Overview
The D8T is engineered to be durable and reliable in the toughest working conditions. A Cat C15 engine provides superior performance and fuel efficiency while meeting emissions targets through ACERT Technology. The D8T is easy to operate and convenient to service to help achieve more productivity on the job site. And when service is needed, the D8T is backed by the outstanding support of the Cat dealer network.
Specifications
| Engine Model | Cat® C15 ACERT™ |
| Flywheel Power | — |
| Operating Weight | — |
Benefits & Features
Specifications
| Engine Model | Cat® C15 ACERT™ |
| Flywheel Power | — |
| Gross Power | — |
| Bore | — |
| Stroke | — |
| Displacement | — |
| Net Power - DIN 70020 | 322 PS |
| Net Power - ISO 9249 | — |
| Net Power - EU 80/1269 | — |
| Net Power - SAE J1349 | — |
| Net Power - Caterpillar | — |
| Gross Power - ISO 14396 | — |
| Emissions | U.S. EPA Tier 3/EU Stage IIIA equivalent, Brazil MAR-1 |
| Note (2) | Net power advertised is the power available at the flywheel when the engine is equipped with fan, air cleaner, muffler, and alternator. |
| Note (3) | No derating required up to 3658 m (12,000 ft) altitude, beyond 3658 m (12,000 ft) automatic derating occurs. |
| Note (1) | Engine ratings apply at 1,850 rpm. |
| Operating Weight | — |
| Shipping Weight | — |
| Note (1) | Operating Weight: Includes hydraulic controls, blade tilt cylinder, coolant, lubricants, 100% fuel, ROPS, FOPS cab, SU-Blade, Single-Shank Ripper, 610 mm (24 in) MS shoes, and operator. |
| Note (2) | Shipping Weight: Includes coolant, lubricants, 20% fuel, ROPS, FOPS cab, and 610 mm (24 in) MS shoes. |
| Overall Length - SU-Blade/SS Ripper | — |
| Length - With Multi-Shank Ripper | — |
| Track Gauge | — |
| Overall Length - Basic Tractor | — |
| Width - Without Trunnions - Standard Shoe | — |
| Height - Top of Stack | — |
| Length - With Single-Shank Ripper | — |
| Length - Basic Tractor - With Winch | — |
| Height - FOPS Cab | — |
| Length - With U-Blade | — |
| Length - Basic Tractor - With Drawbar | — |
| Width - Over Trunnions | — |
| Length - With A-Blade | — |
| Height - ROPS/Canopy | — |
| Length - With SU-Blade | — |
| Ground Clearance | — |
| Drawbar Height (Center of Clevis) | — |
| Length - Track on Ground | — |
| 1 Forward | — |
| 2 Forward | — |
| 3 Forward | — |
| 1 Reverse | — |
| 2 Reverse | — |
| 3 Reverse | — |
| 3 Forward - Drawbar Pull (1000) | — |
| 2 Forward - Drawbar Pull (1000) | — |
| 1 Forward - Drawbar Pull (1000) | — |
| Pump Type | Piston-type, Variable displacement |
| Pump Output - Steering | — |
| Pump Output - Implement | — |
| Tilt Cylinder Flow - Rod End Flow | — |
| Tilt Cylinder Flow - Head End Flow | — |
| Bulldozer Relief Valve Setting | — |
| Tilt Cylinder Relief Valve Setting | — |
| Ripper - Lift - Relief Valve Setting | — |
| Ripper - Pitch - Relief Valve Setting | — |
| Steering | — |
| Note (4) | Complete system consists of pump, tank with filter, oil cooler, valves, lines, linkage and control levers. |
| Note (3) | Electro-hydraulic pilot valve assists operations of ripper and dozer controls. Standard hydraulic systems includes four valves. |
| Note (2) | Implement Pump output measured at 1,850 rpm and 6895 kPa (1,000 psi). |
| Note (1) | Steering Pump output measured at 2,300 rpm and 30 000 kPa (4,351 psi). |
| Shoe Type | Moderate Service |
| Width - Shoe | — |
| Shoes/Side | 44 |
| Grouser Height | — |
| Pitch | — |
| Ground Clearance | — |
| Track Gauge | — |
| Length - Track on Ground | — |
| Ground Contact Area | — |
| Track Rollers/Side | 8 |
| Number of Carrier Rollers | 1 per side (optional) |
| Note | Positive Pin Retention Track. |
| Fuel Tank | — |
| Cooling System | — |
| Engine Crankcase* | — |
| Power Train | — |
| Final Drive - Each | — |
| Roller Frames - Each | — |
| Pivot Shaft Compartment | — |
| Note | *With oil filters. |
| Height | — |
| Maximum Tilt | — |
| Digging Depth | — |
| Note (1) | *Includes blade tilt cylinder. |
| Capacity - SAE J1265 | — |
| Ground Clearance | — |
| Width - Over End Bits | — |
| Total Operating Weight** - With Blade and Single-Shank Ripper | — |
