631 Partial Scraper

631 Partial Wheel Tractor-Scraper

These tractor-only configurations are available for a variety of final machines, including water pulls, elevating scrapers, lowboy trailer power units, and more

631 Partial Scraper

631 Partial Scraper

Caterpillar offers partial wheel tractor-scraper power units designed for specialty machines that complement the traditional Cat® product line. These tractor-only configurations are available for purchase directly from Caterpillar OEM Solutions. They can be leveraged for a variety of final machines, including water pulls, elevating scrapers, lowboy trailer power units, and more. With improvements in productivity combined with enhancements in operator comfort and new safety features – Powered Access System and effective wet disc brakes – this machine offers high returns on time and investment.
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  • Specifications
  • Standard / Optional Features
  • Overview
    • Long Name -631 Partial Wheel Tractor-Scraper
    • Name -631 Partial Scraper
    • Brand -Cat
    • Status -Current
  • Engine
    • Tractor Engine - Cat® C18
    • Flywheel Power - Tractor - 570 hp / 425 kW
    • Note - Meets U.S. EPA Tier 4 Final or EU Stage V emission standards, or equivalent to U.S. EPA Tier 2, or equivalent to U.S. EPA Tier 3 and EU Stage IIIA.
  • Transmission
    • Top Speed - Loaded - 34.7 mile/h / 55.8 km/h
    • 1 Forward - 3.4 mile/h / 5.5 km/h
    • 2 Forward - 6.2 mile/h / 10 km/h
    • 3 Forward - 7.7 mile/h / 12.4 km/h
    • 4 Forward - 10.5 mile/h / 16.9 km/h
    • 5 Forward - 14.1 mile/h / 22.7 km/h
    • 6 Forward - 19 mile/h / 30.6 km/h
    • 7 Forward - 25.7 mile/h / 41.4 km/h
    • 8 Forward - 34.7 mile/h / 55.8 km/h
    • Reverse - 6.2 mile/h / 9.9 km/h
  • Steering
    • Width - 180° Turn - 40.2 ft / 12.23 m
  • Standards
    • Brakes - ISO 3450:2011
    • ROPS/FOPS - ROPS: ISO 3471:2008. FOPS:ISO 3449:2005 Level II.
    • Cab - Seat Belt: SAE J386:FEB2006
  • Service Refill Capacities - Tractor
    • Fuel Tank - 231 gal (US) / 874 l
    • Crankcase - 13.7 gal (US) / 52 l
    • Transmission - 29 gal (US) / 110 l
    • Differential - 41.7 gal (US) / 158 l
    • Final Drive - Each - 5 gal (US) / 19 l
    • Cooling System - 19.8 gal (US) / 142 l
    • Hydraulic Reservoir - 37.5 gal (US) / 83 l
    • Windshield Washer - 1.3 gal (US) / 5 l

    • Standard Equipment

    • note
      • Standard and optional equipment may vary. Consult your Cat dealer for details.
    • powertrain
      • Cat® C18 engine with Mechanically Actuated Electronic Unit Injection (MEUI™)
      • Transmission: 8-speed planetary power shift, Electronic Clutch Pressure Control (ECPC), Advanced Productivity Electronic Control Strategy (APECS); software, programmable top gear selection, transmission hold, differential lock, transmission guard, ground speed control, machine
      • Cat 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
    • electrical
      • Alternator, 115 ampere
      • Batteries (4), 12V, 1,000 CCA, maintenance free, high output
      • Electrical system, 24V
      • Lighting system: LED
      • Starting/charging receptacle
    • operator environment
      • 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
      • Dome courtesy light
      • Horn, electric
      • T-handle implement control
      • Radio ready
      • ROPS/FOPS cab, pressurized
      • Keypad switches: rear engine start; throttle lock; wipers/washers; hazard lights; work lights on, off; information mode; messenger display; safety tab rocker switches, parking brake
      • Seat belt, static two-piece
      • Windows, sliding
      • Windows, laminated, zipped in
      • Windshield wipers, front and rear windows, includes washers
      • Mirror, rearview
      • Door lock
      • Messenger display
      • Display gauges, warnings include: coolant temp; engine oil temp; hydraulic oil temp; DPF temp; fuel level; park brake; implement lockout; brake system, regeneration required; throttle lock; system voltage; secondary steering; bail down; differential lock; apron float; transmission hold; high beam lights; action lamp; engine speed, rpm; gear selection; DPF fill levels
      • Safety tab rocker switches
      • Seat: Cat Advanced Ride Management (ARM), Cat Comfort Series III, rotates 30 degrees
      • Steering wheel, tilt, telescoping, padded
      • Windows, right side emergency egress
      • Messenger display
    • fluids
      • Extended life coolant to -37° C (-34° F)
    • other equipment
      • Advanced cushion hitch
      • Accumulators (cushion hitch and brake) with Canadian registration number (CRN)
      • Tow pin, front
      • Fenders, non-metallic
      • Heater, engine coolant 120V
    • other attachments
      • Fast-fill fuel tank

    Optional Equipment

    • other attachments
      • Camera arrangement: Work Area Vision System (WAVS)
      • Cab beacon
      • Air horn
      • Air horn and beacon
      • Kingbolt housing
      • Rear wheel arrangement (set of 2)
      • Scraper draft arm package
      • Steering cylinder group (set of 2)