Cat® D11T vs.Komatsu D475A-5

Cat® Product Information

Competitive BulletinMay 2012

Cat® D11T vs. Komatsu D475A-5

For Dealer Sales Personnel

2 May 2012TEJB9684 Cat D11T vs. Komatsu D475A-5

Table of Contents

Introduction ..........................................................................................................................................................................3

Summary/Key Selling Points .............................................................................................................................................4

Features ...............................................................................................................................................................................10

Case and Frame ...........................................................................................................................................................10

Cooling System ...........................................................................................................................................................11

Engine ...........................................................................................................................................................................12

Torque Converter/Divider and Transmission .........................................................................................................17

Brakes and Steering Clutches ..................................................................................................................................19

Final Drives ..................................................................................................................................................................20

Undercarriage .............................................................................................................................................................21

Implement and Steering Controls ............................................................................................................................24

Operator’s Station .......................................................................................................................................................28

Blades ...........................................................................................................................................................................30

Rippers and Counterweights ....................................................................................................................................31

Monitoring System .....................................................................................................................................................33

Serviceability ..............................................................................................................................................................35

D11T Carrydozer ..........................................................................................................................................................37

D475A-5 Super Dozer..................................................................................................................................................38

Summary..............................................................................................................................................................................39

Technical Specifi cations .................................................................................................................................................40

Notes ....................................................................................................................................................................................46

3May 2012 TEJB9684 Cat D11T vs. Komatsu D475A-5

Introduction

Cat® D11 track-type tractors have been working around the world proving themselves as highly productive, reliable, and durable machines backed by world class support. The Cat D11T builds on that expectation for performance, reliability, durability and operator comfort.

Since the D11N was introduced in 1987, it has become the standard of the industry for large construction and mining tractors. The R series tractors built on that standard while meeting more stringent Tier 1 emissions requirements. With changing times comes new opportunities. Caterpillar has taken every opportunity and designed the new D11T with the next generation in mind. The new D11T and D11T Carrydozer (CD) will be offered with two variations of the C32 engine with ACERT™ Technology. One will be U.S. EPA Tier 4 Final certifi ed and required for sale in the United States and Canada. The other will remain at 2006 U.S. EPA Tier 2 equivalent emission levels for sales outside of the United States and Canada.

The D11T combines power and effi ciency with advanced technology for outstanding production at a lower cost-per-yard. The durable construction of the D11T is well suited for tough working conditions. Combined with the Cat C32 ACERT engine for superior performance, fuel economy and meeting emissions targets, it keeps material moving with the lowest overall cost.

The Komatsu D475A-5, fi rst introduced in 2003 and updated in 2006 with a U.S. EPA Tier 2 engine, is the primary competitor for the D11T. The D475A-5 is primarily used in mining and large-scale heavy construction projects. The development of this tractor focused on operator comfort, sound levels, and reduced maintenance and repair cost.

The main selling points of the D475A-5 are the lock up torque converter and low cab sound levels. The low sound design focuses on sound absorbing fan blades, side enclosure with air duct, double hood, and viscous cab mounts.


Summary/Key Selling Points

• The D11T frame is a fabrication featuring box section construction, and high strength steel castings in high stress areas giving it higher strength and durability.

• The D11T has outstanding durability due to frame design containing castings used in important stress prone areas and component placement, such as the suspended undercarriage that raises the fi nal drives above the ground.

• The mainframe is built to withstand high impact loads induced by heavy dozing and ripping in hard clays, shales, and rock.

• The D11T has better ride quality, especially in reverse, than the D475A-5 due to its fully suspended undercarriage and sprocket placement.

• The elevated sprocket raises the sprocket above abrasive materials, extending sprocket life. Shock loads from the blade are directly carried to the mainframe rather than through the fi nal drive cases. More track is located aft of the sprocket for better balance and improvements to traction and fl otation while counteracting front-end rise during heavy dozing and drawbar work.

D11T Featuring Elevated Sprocket Design

• The D11T has a torque divider and a three-speed planetary transmission. The D475A-5 uses a lock-up torque converter and a three-speed planetary transmission. The torque divider, offered by Caterpillar, provides a more effi cient power train system over a broader operating range than a torque converter and does not require the operator to decide when to enable or disable lock-up capability.

• The major power train components of the D11T are designed as separate modules that are easy to remove. Komatsu uses a one-piece power module that is diffi cult to remove. The D475A-5 requires pulling off the ROPS, cab, operator platform, and fuel tank to get the power module out.

Cat Modularity Komatsu Body and Frame



• The blade tag-link design of the D11T keeps the blade closer to the tractor, improving maneuverability, tractor balance, blade penetration force, pryout force, and blade control.

D11T Tag-Link

• The D11T has standard open labyrinth seal guards to protect the fi nal drive components when working in applications where mud packing is common.

D11T Standard Open Labyrinth Seal Guards



• The D11T provides an ergonomically designed cab and electro-hydraulic controls, making the operator more comfortable and effi cient. With the updated cab interior there is more commonality across the product line and is easier to clean. Also, the new Automatic Climate Control system automatically adjusts the heating and air conditioning controls to maintain a consistent cab temperature throughout the day.

• Suite of Electronics– Standard Automatic Blade Assist (ABA) allows the blade to pitch forward and backward

automatically through preset positions to improve productivity.– Autocarry (optional) provides automatic blade control (raise and lower only) during the carry

segment of the dozing cycle.– Terrain for Grading (optional) enables an electronic site plan to be sent to the machine from

the offi ce in real-time, directing the operator where to cut and fi ll. Terrain for Grading provides high precision management of dozing and grading applications for enhanced safety, productivity and effi ciency.

– Automatic Ripper Control (optional) reduces operator fatigue and decreases wear and tear on the machine. This is done by monitoring the tractor speed with the new cab mounted Global Navigation Satellite System (GNSS) to automatically adjust engine speed and ripper depth to minimize track slip.

D11T Terrain for Grading

• The D11T features Finger Tip Controls (FTC) that require less effort and are more comfortable for long periods of operation than the D475A-5 Palm Command Control System (PCCS).

D11T Finger Tip Control Steering D475A-5 PCCS Control Steering



• An integrated electronics suite provides building blocks for future machine control and management strategies that are being developed today.

• The D11T offers optional features including a hydraulically powered ladder that can be raised and lowered for access to and from the operator station, rear platform that can be attached to the 1911 liter (505 U.S. gallon) fuel tank, and spectator sound suppression for locations where sound levels are a concern.

• Standard heavy duty guard rails are strategically placed on the edges of the fender platforms outside the cab.• Strategically placed heavy duty grab handles and non-slip steps and decking aid the operator getting

on and off the machine.

D11T Rear Platform

D11T Hydraulically Powered Ladder D11T Raised Ladder with Rear Platform



• Multiple visibility package options enhance the operator’s visibility of their surroundings and provides a broader view of the work area. The packages include a Work Area Vision System (WAVS) camera system (single or dual) and mirrors inside and outside the cab.

D11T Dual Camera System D11T Camera View from Operator’s Station

• D11T Carrydozer was developed from the standard D11T, but with the following modifi cations:– Frame has been modifi ed to provide durability and reliability in the carry dozer application.– Hydraulic specs are redefi ned for optimal performance when using a Carrydozer blade.– Carrydozer blade is designed to carry material inside the blade curvature for maximum productivity.– Heavy single shank and multi shank rippers along with optional counterweight are available for rear

attachment.• The D11T offers safety and sustainability features including ecology drains, longer oil change interval

in certain applications, remanufactured parts and components for repair, extended life coolants, S•O•SSM sampling ports, and sight gauges.



D11T Ground Level Service Option

• A standard ground level service center mounted on the rear attachment or ripper provides easy access to: secondary engine shutoff, access lighting switch, fast fuel and optional high speed engine and power train oil change.

• The D11T is supported by the unmatched worldwide Cat dealer network of trained experts that will keep the machine up and running, maximizing your equipment investment.

• World class product support through the worldwide Cat dealer network offers many repair options including piece parts, complete new components, complete remanufactured components, and dealer exchange and rebuild.

• Many Cat dealers offer extended warranty options, Maintenance and Repair Contracts (MARC), and Customer Service Agreements (CSAs).

Caterpillar S•O•SSM Lab for Fluid Analysis Remanufactured Components and Parts


D11T Case and Frame

The D11T mainframe is built to absorb high impact shock loads and twisting forces of severe dozing and ripping. The full box section design keeps components rigidly aligned. Heavy steel castings provide a strengthened main case, equalizer bar saddle, front cross member and mounting location for the forged steel tag-link trunnion. Top and bottom rails are made from continuous rolled sections to eliminate welds and machining, which provide for superior mainframe durability. Heavy steel hydraulic tubing is pressed into the main case to minimize external hoses and to ensure a leak-free drive train oil system. Robotic welding in critical areas ensures weld consistency and strength.