| Weight* - Without Hydraulic Controls | — |
| Note (2) | **Operating Weight: Includes hydraulic controls, blade tilt cylinder, coolant, lubricants, 100% fuel, ROPS, FOPS cab, Blade, Single-Shank Ripper, 560 mm (22 in) MS shoes, and operator. |
| Maximum Tilt | — |
| Capacity | — |
| Ground Clearance | — |
| Total Operating Weight** - With Blade and Single-Shank Ripper | — |
| Weight* - Without Hydraulic Controls | — |
| Digging Depth | — |
| Width - Over End Bits | — |
| Height | — |
| Note (1) | *Includes blade tilt cylinder. |
| Note (2) | **Operating Weight: Includes hydraulic controls, blade tilt cylinder, coolant, lubricants, 100% fuel, ROPS, FOPS cab, Blade, Single-Shank Ripper, 560 mm (22 in) MS shoes, and operator. |
| Weight* - Without Hydraulic Controls | — |
| Digging Depth | — |
| Ground Clearance | — |
| Width - Over End Bits | — |
| Height | — |
| Total Operating Weight** - With Blade and Single-Shank Ripper | — |
| Maximum Tilt | — |
| Capacity - SAE J1265 | — |
| Note (1) | *Includes blade tilt cylinder. |
| Note (2) | **Operating Weight: Includes hydraulic controls, blade tilt cylinder, coolant, lubricants, 100% fuel, ROPS, FOPS cab, Blade, Single-Shank Ripper, 560 mm (22 in) MS shoes, and operator. |
| Maximum Penetration - Standard Tip | — |
| Overall Beam Width | — |
| Maximum Penetration Force - Shank Vertical | — |
| Total Operating Weight** - With SU-Blade and Ripper | — |
| Weight - One Shank - Without Hydraulic Controls | — |
| Pry-Out Force - Multi-Shank Ripper with One Tooth | — |
| Added Length | — |
| Maximum Clearance Raised - Under Tip, Pinned in Bottom Hole | — |
| Additional Shank | — |
| Number of Pockets | 3 |
| Note | **Total Operating Weight: Includes hydraulic controls, blade tilt cylinder, coolant, lubricants, 100% fuel, ROPS, FOPS cab, SU-Blade, Multi Shank Ripper, 610 mm (24 in) MS shoes, and operator. |
| Maximum Clearance Raised - Under Tip, Pinned in Bottom Hole | — |
| Total Operating Weight* - With SU-Blade and Ripper | — |
| Number of Pockets | 1 |
| Note | *Total Operating Weight: Includes hydraulic controls, blade tilt cylinder, coolant, lubricants, 100% fuel, ROPS, FOPS cab, SU-Blade, Ripper, 610 mm (24 in) MS shoes, and operator. |
| Pry-Out Force | — |
| Maximum Penetration - Standard Tip | — |
| Added Length | — |
| Maximum Penetration Force - Shank Vertical | — |
| Weight - Without Hydraulic Controls | — |
| Weight* | — |
| Note (1) | Variable speed, hydraulically driven, dual braking system, three roller fairlead. |
| Oil Capacity | — |
| Increased Tractor Length | — |
| Winch Case - Width | — |
| Flange Diameter | — |
| Drum Width | — |
| Note (2) | *Weight: Includes pump and operator controls. |
| ROPS | ROPS (Rollover Protective Structure) offered by Caterpillar for the machine meets ROPS criteria ISO 3471:2008. |
| FOPS | FOPS (Falling Object Protective Structure) meets ISO 3449:2005 Level II. |
| Note (1) | Operator sound exposure Leq (equivalent sound pressure level) measured according to the work cycle procedures specified in ANSI/SAE J1166 OCT98 is 80 dB(A), for cab offered by Caterpillar, when properly installed and maintained and tested with the doors and windows closed. |
| Note (3) | The exterior sound pressure level for the standard machine measured at a distance of 15 m (16.4 yd) according to the test procedures specified in SAE J88 APR95, mid-gear-moving operation, is 84 dB(A). |
| Note (2) | Hearing protection may be needed when operating with an open operator station and cab (when not properly maintained or doors/windows open) for extended periods or in noisy environment. |
Benefits & Features
C15 Engine with ACERT Technology
Cat C15 Engine
Performing at full-rated net power of 231 kW (310 hp) at 1,850 rpm, the large displacement and high torque rise allow the D8T to handle tough material. Matched to the high-efficiency torque divider and electronically controlled power shift transmission, it will provide years of dependable service. The C15 engine with ACERT Technology meets U.S. EPA Tier 3, EU Stage IIIA equivalent and Brazil MAR-1 emission standards.
