mm
Rear Axle – Rear of Machine 108 in 2744 mm
Height – Scraper Blade Maximum 20 in 510 mm
Ground Clearance – Tractor 26.1 in 664 mm
Length – Overall Machine – Standard 597 in 15164 mm
Length – Maximum (Push-Pull) 655.1 in 16640 mm
Width – Tractor 137.8 in 3499 mm
Height – Top of Cab 147 in 3733 mm
Width – Rear Tire Centers 96.9 in 2462 mm
Width – Overall Machine 155 in 3937 mm
Width – Outside Rear Tires 143.2 in 3636 mm
Width – Inside of Bowl 134 in 3404 mm
Height – Overall Shipping 153.2 in 3892 mm
Spec Value
Overall Length 49.34 ft 15.04 m
Operating Weight – Empty 102750 lb 46600 kg
Spec Value
Overall Length – With Bail Down 54.59 ft 16.64 m
Operating Weight – Empty 106430 lb 48275 kg
Spec Value
ROPS/FOPS ROPS/FOPS meet “ISO Standards.” ROPS/FOPS meet “ISO Standards.”
Exterior Sound Level The exterior sound power level for the standard machine (ISO 6393) is 111.5 dB(A). The exterior sound power level for the standard machine (ISO 6393) is 111.5 dB(A).
Spec Value
Steering System ISO 5010:2007 ISO 5010:2007
Reverse Alarm ISO 9533:2010 ISO 9533:2010
Seat Belt SAE J386:FEB2006 SAE J386:FEB2006
Falling Object Protective Structure (FOPS) ISO 3449:2005 Level II ISO 3449:2005 Level II
Brakes ISO 3450:2011 ISO 3450:2011
Rollover Protection Structure (ROPS) ISO 3471:2008 for up to 21 282 kg (46,919 lb) ISO 3471:2008 for up to 21 282 kg (46,919 lb)
Spec Value
Transmission Gear – Sixth 19 mile/h 30.6 km/h
Transmission Gear – Seventh 25.7 mile/h 41.4 km/h
Transmission Gear – Reverse 6.2 mile/h 9.9 km/h
Transmission Gear – Fourth 10.5 mile/h 16.9 km/h
Transmission Gear – Eighth 34.7 mile/h 55.8 km/h
Transmission Gear – First 3.4 mile/h 5.5 km/h
Transmission Gear – Fifth 14.1 mile/h 22.7 km/h
Transmission Gear – Third 7.7 mile/h 12.4 km/h
Transmission Gear – Second 6.2 mile/h 10 km/h
Spec Value
Bowl Lower 3.5 s 3.5 s
Bowl Raise 3.5 s 3.5 s
Bail Raise 1.5 s 1.5 s
Ejector Retract 8.5 s 8.5 s
Bail Lower 2.1 s 2.1 s
Apron Lower 3.8 s 3.8 s
Ejector Extend 8.5 s 8.5 s
Apron Raise 4 s 4 s

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)

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