The pivot shaft and pinned equalizer bar maintain track roller frame alignment. The equalizer bar is a high strength steel forging. The case and frame features a one-piece cast case with provisions for ripper and ROPS mounting. It elevates the fi nal drives well above the ground level work area to protect them from impact loads, abrasion and contaminants. The power train oil reservoir is included in the one-piece rear case casting. The heavy cast saddle is a ribbed design that increases frame life. The front engine and radiator guard mounts are heavy castings as well.

The frame design allows for easy servicing of the transmission, bevel gears, steering clutches, brakes, and fi nal drives. These components are accessible directly from the rear or side of the tractor and do not require any major component removal for access.

D475A-5 Case and Frame

The D475A-5 mainframe is a “hull,” fabricated plate design. The fabricated plate design can experience excess vibrations and/or early stress fractures. The “hull” design reduces power train access. To service the torque converter, transmission, bevel gears, steering clutches, and brakes, they must be raised vertically out of the frame. As a result, the cab, ROPS, operator platform, and fuel tank must be removed to service these components. These components are combined into a single unit that Komatsu calls a “power module.”

Features


Features

D11T Cooling System

The D11T cooling system uses a two-piece radiator built with rugged, highly effi cient aluminum bar plate cores. The aluminum bar plate construction aids durability and allows for higher heat transfer and superior corrosion resistance. The aluminum bar plate radiator has 8.5 fi ns per inch density, with (optional) 6 fi ns per inch for plugging applications.

The new air to hydraulic oil cooler reduces hydraulic oil temperatures thus improving component life. The core is built using the same rugged aluminum bar plate design as the jacket water cooler.

The use of a hydraulically variable demand fan provides engine cooling capability that is matched to the ambient conditions. In cooler conditions, the fan turns at a slower speed, reducing power demands. This reduces fuel consumption in lower load factor operations. Low speed fan operation also reduces both operator and spectator sound levels.

The D11T also offers an optional hydraulic reversing fan for automatic clean-out with ultra low fan speeds for cold climate applications.

Another optional attachment for the D11T cooling system is the Mesabi Radiator.

D475A-5 Cooling System

The D475A-5 features a one piece radiator with one individual core. Komatsu does not offer optional radiator packages to meet customer needs for different application requirements.

The engine cooling system requires manual activation and uses a hydraulically driven engine cooling fan that is controlled depending on the hydraulic oil and coolant temperature. Two modes are available; reverse and reverse/clean-out to facilitate radiator maintenance. It is unclear if these modes are automatic on the D475A-5.


Features

Cat C32 Engine

C32 Engine – The D11T and D11T CD feature a Cat C32 ACERT engine to deliver the performance and effi ciency that customers demand. An engine that meets U.S. EPA Tier 4 Final emissions standards will be available for sales in the United States and Canada.

Performing at full rated net power of 634 kW (850 hp) at 1,800 rpm with a high torque rise of 21 percent, the large 32.1 L (1,959 in3) displacement and high torque rise allow the D11T to doze through tough material. Matched with high effi ciency torque divider and electronically controlled power shift transmission, it will provide years of dependable service. For higher altitude applications, the Cat C32 engine offers 22% more altitude capability over the Komatsu engine. The Cat C32 engine does not require derating up to 3658 m (12,000 ft). With the Komatsu engine no derating is required up to 2999 m (9,840 ft).

To improve high altitude performance above 3658 m (12,000 ft), Caterpillar offers an optional arrangement that uses a different impeller in the torque divider. To best of our knowledge Komatsu has no optional higher altitude arrangement.

ADEM™ A4 Engine Controller – The ADEM A4 electronic control module manages fuel delivery and air fl ow to get the best performance per liter (gallon) of fuel used. It provides fl exible fuel mapping, allowing the engine to respond quickly to varying application needs.

MEUI™ Fuel System – The Cat MEUI fuel system is a fi eld-proven design, combining the technical advancement of electronic control with the simplicity of direct mechanically controlled unit fuel injection. This system has a strong history of reliability and design integrity. It excels in its ability to control injection pressure over the entire engine operating speed range.

This system electronically controls injection pressure by monitoring the engine speed and load conditions. In the MEUI fuel systems, a low-pressure fuel transfer pump provides fuel to the injectors, which then introduce highly pressurized fuel into the combustion chamber with precise timing, duration, and pressure. The injectors pressurize the fuel to deliver very fi ne, atomized fuel particles into the combustion chamber, thus producing a more effi cient burn. Combined with electronic control, engines with ACERT Technology are producing more work for a customer’s fuel dollar.

Overhead Cams – Two, single (one per head) overhead cams are driven by gears on the fl ywheel end of the engine. Placing the cam gears at the fl ywheel end signifi cantly reduces noise and vibration. To reduce wear, two pendulum shock absorbers are mounted at the front of the camshafts. These features contribute to the long-life and durability of this engine.

Component Life – Oil-cooled pistons and full-length water cooled cylinder liners provide maximum heat transfer, and utilize additional coolant passages to provide maximum cooling to the engine. Through-hardened crankshaft journals and steel-backed, copper-lead bearings, help assure reliable performance in the toughest applications.

Fuel Heater (optional) – The optional fuel heater uses the temperature of the engine return fuel to warm the cold fuel coming directly from the tank. The heater is strategically placed directly at the fuel tank and ahead of any fi lters in order to minimize the risk of fuel gelling. Temperature regulators built into the fuel heater ensure that the heat exchange only occurs at cold fuel temperatures. The fuel heater option allows an easier transition to winter blended fuels during season changes.


Features

Air-to-Air Aftercooling – Air-to-air aftercooling on the D11T cools hot, compressed air coming out of the turbocharger which provides cooler and denser air into the air intake system. Bringing more cool air into the engine increases power generation and lowers emissions. In addition, the aftercooler, along with the tight-tolerance combustion chamber components, maximizes fuel effi ciency.

Steel Spacer – Located between the block and head to eliminate the need for block counterbores, and extend block life.

Service – Engine enclosures provide easy access to maintenance points within the engine compartment. Easier maintenance and repair is available through monitoring of key functions and logging of critical indicators. Electronic diagnostic access is possible with a single tool, the Caterpillar Electronic Technician (ET).

ET is a personal computer-based service tool that allows the technician access to service all ECMs. ET offers fl ash programming and histogram capabilities, and saves machine systems status data.


Features

The information below only refers to the C32 engine that meets U.S. EPA Tier 4 Final emission standards.

The C32 ACERT engine meeting U.S. EPA Tier 4 Final emission standards will continue to be counted on to work productively and economically in tough applications. It delivers the power and torque needed for optimal performance.

High Efficiency Turbocharger – A new high effi ciency turbocharger with a simple design and fewer moving parts enhances reliability. It delivers variable boost, dependable performance and long service life in the most demanding applications.

Emissions Reduction Technologies – To meet U.S. EPA Tier 4 Final emissions standards, Cat emissions reduction components have been designed to match application needs. D11T and D11T CD system components include:

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. The result of more than a decade of Caterpillar engineering research into this technology, the Cat NOx Reduction System is designed to be the most reliable system of its type.

Diesel Oxidation Catalyst (DOC)

• The DOC uses oxidation, a chemical process, to condition exhaust gases to meet regulatory requirements.

• The DOC does not require maintenance because it is a “fl ow-through” device and the particulate matter does not get trapped in the component.

DOC only Muffler

Integral Mounting Cradle

Aftertreatment will consist of Cat Clean Emission Module (DOC + muffl er). A Diesel Particulate Filter (DPF) is not required, so the D11T does not have a Cat Regeneration System.

MEUI-C Fuel System – Developed from the fi eld proven MEUI-A system while increasing fuel effi ciency and further NOx reduction.

• EUI injector platform retained• Precise multiple injection capability• Injection pressure – 30,000 psi


Features

Ultra Low Sulfur Diesel (ULSD) Fuel and Low Ash Oil

• ULSD fuel (≤ 15 ppm or mg/kg) sulfur is required• Cat ECF-3 spec (API CJ-4 and ACEA E9)

low ash oil is required

U.S. EPA Tier 4 Testing and Validation – The testing and validation program of Cat Tier 4 engines is the largest in Caterpillar history. This industry-leading engine validation program will ensure that all new Cat engines deliver reliable performance from the fi rst day on the job.

Multi-segment, multi-phase validation of prototype, pilot and support machines was conducted in a wide variety of the most demanding applications.

