D4 Track-Type Tractor



Technical Specifications
Benefits and Features

The D4 dozer (formerly D6K2) is smart and efficient. It comes equipped with GRADE technologies like Slope Assist and GRADE with 3D to make it easier for even less experienced operators to get more quality work done in less time. But intelligence is only part of the package – Eco Modes and a new power train deliver up to 17 percent more fuel efficiency, while providing superior maneuverability, faster steering response and greater capability to utilize full blade loads. This dozer also retains its optimal balance and undercarriage design for outstanding performance in finish grading applications.

Engine Model Cat C4.4
Power - Net 130 HP
Emissions U.S. EPA Tier 4 Final/EU Stage IV/Japan 2014/Korea Tier 4 Final
Net Power (Rated) - ISO 9249 130 HP
Net Power (Rated) - ISO 9249 (DIN) 132 HP
Note (1) Engine ratings at 2,200 rpm
Note (2) Diesel Exhaust Fluid (DEF) used in Cat Selective Catalytic Reduction (SCR) systems must meet the requirements outlined in the International Organization for Standardization (ISO) standard 22241.
Note (3) All non road Tier 4 Interim and Final, Stage IIIB and IV, Japan 2014 (Tier 4 Final) and Korea Tier 4 Final diesel engines are required to use only Ultra Low Sulfur Diesel (ULSD) fuels containing 15 ppm EPA/10 ppm EU (mg/kg) sulfur or less. Biodiesel blend
Operating Weight 29258 lb
Service Refill Capacities
Fuel Tank 69 gal (US)
DEF Tank 5 gal (US)
Blade Type VPAT, VPAT Foldable*
Note *VPAT foldable blades have the same capacity and width as the XL/LGP VPAT blades.
Operating Weight 29258 lb
Ground Pressure 5.9 psi
Operating Weight 30664 lb
Ground Pressure 4.5 psi
Blades - Width
VPAT 10.5 ft
VPAT LGP 12 ft
Blades - Capacity
VPAT 4.26 yd³
VPAT LGP 4.98 yd³
Air Conditioning System
Air Conditioning The air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R134a (Global Warming Potential = 1430). The system contains 1.3 kg of refrigerant which has a CO2 equivalent of 1.859 metric tonnes.


  • The D6K2 is now the D4, with the same weight, horsepower and balanced design that has made this dozer a favorite for top grading performance.
  • The update from D6K2 to D4 is part of an effort to make all Cat dozer model names simpler.
  • Over the next couple of years, the Cat dozer range will be renamed from smallest to largest – D1 to D11 – with one model per size class and no more letter modifiers like “N,” “K,” “T.”
  • While the number may be different, the D4 delivers all the advantages of the D6K2.


  • Cat C4.4 engine with twin turbochargers is combined with a hydrostatic transmission for outstanding fuel efficiency and the most power-dense drive train in its size class.
  • Superior maneuverability, faster steering response, greater capability to utilize full blade loads.
  • Eco Modes optimize engine speed, while maintaining ground speed, saving up to 17 percent fuel compared to the previous model in lighter blade load applications like finish grading.
  • Optimized undercarriage – eight (8) bottom rollers and two (2) carrier rollers for smoother ride and excellent finish grading performance.
  • Wide blade helps get more work done in fewer passes.
  • Variable Pitch Angle Tilt (VPAT) blade for more versatility, simpler adjustment.


  • Hit target grade faster and more accurately with Cat GRADE technologies. Finish jobs in fewer passes, and with less operator effort, saving you time and helping to increase your profit.
  • Cat GRADE with Slope Assist™ automatically maintains pre-established blade position without a GPS signal.
  • Updated Cat GRADE with 3D offers greater speed, accuracy and flexibility. Factory-integrated system eliminates position sensing cylinders. Antennas integrated into the cab roof for better protection.
  • More intuitive 10-inch (254 mm) touchscreen grade control display is easier to use.
  • AutoCarry™ automates blade lift to maximize blade load, improve load consistency, reduce track slip.
  • Cat Stable Blade works with electro-hydraulic controls to complement the operator’s blade-control input to get better finish grades faster and with less effort.
  • Standard Slope Indicate displays machine cross-slope and fore/aft orientation right on the main display.
  • Factory Attachment Ready Option (ARO) simplifies installation of all brands of grade control system.
  • Product Link™ collects machine data that can be viewed online through web and mobile applications.
  • Access information anytime, anywhere with VisionLink® – and use it to make informed decisions that boost productivity, lower costs, simplify maintenance, and improve security on your job site.


