Engine Model Cat® C6.6 ACERT™
Flywheel Power 150.0 hp
Net Power - ISO 9249 150.0 hp
Net Power - SAE J1349 148.0 hp
Bore 4.13 in
Stroke 4.99 in
Displacement 402.75 in3
Emissions U.S. Tier 4 Interim, EU Stage IIIB, Japan 2011 (Tier 4 Interim)
Engine Power - ISO 14396 173.0 hp
Engine Power - ISO 14396 (DIN) 175.3 hp
Engine Speed 1,850 rpm - Net Power 156.6 hp
Gross Power - SAE J1995 177.0 hp
Net Power - EU 80/1269/EEC 150.0 hp
Net Power - ISO 9249 (DIN) 152.0 hp
Operating Weight 36392.0 lb
LGP VPAT Blade 2720.0 lb
LGP VPAT Foldable 3287.0 lb
LGP VPAT Landfill 3166.0 lb
Multi-shank Ripper (with 3 shanks) 3444.0 lb
Winch PA55 See value and note, next page
XL SU Blade 5732.0 lb
XL VPAT Blade 2341.0 lb
XL VPAT Foldable 2762.0 lb
XL VPAT Landfill 2912.0 lb
Operating Weight - XL 36392.0 lb
Shipping Weight - XL 35602.0 lb
Operating Weight - LGP 39895.0 lb
Shipping Weight - LGP 38788.0 lb
Blade Type VPAT, SU
LGP VPAT Foldable Blade Capacity 5.06 yd3
LGP VPAT Foldable Blade Width 13.39 ft
XL SU - Narrow* Blade width 9.84 ft
XL SU - Blade Capacity 5.6 yd3
XL SU - Blade Width 10.35 ft
XL VPAT - Blade Capacity 4.33 yd3
XL VPAT - Blade Width 10.73 ft
LGP VPAT - Blade Capacity 5.06 yd3
LGP VPAT - Blade Width 13.39 ft
1.5 Forward 1.93 mph
2.0 Forward 2.86 mph
2.5 Forward 3.54 mph
3.0 Forward 4.66 mph
3.5 Forward 6.21 mph
1.5 Reverse 1.93 mph
2.0 Reverse 3.17 mph
1.5 Forward - Drawbar Pull 71939.0 lb
2.5 Forward* - Drawbar Pull 39341.6 lb
2.5 Reverse* 4.0 mph
3.0 Reverse* 5.28 mph
3.5 Forward* - Drawbar Pull 21806.5 lb
3.5 Reverse* 7.21 mph
Width of Shoe - XL 24.01 in
Width of Shoe - LGP 33.07 in
Shoes/Side - XL 40
Shoes/Side - LGP 46
Track Gauge - XL 74.4 in
Track Gauge - LGP 85.03 in
Track on Ground - XL 102.8 in
Track on Ground - LGP 122.56 in
Ground Contact Area - XL 4929.0 in2
Ground Contact Area - LGP 8107.0 in2
Track Rollers/Side - XL 7
Track Rollers/Side - LGP 8
Ground Pressure* - LGP 4.41 psi
Ground Pressure* - XL 6.55 psi
Grouser Height - LGP 2.2 in
Grouser Height - XL 2.6 in
Note *ISO 16754
Service Refill Capacities
Fuel Tank 79.0 gal
Cooling System 10.56 gal
Final Drives (each) 2.25 gal
Hydraulic Tank 7.79 gal
Sustainability - Sound and Vibration Levels
Note *Values are for an experienced operator in a dozing application; consult the Operating and Maintenance Manual for details.