• Developed a new manufacturing plant process designed to improve production and quality.

• Advanced power system simulators provide extensive modeling, analysis and testing.

• Next generation simulation techniques enhance cooling system design, increase electronics capabilities and optimize power train integration.


Features

Komatsu SAA 12V 140E-3 Engine

The D475A-5 uses a Komatsu SAA 12V 140E-3 diesel engine, with net power of 641 kW (860 hp) at 2,000 rpm with fan fully engaged. The SAA 12V 140E-3 engine has a bore of 140 mm (5.51 in) and a stroke of 165 mm (6.5 in). It uses a direct injection fuel system with an all-speed electronic governor. The engine has no derating up to 2999 m (9,840 ft).

The intake air system is turbocharged and uses air-to-air after cooler.

The SAA 12V 140E-3 engine is also used in HD785-7 off-highway truck, PC2000-8 shovel, and WA800 and WA900 wheel loaders.

The engine is emissions certifi ed for Tier 2 EPA.

The Cat C32 engine with a displacement of 32.1 L (1,959 in3) has a 5.3% displacement advantage over the Komatsu SAA 12V 140E-3 engine which has a displacement of only 30.48 L (1,860 in3). The larger displacement and high torque rise of the C32 allow the D11T to doze through tough material more effi ciently.


Features

D11T Torque Divider and Transmission

The D11T is equipped with a single stage torque converter with an output torque divider that sends 75 percent of engine torque through the converter and 25 percent through a direct drive shaft for greater driveline effi ciency and higher torque multiplication. The torque converter shields the driveline from sudden torque shocks and vibration. Using a torque divider provides higher effi ciency than a normal torque converter and it does not require the operator

to select the operating mode. The Komatsu uses a lock-up clutch which requires the operator to choose when to enable or disable the lock-up capability.

The planetary power shift transmission has three speeds forward and three speeds reverse, utilizing large diameter, high-capacity, oil-cooled clutches. Some of the features of the transmission include:

• Modulation system permits fast speed and direction changes.

• Modular transmission and bevel gear slide into rear case for servicing ease, even with ripper installed.

• Oil-to-water cooler for maximum cooling capacity.• Forced oil fl ow lubricates and cools clutch packs

to provide maximum clutch life.• Controlled throttle shifting regulates engine

speed during directional shifts for smoother operation and longer component life.

• Electronic Long Range Transmission (ELRT) controlled throttle provides smoother shifting and reduces shock loads on the components. This feature provides auto-shift capability that allows the operator to go from fi rst forward to second reverse just by making a directional change. The operator can override the auto-shift feature at any time.

The D11T electronic transmission control system is equipped with auto downshift. This feature adds value by enhancing safety and productivity during the dozing cycle. If the torque converter speed ratio drops to a specifi ed threshold, this function automatically downshifts the transmission. However, manual upshift is still available. After a manual upshift is made, the auto downshift is prevented for 2 seconds. This function works in forward and reverse gears. Auto downshift switch has no function unless the switch functions is enabled by the operator in Advisor.


Features

D475A-5 Torque Converter and Transmission

The D475A-5 features an automatic lockup torque converter system. The lockup mode, when selected by the operator, allows the system to automatically engage the torque converter lockup clutch. Locking up the torque converter transmits all the engine power directly to the transmission resulting in increased effi ciency. This is only when clutch is locked up. When heavy loads are applied to the tractor the clutch will unlock resulting in lower effi ciency operation.

Best productivity in dozing applications is achieved by loading the blade to the point that ground speed is 1.4 to 1.6 mph. This maximizes productivity by minimizing reverse time. At these speeds it is not uncommon to see the D475 running with an unlocked torque converter. This reduces overall effi ciency and productivity.

The Komatsu TORQFLOW transmission consists of a water-cooled, 3-element, 1-stage, 1-phase torque converter with lockup clutch and planetary gear sets. The multiple-disc clutch transmission is hydraulically actuated and force-lubricated for heat dissipation.

The D475A-5 utilizes a new power train electronic control system. The controller registers the amount of operator control (movements of lever and operation of switches) along with machine condition signals from each sensor to accurately calculate the control of the torque converter and transmission to optimize machine operation.

This tractor has an Electronic Controlled Modulation Valve (ECMV) controlled transmission. This allows for automatic adjustments of each clutch engagement depending on travel conditions such as gear speed, rpm, and shifting pattern. This feature is designed to provide shockless and smooth clutch engagement; while improving component reliability, component life and operator ride comfort.


Features

D11T Brakes and Steering Clutches

The D11T features high capacity brakes (high power dissipation) that are hydraulically released, spring applied, and have computerized electronic control for excellent brake modulation while providing safe and reliable braking performance. Thick, large diameter plates and disks provide high torque capacity and service life. The brake housing has cast-in ribs for more durability. A single pedal simultaneously applies brakes to both tracks for fast stops.

The parking brake is electronically controlled.

The D11T features standard oil cooled, wet steering clutches. Both the clutches and brakes are serviceable from the side of the tractor.

D475A-5 Brakes and Steering Clutches

The D475A-5 features an Electronic Controlled Modulation Valve (ECMV) system that provides sensors to monitor the machine operating conditions and electronically control the steering clutches and wet, multi-disc brakes. Depending on the conditions the ECMV controller adjusts every clutch engagement automatically.

The ECMV sensors monitor application parameters such as size of load during dozing, and incline angle of slope and load provides smooth and easy operation by reducing counter steering on downhill travel. When dozing and turning, ECMV automatically controls stroke ratio of steering clutches and brakes depending on degree of load.

Wet steering clutches are standard on the D475A-5.

Interconnected control of steering clutch and brake reduces the load on the transmission during forward and reverse directional changes, resulting in the improved durability and reduced component maintenance cost. Serviceability of the Komatsu torque converter, bevel gear, transmission, steering clutches and brakes is adversely affected by the design of the tractor. All of these components are combined into a single unit called a power module which is housed inside the hull style frame. Access to these components requires the ROPS, Cab, Platform, and fuel tank to be removed.

On the D11T/D11T CD all components mentioned above can be removed without removal of the ROPS, Cab, Platform, and fuel tank. Repairs should be faster and easier on a Cat D11T/D11T CD.


Features

D11T Final Drives

The D11T features an elevated sprocket with large, strong fi nal drives for durability and long service life. Double reduction planetary gears, with tapered roller bearings, spread torque loads for increased life.

Gears and planet carriers are sized for high loads, while the axle and spline are larger for higher torque. The support hub is made of a high strength casting for increased life and is large and strong at the inboard bearing to accommodate higher drawbar pull. The hub spline improves fatigue life and the sprocket bearings are designed for increased load capacity.

The elevated fi nal drives are protected from ground and implement induced impact loads, extending power train life. Open Labyrinth Seals are standard. This seal minimizes wet material entry into the fi nal drives and is ideal for mud-packing applications. The new seal provides replaceable seal wear surfaces and is retrofi table to earlier tractor models.

Sprockets have four bolt-on, replaceable rim segments with more bolts to resist high impact loads. Abrasion-resistant steel increases the sprocket segments wear life.

D475A-5 Final Drives

The D475A-5 double-reduction fi nal drive consists of spur and planetary gear sets. Segmented sprocket teeth are bolt-on for easy replacement.

The oval track design places the fi nal drives at ground level exposing these components to additional impact loads that can result in decreased life of the fi nal drive components. It also allows impact loads to be passed into the power module which could result in a decrease in service life.


Features

D11T Undercarriage

Caterpillar developed the elevated sprocket to deliver the benefi ts of suspended undercarriage. This design transfers implement shock loads to the mainframe, so fi nal drives, axles, and steering components are isolated from harsh impact loads commonly seen in large track-type tractor applications.

The elevated sprocket also keeps fi nal drives and sprocket teeth away from abrasive materials and moisture, resulting in longer fi nal drive and seal life.

Because more track is located to the rear of the roller frame, the elevated sprocket improves traction and fl otation. It also counteracts front-end rise during heavy dozing and drawbar applications.

The suspended undercarriage has a low center of gravity and wide track gauge. When working in uneven or rocky conditions, the bogie system keeps more track on the ground for increased stability.

The suspended design makes tractors more stable in rocky conditions because the track readily adjusts to match the ground contour; the more track in contact with the ground, the greater the machine stability. With 4444 mm (14 ft 7 in) of track on the ground, the D11T delivers exceptional balance.

The elevated sprocket and suspended undercarriage work together to reduce shock loads to tractor components, increasing traction and giving the operator a smoother ride. These benefi ts translate into higher production and longer component life.

