Used CAT D4
Features
BIG PERFORMANCE, BETTER VIEW.
Get a better view of the work at hand with a lower sloping hood line that gives you up to 30 percent better visibility to the area in front of the blade.
Superior maneuverabilty, fast steering response give you the agility to get the job done quickly.
The undercarriage design, with eight bottom rollers and two carrier rollers, is optimized for smooth finish grading and a better ride, even at faster grading speeds.
Cat C4.4 engine with twin turbochargers combined with a hydrostatic transmission to give you excellent fuel efficiency and the most power-dense drive train in its size class.
EASY ON OPERATORS.
Updated cab offers more comfort and convenience for long days in the seat.
Easy-to-use 10 in (254 mm) touchscreen main display is common across the latest models in the Cat dozer lineup.
Standard High Definition rearview camera shows prominently in the main display.
More comfortable seat offers improved suspension and multiple adjustments for personalized comfort.
Bi-directional control lets you preselect forward/reverse gears for reduced effort and to match your application. Save the settings as operator profile for even more convenience.
Additional storage spaces throughout the cab.
USB jack and additional 12V ports for added convenience.
Larger step on the C-frame aids access/egress.
OPERATOR HELPERS
Assist features help make work easier, especially for less experienced operators. Some blade and steering functions are automated so newer operators can work at productivity levels closer to their veteran counterparts. Seasoned operators can enjoy reduced effort and fatigue, along with faster, more accurate results.
The ARO with Assist package is now STANDARD on D4 dozers.
Cat Grade with Slope Assist™ automatically maintains pre-established blade position without a GNSS/GPS signal – no additional hardware or software needed. For machines with 3D, operators can easily switch back and forth from full 3D automatics to Slope Assist.
Steer Assist** automates track and blade tilt steering. Helps reduce operator fatigue by automatically maintaining straight travel with light loads or heavy loads on flat ground and side slopes. Helps reduce steering inputs up to 75%. No GNSS/GPS required.
Stable Blade works seamlessly with operator inputs to help produce a smoother surface when operating manually.
Blade Load Monitor gives you real-time feedback on current load versus the optimal blade load based on your ground conditions. Actively monitors machine load and track slip to help you reach optimal pushing capacity.*
Traction Control automatically reduces track slip to save you time, fuel and track wear.*
AutoCarry automates blade lift to help you maintain consistent blade load and reduce track slip.*
Slope Indicate is included in the main machine display and shows side slope and uphill/downhill grades to help operators with slope work.
Attachment Ready Option (ARO) provides wiring and mounting provisions for dealer installation of Grade with 3D, Accugrade, UTS, or other grade control systems.
TOP GRADES
Factory integrated Cat Grade with 3D uses GNSS/GPS to control the blade so you can get to design plan faster.
Cat Grade with 3D has no masts – low profile antennas are integrated into the cab roof and GNSS/GPS receivers are mounted inside the cab for better protection.
Automatically follow guidance lines from design plans with Steer Assist 3D.* Stay on curb lines, centerlines, bottom of slope, etc., without operator effort. Track steering is used under light loads and blade tilt steering may be added under heavy loads.
Grade operator interface is intuitive and easier to use: 10-inch (254 mm) touchscreen, Android OS platform, operates like a smart phone.
All Cat Grade systems are compatible with radios and base stations from Trimble, Topcon, and Leica.
Already invested in a grade infrastructure? You can install grade systems from Trimble, Topcon, and Leica onto the machine.
The cab is Third Party Grade Control Ready, equipped with CAN interface, harness pass throughs and mounting features to make it easier to install the grade control system of your choice.
PROVEN ADVANTAGE
Cat Assist and Grade technologies work in the background to help dozer operators of varied skill levels and are especially beneficial to less experienced operators. To demonstrate just how much these built-in technology features help, Caterpillar put them to the test. Two novice operators and two expert operators took on slot dozing, truck dump spreading/grading in sand, and side slope work. Each operator completed three runs of each task – one in manual, one using Assist technology features, and one using Assist plus Cat Grade with 3D. The team measured productivity*, efficiency**, completion time, final surface quality, and operator inputs.
