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Power Train

3126B HEUI™ meets EPA Tier 2 and EU Stage II emission regulations and offers increased performance levels.

Drive Train

Rugged, durable and reliable components deliver smooth, responsive power and lasting reliability.

Power Turn Differential Steering

A D6N equipped with Differential Steering maintains power to both tracks while turning. Operators have control of machine speed, direction and steering with the tiller bar controller, while maximizing production.

Operator’s Station

State-of-the-art operator’s station has reduced sound levels, lower cab vibrations and excellent visibility. The (optional) Caterpillar comfort series air suspension seat helps reduce operator fatigue. Cab and air conditioning are now offered as standard.


Modern styling with rounded shapes and tapered hood enhances operator visibility. The N-Series combines eye-catching styling with solid, reliable performance.


Engineered and built to give solid support in the most demanding applications. Designed to last throughout the extended service life of the D6N.


The Caterpillar elevated sprocket undercarriage arrangements are designed for optimized balance and best possible performance in fine grading to heavy dozing applications.


Modular design moves Caterpillar a generation ahead in simplifying service and maintenance.

Work Tools

Cat D6N work tools are designed to provide strength and flexibility to match the machine to the job.

Total Customer Support

Your Cat Dealer offers a wide range of services that can be set up with a Customer Support Agreement. The dealer can customize a plan for you, from PM service to total machine maintenance, allowing you to optimize your return on investment.

D6N Standard Equipment

  • 10-amp/12-volt converter
  • 70-amp alternator
  • Back-up alarm
  • Diagnostic connector
  • Horn
  • Hour meter
  • Integrated front lights
  • Odometer

  • Coat hook
  • Cup holder
  • Electronic Monitoring System (EMS III)
  • Electronic travel speed and gear limiter
  • Engine air cleaner service indicator in the cab
  • Engine RPM display/gear display
  • Foot pegs for slope work
  • Four gauge cluster
  • FTC control for Clutch and Brake steering or Cat tiller bar for D/S
  • Mirror, rearview
  • Power points, two 12-volt
  • Pre-start coolant level monitoring system
  • Product Link ready
  • Radio ready, 12-volt
  • ROPS/FOPS cab with integrated A/C
  • Seat belt, retractable 76 mm (3 in)
  • Storage and literature compartments
  • Transmission shift points selection function on dash

  • 3126B HEUI Caterpillar diesel engine with 24-volt starter
  • Air-to-air aftercooler
  • Auto-dust ejector with under hood air filter and pre-screener
  • Automatic down-shift and kickdown transmission control
  • Controlled throttle shifting
  • Coolant, extended life
  • Coolant sampling port
  • Decelerating function
  • Fan, blower
  • Fuel/water separator
  • Load compensated shifting
  • Modular radiator (IMRM)
  • Selectable shift points
  • Single poly-vee belt with automatic belt tensioner
  • Steering system: Clutch and Brake with FTC or optional Differential Steering system
  • Three-speed planetary transmission with torque converter

  • Adjuster, hydraulic track
  • Carrier rollers
  • Guards, end track guiding
  • Heavy-duty sealed and lubricated tracks
  • Idlers, lifetime lubricated
  • Rollers, lifetime lubricated track
  • Wider tread and taller flange idler profile

  • 4600 meter altitude operation capability without derating
  • Centralized remote mounted pressure taps for easy access
  • Crankcase guard
  • Ecology drains
  • Extended service intervals (500 hours)
  • Front pull device
  • Hinged engine doors
  • Hinged radiator grill
  • Implement oil filter
  • Keyed lockable enclosures
  • Load sensing hydraulics
  • Rigid drawbar
  • S•O•SSM taps for engine, transmission and implement fluids
  • Three valve hydraulics for VPAT dozer
  • Transmission remote pressure taps