Sound Levels - Average Exterior Sound Pressure Level 83 dB(A) (SAE J88:2006)
Sound Levels - Dynamic Operator Sound Pressure Level (LpA) 78 dB(A) (ISO 6396:2008)
Sound Levels - Maximum Sound Power Level 110 dB(A) (2000/14/EC)
Vibration Levels - Maximum Hand/Arm* 2.5 m/s2 (ISO 5349:2001)
Vibration Levels - Maximum Whole Body* 0.5 m/s2 (ISO/TR25398:2006)
Vibration Levels - Seat Transmissibility Factor <0.7 (ISO 7096:2000 - spectral class EM6)
Each Additional Shank 172.0 lb
Maximum Clearance, Raised (Shank Tip) 24.5 in
Maximum Penetration Force - LGP 9667.0 lb
Maximum Penetration Force - XL 11600.0 lb
Maximum Pry-out Force - LGP 38217.0 lb
Maximum Pry-out Force - XL 47480.0 lb
Number of Pockets in Ripper Beam 3
Pocket Spacing 3.28 ft
Shank Gauge 6.56 ft
Shank Section 73 mm × 176 mm (2.9 in × 6.9 in)
Weight - with Three Shanks 3444.0 lb
Type Fixed Parallelogram
Number of Pockets 3
Overall Beam Width 86.7 in
Beam Cross Section 216 mm × 254 mm (8.5 in × 10.0 in)
Maximum Penetration - XL 20.2 in
Maximum Penetration - LGP 15.6 in
Cable Ferrule Size (O.D. × Length) 54 mm × 67 mm (2.13 in × 2.63 in)
Maximum Bare Drum - Line Pull 69200.0 lb
Maximum Bare Drum - Line Speed 147.0 ft/min
Maximum Full Drum - Line Pull 54100.0 lb
Maximum Full Drum - Line Speed 257.0 ft/min
Overall Width 38.4 in
Rope Diameter (recommended) 0.75 in
Winch Drive Mechanical
Winch Model PA55
Weight* 2814 lb
Note * Weight: Includes pump, operator controls, oil, mounting brackets and spacers.
Oil Capacity 19.55 gal
Winch and Bracket Length 45.1 in
Winch Case - Width 38.4 in
Drum Diameter 10.0 in
Drum Width 12.4 in
Flange Diameter 19.8 in
Drum Capacity - 22 mm (0.88 in) 288.71 ft
FOPS Meets ISO 3449-2005 Level II and DLV criteria SAE J397B-2009, ISO 3164:1995.
ROPS Meets ROPS criteria SAE J1040-1994, ISO 3471:2008 and DLV criteria SAE J397B-2009, ISO 3164:1995.
Brakes Brakes meet the standard ISO 10265:2008
Designed for comfort, safety and high productivity
An isolation-mounted pressurized cab reduces dust, noise and vibration. Large glass panels provide excellent visibility. Intermittent wipers maximize visibility in poor weather conditions. Cab (ROPS) mounted air conditioning gives you more cooling capability, and removes the condenser from under the hood so it is easier to service. Updated dash and instrumentation streamline the display in a format that is more common across the Cat tractor line and keep the operator aware of any important information in his own language. Brightness and contrasts can be adjusted. Fully adjustable, the air suspended seat includes bolsters to restrain side-to-side movement and steep slope footpads ensure a comfortable position when working on slopes. The cab is pre-wired for a radio and includes two speakers, an antenna and a radio mount. A 10-Amp, 12-volt power converter provides supplemental power for cellular phones or two way radios. The cab also features convenient storage compartments, a cup and coat holder.
Power and reliability
The D6N features a Cat C6.6 ACERT engine and a Cat Clean Emission Module to deliver the performance that customers demand. The Cat C6.6 is an in-line configured engine. ACERT Technology is a combination of building blocks that includes electronics, fuel systems, air management systems and aftertreatment components. The system is optimized based on engine size, the type of application and the geographic location in which it will work. The technologies are applied systematically and strategically to meet high customer expectations for productivity, fuel efficiency, reliability and service life.