To increase strength, durability, and reliability, the undercarriage has large idler caps and roller caps with an abutment joint and three-bolt mounting.

Optional attachment idler guards further improve undercarriage wear life in some applications. These guards bridge the gap between the track roller frame and the idler, and substantially reduce the fl ow of abrasive material into the track chain. The guards’ steel-reinforced rubber construction allows them to follow the oscillation of the idler, while still being durable for long life. Guards are recommended for high abrasion, low impact applications.

The D11T offers optional carrier rollers, and the base tractor is equipped with carrier roller mounts for more fl exibility as job conditions change.

Previously, mounts had to be welded to the roller frame before a carrier roller could be added. The new, integrated mounts minimize the time needed to reconfi gure the tractor.

The end pin bearings in the equalizer bars benefi t from remotely greased bearings to maximize service life and eliminate daily maintenance. This design provides impact resistance as well as a service point that is easy to access. The center pin bearing is made with oil-impregnated powdered metal for longer life.

The pivot shaft and pinned equalizer bar eliminate diagonal braces, which improves ground clearance and track oscillation, increasing traction in all underfoot conditions.


Features

A special coating on the track bushing provides an abrasion- and corrosion-resistant protective layer on the end of the bushing. The coating improves track sealability. In addition, 75W140 synthetic oil reduces pin galling and increases seal life. This exclusive technology reduces unscheduled track maintenance and improves machine reliability.

The D11T features the Cat Sleeve Bearing Track that is a patented design proven in a series of fi eld tests to extend track life. Because it extends undercarriage life, the need for service before normal bushing turn time is also reduced – which in turn reduces maintenance costs as well as unscheduled downtime. Sleeve Bearing Track eliminates galling between pin and bushing, increases track re-seal point from 4,000 to 6,000 hours, and a separate post-turn track seal provides sealability after bushing turn.

Positive pin retention prevents track link assembly end-play generation while providing additional benefi ts that include preventing link movement on pin, improved oil retention (sealability), and consistent seal face contact on the bushing.

Changes to the geometry of the D11T master link provides improved resistance to cracking through a larger radius in the end serrations, increasing service life.

Standard shoe size is 710 mm (28 in). Shoes are available in additional sizes: 810 mm (32 in), and 915 mm (36 in). Abrasion resistant material, trapezoidal holes, and tall tough steel links for highly abrasive, high wear applications are also available as options.

The D11T elevated sprocket design provides improved operator comfort resulting in higher productivity. This is because when an obstacle is encountered on the return portion of a dozing cycle by the D11T the fi rst thing to encounter the obstacle is the track with an idler supporting it. The obstacle can cause the rear idler to experience up to 107 mm (4.2 in) of

upward travel as it oscillates. This idler movement allows the D11T to build a ramp to smoothly climb over and then envelop the obstacle reducing the shock loads experienced by machine and operator. The reduced shock loads provides an improvement in machine life and keeps the operator comfortable allowing them to maintain the highest level of production possible. This is only possible with a machine that has a fully suspended undercarriage. Cat elevated sprocket machines are the only Large Track-Type Tractors that can offer this capability.

D475A-5 Undercarriage

The Komatsu K-Bogie undercarriage System has the current features:

• Effective length of track on ground is consistent. Shoe slippage is minimized therefore, high traction is obtained.

• Oscillating front idler.• K-bogies oscillate with two fulcrums, and

track roller vertical travel is greatly increased. Because track and rollers are always in contact with track link, impact loading to undercarriage components is reduced and durability of components is improved.


Features

• Undercarriage life is improved due to better control of track chain alignment with track rollers.

• Vibration and shock is reduced when traveling over rough terrain.

Standard shoe size is 710 mm (28 in). Shoes are available in additional sizes: 810 mm (32 in) and 910 mm (36 in).

The oval track undercarriage places the fi nal drive close to the ground on the D475A-5. This provides reduced ride comfort for the operator resulting in decreased productivity. The fi rst thing to reach an obstacle during the return part of the dozing cycle is a track supported by a rigidly mounted sprocket attached to the fi nal drive. With the fi nal drive close to the ground, there is no ramp for the tractor to transition over the obstacle resulting in the tractor “jumping” over the obstacle. This produces a signifi cant shock load into the tractor that must be absorbed by both machine and operator. Over the course of a long day these shock loads add up and can cause an operator to reduce travel speeds to provide a better ride for improved comfort which lowers machine productivity.


Features

Implement and Steering Controls

Reduced operator fatigue for increased performance.

D11T Dozer Control Joystick

Dozer Control Joystick – A low-effort electronic dozer control handle gives the operator control of all dozer functions with one hand. Fore/aft movement of the joystick lowers and raises the blade. Left/right movement directionally tilts the blade. Blade response and blade fl oat can be set/adjusted using the Advisor Panel.

The thumb lever at the top of the handle and the trigger switch controls blade pitch fore and aft.

The two thumb buttons to the left of the implement control provide control over the semi-automated blade pitch functions that Dual Tilt provides. Blade pitch for load, carry and spread segments can be preset on Advisor and controlled by one button. The other button is used for the optional Autocarry feature.

• Lower-Raise – Pushing joystick forward will lower the blade. When joystick is released, it will return to the hold position. Pulling back on joystick will raise the blade. When joystick is released, it will return to the hold position.

• Float – Pushing joystick fully forward will move the blade control to fl oat. When joystick is released, it will return to the hold position while staying in fl oat function. The fl oat function will be deactivated through a dozer lift command.

• Tilt – Pulling joystick to the left will lower the left side of the blade. Pulling joystick to the right will lower the right side of the blade.

• Pitch – Rolling the thumb lever to the left will pitch the top of the blade towards the machine. Rolling the thumb lever to the right will pitch the top of the blade away from the machine. The trigger switch will do the same.

Automated Blade Assist Controls – A semi-automatic dozer control that makes use of preset blade pitch positions. This increases effi ciency while reducing operator workload. It can be controlled with the two thumb buttons on the dozer control or the push button key pad.

D11T Electronic Ripper Control

Electronic Ripper Control – A rigidly mounted handgrip provides fi rm support for the operator even when ripping in the roughest terrain. The low effort thumb lever controls raising and lowering.

The fi nger lever controls shank-in and shank-out positioning. The programmable Auto Stow feature automatically raises the ripper to the full up position. Programmable options are to full lift, full lift and shank-in, or full lift and shank-out.


Features

Automatic Ripper Control (optional) – Automatic ripper control is a new feature that reduces operator fatigue and decreases wear and tear on the machine. This is done by monitoring the tractor speed with the new cab mounted Global Navigation Satellite System (GNSS) to automatically adjust engine speed and ripper depth to minimize track slip.

Performance Monitor – The monitoring system collects machine data and provides real-time feedback on machine productivity to optimize performance.

Finger Tip Controls (FTC) – Clustered for easy, one-handed operation to the operator’s left. They control steering, machine direction and gear selection.

Enhanced Auto Shift (EAS) – A new standard feature for the D11T and D11T CD is Enhanced Auto Shift (EAS). EAS improves fuel effi ciency by automatically selecting the optimal reverse gear and engine speed combination based upon power train load and desired ground speed. This feature functions similar to an automatic transmission when traveling in reverse. The operator can set a desired track speed in reverse by using the upshift and downshift buttons while using EAS, and the machine will automatically adjust the gear and engine speed to maintain this desired track speed. Once the track speed is set in automatic mode no operator intervention is needed.

Autoshift – This feature boosts productivity and reduces operator fatigue by automating the transmission settings to best match the job conditions. Autoshift mode enables the operator to preset a forward or reverse gear for directional changes. When activated with the switch on the right console, an icon on the front instrument cluster lights up. A directional shift to the forward position will automatically shift to either fi rst or second gear, based on the operator’s preference. A directional shift to the reverse position will go to the mode set up by the operator.

Modes available are:

1. 1F – Auto

2. 2F – Auto

3. 1F – 2R

4. 2F – 2R

5. 2F – 1R

6. Off Manual Mode

The top banner on the Advisor screen will show forward gear selected on the left side, center will show reverse gear selected or reverse speed if EAS is active.


Features

Terrain for Grading (optional) – Provides high precision management of dozing and grading applications for enhanced safety, productivity and effi ciency. The system enables an electronic site plan to be sent to the machine from the offi ce in real-time, directing the operator where to cut and fi ll. A graphical map of the design plan and a view of the machine’s horizontal and vertical position simplify operation and enhance production. GNSS technology (centimeter-level) and in-cab computing capabilities combine for precise grade control. Ideal applications include roads, leach pads, dump areas, and reclamation sites.

