New CAT Equipment

651 Partial Wheel Tractor-Scraper

Customization for Your Operation.

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.

Get a Quote


    Enhanced Operator Comfort

    Ergonomic controls and a newly redesigned cab interior provide a more comfortable and efficient working environment all day long

    Unparalleled Safety

    Safety features help increase operator confidence by providing a safer environment for operations - effective wet disc brakes, WAVS camera, and powered access cab entry

    Up To 15% Less CO2 Emissions

    The 651 emits up to 15% less CO2 than the previous 651E.
    • Engine
      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.
      Tractor Engine
      Cat® C18
    • Service Refill Capacities - Tractor
      Cooling System
      23.4 gal (US)
      10 gal (US)
      36 gal (US)
      Final Drive - Each
      6 gal (US)
      Fuel Tank
      430.1 gal (US)
      Hydraulic Reservoir
      39.6 gal (US)
      35.9 gal (US)
      Windshield Washer
      0.5 gal (US)
    • Standards
      ISO 3450:2011
      Seat Belt: SAE J386:AUG2012
      ROPS: ISO 3471:2008 for up to 26 600 kg (58,643 lb). FOPS: ISO 3449:2005 Level II
    • Steering
      Steering Angle - Left
      Steering Angle - Right
      Width - 180° Turn - Left
      47.57 ft
      Width - 180° Turn - Right
      44.6 ft
    • Tractor Engine
      5.7 in
      1105 in³
      Gross Power (SAE J1995)
      637 HP
      Net Power (SAE J1349/ISO 9249)
      592 HP
      7.2 in
    • Transmission
      1 Forward
      3.5 mile/h
      2 Forward
      6.5 mile/h
      3 Forward
      7.8 mile/h
      4 Forward
      10.6 mile/h
      5 Forward
      14.2 mile/h
      6 Forward
      19.2 mile/h
      7 Forward
      25.7 mile/h
      8 Forward
      34.9 mile/h
      6.7 mile/h
      Top Speed - Loaded
      34.9 mile/h
    • Standard and optional equipment may vary. Consult your Cat dealer for details.
    • Transmission: 8-speed planetary powershift, ECPC control, APECS software, programmable top gear selection, transmission hold, differential lock, guard - power train, ground speed control, machine speed limit
    • Cat C18
    • Cat engine brake
    • Electric start, 24V
    • Fan, hydraulic
    • Ground level engine shutdown
    • Radiator
    • Guard, crankcase
    • Starting aid, ether
    • Braking system: primary and secondary, wet disc, hydraulic; parking, hydraulic-released, spring-applied
    • Throttle lock
    • Alarm, backup
    • Alternator, 115 ampere
    • Batteries (4), 12V, 1,000 CCA, maintenance free
    • Electrical system, 24V
    • Lighting system: headlights (halogen), turn signals with hazard functions (LED)
    • Turn signals with hazard function
    • Starting/charging receptacle
    • 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
    • Radio ready
    • ROPS/FOPS cab, pressurized
    • Keypad switches: rear engine start; throttle lock; wipers/washers; hazard lights; worklights on, off; information mode; messenger display; safety tab rocker switches, parking brake
    • Seat belt, static two-piece
    • Windows, sliding
    • Windows, laminated, zipped in
    • Wrist Rest/Grab Handle
    • Windshield wipers, front and rear windows, includes washers
    • Door lock
    • Messenger 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
    • Extended life coolant to -37° C (-34° F)
    • Accumulators (brake and cushion hitch) with Canadian Registration Number (CRN)
    • Fast oil change
    • Vandalism locks
    • Steering locks
    • Heater, engine coolant 120V
    • Air cleaner, powered precleaner
    • Powered access ladder
    • 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)
    • Wiring group