Bulldozer Caterpillar D6N technical characteristics: engine, fuel consumption

Caterpillar D6N is a medium power special equipment. In its segment, the bulldozer is considered one of the leaders in terms of performance and reliability.

The Caterpillar brand is world famous. The brand's line is represented by several dozen series of construction equipment, each of which combines the company's vast experience and modern technologies. Due to this, the output is high-quality products. Cat D6N is one of the brand’s most popular developments. The design of the bulldozer has additional reinforcement, which has a positive effect on the service life even in the presence of constant high loads.

Caterpillar D6N is a multi-purpose machine that is used to perform various excavation work in large-scale construction, quarries and fields. The front blade allows you to develop soil of 1-3 density categories, move heavy objects over short distances or dig. Basic operations performed with the Cat D6N:

• leveling uneven surfaces, moving and laying soil;
• cleaning the area from foreign objects and construction debris;
• development of bulk materials;
• digging and filling wells, canals and trenches;
• loading and unloading operations.

The bulldozer is adapted for use in Russia and operates effectively at temperatures from -40 to +40 degrees.

Technical Data - D6N XL Caterpillar

Note. All listed data is checked by experts from the LECTURA Specs team. However, incomplete data and errors may occur. Contact our team with any change suggestion.

Base model with Rops cab with blade

This is interesting: Bulldozer CAT D6R: technical characteristics and design

Modifications

• Caterpillar D6R – base model;
• Caterpillar D6R (Series II) - mining tracked version weighing 15,000 kg;
• Caterpillar D6R LGP (Series II) – a modification weighing 21,000 kg with enhanced track contact with the surface, allowing passage of swampy and waterlogged areas;
• Caterpillar D6R (Series III) – variation weighing 18,700 kg;
• Caterpillar D6R XL (Series III) – a bulldozer weighing 15,000 kg with a high-power engine that increases the capabilities of the equipment;
• Caterpillar D6R XW (Series III) is a quarry tracked modification weighing 20,000 kg.

Features of the Cat D6R family:

• highest operating comfort. The updated bulldozer cabin with an advanced design and ergonomic controls allows the operator to perform any operation without additional effort;
• powerful unit;
• wide range of additional equipment;
• integrated technologies that improve control and management of equipment;
• ease of maintenance and good customer support from the manufacturer.

Modifications and features

Caterpillar D6N is available in basic and modified versions. The following versions of the model exist:

• Caterpillar D6N – basic version;
• Caterpillar D6N LGP is the heaviest modification with improved track-to-surface contact. Used for wetlands, soils with weak bearing capacity;
• Caterpillar D6N XL - a variation with a power plant with increased power, adding speed and productivity;
• Caterpillar D6N XW.

Features of the Caterpillar D6N bulldozer:

• a differential steering control mechanism that makes it easier to control the machine and increases maneuverability;
• reliability inherent in all brand products;
• convenience and comfort of work. The sealed cabin, air conditioning and heating system provide an optimal microclimate;
• availability of a certificate of compliance with environmental standards of the European Union;
• Powerful home-made unit.

TECHNICAL SPECIFICATIONS Caterpillar D6N LGP

Dimensions:

• length without equipment – ​​4165 mm;
• width with standard shoes without equipment – ​​3000 mm;
• width with standard shoes and VPAT blade (rotation angle 25 degrees) - 3706 mm;
• canopy height with ROPS – 3144 mm;
• cabin height with ROPS – 3200 mm;
• height along the exhaust pipe – 3083 mm;
• ground clearance - 507 mm.

When installing additional equipment, the length of the bulldozer increases by the following values:

• ripper – 1026 mm;
• winch PA55 – 381 mm;
• VPAT blade (25 degree rotation) – 2125 mm;
• VPAT blade (straight) – 1204 mm.

The operating weight of the dozer with a full fuel tank, ROPS and VPAT blade is 17,791 kg. Transport weight is 17486 kg.

The Cat D6N LGP features a VPAT blade with adjustable tilt and swivel angles. The equipment has a width of 4080 mm, capacity - 3.16 cubic meters.

bulldozertop-

A parallelogram ripper can be installed at the rear without adjusting the ripping angle with the following characteristics:

• number of nests – 3;
• beam width – 2202 mm;
• maximum digging depth is 359.5 mm.

Also available as additional equipment is a winch model PA55:

• weight – 1276.5 kg;
• cable (recommended/optional) – 19/22 mm;
• drum capacity (recommended cable/rope upon request) – 122/88 m.