  • Designed from the ground up to give you a smooth ride so you can make the most of top grading speeds.
  • Eight bottom rollers and two carrier rollers optimize the undercarriage to give you smoother finish grades.
  • Rugged Variable Pitch Angle Tilt (VPAT) blade allows you to hydraulically adjust lift, angle and tilt for precise results.
  • Technologies like Slope Assist and Stable Blade are integrated right into the dozer to help even less experienced operators achieve a quality grade more quickly, and with fewer inputs.


  • Fast response with intuitive, precise electro-hydraulic controls. Adjust sensitivity to fine, medium or coarse.
  • Liquid Crystal Display (LCD) is easy to read – includes your Slope Assist and rear camera displays (if equipped).
  • Power Pitch option lets you easily adjust blade to optimum pitch for your application using buttons on the right hand control.
  • Automatic Traction Control reduces track slip in poor underfoot conditions.
  • Standard rear vision camera provides enhanced visibility.
  • Easy to transport without blade removal when equipped with the folding blade option.


  • Grouped maintenance and diagnostic points, as well as ground level service and Diesel Exhaust Fluid fill access.
  • Track roller frame designed for easy cleanout.
  • Optional bracket mounts to rear of machine to keep a shovel handy.
  • Diesel Particulate Filter designed for the life of the engine – no need to clean out.

Standard Equipment:

  • Note
    • Standard and optional equipment may vary. Consult your Cat dealer for details.
  • Power Train
    • Cat C4.4 diesel engine turbocharged
    • Tier 4 Final/Stage IV/Japan 2014/Korea Tier 4 Final Certified Engine with Aftertreatment
    • Aftercooler, Air to Air (ATAAC)
    • Glowplug starting aid
    • 3000 meter altitude operation capability without derating
    • Hydraulically driven, variable speed fan
    • Aluminum bar plate cooling system (radiator, power train, aftercooler)
    • Air cleaner with integrated precleaner, dust ejector and under hood air intake
    • Dual path, electronic control, closed-loop hydrostatic transmission
    • Electric fuel priming pump
    • Fuel/water separator
    • Automatic Traction Control
    • Programmable/selectable bi-directional speed control
    • Engine Idle Shutdown
    • Auto Engine Speed Control
  • Technology Products
    • Cat GRADE with Slope Assist
    • Cat Stable Blade
    • Cat Slope Indicate
    • Product Link ready cellular or satellite (Product Link licensing not available in all areas. Please consult your Cat dealer for details.)
  • Undercarriage
    • Cat Abrasion or Heavy Duty undercarriage
    • Center tread, sprocketed idler with Cat Abrasion, standard idler with HD
    • Lifetime lubricated track rollers (8) and idlers
    • Carrier rollers (2)
    • Hydraulic track adjusters
    • Guards, front/rear guiding
    • Replaceable sprocket rim segments
  • Hydraulics
    • Three valve hydraulics
    • Load sensing hydraulics
  • Electrical
    • Horn
    • Back-up alarm
    • 12V converter, 10A
    • Diagnostic connector
    • Batteries, heavy duty, maintenance free, 900 CCA
    • Integrated lights (4 front, 2 rear)
    • 100 Amp alternator (24 volt)
    • 24V electric starter
  • Operator Environment
    • ROPS/FOPS Cab
    • Integrated A/C with automatic temperature control
    • Rear vision camera
    • Seat, air suspended, cloth for cab
    • Seat belt, retractable 76 mm (3 in)
    • Foot pads, dash
    • Color graphic 178 mm (7 in)
    • Travel speed limiter, electronic
    • Engine RPM and gear display
    • Hour meter, electronic
    • Engine air cleaner service indicator, electronic
    • Water-in-fuel indicator, electronic
    • Throttle switch, rotary
    • Eco mode
    • Controls, seat mounted, fore/aft adjustment
    • Armrests, adjustable
    • Mirror, rearview, inside
    • Single pedal combining deceleration and braking functions
    • Independent forward/reverse speed settings
    • Power port, 12 volt
    • Coat hook
    • Storage compartment
    • Cup holder
    • Floor mat, rubber, heavy duty
    • Intermittent wiper
    • 12V radio ready (plug and play)
  • Fluids
    • Antifreeze coolant (-37 C/-34.6 F)
    • Extended life coolant
  • Other Standard Equipment
    • C-frame, variable pitch link, hydraulic cylinders and lines
    • Engine enclosures
    • Hinged radiator louvered grill
    • Swing-out radiator fan
    • Front pull device
    • Rigid drawbar
    • Vandalism protection
    • Ecology drains (engine, power train and implement oil, engine coolant)
    • Scheduled Oil Sampling (SOS) ports (engine, power train and implement oil)
    • Heavy duty crankcase guard
  • Instructions
    • Warning decals, ANSI, are included for machines in the U.S.A. only.

