651 Wheel Tractor-Scraper

Caterpillar is excited to announce the 651 comeback into our Wheel Tractor-Scraper lineup in 2022. Delivering high levels of productivity, the 651 single engine earthmoving system is a wise choice on numerous large-scale projects by providing fast cycle times when working in lower grades and rolling resistance applications. First introduced into the Cat® Wheel Tractor-Scraper lineup in 1962, the 651 continues to uphold its legacy as one of our signaturemachines. Its single engine power gives the ability to work with a Cat D10 or D11 push dozer delivering ultra-fast load times and the ability to work in abrasive or rocky conditions. Improvements in productivity, combined with enhancements in operator comfort, and new safety features – Powered Access System and effective wet disc brakes – for a machine offering high returns on profit and time

Engine

Tractor Engine Cat® C18

Tractor Engine

Flywheel Power - Tractor/Scraper 469kW (629 hp)
Bore 5.7in
Stroke 7.2in
Displacement 1105in³
Net Power (SAE J1349/ISO 9249) 592hp
Gross Power (SAE J1995) 637hp
Net Power (ISO 14396) 585hp
Net Power 469 kW/629 hp (ISO 14369:2002)

Scraper Bowl

Scraper Capacity - Heaped 44yd³
Rated Load 104000lb
Capacity - Struck 32yd³
Depth of Cut - Maximum 17.3in
Width - Cut - To Router Bits 12.5ft
Ground Clearance - Maximum 2.3ft
Depth of Spread - Maximum 26in
Apron Opening 92in
Apron Closure Force 39200lb
Hyd. Penetration Force - 657G 121000lb

Transmission

Top Speed - Loaded 34.9mile/h
1 Forward 3.5mile/h
2 Forward 6.5mile/h
3 Forward 7.8mile/h
4 Forward 10.6mile/h
5 Forward 14.2mile/h
6 Forward 19.2mile/h
7 Forward 25.7mile/h
8 Forward 34.9mile/h
Reverse 6.7mile/h

Weights - Push-Pull

Total Shipping 160505lb
Tractor Shipping 93635lb
Scraper Shipping 64068lb
Total Operating - Empty 164244lb
Front Axle 93842lb
Rear Axle 66663lb
Total Operating - Loaded 268302lb
Front Axle - Loaded 134165lb
Rear Axle - Loaded 130340lb

Dimensions

Width - Overall Machine 14.3ft
Width - Tractor 11.87ft
Width - Rear Tire Center Lines 9.21ft
Width - Inside of Bowl 12.07ft
Width - Outside Bowl - Shipping Width 12.98ft
Height - Overall Shipping 15.29ft
Height - Top of Cab 12.77ft
Ground Clearance - Tractor 2.3ft
Front of Tractor to Front Axle 14.93ft
Axle to Vertical Hitch Pin 1.8ft
Height - Scraper Blade Maximum 2.17ft
Wheel Base 32.68ft
Length - Overall Machine 58.96ft
Rear Axle - Rear of Machine 8.07ft

Steering

Width - 180° Turn - Right 44.6ft
Width - 180° Turn - Left 47.57ft
Steering Angle - Right 90
Steering Angle - Left 85

Service Refill Capacities - Tractor

Crankcase 13.7gal (US)
Transmission 35.9gal (US)
Differential 36gal (US)
Final Drive - Each 6.3gal (US)
Cooling System 23.4gal (US)
Hydraulic Reservoir 39.6gal (US)
Windshield Washer 0.5gal (US)

Hydraulics

Bowl Cylinder Bore 7.08in
Bowl Cylinder Stroke 37.4in
Apron Cylinder Bore 7.08in
Apron Cylinder Stroke 29.92in
Steering Circuit (@ High Idle) 76.08gpm
Cushion Hitch Circuit 19.54gpm
Secondary Steering Circuit 14.52gal/hr
Relief Valve - Steering Circuit 1959psi
Relief Valve - Implement Circuit 1999psi
Compensator Settings - Cushion Hitch Circuit 3002psi

Service Refill Capacities - Scraper

Crankcase 8.9gal (US)
Transmission 31.9gal (US)
Cooling System 16.6gal (US)
Final Drive - Each 7.8gal (US)
Fuel Tank 430gal (US)
Differential 44gal (US)

Standard Equipment

  • Note
    • Standard and optional equipment may vary. Consult your Cat dealer for details.
  • Electrical
    • Alarm, backup
    • Alternator, 115 amp - tractor engine
    • Alternator, 65 amp - scraper engine
    • Batteries Tractor (4), 12V Maintenance Free, High Output
    • Batteries Scraper (4), 12V Maintenance Free, High Output
    • Electrical System, 24V
    • Lighting System - Tractor
    • Lighting System - Scraper
    • Starting Receptacle - tractor and scraper engines
  • Operator Environment
    • Air Conditioner (includes heater and defroster)
    • Automotive style fuse panel with fuse puller
    • Lunch box platform with holding strap
    • Coat Hook
    • Cup holder
    • Diagnostic Connection Port (12V)
    • Dome Courtesy Light
    • Engine speed lock
    • Fan defroster
    • Gauge Group
    • Horn
    • Implement Control Joystick
    • Rearview Mirrors
    • Radio Ready
    • 2 radio openings, speakers, and 5-amp converter
    • ROPS Cab with Sound Suppression and Pressurization
    • Static Seatbelt, 2 piece
    • Scraper Engine Controls
    • Seat, Air Suspension, Cat Advanced Ride Management
    • Steering Wheel - tilt and telescoping
    • Storage Compartment
    • Transmission Hold
    • Windows - sliding side
    • Windshield - laminated glass
    • Windshield Wiper/Washer - front and rear
    • Wrist Rest/Grab Handle
  • Power Train
    • Tractor
    • Scraper
  • Other Standard Equipment
    • Tractor
    • Scraper

Optional Equipment