Refill containers:

• fuel tank – 299 l;
• cooling system – 35 l;
• hydraulic system tank – 29.5 l.

Specifications

Dimensions (LGP/XL version):

• length – 5110/4165 mm;
• width – 3428/3000 mm;
• height – 3095/3200 mm;
• ground clearance - 507/394 mm;
• front track – 2160/1890 mm;
• rear track – 2160/1890 mm.

The mass of the Caterpillar D6N LGP modification is 17797 kg, Caterpillar D6N XL - 16668 kg, specific ground pressure - 34.4 kPa/52.3 kPa.

The maximum forward speed is 10 km/h, reverse – 11.6 km/h.

Basic blade characteristics:

• height – 1411 mm;
• width – 3780 mm;
• capacity – 3.18 cubic meters;
• maximum digging depth – 656 mm.

DESCRIPTION AND PURPOSE

Caterpillar D6N is a mid-size bulldozer and is available in several modifications. The heaviest version available is the Cat D6N LGP with a wider track. It is designed for operation in difficult conditions, and one of its main advantages is the differential steering control mechanism. Unsurpassed technical characteristics and high reliability provide the bulldozer with advantages over its “classmate competitors”.

The Caterpillar D6N LGP is a multi-purpose machine designed for use in wetlands and weak soil conditions. The equipment is used to perform excavation work in quarries, deposits and large-scale construction. Powerful blades allow you to move large objects, dig and work with category 1-3 soil. The model is adapted to harsh operating conditions and can operate at temperatures from -40 to +40 degrees. The following operations can be performed using the Caterpillar D6N LGP:

• development of bulk materials;
• surface planning and profiling;
• various loading and unloading operations;
• demolition of small buildings and clearing of debris and trees;
• digging (filling) canals, holes, wells.

Capabilities of Caterpillar D6N bulldozers

Caterpillar D6N bulldozer equipment is used for leveling and cleaning areas, developing and moving bulk materials, and clearing clearings. The front blade of the bulldozer makes it possible to work with light and medium soils, move heavy objects over short distances and dig pits and trenches. The advantage of this bulldozer is its ability to differentially control turns.

Caterpillar D6N in action

Working equipment and dimensions

The basic version of the Caterpillar D6 bulldozer is equipped with a standard dozer blade and ripper. The ripper has the design of a knife-like unit mounted in the rear of the machine on a powerful frame. Single and multi-shank rippers are available. Special plates with replaceable pointed tips made of hard steel alloy create a digging force of up to 8 tons. In this case, the loosening depth from a height of up to half a meter is 500 mm. The reverse excavation thrust reaches 18.5 tons. Powerful working bodies ensure crushing even rocks into small fractions.

Overall dimensions of the Caterpillar D6 bulldozer:

• length - 3860 mm;
• width with blade - 3360 mm;
• width without blade - 2640 mm;
• height - 3195 mm (up to the rollover protection structure);
• track - 2160 mm;
• ground clearance - 507 mm;
• dump capacity - 4.28 m3;
• operating weight - 16,605 kg.

Cat D6R works with the following ripper and dozer equipment:

• rotary blade, supplemented with hydraulic skewing;
• hemispherical rotary blade with hydraulic skew;
• fixed hemispherical blade;
• straight fixed blade;
• single-shank ripper;
• three-shank ripper;
• scoring knives (side and middle).

Advantages of Cat D6R special equipment:

• ability to work on wet and sticky soil;
• wide selection of attachments;
• high control accuracy;
• comfortable working conditions;
• versatility;
• power.

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Chassis

The shoes are reinforced, which ensures long-term trouble-free operation. The differential control system guarantees the distribution of power to the chassis; when turning, the tracks rotate at different speeds. The crawler track is characterized by high precision. The front guide roller has a long service life compared to its predecessors; its service life has doubled. The same applies to guide rollers and sprockets.

The maneuverability of the equipment allows it to overcome any obstacles. A planetary type gearbox with the ability to control under load is installed as standard. It is designed for 3 forward and 3 reverse speeds. The Caterpillar D6R tractor box includes clutches with an oil cooling system. The transfer case ensures maximum work productivity; it is used as a hydrodynamic element that transmits power from the engine to the gearbox. It has a block design, which guarantees high speed of service and its simplicity.

The Caterpillar D6R undercarriage features a wider track that ensures stability on any terrain and allows for easier turning. Shoes with increased width can be installed on it, unless we are talking about a modification of the LGP VPAT.