Autocarry (optional) – Autocarry provides automatic blade control during the carry segment of the dozing cycle by measuring ground speed and track slip with a robust GNSS cab mounted receiver. It will automatically raise and lower the blade to optimize machine productivity by maintaining a desired blade load on the tractor. It is intended to enhance the operator’s productivity in high production earthmoving with carry distances over 30.5 m (100 ft).

D475A-5 Blade and Ripper Controls

D475A-5 Steering Control

D475A-5 Implement and Steering Controls

The D475A-5 is equipped with PCCS (Palm Command Control System) that provides the machine control systems. The palm command electronic controlled travel joystick presents the operator with fi ne control, but the position for the hand may be uncomfortable to some operators for extended operating periods.


Features

Gear shifting is done with thumb push buttons and preset travel speed selection function is standard to enable the operator to select forward and backward travel speed among three preset patterns and manual shift.

The auto-shift down function provides a controller that monitors the engine speed, travel gear, and travel speed. When a load is applied and the machine travel speed is reduced and the controller automatically shifts down.

The blade control joystick has PCC (Proportional Pressure Control) valve and a similar type joystick as the travel control joystick. The ripper control lever is adjustable.

Komatsu does not offer a machine control solution like Caterpillar’s Enhanced Auto Shift (EAS). EAS which is standard on the D11T and D11T CD improves fuel effi ciency by automatically selecting the optimal reverse gear and engine speed combination based upon power train load and desired ground speed.


Features

D11T Operator’s Station

Wide Panoramic View – The operator station offers an exceptional viewing area. A large view hole in the single-shank ripper frame provides a view of the ripper tip. The tapered hood, notched fuel tank, and narrow ripper carriage gives the operator a clear line of sight to front and rear work areas. The laminated glass door windows provide an excellent view to the blade end bits.

The D11T has many features to increase operator comfort such as Finger Tip Control (FTC) steering, adjustable armrests and Cat Monitoring Display System. The combination dash mounted instrument cluster and the right console mounted Advisor Monitoring System provide key machine operating information and give the operator and service technician insight into the machine’s operation and maintenance needs. The monitoring system display is illuminated for excellent visibility in low light and is glare resistant for easier viewing in bright light.

The list of standard convenience features includes a radio-ready cab, rearview mirror, air suspension seat, 76 mm (3 in) retractable seatbelt, foot rests, built-in storage space with tie-downs, fi rst aid kit or other personal items, cup holder, inside door releases, power point plug-in and intermittent low and high speed window wipers. Other features include:

• Automatic Climate Control system – Automatically adjusts the heating and air conditioning controls to maintain a consistent cab temperature throughout the day. Conveniently located air circulation vents evenly distribute airfl ow within the cab. Controls are located in the headliner and are easily accessible from the operator seat.

• Fuse Panel and Diagnostic Access – The electrical service compartment features a single location fuse panel that includes a diagnostic port for the Cat ET to connect for rapid machine diagnostics.

• Comfortable Operation – Standard isolation-mounted cab reduces noise and vibration. The cab is pre-wired for a 12-volt or 24-volt radio, equipped with two speakers, and antenna and a radio mount recess in the headliner. Other features include IPOD/MP3 player ready.

• Cat® Comfort Series Seat – The Cat Comfort Series Seat has eight adjustment controls for optimal support and comfort. The thick contoured seat cushion with adjustable 10-degree to 15-degree tilt angle and rolled-down front edge put less pressure on operator’s thighs. Seat side bolsters restrain side-to-side movement, especially when working on steep grades or side slopes. Seat material contains special backing, which is fused, not sewn, to the underside of the fabric. The seat and suspension are designed for 10,000-hour life. An optional heated and ventilated seat is available for increased operator comfort.


Features

• Visibility Arrangements (optional) – The visibility arrangements are offered with one or two cameras. These arrangements include a camera system and mirrors to enhance the operator’s visibility of his surroundings and provide a better view of his work tool. Mirrors are mounted to the right and left lift cylinders. The camera system includes a 179 mm (7 in) color display mounted to the front dash and a 115 degree horizontal camera mounted on the top of the ROPS. The one camera system provides rearview visibility; the two camera system provides additional visibility to the ripper when using the optional larger fuel tank.

• Operators Arrangement (optional) – Modifi es operator controls and platform to allow operator to sit at the highest and most rearward position and easily reach the pedals. This optional attachment is designed to improve the visibility for shorter operators.

• Enhanced Glass with Precleaner (optional) – Two enhanced glass options are available. Dual pane glass includes a powered precleaner to help improve the cab air quality in debris and dusty applications. 40 psi (275 kPa) glass is designed to withstand external pressures up to 40 psi (275 kPa) and includes an air precleaner with dual rear window wipers.

All of these features provide the D11T an industry leading operator environment that provides high productivity, effi ciency, and comfort.

D475A-5 Operator’s Station

The D475A-5 provides a new hexagonal design cab with large tinted glass windows. The cab is mounted using a hyper-viscous cab mounts providing shock and vibration absorption. The operator can adjust the seat 15 degrees to the right for improved visibility and is tiltable for downhill dozing. The armrests are independently adjustable to allow for individual operator preference. The height of the blade control armrest is adjustable in three stages. The transmission and steering controls move with the seat.

The D475A-5 is equipped with an automatic air conditioner. Once the operator sets a desired temperature in the cab, the computer keeps that temperature automatically, detecting changes of the inside and outside temperatures and sunlight.

The cab features an insulated double fl oor, thicker glass in the door and increased pressurization from improved window seals.

Machine control buttons and interface on the console are not within comfortable reach of the operator. The joystick steering control increases arm movements required for machine steering input.

Standard features include air conditioner with heater and defroster, air-suspension seat with tilt adjustment, double door wiper, lighting system, rearview mirror, radio with AM/FM cassette, 76 mm (3 in) retractable seat belt, hot and cool storage box, and sun visor.


Features

D11T Blades

The D11T offers fi ve types of blades; high-capacity universal blade (U), semi-universal blade (SU), reclamation blade, three coal blade sizes ranging from 64 m3 (83 yd3) to 75 m3 (98 yd3), and a Carrydozer blade. Additionally, the standard abrasion feature of the “SU” blade and “U” blade extend blade life in more severe applications. Abrasion blades are equipped with rock guards, wear plates and extended wear life cutting edges and end bits.

All D11T blades feature a strong box-section design that resists twisting and cracking. Blades are made of high tensile strength steel that stands up to the most severe applications. Heavy moldboard construction and hardened bolt-on cutting edges and end bits add strength and durability. Cutting edges are made of DH-2™ steel. End bits are made of DH-3™ steel to provide maximum service life in tough materials.

The standard dual tilt feature improves load control and allows the operator to optimize the blade pitch angle for each portion of the dozing cycle, while a single lever controls all blade movements, including the optional dual tilt. Standard ABA allows the blade pitch for load, carry, and spread to be preset.

The tag-link blade mounting brings the blade closer to the machine for excellent maneuverability, machine balance, and blade penetration. The tag-link also eliminates the need for diagonal bracing because it transfers side loads to the main frame instead of the dozer pusharms. The design has fewer parts for reduced wear and lower maintenance costs, and it provides solid lateral stability and better cylinder positioning for constant pryout independent of blade height. In addition, having the blade closer to the front of the machine provides more precise dozing and load control.

D475A-5 Blades

The D475A-5 has three blade options: semi-universal dozer, universal dozer, and coal. A super (carry) dozer option is also available. The front and sides of the blade use high-tensile strength steel.

The standard dual tilt feature gives twice the dozer tilt angle and tilt speed compared to a conventional single tilt system.


Features

D11T Rippers and Counterweights

The D11T has optional single and multi-shank rippers available. Rippers are made to penetrate tough material fast and rip thoroughly for use in a variety of materials. The standard ripper hydraulic lines are Cat XT™-3 ES hose for durability and reliability.

The (optional) Automatic Ripper Control is a new feature that reduces operator fatigue and decreases wear and tear on the machine. This is done by monitoring the tractor speed with the new cab mounted Global Navigation Satellite System (GNSS) to automatically adjust engine speed and ripper depth to minimize track slip.

Enhanced visibility to the tip is made possible by the machine’s slotted fuel tank and large view hole in the ripper frame. Increased strength and productivity is realized from its large, one-piece shank. Superior ripper carriage design features heat treated spacer bars in the shank pocket for increased shank life. And the ripper frame design is streamlined and narrow for minimum clogging and slab retention. The operator can adjust the single shank ripper depth from the seat using a standard single-shank hydraulic pin puller.

The multi-shank ripper tailors the tractor to the material by using one, two or three shanks. Hydraulic pitch adjustment cylinders vary the shank angle to get the best penetration so the material is lifted and shattered.