Optional Equipment:

  • Note
    • Standard and optional equipment may vary. Consult your Cat dealer for details.
  • Power Train
    • Fan, demand, reversing
  • Undercarriage
    • Cat Abrasion
    • Heavy Duty
    • LGP, Cat Abrasion
    • LGP, Heavy Duty
  • Tracks (40 Sections)
    • Track Pairs, Cat Abrasion: 510 mm (20 in) Moderate Service, 510 mm (20 in) Extreme Service, 560 mm (22 in) Moderate Service, 560 mm (22 in) Extreme Service
    • Track Pairs, Heavy Duty: 510 mm (20 in) Extreme Service, 560 mm (22 in) Extreme Service
    • Track Pairs, LGP, Cat Abrasion: 760 mm (30 in) Moderate Service, 760 mm (30 in) Extreme Service
    • Track Pairs, LGP, Heavy Duty: 760 mm (30 in) Extreme Service, 760 mm (30 in) Self-Cleaning
  • Track Guiding Guards
    • Guard, track guiding, center
    • Guard, track guiding, front/rear
    • Guard, track guiding, full length
  • Operator Environment
    • Cab, Comfort Package
    • Cab, Comfort Package, Heavy Duty
    • Suspension seat, heated and ventilated with heated joystick handles
    • Radio, AM/FM/AUX/USB/Bluetooth
  • Hydraulics
    • Hydraulic oil, bio
  • Guards And Protection
    • Cab, protection package
    • Screen, rear
    • Protection package, standard
    • Protection package, front
    • Protection package, heavy duty
  • Blades
    • Blade, 3196 mm (126 in) ARO
    • Blade, 3196 mm (126 in) Foldable ARO
    • Blade, 3684 mm (145 in) ARO LGP
    • Blade, 3684 mm (145 in) Foldable ARO LGP
    • Mechanical blade pitch
    • Blade power pitch
  • Rear Attachments
    • Drawbar
    • Ripper, straight teeth
    • Ripper, curved teeth
    • Counterweight, rear
    • Counterweight, additional slabs
  • Rear Attachment Control
    • Ripper control
    • Winch control
    • Ripper and winch control
    • Ripper and Power Pitch control
    • Ripper, Winch and Power Pitch control
  • Technology Products
    • Attachment Ready Option
    • Cat GRADE with 3D
    • Product Link Cellular
    • Product Link Satellite
    • Product Link Cellular and Satellite
  • Fuel Systems
    • Fuel tank, fast fuel and refill ready
  • Weather Packages And Starters
    • Cold Weather Package, 120V
    • Cold Weather Package, 240V
    • Electrical insulated breather
    • Starter standard
    • Starter high speed, low temperature
  • Fluids
    • Antifreeze, -50 C (-58 F)
  • Electrical
    • Beacon, rotating
  • Field Installed Attachments
    • Winch and fairleads: variable speed PA50 winch, 3-roller fairlead, conversion kit for fourth roller, which step
  • Maintenance And Related Attachments
    • Shovel holder
    • Fuel pump, refilling
    • Oil change system, high speed