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DEVICE

The Caterpillar D6N LGP is designed with a durable frame designed to absorb high torsional forces and shock loads. For greater strength, the bulldozer uses cast elements. When assembling the frame and crankcase, robotic welding is used, which increases the reliability of the structure.

The Caterpillar D6N LGP is equipped with the SystemOne undercarriage, which significantly reduces machine maintenance costs. The design of the machine involves the installation of a protective guard for the upper part of the frame of the road wheels, which protects against the negative effects of abrasive materials. Smooth running and high stability of the bulldozer are achieved through the use of a balancing beam mounted under the main frame. The tubular design of the track frame allows it to better withstand deformation.

Chassis characteristics:

• shoe width – 840 mm;
• number of shoes on one side – 46;
• number of road wheels on one side – 8;
• track width – 2160 mm;
• contact length of the caterpillar part with the surface – 3117 mm;
• supporting surface area – 5.24 sq.m;
• ground pressure – 33.2 kPa.

To control the Cat D6N LGP, a modern transmission is used with Auto-Shift and Auto-Kickdown devices, which automatically control the speed of the machine. A single-stage torque converter is used to reduce shock loads. The ECPC system is responsible for regulating the pressure in the couplings. The planetary gearbox has power shift.

Travel speed (forward/backward):

• 1.5 – 0-3.1/0-3.1 km/h;
• 2 – 0-4.6/0-5.1 km/h;
• 2.5 – 0-5.7/0-6.4 km/h;
• 3 – 0-7.5/0-8.6 km/h;
• 3.5 – 0-10/0-11.6 km/h.

Traction force indicators depending on gear:

• 1.5 – 320 kN;
• 2 – 175 kN;
• 3 – 97 kN.

Rotation control is performed in 2 ways:

• differential. Rotation is carried out using the drive of both tracks;
• "fingertips" Rotation is performed using the multifunction lever.

When braking, the bulldozer applies hydraulically adjustable brakes in an oil bath.

The Caterpillar D6N LGP is equipped with a cab with excellent visibility. Foam panels, window seals and sound-absorbing upholstery keep cabin noise levels below 79 dB. The cabin is mounted on soft supports to reduce transmitted vibration. To protect the operator, a ROPS system and reinforced stands are provided. The equipment is controlled through hydraulic controls. The operator receives all information about the condition of the machine through the EMS III system.

Repair and maintainability

During the design process of the main elements of the D6R bulldozer, the likelihood of a major overhaul was taken into account.

This way you can significantly increase the overall service life of the equipment, saving costs and natural raw materials.

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Design indicators of special equipment

The model range of this type of bulldozer includes several modifications that differ in weight and blade capacity. The basic technical characteristics of D6N special equipment are as follows:

The design of Caterpillar bulldozers makes maintenance easy - all important components are accessible for inspection and repair.

Dimensions Caterpillar D6N

Main weaknesses of D17A

The power unit does not have any major problems; serious problems arise either from old age or from high mileage exceeding the warranty.

The most common malfunctions:

• Lack of hydraulic compensators - every 30-40 thousand kilometers it is necessary to adjust the valves as planned (gaps: inlet 0.18-0.22, exhaust 0.23-0.27 mm). Under heavy loads, this procedure may be required earlier, as the characteristic metallic sound from under the hood will tell you when the engine is running.
• Difficulty starting in the cold season - capacitors freeze in severe frosts. It is necessary to warm up the control unit, after which the engine will start. Sometimes the issue is resolved by replacement.
• It is advisable to routinely change the timing belt, the service life of which is 100 thousand km. If this rule is not followed, the valve very often bends when it breaks.
• In order to avoid boiling and leaking of antifreeze, it is necessary to promptly replace the cylinder head gasket. If it is damaged, coolant may enter the combustion chamber and damage the integrity of the cylinder-piston group. You can also replace compression and oil control rings, caps, etc. along the way.
• The speed fluctuates - a classic problem, most likely the reason is a clogged throttle assembly. It needs to be cleaned.

What kind of oil should I use?

Choosing an oil brand is a serious issue on which the longevity of the car’s heart depends. In today's market, a huge selection can confuse a novice car enthusiast. According to the instructions, D17A is “omnivorous” - grades from 0W-30 to 15 W 50 are suitable for it. The manufacturer strongly recommends avoiding counterfeits and purchasing only branded oils from reliable suppliers. Replacement must be done every 10 thousand kilometers, optimally - after 5 thousand. With longer use, the oil loses its properties, settles on the cylinder walls and burns along with the fuel mixture. As a result of its waste, oil starvation occurs, which can lead you to a major engine overhaul.