Slot Dozing
Productivity and Efficiency – Novice operators went from 9% lower productivity and efficiency than the experts in manual to matching the experts when using Assist.
Truck Dump Spreading/Grading in Sand
Completion Time – Novice operators took 49% more time than the experts in manual and narrowed the gap to 17% using Assist and to 9% by adding Grade.
Blade Inputs – Novice operator blade inputs were reduced 45% with Assist, and 55% with Assist plus Grade. Expert operator blade inputs were reduced 32% with Assist, and 53% with Assist plus Grade.
Surface Quality – Novice operator surface quality improved up to 51% using technology while expert operator surface quality improved up to 27% using technology. Novice operators using technology produced similar surface quality to the expert operators in manual.
Side Slope/Steer Assist
Steering Inputs – Novice and expert operator steering inputs reduced by 75% in forward and by 67% combining forward and reverse.
CONNECT TO GREATER EFFICIENCY
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 safety and security on your job site.
The Cat App helps you manage your assets – at any time – right from your smartphone. See fleet location and hours, get critical required maintenance alerts, and even request service from your local Cat dealer.
Remote Troubleshoot saves time and money by allowing your Cat dealer to perform diagnostic testing remotely.
Remote Flash updates on-board software without a technician being present, at a time that is convenient for you, potentially reducing update time by as much as 50 percent.
OPERATING COST SAVERS
Eco modes optimize engine speed, while maintaining ground speed and power, to save you fuel in lighter blade load applications like finish grading.
Efficiency features reduce engine speed when idling, or shut the machine down after a specified time, to further save fuel and meet idling regulations.
Efficient cooling package has better air flow, helping to reduce fan speed and save even more fuel in cooler conditions/lighter applications.
Cat Abrasion™ undercarriage is your lowest cost-per-hour solution for high abrasion and low impact jobsites. The design offers double the seal life and eliminates bushing turns, reducing your costs up to 50 percent per hour compared to traditional undercarriage.
Cat Precision Cutting Edges protect your blade investment with 20% more wear material and lower cost per hour, plus 40% more wear material on extended wear life edges.* Cat Precision Cutting Edges are the only ones with wear indicators rolled right into the edge material, to ensure you know when to flip your cutting edges to avoid costly blade repairs.
BECAUSE UPTIME COUNTS
Engine oil/engine oil filter service interval has been extended to 1,000 hours*.
Updated fuel system and more than three-times longer DEF filter service interval.
LED lights offer up to six times the life of halogen.
Larger engine compartment door for easier access to service and maintenance points.
Remove lower service panel without tools for quick access to inspect engine compartment and filters.
Ground level access to hydraulic filters and primary fuel filter/water separator.
Optional bracket mounts to rear of machine to keep a shovel handy.
Monitoring system with automatic checks at start up.
Trunnion grease point can now be reached without bending down.
Optional ground level fast fuel fill.
Longer drawbar platform for more convenient fuel fill/rear camera cleaning.
SUSTAINABILITY
The Cat C4.4 engine meets U.S. EPA Tier 4 Final, EU Stage V, Japan 2014, and Korea Stage V emission standards.
The D4 emits up to 5% less CO2 than the previous D6K2*.
Cat diesel engines are required to use ULSD (ultra-low sulfur diesel fuel with 15 ppm of sulfur or less) or ULSD blended with the following lower-carbon intensity fuels up to: 20% biodiesel FAME (fatty acid methyl ester) ** or 100% renewable diesel, HVO (hydrogenated vegetable oil) and GTL (gas-to-liquid) fuels. Refer to guidelines for successful application. Please consult your Cat dealer or “Caterpillar Machine Fluids Recommendations” (SEBU6250) for details.
Auto Engine Speed Control helps reduce unnecessary fuel burn and greenhouse gas emissions by allowing the engine to automatically go into idle mode when the machine is not working.