Reliable and transparent integrated solutions
Cat NOx Reduction System
The Cat NOx Reduction System captures and cools a small quantity of exhaust gas, then routes it into the combustion chamber where it drives down combustion temperatures and reduces NOx emissions.Aftertreatment Technologies
Cat aftertreatment components have been designed to match application needs. System components include a Diesel Oxidation Catalyst (DOC), which uses a chemical process to convert regulated emissions in the exhaust system, and a Diesel Particulate Filter (DPF) that traps and removes soot until burnt off through regeneration. The DOC and DPF are contained in the Clean Emissions Module (CEM) that protects the components and simplifies maintenance. The CEM will control if regeneration needs to occur and soot level is monitored through the display. The aftertreatment is designed to remove particulate matter from the exhaust without the need for operator intervention or work cycle interruption.Cat Low Temperature Regeneration System
The low temperature Passive Regeneration system works transparently, without any interaction needed from the operator. Under most conditions, engine exhaust temperature will oxidize soot through passive regeneration. In certain operating conditions, when exhaust temperatures might not be high enough, a back pressure valve automatically increases engine load, therefore restoring necessary exhaust temperature. This ensures transparent regeneration even at low temperatures or low load factor.Engine Idle Shutdown Timer
This option (when activated by the operator) shuts down the engine after the machine has been idling for a pre-set period of time.Automatic Engine Speed Control (AESC)
It reduces engine speed when the machine is not under load for more than five seconds, which can help reduce fuel consumption significantly depending on the application.
Efficient, smooth and responsive power
The power shift transmission and differential steering work in tandem with the engine to deliver the power, productive performance and reliability expected from Cat track-type tractors.High Efficiency Torque Divider
The torque divider acts as a hydrodynamic component between the engine and transmission to provide high multiplication of torque and attain the best combination of operating efficiency and driveline reliability.Differential Steering System
Differential steering maintains full power to both tracks to provide best-in-class turning with a loaded blade. When one track speeds up, the other slows down an equal amount. Maneuverability is improved, as well as cycle times in some applications.Multi Velocity Program (MVP)
Maximize your production and fuel efficiency with this exclusive feature, which let you choose from different engine speed ranges to best match your applications and ground conditions.ECO Modes
Standard Eco Modes (when activated) automatically reduce engine speed and are suited for light to medium loaded applications. Operators can select either the “reverse only” or the “forward and reverse” mode. Eco Modes can help save up to 25% of fuel depending on the application.
Implement and Steering Controls
Ergonomically designed for ease of operation
All controls are electro-hydraulic, which means precision and maneuverability. They are ergonomically designed for easy intuitive, comfortable and low effort operation. Blade response can be adjusted through the operator profile in the display.Steering and Transmission Controls: All in One Hand
Differential steering controls give the maneuverability and precision needed in close areas or around structures. The single handle controls the direction (FNR switch) and degree of turns, forward-reverse shifting and gear selection. The thumb roller shifts the electronically controlled transmission and its Ground Speed Adjustment function enables precise speed control. The Speed Recall function allows you to easily save and recall the speed (forward) you want to operate with.Dozer and Rear Attachment Control Levers
Throttle Rocker Switch
- Dozer Control Joystick. The lever allows six-way control of the VPAT blade and the thumb rocker adjusts the blade angle. Standard electro-hydraulic control means simplified installation of the AccuGrade system.
- Integrated Ripper/Winch Lever. Rear attachments are controlled by the same lever and controls can be pre-configured for a ripper, a winch or both of them.
Press the Throttle Rocker switch, it will adjust the engine speed to high or low idle. Press and hold until desired engine speed is attained and then release, the machine will maintain this new chosen speed.Implement/Work Tool Lock-Out Switch
Lock-out feature prevents inadvertent operation of hydraulic work tool attachments.Auto-Shift/Auto-Kickdown Switch
The Auto-Shift function allows a pre-selection of four forward and reverse speed settings that will occur automatically for easy, efficient directional changes. Auto-kickdown allows the transmission to automatically downshift when significant load increases are detected, maximizing your productivity.