Tuning options

As with any engine, modifications to achieve higher performance will cost a pretty penny. It is more advisable to replace the unit, but if you want to bleed this particular engine, you can choose from two options:

• Aspirated - it is necessary to bore the stock or replace the throttle with a larger one, install a cold intake and direct exhaust, as well as a camshaft with a split gear. This modification will make the engine 150 horsepower, but the cost of work and spare parts will be a considerable amount.
• Installing a turbine - it is necessary to respect humanity and adjust its operation to 200 hp so that the engine does not fall apart. To increase reliability, it is advisable to replace the crank mechanism parts with forged ones and reduce the compression ratio. An important component is the installation of a cold intake and direct-point exhaust.

It should be noted that any modifications, even those carried out by a professional, reduce the life of the internal combustion engine. Therefore, the most optimal would be to replace the engine class or car brand.

List of Honda cars equipped with D17A:

• Civic,
• Stream
• FR-V,
• Acura EL.

ENGINE

The Caterpillar D6N LGP is equipped with a modern Cat C6.6 ACERT engine with electronic control and direct injection system. The design includes a mechanism for pre-heating air with automatic start. The engine is equipped with intercooling of charge air (ATAAC) and a turbocharger.

The Cat C6.6 ACERT engine is suitable for use in Russia. The efficiency of its operation does not decrease when using low-quality fuel. The air intake system has a 3-stage filtration mechanism with a purification level of 99.8%. The creators abandoned the standard scheme with several fan belts for the cleaning system. Instead, an automatic belt tensioning system and a V-belt made of polymer material were added to the engine design.

Characteristics of the Cat C6.6 ACERT unit:

• working volume – 6.6 l;
• power – 111.8 (152) kW (hp);
• speed – 2000 rpm;
• number of cylinders – 6;
• cylinder diameter – 110 mm.

Engine device

Engine Caterpillar 3126B

The bulldozer is equipped with a Caterpillar 3126B engine with electronically controlled direct fuel injection. The special equipment is equipped with an electronic pre-heating system for forced air with automatic activation. There is also a turbocharger and intercooler of charge air (ATAAC system), perfectly matched to the engine and necessary to increase its power.

A V-belt made of innovative material and automatic belt tension made it possible to abandon the engine cooling scheme with 3–4 fan drive belts. And installing aluminum plates in the radiator increased heat transfer.

Transmission Features

The design features include mechanisms such as Auto-Shift and Auto-Kickdown. The first one switches gears automatically, the second one switches in auto mode to a lower gear when the load increases.

The gearbox has three reverse and three forward gears, and power shift. A single-stage torque converter is responsible for preventing shock loads on the Caterpillar bulldozer transmission under difficult operating conditions.

Caterpillar D6N gearbox

Caterpillar D6N description

The Cat D6N mid-size bulldozer has several modifications. The heaviest of them is DS-LGP, the weight of this version is 17.2 tons. Moreover, one of the main advantages of the model is the differential steering control system

This model is equipped with a Caterpillar 3126B engine, the design of which includes an electronically controlled direct fuel injection system. The Caterpillar D6N bulldozer operator has at his disposal an electrical system for pre-heating of the forced air, which is turned on automatically. There is also a turbocharger and charge air intercooler (ATAAS system), which are well matched to the engine and are designed to increase its power.

The designers abandoned the traditional design with 3-4 fan belts for the engine cooling system. This became possible thanks to the production of a V-belt from a new polymer material and the presence of an automatic belt tensioning system. And higher heat transfer was achieved thanks to the inclusion of aluminum plates in the radiator design.

The design includes devices such as Auto-Shift and Auto-Kickdown. The first performs automatic gear shifting, the second - switches to low gear in case of a significant increase in load (also in auto mode).

There is a single-stage torque converter that prevents shock loads on the Caterpillar D6N bulldozer transmission in severe operating conditions. The gearbox is planetary, power shift, with 3 forward gears and 3 reverse gears.

Two steering control options are available: differential or fingertip. In the first case, during the turning process, the drive of both caterpillar tracks is guaranteed; Operators perform the required operations using the multi-function lever with one hand.

The pressure in the clutches is regulated electronically (ESRS system).

The noise level in the cabin of the Caterpillar D6N bulldozer is 79 dB (A). Sound-absorbing upholstery material, soundproofing foam panels were used, and windows and doors were sealed. In addition, there are bolted-on soft cab supports.

