631K 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.

Tractor Engine
Flywheel Power - Tractor/Scraper
570HP
Scraper Bowl
Scraper Capacity - Heaped
34yd³
Transmission
Top Speed - Loaded
34.7mile/h
Dimensions
Front of Tractor to Front Axle
142.2in
Axle to Vertical Hitch Pin
20in
Wheel Base
346.8ft
Rear Axle - Rear of Machine
108in
Height - Scraper Blade Maximum
20in
Ground Clearance - Tractor
26.1in
Length - Overall Machine - Standard
597in
Length - Maximum (Push-Pull)
655.1in
Width - Tractor
137.8in
Height - Top of Cab
147in
Width - Rear Tire Centers
96.9in
Width - Overall Machine
155in
Width - Outside Rear Tires
143.2in
Width - Inside of Bowl
134in
Height - Overall Shipping
153.2in
General
Tires - Scraper
37.25R35**E3
Rated Load
37 200 kg (82,200 lb); 37.2 tonnes (41.1 tons)
Scraper Capacity - Struck
24yd³
Tires - Tractor
37.25R35**E3
Maximum Depth of Cut
17.7in
Width - Cut
11.5ft
Scraper Capacity - Heaped
34yd³
Overall Width
12.93ft
Top Speed - Loaded
34.7mile/h
Fuel Tank Refill Capacity - Scraper
231gal (US)
Overall Shipping Height
12.75ft
180° Curb-to-Curb Turning Width
40.12ft
Maximum Depth of Spread
21.1in
Engine
Flywheel Power - Tractor
570HP
Rated Engine RPM - Tractor
1900r/min
Engine Model - Tractor
Cat C18
Emissions
Cat C18 engine meets U.S. EPA Tier 4 Final/EU Stage IV emission standards.
Service Refill Capacities
Fuel Tank
231gal (US)
Hydraulic System
37.5gal (US)
Diesel Exhaust Fluid (DEF)
8gal (US)
Cooling System
19.8gal (US)
Crankcase - Tractor
13.7gal (US)
Transmission System
29gal (US)
Non Push-Pull
Overall Length
49.34ft
Operating Weight - Empty
102750lb
Push-Pull
Overall Length - With Bail Down
54.59ft
Operating Weight - Empty
106430lb
Cab
ROPS/FOPS
ROPS/FOPS meet “ISO Standards.”
Exterior Sound Level
The exterior sound power level for the standard machine (ISO 6393) is 111.5 dB(A).
Safety Criteria Compliance Standards
Steering System
ISO 5010:2007
Reverse Alarm
ISO 9533:2010
Seat Belt
SAE J386:FEB2006
Falling Object Protective Structure (FOPS)
ISO 3449:2005 Level II
Brakes
ISO 3450:2011
Rollover Protection Structure (ROPS)
ISO 3471:2008 for up to 21 282 kg (46,919 lb)
Travel Speeds - Runout
Transmission Gear - Sixth
19mile/h
Transmission Gear - Seventh
25.7mile/h
Transmission Gear - Reverse
6.2mile/h
Transmission Gear - Fourth
10.5mile/h
Transmission Gear - Eighth
34.7mile/h
Transmission Gear - First
3.4mile/h
Transmission Gear - Fifth
14.1mile/h
Transmission Gear - Third
7.7mile/h
Transmission Gear - Second
6.2mile/h
Implement Cycle Times
Bowl Lower
3.5s
Bowl Raise
3.5s
Bail Raise
1.5s
Ejector Retract
8.5s
Bail Lower
2.1s
Apron Lower
3.8s
Ejector Extend
8.5s
Apron Raise
4s

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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