Exterior View

Interior View

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.

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Flywheel Power – Tractor/Scraper

570hp

Scraper Capacity – Heaped

34yd³

Top Speed – Loaded

34.7mile/h

Front of Tractor to Front Axle

142.2in

Axle to Vertical Hitch Pin

20in

Wheel Base

346.8in

Rear Axle – Rear of Machine

108in

Width – Inside of Bowl

134in

Ground Clearance – Tractor

26.1in

Length – Maximum (Push-Pull)

655.1in

Width – Rear Tire Centers

96.9in

Height – Scraper Blade Maximum

20in

Width – Outside Rear Tires

143.2in

Length – Overall Machine – Standard

597in

Width – Overall Machine

155in

Height – Top of Cab

147in

Width – Tractor

137.8in

Height – Overall Shipping

153.2in

Top Speed – Loaded

34.7mile/h

180° Curb-to-Curb Turning Width

40.12ft

Width – Cut

11.5ft

Maximum Depth of Cut

17.7in

Tires – Scraper

37.25R35**E3

Overall Width

12.93ft

Scraper Capacity – Struck

24yd³

Scraper Capacity – Heaped

34yd³

Tires – Tractor

37.25R35**E3

Fuel Tank Refill Capacity – Scraper

231gal (US)

Rated Load

37 200 kg (82,200 lb); 37.2 tonnes (41.1 tons)

Overall Shipping Height

12.75ft

Maximum Depth of Spread

21.1in

Engine Model – Tractor

Cat C18

Rated Engine RPM – Tractor

1900r/min

Flywheel Power – Tractor

570hp

Emissions

Cat C18 engine meets U.S. EPA Tier 4 Final/EU Stage IV emission standards.

Hydraulic System

37.5gal (US)

Transmission System

29gal (US)

Cooling System

19.8gal (US)

Diesel Exhaust Fluid (DEF)

8gal (US)

Fuel Tank

231gal (US)

Crankcase – Tractor

13.7gal (US)

Operating Weight – Empty

102750lb

Overall Length

49.34ft

Overall Length – With Bail Down

54.59ft

Operating Weight – Empty

106430lb

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).

Seat Belt

SAE J386:FEB2006

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)

Brakes

ISO 3450:2011

Steering System

ISO 5010:2007

Reverse Alarm

ISO 9533:2010

Transmission Gear – Reverse

6.2mile/h

Transmission Gear – Sixth

19mile/h

Transmission Gear – First

3.4mile/h

Transmission Gear – Second

6.2mile/h

Transmission Gear – Seventh

25.7mile/h

Transmission Gear – Fifth

14.1mile/h

Transmission Gear – Third

7.7mile/h

Transmission Gear – Eighth

34.7mile/h

Transmission Gear – Fourth

10.5mile/h

Apron Raise

4s

Ejector Extend

8.5s

Bowl Lower

3.5s

Ejector Retract

8.5s

Bail Raise

1.5s

Bowl Raise

3.5s

Apron Lower

3.8s

Bail Lower

2.1s

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)

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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Deliver innovative solutions through our expertise
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631 Wheel Tractor-Scraper

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