The working equipment is controlled using hydraulic elements characterized by low impact force. And the EMS III system helps to monitor the performance of the bulldozer systems, which informs the operator about the main operating parameters.

AccuGrade laser and satellite leveling systems are available. An air conditioning system is included as standard, and an air-suspended seat is available as an option.

For the production of individual elements, cast steel and thick steel sheets are used. The parts are welded into a single frame and body structure, which provides high resistance to impact loads. And the balancing beam, mounted on hinges, allows the frames of Caterpillar D6N tracked vehicles to change position relative to the vertical plane and thereby repeat the profile of the supporting surface.

Caterpillar's proprietary SystemOneTM design features a high final drive position. This solution helps to isolate the device from contact with the ground and shock loads transmitted from the working body.

The track frames are made of tubular frames, which makes them more resistant to deformation.

There are several modifications of the running gear of the Caterpillar D6N bulldozer: XL - extended; LGP - with low pressure on the supporting surface.

Thanks to the Product Link system, the owner of a Caterpillar bulldozer can obtain information about its condition without leaving the office. And the work of dealers is simplified by a special diagnostic connector to which the Cat ET device is connected.

All main serviceable components are in direct access: the engine compartment has hinged side doors, access covers to service areas have become larger, the design of the fuel tank has been improved, etc.

The following modifications of the caterpillar d6n bulldozer are available: DS-XL, DS-LGP, FTC-XL, FTC-LGP.

Based on the main technical characteristics, the following models can be considered analogues: Case 350B, Komatsu D65E-12E, Caterpillar D6R (series II).

The Caterpillar cab is available as a special order; Roll Over Operator Protective Structure (ROPS) is standard.

Operator department

The cabin of the Caterpillar D6N bulldozer is comfortable and practical. It is equipped with:

Caterpillar D6N cab inside

• air conditioning system;
• soundproofing foam panels;
• sealed windows and doors;
• laser and satellite leveling systems AccuGrade.

To reduce noise, the cabin is additionally upholstered with sound-absorbing material. As a result, the noise level at the operator's position is 79 dB.

The hydraulic system makes it easier to control the bulldozer. The technical condition of the systems is monitored using the EMS III device, which informs the driver of the operating parameters of the main components.

The Caterpillar D6N bulldozer is a reliable and versatile machine. The special equipment is adapted to work in the Russian climate and can withstand temperature changes from 40 degrees below zero to 40 degrees above zero.

DEVICE Caterpillar D6N XL

All Caterpillar D6N Series models are designed to withstand increased loads. The Cat D6N XL version is equipped with an extended undercarriage that includes tubular bogie frames that increase the service life of the equipment due to its high resistance to damage. The guide device has direct contact with the track of the track chain, which ensures reliable fixation of the belt on the rollers. The design of the guide wheels is made in such a way that it does not allow contact with the cheeks of the links. This feature has a positive effect on the service life of the tracked part and the smoothness of movement. The adjustment is made using a reverse spring.

All versions of the Caterpillar D6N feature a high flange position above the ground, which improves ground isolation and provides additional shock protection. The SystemOneTM undercarriage is unique to the brand and is used exclusively on Caterpillar bulldozers.

Cat D6N XL Undercarriage Features:

• number of road wheels (one side) – 7;
• number of shoes (one side) – 40;
• base shoe width – 610 mm;
• lug height – 66 mm;
• track width - 1890 mm;
• support part of the caterpillar belt – 2581 mm;
• contact surface area of ​​the caterpillar belt with the ground – 3.15 sq.m;
• ground pressure – 51.6 kPa.

The Caterpillar D6N XL transmission is based on a 6-speed powershift transmission. A single-stage torque converter ensures a reduction in shock loads under negative external factors. The transmission also contains Auto-Shift and Auto-Kickdown mechanisms. The latter ensures an automatic transition to a lower gear when the load increases. The Auto-Shift function is responsible for automatic gear shifting.

The equipment cabin is distinguished by its convenience and practicality. The salon is designed for one person. The cabin is upholstered with sound-insulating foam panels and special sound-absorbing materials. Due to this, the noise level inside does not exceed 79 dB. The air conditioning system maintains the necessary microclimate in the cabin, and sealed doors and windows prevent dust from entering. The bulldozer is equipped with an AccuGrade leveling system for maximum precision in operations. The operator learns the operating parameters of the equipment using the EMS III system. As standard, the cabin is equipped with a ROPS protective structure.