On the standard D11T, Caterpillar offers the following ripper options:

1. Single-shank standard ripper

2. Single-shank Carrydozer ripper

3. Multi-shank standard ripper

4. Multi-shank leach pad ripper

Standard and deep shanks are both available for both Single-shank standard rippers and Single-shank Carrydozer rippers on the standard D11T.

A Carrydozer ripper option is available for extreme ripping applications or when rear machine weight is needed for balance.

On the D11T Carrydozer Caterpillar offers the following ripper options:

1. Single-shank Carrydozer ripper

2. Multi-shank Carrydozer ripper

Standard and deep shanks are both available on the Single-shank Carrydozer ripper.

An optional leach pad ripper is available for lighter duty ripping to a depth of 3.35 m (11 ft).

A centralized, ground access system for lubricating single-shank and multi-shank rippers is available as a custom attachment. The single location system allows access to all grease fi ttings without the use of a ladder or other climbing device.


Features

If the tractor is not equipped with a ripper, an optional rear counterweight provides proper tractor balance to maximize dozing production.

D475A-5 Rippers and Counterweights

The D475A-5 has optional single and multi-shank rippers available. The variable giant ripper is a parallelogram single shank ripper with a variable ripping angle and an adjustable depth in four stages by a hydraulically controlled pin puller. The multi-shank ripper is a three shank ripper with a hydraulically controlled parallelogram where the ripping angle is variable and has a two stage adjustable depth.

The track shoe slip control system constantly controls engine power output with the decelerator while ripping.

A counterweight is available as an optional attachment.


Features

D11T Monitoring System

Cat Monitoring Display System – The combination dash mounted instrument cluster and the right console mounted Advisor Monitoring System provide key machine operating information and give the operator and service technician insight into the machine’s operation and maintenance needs. The monitoring system includes:

• Alert indicators• Digital display features transmission gear,

track speed (ground speed if Global Navigation Satellite System (GNSS) equipped), and service hour meter

• Five gauges (hydraulic oil temperature, engine coolant temperature, fuel level, torque converter oil temperature and engine speed)

• “Self” tests at every start• Fault codes for easier troubleshooting• The track odometer system records total forward

and reverse distances, total fuel consumption and other operating parameters

• Menus to create/set operator profi les (machine confi gurations)

• Support 27 languages• Machine parameter status screens• Limp home mode support available for certain

implement and steering system faults that allows limited machine controls

The monitoring system display, with easy-to-read gauges, indicators and warning lamps, keeps the operator aware of machine conditions. The monitoring system display is illuminated for excellent visibility in low light and is glare resistant for easier viewing in bright light.

VIMS™ 3G – Enables your equipment to provide detailed, up-to-the-minute data about its own health and working conditions by monitoring key temperatures, pressures, and more. The system gathers historical trends, histograms, events and more for off-board analysis. Additional subscription required.

Cat Product Link (optional) – This option, standard in most regions of the world, allows the customer or dealer to obtain machine diagnostics and location information remotely through satellite technology. Product Link provides updates on service meter hours, fuel burn, machine condition and machine location, as well as integrated mapping/route planning and all logged diagnostic codes. Note: Product Link licensing not available in all areas.


Features

D475A-5 Monitoring System

Monitor with Self-Diagnostic Function – If the monitor fi nds abnormalities, the corresponding warning lamp blinks and warning buzzer sounds. When abnormalities occur during operation, user code and service meter are displayed alternately. When a high importance user code is displayed, a caution lamp blinks and warning buzzer sounds to prevent the development of serious problems.

VHMS (Vehicle Health Monitoring System) – Monitors the condition of various components on the machine. Self-diagnostic function alerts the operator when it fi nds abnormalities. When abnormalities occur during operation, service meter and user code are displayed. Orbcomm is paired with VHMS to send data through a network of satellites that allow the VHMS data to be displayed using a secure website. This process is supported by the Komatsu distributors, factory and design team.


D11T Serviceability

The D11T features sight gages, convenient fi lter locations, improved access to oil and coolant S•O•SSM sampling ports, and engine compartment mounted work lamps making daily and periodic service faster and easier. When equipped with a dozer and a ripper, there are only 18 lube points.

Engine Oil Filters – Engine oil fi lters are located on the engine for easy servicing access and minimal downtime. Service time is reduced with the high speed oil change system.

Major components such as the engine, transmission, brakes, and fi nal drives are designed as modules and most can be removed without disturbing or removing other components such as the cab. This means less service time and more productivity.

Ecology drains provide an environmentally responsible and effective way to drain fl uids during service intervals. They allow fl uids to be drained into an approved container. Ecology drains are included on the radiator, hydraulic tank, engine oil tank, torque divider and transmission.

Fast Fuel System – The fast fuel system, with positive fuel shut-off to prevent fuel spillage, can reduce fuel waste and decrease downtime.

Ground Level Service Options – The ground level service center mounted on the ripper cylinder provides easy access to:

• Secondary engine shutoff• Access lighting switch turns on the forward

ROPS lights to light the access path to the machine. The lights will stay on until you start the tractor or when a confi gurable timer expires (10 minute default).

• Delayed lighting turns on the forward ROPS lights to light the path when getting off the machine.

• Fast fuel• High speed engine and power train oil change

(rear location is optional)

Ok-to-Start – The new Ok-to-Start strategy provides electronic fl uid level verifi cation at startup on the power train and engine oil systems. All information is available via the Advisor Monitoring System within the cab.

If equipped with a ripper, the D11T offers an optional attachment that provides ground level access to grease the ripper pins on the single and multi-shank rippers.

An optional rear platform converts the top of the optional high capacity fuel tank into an access platform with slip resistant surfaces, handrails, and kick plates. The 1911 liter (505 U.S. gallon) fuel tank with rear walkway is offered to provide a means of easily cleaning the rear cab window, repairing rear mounted lights, and providing access to the fuel fi ller cap in the event that the fast fuel fi ll system is not being used.

Genuine Cat Remanufactured parts are available for drive train, engine, and hydraulic components. These components have the same warranty and reliability as new products at cost savings of 40 percent to 70 percent. When parts are remanufactured, about 85 percent of the energy expended during the original manufacturing process is preserved as a result.

Features


Using remanufactured parts not only saves the customer money, but also benefi ts the environment.

Caterpillar offers many rebuild options when most competitive models would require replacement, Cat equipment can be rebuilt to deliver a cost effective second life. The extensive Certifi ed Rebuild programs incorporate the very latest Cat technology and critical engineering updates into the machine at a fraction of the cost of buying new. Caterpillar quality standards are just as stringent the second time around – because only trained dealer service professionals and only Cat parts are used to complete a certifi ed rebuild. A Cat Certifi ed Power Train Rebuild is also an option for customers interested in restoring life only to their machine’s power train components.

The Cat dealer network of trained experts will keep you up and running, maximizing your equipment investment. Nearly all D11T parts can be found at Cat dealer parts counters. Part options offered by the dealer include piece parts, complete new components, reman complete components, and dealer rebuild and exchange. Cat dealers use a worldwide computer network to fi nd in-stock parts to minimize machine downtime. This will shorten repair time and lower costs.

D475A-5 Serviceability

The D475A-5 provides a centralized service station where the transmission and torque converter oil fi lters are both arranged next to the power train oil level gauge.

The pressure checking ports for the power train components are centralized to promote quick and simple diagnosis.

The modular power train design provides power train components that can be dismounted and mounted without oil spillage. Despite benefi ts of no oil spillage, the cab must be removed to service the torque converter and transmission components.

Service of the power module requires the cab, ROPS, operator platform, and fuel tank be removed.

Wet disc brakes require less maintenance and provide a long service life.

Dual insulated gull-wing engine side covers facilitate engine maintenance and fi lter replacement. Side covers are a thick one-piece structure with bolt-on latches.

Features


Features

D11T Carrydozer (CD)

The D11T and D11T Carrydozer (CD) are highly effective mass dozing tools that are ideally suited to job applications requiring long push distances. The D11T CD’s higher operating weight and unique carrydozer blade allow it to excel.

The frame has been designed to provide additional durability and reliability due to the high loads associated with the carry dozer application.

The Carrydozer blade has a unique “bucket” shape that allows it to carry several cubic yards of material

inside the blade curvature for maximum productivity. This acts as a counterweight that allows the Carrydozer to push more material per pass than a standard D11T. This also increases the effective weight of the tractor which enables pushing a larger pile of material in front of the blade. The carrying/pushing effects combine to signifi cantly increase productivity by up to 15%. The blade features a strong box section made of high-strength, low-alloy steel to resist twisting and cracking, and additional wear plating is not necessary. Standard rock guards and defl ector shields on the back of the blade help protect lift and tilt cylinders from spillover. The blade capacity is 43.6 m³ (57 yd³).