Monitor, manage, and enhance job site operations
The dealer-installed AccuGrade system automates blade movements and accurately guides the operator to grade, reducing manual operator inputs as much as 80 percent. Experienced operators can maintain peak efficiency levels throughout the work day, and less experienced operators can be more productive faster. AccuGrade reduces grade checking and staking, labor and material costs, and improves job site safety. Caterpillar offers a choice of Laser for 2D flat planes and slopes, Global Navigation Satellite System (GNSS) for complex 3D cuts/contours, and/or Universal Total Station (UTS) for fine and finish grades.AccuGrade Ready Option
The factory AccuGrade Ready Option provides optimal mounting locations, brackets, and hardware to make the AccuGrade installation quick and easy. Deep integration optimizes machine and system performance and productivity.Rough Grade
The D6N with AccuGrade now includes the Rough Grade function; it allows the operator to manually control tilt as long as the center of the blade is above design, while the AccuGrade system controls the blade height. When the blade center reaches the grade, an auto-lift control prevents the blade from going further down. This can increase your performance when operating manually.Product Link/VisionLink
Product Link is deeply integrated into your machine, helping to take the guesswork out of equipment management. Easy access to timely information like machine location, hours, fuel usage, idle time and event codes via the online VisionLink user interface can help you effectively manage your fleet and lower operating costs.
Durable and efficient
The radiator, air-to-air aftercooler and hydraulic oil cooler are packaged in a single plane, making cleanout easier. Durable, aluminum bar plate construction gives you superior heat transfer and corrosion resistance. 8.9 fins per inch (6.5 fpi on Waste Handlers) on the standard core allow debris to pass through and help reduce plugging. In cooler conditions, an engine mounted demand fan reduces speed to conserve power, save fuel and decrease sound levels. An optional manually reversing fan is available for high debris conditions, and an optional sand blast grid can help protect the radiator from abrasive materials and debris.
Thinking generations ahead
The Cat D6N is designed to benefit your business and reduce emissions.
- Fuel efficient engine, and features like Eco Modes, Auto Engine Speed Control and the viscous clutch demand fan, help fuel consumption.
- Technologies like AccuGrade and Product Link help improve overall efficiency, save fuel and fluids, as well as wear and tear on equipment.
- The D6N can be run on Biodiesel (20% maximum, mixed with Ultra Low Sulfur Diesel Fuel) without reducing the life of the system. Biodegradable hydraulic oil is also available.
- Ecology drains help make draining fluids more convenient and help prevent spills.
- Major components are built to be rebuilt, eliminating waste and saving customers money by giving the machine and/or major components a second – and even third – life.
The D6N features the elevated sprocket design that isolates final drives, axles, and steering components from harsh impacts. The modular design aids to reduce maintenance costs. A variety of undercarriage configurations and track shoe designs help optimize performance.SystemOne™ Undercarriage
SystemOne can help reduce owning and operating costs in many applications. Lifetime sealed and lubricated cartridges eliminate bushing turns and sprockets require no replacement during the life of the chain. All SystemOne undercarriage components are designed to work and wear as a system for longer track life.Heavy Duty Undercarriage
Heavy duty undercarriage is well-suited to aggressive applications like land clearing, side-slopes, or working in rocky or uneven terrain. Components are designed for extended wear life in abrasive conditions and high impact applications.XL, LGP and XL Fine Grading Versions
The XL version performs well in applications with firm to soft underfoot conditions. The LGP undercarriage is designed for soft and swampy conditions. The XL Fine Grading version combines the LGP roller frame length with XL shoes for finish grading applications. All machines now have a stiffer equalizer bar, which enhances finish grading capabilities.
Equipped for the job
Load Sensing Hydraulics
Field-proven, load-sensing hydraulics respond to operating requirements by automatically and continually adjusting hydraulic power to maximize work tool efficiency.Bulldozer and Blade Design
The D6N features a new large spherical linkage bearing for an easier blade removal. Linkage bearings are designed for the life of the machine. VPAT blades now come AccuGrade Ready from factory with mounted brackets for AccuGrade receivers. AccuGrade angle sensor are better protected in the new centered position. Strong design allows Cat blades to stand up to the most severe applications.Variable Pitch Angle Tilt (VPAT) Blade
This blade allows the operator to adjust the blade lift, angle and tilt simultaneously, using the same control. The blade pitch can also be adjusted, which can help increase productivity. Changing the blade pitch angle is now easier with the new pitch system. The versatility of the VPAT blade gives the D6N the ability to take on a variety of applications and material conditions, such as finish grading, spreading material or backfilling. Full track coverage can be achieved in one pass.VPAT Foldable Blade
Designed to facilitate transportation without blade removal, foldable blades reduce the overall shipping width. The blade can be easily folded without the need for tools, and its design has been improved to make the folding process easier and quicker, with only one pin left to remove.Semi-Universal (SU) Blades (for XL versions only)
This blade is built for tough applications where penetration and capacity are important. L-shaped push arms bring the blade closer to the machine, providing excellent maneuverability, balance and stability. When end bits are removed, the blade width reduces to 3 m (9.8 ft) to allow easier transportation.