AutoCarry automates blade lift to reduce track slip for maximum efficiency on each pass to help lower fuel burn and greenhouse gas emissions.
Cat Grade with Slope Assist helps you avoid costly rework and wasteful fuel burn and greenhouse gas emissions by automating your blade position without a GPS signal.
Cat Grade with 3D automates blade movements using a GPS signal helping you follow a grade design, reducing fuel burn and greenhouse gas emissions by improving efficiency and accuracy.
Extended maintenance intervals not only reduce downtime but decrease the amount of fluid and filters that are replaced over the life of the machine.
VisionLink displays the CO2 emissions for monitored assets, calculated by fuel type for the Runtime Fuel Burned each day in a selected date range.
Remote Flash minimizes downtime and maintenance time while keeping your asset running with maximum efficiency. Alerts for machine updates are sent virtually from your Cat dealer and updates can be deployed without a dealer technician needing to be onsite.
Remote Troubleshoot decreases maintenance time and keeps your machine running with maximum efficiency by allowing your Cat dealer to virtually test the machine while working. Once a problem is identified, a technician can fix it the first time, saving time and money.
Dozers
Details
Engine
Engine Model Cat C4.4
Power - Net 130 hp
Net Power - ISO 9249 130 hp
Net Power - ISO 9249 (DIN) 132 mhp
Emissions U.S. EPA Tier 4 Final/EU Stage V/Japan 2014/Korea Stage V
Note (1) Net power available at the flywheel when the engine is equipped with fan, air cleaner, aftertreatment, and alternator with engine speed at 2100 rpm. Advertised power is tested per the specified standard in effect at the time of manufacture.
Note (2) Cat diesel engines are required to use ULSD (ultra-low sulfur diesel fuel with 15 ppm of sulfur or less) or ULSD blended with the following lower-carbon intensity fuels** up to: 20% biodiesel FAME (fatty acid methyl ester) * or 100% renewable diesel, HVO (hydrotreated vegetable oil) and GTL (gas-to-liquid) fuels. Refer to guidelines for successful application. Please consult your Cat dealer or “Caterpillar Machine Fluids Recommendations” (SEBU6250) for details. * Engines with no aftertreatment devices can use higher blends, up to 100% biodiesel (for use of blends higher than 20% biodiesel, consult your Cat dealer). ** Lower-carbon intensity fuels do not significantly reduce GHGs at the tailpipe.
Note (3) Machine Build Number 16B
Weights
Operating Weight 29259 lb
Transmission
Powertrain Hydrostatic Transmission
Service Refill Capacities
Fuel Tank 69 gal (US)
DEF Tank 5 gal (US)
D4
Operating Weight 29259 lb
Ground Pressure 5.9 psi
Width of Standard Shoe 22 in
Blade VPAT or VPAT Foldable*
Blade Capacity 4.26 yd³
D4 LGP
Operating Weight 30882 lb
Ground Pressure 4.5 psi
Width of Standard Shoe 30 in
Blade VPAT or VPAT Foldable*
Blade Capacity 4.98 yd³
Blades
Note *VPAT foldable blades have the same capacity and width as the XL/LGP VPAT blades.
Sustainability
Recyclability 93%
Air Conditioning System
Air Conditioning The air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R134a or R1234yf. See the label or instruction manual for identification of the gas. - If equipped with R134a (Global Warming Potential = 1430), the system contains 1.6 kg (3.5 lb) of refrigerant which has a CO2 equivalent of 2.29 metric tonnes (2.52 tons).
Evaluation
The CAT D4 series bulldozer is a medium-sized tracked bulldozer known for its compact design, high energy efficiency, and operational flexibility, suitable for various work scenarios. The following evaluation is based on its key features and performance.
Product Overview and Positioning
The D4 bulldozer (formerly known as D6K2) belongs to Caterpillar's medium-sized bulldozer product line and is a multi-purpose equipment. Its design combines the power required for medium-sized operations with the mobility brought by compact size, mainly targeting users in the fields of construction, land leveling, forestry, mining, and agriculture.