The Carrydozer will not be as effective as the “U” or “SU” dozer in tightly packed or poorly shot material. It is also more sensitive to carry-back in sticky materials.

The standard shoe size has been increased from 710 mm (28 in) to 915 mm (36 in).

The implement hydraulic pump has been resized to match the larger blade pitch cylinders and longer pitch length resulting in faster blade pitch cycle times for the Carrydozer blade.

Heavier Carrydozer single and multi shank rippers are available as optional attachments. When a ripper is not used, an extended rear counter weight is required for optimum tractor balance.

The operating weight for the Carrydozer is 112 698 kg (248,456 lb). The operating weight includes lubricant, coolant, full fuel tank, hydraulic controls and fl uids, 910 mm (36 in) extreme service shoes, 11 carry dozer, single-shank ripper (optional equipment) and operator.


D475A-5 Super Dozer

The D475A-5 Super Dozer is based off of the standard D475A-5. The Super Dozer provides a large capacity super dozer blade providing lower dozing resistance and provides 15% more production. The blade capacity is 45 m³ (58.9 yd³).

The fast fuel has become standard and the standard shoe size has been increased from 710 mm (28 in) to 810 mm (32 in).

Optional rear attachments include a single variable giant ripper and counterweight.

The operating weight for the Super Dozer is 113 200 kg (249,560 lb). The operating weight includes strengthened super dozer blade, counterweight, steel cab, ROPS, operator, standard equipment, rated capacity of lubricant, coolant, and full fuel tank.

Features


Summary

Caterpillar listened to customers around the world and has continued to produce a machine with an excellent reputation for reliability, durability, and productivity. Engineered for demanding work, the D11T is designed to be productive in a variety of applications including heavy dozing, ripping, pushing scrapers and land clearing. The D11T will keep material moving with the reliability and low operating costs that customers have come to expect from Cat machines.

The Cat D11T machine durability is built on the foundation of a case and frame engineered with integrated casting design. Ride quality from the suspended undercarriage and component placement provides an environment for more productive operation. Modular design aids in the power train repairability, which is a class ahead of the Komatsu D475A-5. The tag-link design provides solid lateral stability and better cylinder positions for constant break out force, independent of blade height. The standard Enhanced Auto Shift, Automatic Blade Assist, and optional Terrain for Grading and Autocarry technology offerings provide operational effi ciency improvements resulting in lower cost per ton. Enhanced safety features from the factory such as standard heavy duty guard rails, steps, handles and optional hydraulic ladder, rear platform, and visibility arrangement provide additional benefi ts to the customers. These attributes of the D11T and the steadfast Cat dealer network, keep the D11T ahead of its competitor, the Komatsu D475A-5.


Technical Specifi cations

DimensionsAll dimensions are approximate.

D11T D11T CD

mm in mm in

1 Ground Clearance 675 26.6 675 26.6

2 Track Gauge 2896 114.0 2896 114.0

3 Width without Trunnions (Standard Shoe) 3782 148.9 3806 149.8

4 Width over Trunnions 4379 172.4 4379 172.4

5 Height (FOPS Cab) 4394 173.0 4394 173.0

6 Height (Top of Stack) 4490 176.8 4490 176.8

7 Height (ROPS/Canopy) 4698 185.0 4698 185.0

8 Drawbar Height (Center of Clevis) 932 36.7 932 36.7

9 Length of Track on Ground 4444 175.0 4444 175.0

10 Overall Length Basic Tractor 6160 242.5 6160 242.5

11 Length Basic Tractor with Drawbar 6160 242.5 6160 242.5

12 Length with SU-Blade* 8579 337.8 8765 345.1

13 Length with U-Blade 8641 340.2 —

14 Length with Single-Shank Ripper 8107 319.2 8107 319.2

15 Length with Multi-Shank Ripper 8427 331.8 8427 331.8

16 Overall Length SU-Blade and SS Ripper* 10 525 414.4 10 712 421.7

* CD Blade on D11T CD.

Note: D11T shown equipped with 710 mm (28 in) shoes. D11T CD shown equipped with 915 mm (36 in) shoes.

12

3, 4

9

7 56

10, 11

12, 13

14, 15

16

8


Engine* Cat D11T Cat D11T – U.S. EPA Tier 4 Final

Komatsu D475A-5

Engine Model Cat® C32 ACERT™ Cat® C32 ACERT™ SAA12V140E-3

Flywheel Power kW (hp) (Max Fan) 634 (850) — 641 (860)

Gross Power – SAE J1995 kW (hp) 695 (932) 681 (913) —

Gross Power – ISO 14396 kW (hp) 692 (928) 677 (908) —

Net Power – SAE J1349 (Nominal Fan) kW (hp) 659 (884) — 664 (890)

Net Power – SAE J1349/ISO 9249 (Min Fan)** kW (hp) 669 (897) 663 (889) 671 (899)

Net Power – SAE J1349/ISO 9249 (Max Fan) kW (hp) 634 (850) 634 (850) 641 (860)

Net Power – EU 80/1269 kW (hp) 634 (850) 634 (850) —

Bore mm (in) 145 (5.7) 145 mm (5.7) 140 (5.51)

Stroke mm (in) 162 (6.4) 162 mm (6.4) 165 (6.5)

Displacement L (in3) 32.1 (1,959) 32.1 (1,959) 30.48 (1,860)

* Komatsu D475A-5 has a rated speed of 2,000 rpm, the Cat D11T has a rated speed of 1,800 rpm.** Based on production hydraulic fan control maps.• Cat D11T – Net power advertised is the power available at the fl ywheel when the engine is equipped with fan at max speed

(unless otherwise noted), air cleaner, muffl er, alternator, and engine emissions controls as required.• Cat D11T – No derating required up to 3658 m (12,000 ft) altitude. High altitude attachment available for greater than 3658 m (12,000 ft).

Service Refi ll Capacities Cat D11T Komatsu D475A-5

Fuel Tank L (gal) 1609 (425) 1670 (441)

Fuel Tank – high capacity L (gal) 1911 (505) —

Cooling System L (gal) 269 (71.1) 210 (55.5)

Engine Crankcase*** L (gal) 103 (27.2) 121 (32)

Power Train L (gal) 344 (90.9) 210 (55.5)

Final Drives (each) L (gal) 47 (12.4) 75 (19.8)

Roller Frames (each) L (gal) 94 (24.8) —

Pivot Shaft Compartment L (gal) 71 (18.8) —

Implement Hydraulic System Tank Only L (gal) 223 (58.9) 181.7 (48)

*** Cat with oil fi lters.




Weights Cat D11T Komatsu D475A-5

Operating Weight* kg (lb) 104 257 (229,848) 108 390 (238,960)

Shipping Weight** kg (lb) 37 485 (82,640) —

Operating Weight – CD kg (lb) 112 698 (248,456) —

Shipping Weight – CD kg (lb) 37 802 (83,340) —

* D11T Operating Weight: Includes blade tilt cylinders, coolant, lubricants, full fuel tank, ROPS, FOPS cab, 11U ABR bulldozer, single-shank ripper with pin-puller, fast fuel, 710 mm (32 in) ES shoes, and operator.

Komatsu Operating Weight: Includes strengthened full U-tilt dozer, giant ripper, steel cab, ROPS, operator, standard equipment, rated capacity of lubricant, coolant, and full fuel tank.

** D11T Shipping Weight: Base machine chassis with cab and pivot shaft. Doesn’t include ROPS, ripper, blade, track, or roller frames.

Dimensions Cat D11T Cat D11T CD Komatsu D475A-5

Ground Clearance mm (in) 675 (26.6) 675 (26.6) 655 (25.8)

Track Gauge mm (in) 2896 (114.0) 2896 (114.0) 2770 (109)

Width without Trunnions (Standard Shoe) mm (in) 3782 (148.9) 3806 (149.8) —

Width over Trunnions mm (in) 4379 (172.4) 4379 (172.4) —

Height (FOPS Cab) mm (in) 4394 (173.0) 4394 (173.0) —

Height (Top of Stack) mm (in) 4490 (176.8) 4490 (176.8) 4546 (179)

Height (ROPS/Canopy) mm (in) 4698 (185.0) 4698 (185.0) 4646 (182.9)

Drawbar Height (Center of Clevis) mm (in) 932 (36.7) 932 (36.7) —

Length of Track on Ground mm (in) 4444 (175.0) 4444 (175.0) 4524 (178.1)

Overall Length Basic Tractor mm (in) 6160 (242.5) 6160 (242.5) —

Length Basic Tractor with Drawbar mm (in) 6160 (242.5) 6160 (242.5) —

Length with SU-Blade* mm (in) 8579 (337.8) 8765 (345.1) —

Length with U-Blade mm (in) 8641 (340.2) — —

Length with Single-Shank Ripper mm (in) 8107 (319.2) 8107 (319.2) —

Length with Multi-Shank Ripper mm (in) 8427 (331.8) 8427 (331.8) —

Overall Length (SU-Blade/SS Ripper)* mm (in) 10 525 (414.4) 10 712 (421.7) 11 565 (455.3)

* CD Blade on Cat D11T CD.


