Menu

631K (Tier 2/Stage II)

Back


View Product Downloads

Overview

General Data

Units:
180° Curb-to-Curb Turning Width 40.12 ft 12.23 m Less
Fuel Tank Refill Capacity: Scraper 231.0 gal 874.0 L Less
Maximum Depth of Cut 17.7 in 450.0 mm Less
Maximum Depth of Spread 21.1 in 535.0 mm Less
Overall Shipping Height 12.75 ft 3.89 m Less
Overall Width 12.93 ft 3.94 m Less
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) Less
Scraper Capacity: Heaped 34.0 yd3 26.0 m3 Less
Scraper Capacity: Struck 24.0 yd3 18.3 m3 Less
Tires: Scraper 37.25R35**E3 37.25R35**E3 Less
Tires: Tractor 37.25R35**E3 37.25R35**E3 Less
Top Speed (Loaded) 34.7 mph 55.8 km/h Less
Width of Cut 11.5 ft 3.51 m Less

Engine

Engine Model: Tractor Cat C18 ACERT™ Cat C18 ACERT™ Less
Flywheel Power: Tractor 570.0 hp 425.0 kW Less
Emissions Cat C18 ACERT engine meets U.S. EPA Tier 2/EU Stage II Equivalent emission standards. Cat C18 ACERT engine meets U.S. EPA Tier 2/EU Stage II Equivalent emission standards. Less
Rated Engine RPM: Tractor 1900.0 rpm 1900.0 rpm Less

Tractor Engine

Flywheel Power: Tractor/Scraper 570.0 hp 425.0 kW Less

Scraper Bowl

Scraper Capacity: Heaped 34.0 yd3 26.0 m3 Less

Transmission

Top Speed (Loaded) 34.7 mph 55.8 km/h Less

Service Refill Capacities

Cooling System 19.8 gal 75.0 L Less
Crankcase (Tractor) 13.7 gal 52.0 L Less
Fuel Tank 231.0 gal 874.0 L Less
Hydraulic System 37.5 gal 142.0 L Less
Transmission System 29.0 gal 110.0 L Less

Dimensions

Front of Tractor to Front Axle 142.2 in 3612.0 mm Less
Axle to Vertical Hitch Pin 20.0 in 509.0 mm Less
Wheelbase 346.8 in 8808.0 mm Less
Rear Axle to Rear of Machine 108.0 in 2744.0 mm Less
Width – Overall Machine 155.0 in 3937.0 mm Less
Width – Tractor 137.8 in 3499.0 mm Less
Width – Inside of Bowl 134.0 in 3404.0 mm Less
Width – Outside Rear Tires 143.2 in 3636.0 mm Less
Height – Overall Shipping 153.2 in 3892.0 mm Less
Height – Top of Cab 147.0 in 3733.0 mm Less
Ground Clearance – Tractor 26.1 in 664.0 mm Less
Height – Scraper Blade Maximum 20.0 in 510.0 mm Less
Length – Maximum (Push-Pull) 655.1 in 16640.0 mm Less
Length – Overall Machine (Standard) 597.0 in 15164.0 mm Less
Width – Rear Tire Centers 96.9 in 2462.0 mm Less

Non Push-Pull

Operating Weight (Empty) 102750.0 lb 46600.0 kg Less
Overall Length 49.34 ft 15.04 m Less

Push-Pull

Operating Weight (Empty) 106430.0 lb 48275.0 kg Less
Overall Length (With Bail Down) 54.59 ft 16.64 m Less

Cab

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). Less
ROPS/FOPS ROPS/FOPS meet “ISO Standards.” ROPS/FOPS meet “ISO Standards.” Less

Safety Criteria Compliance Standards

Brakes Brakes ISO 3450:2011 Brakes ISO 3450:2011 Less
Falling Object Protective Structure (FOPS) ISO 3449:2005 Level II ISO 3449:2005 Level II Less
Reverse Alarm ISO 9533:2010 ISO 9533:2010 Less
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) Less
Seat Belt SAE J386:FEB2006 SAE J386:FEB2006 Less
Steering System ISO 5010:2007 ISO 5010:2007 Less

Travel Speeds (Runout)

Transmission Gear: Eighth 34.7 mph 55.8 km/h Less
Transmission Gear: Fifth 14.1 mph 22.7 km/h Less
Transmission Gear: First 3.4 mph 5.5 km/h Less
Transmission Gear: Fourth 10.5 mph 16.9 km/h Less
Transmission Gear: Reverse 6.2 mph 9.9 km/h Less
Transmission Gear: Second 6.2 mph 10.0 km/h Less
Transmission Gear: Seventh 25.7 mph 41.4 km/h Less
Transmission Gear: Sixth 19.0 mph 30.6 km/h Less
Transmission Gear: Third 7.7 mph 12.4 km/h Less

Implement Cycle Times

Apron Lower 3.8 seconds 3.8 seconds Less
Apron Raise 4.0 seconds 4.0 seconds Less
Bail Lower 2.1 seconds 2.1 seconds Less
Bail Raise 1.5 seconds 1.5 seconds Less
Bowl Lower 3.5 seconds 3.5 seconds Less
Bowl Raise 3.5 seconds 3.5 seconds Less
Ejector Extend 8.5 seconds 8.5 seconds Less
Ejector Retract 8.5 seconds 8.5 seconds Less

Main Features and Benefits


631K (Tier 2/Stage II) Standard Equipment

POWER TRAIN – TRACTOR
  • Cat C18 ACERT engine with MEUI™
  • 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
  • Muffler
  • 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, wet disc, hydraulic

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
    • Fuel level
    • Park brake
    • Implement lockout
    • Brake system
    • 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

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)

631K (Tier 2/Stage II) Optional Equipment

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
  • Year of manufacture plate

SERVICE INSTRUCTIONS
  • Film arrangement – International (ISO)

News & Events

View the latest company and product news, events and customer stories.

Learn More
Promotions

View the latest offers available on a range of Cat® equipment and genuine parts.

Learn More
Social Media

Connect with us to learn more about our company, products, services and customers.

Learn More
Branch Locations

With branches across the UK & Ireland, you can be sure that we’re never far away.

Learn More
Services

Effectively manage your equipment to reduce operating costs and improve efficiency.

Learn More
Technology

Integrated technology can help you understand your equipment's output and help extend its lifespan.

Learn More
Finance

Quick and easy financing with customised payment plans through Cat Financial.

Learn More