Core Performance and Advantages
1. Power and energy efficiency
*The D4 is equipped with a Caterpillar C4.4 engine and twin turbochargers, with a net power of 97 kilowatts.
*Combined with the static hydraulic transmission system, its power transmission system has a high power density in the same class and provides excellent fuel efficiency.
*Compared to the previous generation D6K2, D4 has reduced its carbon dioxide emissions by about 5%.
2. Operability and field of view
*The front cover design with a lower inclination angle increases the operator's visibility of the area in front of the shovel by up to 30%, which helps to improve operational accuracy and efficiency.
*Has excellent maneuverability and fast steering response capability.
*The chassis design has been optimized with eight bottom wheels and two support wheels, achieving smooth, fine and even driving experience even at higher operating speeds.
3. Technology and Productivity
*The standard configuration of auxiliary functions and slope technology helps to improve productivity and reduce dependence on operators with different skill levels, achieving up to 50% productivity improvement in some applications.
*The Carter Internet Data and Security Principles can be used to enhance efficiency and profitability.
4. Operating costs and sustainability
*Longer maintenance intervals and lower maintenance costs can help reduce overall operating costs.
*Its design complies with Tier 4/Stage V emission standards, reflecting considerations for sustainability.
Main models and variants
The D4 series includes multiple variant models to meet different professional needs:
*D4 CAT Tracked (C/R): Basic model, suitable for general earthworks, site preparation, and agricultural operations, characterized by heavy-duty tracked systems and high stability.
*D4 CAT King Crawler (K/R): Flagship model, equipped with upgraded high output engine and fully sealed hydraulic system, designed for heavy-duty construction and continuous operations in harsh environments.
*D4 R tracked bulldozer: a modern model that meets Tier 4 Final emission standards, equipped with a fully electronic operating interface and programmable functions, suitable for environmental supervision areas, fine leveling, and multi role operations.
*D4 R/PK (compactor) bulldozer: a professional model equipped with a rear compactor blade, mainly used for projects that require immediate compaction such as road construction and strip mining.
Key specification parameters
*Operating weight: approximately 13272 kilograms (standard D4), the specific weight varies depending on the configuration (such as shovel type, counterweight, soil loosening device, etc.).
*Blade configuration: Multiple blade types are available (such as straight shovel, semi U-shaped shovel, etc.), with a width of about 4.1 meters and a height of about 0.84 meters, to adapt to different operations.
*Transmission system: equipped with a power shift gearbox, usually providing 4 forward gears and 4 reverse gears, achieving smooth shifting and precise control.
*Chassis: The sturdy track system features adjustable tension, sealed rollers, and long-lasting track shoes designed to reduce ground pressure and is suitable for sensitive surfaces.
Applicable scenarios and selection suggestions
The compact size and powerful performance of the D4 bulldozer make it perform well in various scenarios:
*Urban construction: Fine leveling and material handling on construction sites in urban areas with limited space.
*Land clearing and forestry: operating in rugged or densely forested terrain.
*Mining and Agriculture: Performing moderate intensity bulldozing and leveling tasks.
*Road construction and compaction (for D4 R/PK model): Integrated bulldozing and compaction functions.
When selecting, it is necessary to comprehensively consider long-term operating costs, maintenance convenience, and environmental regulations in the operating area. The D4 R and R/PK models are more in line with modern emission standards, while the King of Glory track type excels in durability for continuous heavy-duty use.
summary
The Caterpillar D4 bulldozer series provides users with a reliable and cost-effective medium-sized earthmoving solution by integrating efficient power, advanced operational assistance technology, improved visibility and handling, and reduced operating costs. Its diverse model configuration can accurately match the application needs of different fields from general earthwork operations to professional compaction, making it a modern equipment that balances performance, efficiency, and sustainability.
2026-03-18 23:04:09