Undercarriage Cat D11T Komatsu D475A-5

Shoe Type Extreme Service Extreme Service

Width of Shoe mm (in) 710 (28) 710 (28)

Width of Shoe – CD mm (in) 915 (36) —

Shoes/Side 41 41

Grouser Height mm (in) 102 (4) 105 (4.1)

Pitch mm (in) 318 (12.5) —

Ground Clearance mm (in) 675 (26.6) 655 (25.8)

Track Gauge mm (in) 2896 (114) 2770 (109)

Length of Track on Ground mm (in) 4444 (175) 4524 (178.1)

Ground Contact Area m2 (in2) 6.3 (9,765) 6.424 (9,957)

Ground Contact Area – CD m2 (in2) 8.1 (12,555) —

Track Rollers/Side 8 8

Number of Carrier Rollers 1 per side (optional) 2

• Cat D11T – Sleeve Bearing Track with Positive Pin Retention.

Track Roller Frame Cat D11T Komatsu D475A-5

Oscillation mm (in) 351 (13.8) —

Hydraulic Controls Cat D11T Cat D11T CD Komatsu D475A-5

Pump Type Gear Gear Piston

Pump Output (Implement) L/min (gal/min) 620 (164) 670 (177) 542 (143.2)

Tilt Cylinder Flow L/min (gal/min) 155 (41) 250 (66) —

Bulldozer Relief Valve Setting kPa (psi) 22 750 (3,300) — 27 500 (3,989)

Carrydozer Relief Valve Setting kPa (psi) — 24 135 (3,500) —

Tilt Cylinder Relief Valve Setting kPa (psi) 24 300 (3,525) 24 825 (3,600) 27 500 (3,989)

Ripper (Lift) Relief Valve Setting kPa (psi) 22 750 (3,300) 24 135 (3,500) 27 500 (3,989)

Ripper (Pitch) Relief Valve Setting kPa (psi) 22 750 (3,300) 24 135 (3,500) 27 500 (3,989)

• Pump output measured at 1,800 engine rpm and 6895 kPa (1,000 psi).• Electro-hydraulic pilot valves assist operations of ripper and dozer controls.• Complete system consists of pump, tank with fi lter, oil cooler, valves, lines, and control levers.

Steering and Brakes Cat D11T Komatsu D475A-5

Hydraulically applied multiple-disc steering clutches diameter mm (in)

440 (17.3) —

Spring applied multiple-disc brake diameter mm (in) 612 (24.1) —




Transmission Cat D11T Komatsu D475A-5

Type 3-speed planetary powershift 3-speed planetary powershift

1 Forward km/h (mph) 3.9 (2.4) 3.3 (2.1)

2 Forward km/h (mph) 6.8 (4.2) 6.2 (3.9)

3 Forward km/h (mph) 11.8 (7.3) 11.2 (7)

1 Reverse km/h (mph) 4.7 (2.9) 4.2 (2.6)

2 Reverse km/h (mph) 8.2 (5.1) 8.0 (5)

3 Reverse km/h (mph) 14 (8.7) 14 (8.7)

Transmission Clutch Diameter mm (in) 533 (21) —

Torque Transfer System Torque Divider Torque Converter

Blades* Cat D11T Komatsu D475A-5

Type 11SU ABR Semi-U

Blade Capacity (SAE J1265) m3 (yd3) 27.2 (35.6) 27.2 (35.6)

Blade Width (over end bits) mm (in) 5580 (219.7) 5265 (207)

Blade Height mm (in) 2753 (108.4) 2690 (105.9)

Blade Digging Depth mm (in) 766 (30.2) 1010 (39.8)

Blade Ground Clearance @ Full Lift mm (in) 1533 (60.4) 1620 (63.8)

Blade Maximum Tilt mm (in) 1184 (46.6) 1145 (45.1)*

Weight** 16 192 (35,697) —

Total Operating Weight*** (with blade and single-shank ripper) 101 626 (224,047) —

Type 11U ABR U

Blade Capacity (SAE J1265) m3 (yd3) 34.4 (45.0) 34.4 (45.0)

Blade Width (over end bits) mm (in) 6335 (249.4) 6205 (244.3)

Blade Height mm (in) 2828 (111.3) 2610 (102.8)

Blade Digging Depth mm (in) 766 (30.2) 1010 (39.8)

Blade Ground Clearance @ Full Lift mm (in) 1533 (60.4) 1620 (63.8)

Blade Maximum Tilt mm (in) 1344 (52.9) 1350 (53.1)*

Weight** 18 823 (41,498) —

Total Operating Weight*** (with blade and single-shank ripper) 104 257 (229,848) —

* Dual Tilt Measurements Used** Does not include hydraulic controls but includes blade cylinders.*** D11T includes blade and single-shank ripper, hydraulic controls, blade cylinders, coolant, lubricants, full fuel tank,

810 mm (32 in) shoes, ROPS, FOPS cab, and operator. D11T CD includes blade and single-shank ripper, hydraulic controls, blade cylinders, coolant, lubricants, full fuel tank, 915 mm (36 in) shoes, ROPS, FOPS cab, and operator.



Rippers Cat D11T* D11T CD Komatsu D475A-5

Type Single-Shank Single-Shank Variable Giant

Number of Pockets 1 — 1

Maximum Clearance Raised** mm (in) 1115 (43.9) 1115 (43.9) 1196 (47.1)

Maximum Penetration** mm (in) 1612 (63.5) 1612 (63.5) 1744 (68.7)

Maximum Penetration Force*** (shank vertical) kN (lb) 288 (64,745) 326 (73,288) —

Maximum Penetration (standard tip) mm (in) 1612 (63.5) 1612 (63.5) —

Pryout Force (multi-shank ripper with one tooth) kN (lb) 660 (148,374) 642 (144,327) —

Number of shank holes 4 4 —

Weight (without hydraulic controls)**** kg (lb) 9643 (21,259) 12 733 (28,071) 7360 (16,226)

Total operating weight† kg (lb) 104 257 (229,848) 112 698 (248,456) —

Type Multi-Shank Arrangement††

Multi-Shank Arrangement††

Multi-Shank

Number of Pockets 3 — 3

Beam Width mm (in) 3330 (131.1) 3330 (131.1) —

Maximum Clearance Raised mm (in) 1137 (44.8) 1137 (44.8) 1196 (47.1)

Maximum Penetration mm (in) 1070 (42.1) 1070 (42.1) 1124 (44.3)

Maximum Penetration Force*** (shank vertical) kN (lb) 277 (62,272) 306 (68,792) —

Maximum Penetration (standard tip) mm (in) 1070 (42.1) 1070 (42.1) —

Pryout Force (multi-shank ripper with one tooth) kN (lb) 646 (145,227) 650 (146,126) —

Number of shank holes 2 2 —

Weight (without hydraulic controls) kg (lb) 9698 (21,380) 12 025 (26,511) 9720 (21,430)

Total operating weight† kg (lb) 104 312 (229,969) 111 990 (246,896) —

* Cat D11T with 11U ABR blade and ripper.** Cat measurements are for Standard Single-Shank Ripper (Deep Ripping Arrangement is also available), Komatsu measurements

are for Variable Giant Ripper.*** Specifi cations are converted from British to metric measure and rounded.**** Komatsu includes controls and fl uids.† D11T includes blade and single-shank ripper, hydraulic controls, blade cylinders, coolant, lubricants, full fuel tank, 810 mm (32 in)

shoes, ROPS, FOPS cab, and operator. D11T CD includes blade and single-shank ripper, hydraulic controls, blade cylinders, coolant, lubricants, full fuel tank, 915 mm (36 in) shoes, ROPS, FOPS cab, and operator.

†† Includes one shank. Add 671 kg (1,479 lb) for each additional shank.Note: Single-shank, deep ripping arrangement weight includes required pin puller.


Notes


Notes

TEJB9684 (05-2012)

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Cat® D11T vs.Komatsu D475A-5