Parallelogram linkage design allows for better penetration and maneuverability in tight working areas.Winch
For improved winch availability and configuration flexibility, dealers may order the D6N with a factory installed winch preparation package to allow the winch to be easily installed in the field. A single lever control actuates both clutch and brake functions to help improve operator efficiency. See your Cat dealer for available winch options. A dual control package is also available for machines that can be fitted either with a ripper or a winch.Drawbar
The D6N can be equipped with a drawbar for retrieving other equipment or pulling work tools such as discs, compactors, or chopper wheels.
Get more for less
Ripper or Winch Ready Packages - Includes hydraulics, wiring and controls that are necessary to install a ripper or a winch to increase flexibility and reduce downtime. Dual Control Ready Package - Offers versatility for customers who want to use a ripper and a winch on the same machine. Includes a common lever for both attachments and the necessary hydraulics to make installation easier. Maintenance Package - Includes fast fuel and high speed oil change capability.Application Packages
Various Heavy Duty Guard Packages - Several guard packages are available. Contact your Cat dealer for more information on these packages. Forestry Package - This package includes several heavy duty guards for land clearing and forestry applications. Extensive Guarding helps protect critical machine components. A debris resistant cooling system helps reduce plugging and extend service life. Waste Handling Package - Recommended for Landfill applications, it includes several Heavy Duty guards, protections and special final drive/idler seal guards. They help keep damaging wires or debris out of the final drive and idler seals. Improved Cold Weather Package - The standard machine includes glow plugs allowing a properly maintained engine to start at -18° C (0° F) with standard oil. The cold weather package includes ether starting aid, heavy duty batteries and 120V/240V jacket water heater that can bear temperatures below 18° C (0° F) with cold fluids at sea level. An optional electrical heated and insulated breather canister with a special coolant can bear -50° C (58° F).
Contact custom products for waste handling, forestry and other specific application requirements.
Serviceability and Customer Support
When uptime counts
Accessible, Quick and Easy Maintenance
Hinged engine doors provide easy access to grouped maintenance points. The engine air filter can be easily removed for inspection. A standard electric priming pump reduces time and effort to prime the system. Service doors on the rear provide easy access to grouped pressure taps for quick testing of the hydraulic system. A grease gun holder is located on the rear compartment. Modular component design allows easy access without removing other components, saving you service time.Secured Maintenance
Steps and handles make climbing on and off the tractor easy and safe. Anti-slip surfaces are located on every needed surface for more safety while moving on the machine. An Operator Presence Detection system allows the machine to idle when the operator is not in the seat. The system locks out the power train so any unintentional movements while climbing in and out will not physically move the machine.Maintenance Monitoring
Diagnostic connectors allow Cat dealers to quickly troubleshoot the machine. The flexible monitoring system offers more diagnostic capabilities like the engine oil low level.Renowned Cat Dealer Support
From helping you choose the right machine to knowledgeable ongoing support, Cat dealers provide the best in sales and service. Manage costs with preventive maintenance programs like Scheduled Oil Sampling (S·O·SSM) analysis, and guaranteed maintenance contracts. Stay productive with best-in-class parts availability. Cat dealers can even help you with operator training to help boost your profits. And when it’s time for component rebuilds, your Cat dealer can help you save even more with Genuine Cat Remanufactured parts. Receive the same warranty and reliability as new products at cost savings of 40 to 70 percent for power train and hydraulic components.