ADEM™ A4 Engine Controller
Manages fuel delivery for optimal performance per liter (gallon) of fuel used. Provides flexible fuel mapping, allowing the engine to respond quickly to application needs. Monitors conditions and keeps engine operating at peak efficiency.
Fuel Delivery
The C15 ACERT engine features a mechanically actuated electronic unit injection system (MEUI™) that excels in its ability to control injection pressure over the entire engine operating speed range. By optimizing the combustion cycle, the system contributes to reduced emissions and greater fuel efficiency.
ATAAC and Airflow
Air-to-air aftercooling keeps air intake temperatures down and, in concert with the tight tolerance combustion chamber components, maximizes fuel efficiency and minimizes emissions. Significant improvements in air flow are generated by a water-cooled turbocharger, unique cross-flow head and single overhead cam. The system provides high horsepower, with faster response time, while keeping intake temperatures low for long hours of continuous operation.
Service
Engine monitoring systems simplify maintenance and repair. Cat dealers have easy electronic diagnostic access using the Cat Electronic Technician tool.
Operator Station
Comfortable Operation
A comfortable operator is more focused, improving productivity and job site safety. The D8T offers a standard isolation-mounted cab to reduce noise and vibration, as well as more glass area for better visibility.
1) Steering Control
A single tiller bar controls direction and degree of turns, forward-reverse shifting and gear selection for ease of operation and operator comfort.
2) Cat Comfort Series Seat
Adjustable and designed for comfort and support.
3) Adjustable Armrests
Standard adjustable armrests provide additional operator comfort.
4) Electronic Ripper Control
Rigid mounting and finger tip controls provide firm support and positive control for tough conditions.
5) Electronic, Programmable Dozer Control
Features like blade response and blade float can be set using the Advisor panel.
6) Cat Monitoring Display System
Key machine operating information gives insight into machine operation and maintenance needs.
Implement and Steering Controls
Dozer Control Lever
- A low-effort electronic dozer control handle gives the operator control of all dozer functions with one hand. Fore/aft movement of the lever lowers and raises the blade. Left/right movement directionally tilts the blade. The thumb lever at the top of the handle controls blade pitch fore and aft. Additional functions, like optional Dual Tilt, Automated Blade Assist and Auto Pitch are also controlled by buttons on the dozer control handle.
- Dual Tilt – Optional Dual Tilt improves load control and allows the operator to optimize the blade pitch angle for better balance and productivity.
- Automated Blade Assist (ABA) – Automated Blade Assist is a semi-automatic dozer control function that increases operator efficiency by automating some of the more common blade functions. The ABA system for a dual-tilt tractor includes Auto Pitch.
- Auto Pitch – This function allows the operator to preset blade pitch angles for optimal performance during the dozing cycle: one setting each for load, carry, spread and return.
Ripper Control
A rigidly mounted handgrip provides firm support for the operator even when ripping in the roughest terrain. The low effort thumb lever controls raising and lowering. The finger lever controls shank-in and shank-out positioning. The thumb button automatically raises the ripper. An Auto Stow button can be configured to not only raise the ripper, but shank in or out if desired.
Tiller Control System
A single lever, dual-control tiller controls machine speed, direction, and steering. The tiller allows the operator to work precisely in close areas, around structures, grade stakes, other machines and during fine grading work.
Drive Train
Drawbar Pull vs. Speed
As loads on the tractor increase, the D8T offers unmatched lugging capability and smooth shifting as the need occurs to change gears under varying loads. Drive train offers excellent runout speeds and accurate steering capability under load.
Torque Divider
A high efficiency torque divider with freewheel stator provides high torque multiplication while shielding the drive train from sudden torque shocks and vibration.
Differential Steering System
- A planetary differential turns the machine by speeding up one track and slowing the other, while maintaining full power to both. The system consists of:
- Two planetary gear sets (steering and drive) make up the “dual differential,” which performs the traditional drive function (forward or reverse). Unlike competitive machines, the differential also performs a steering function with input from the steering motor.
- A third “equalizing planetary” gear set resides in the transmission case. It is connected to the dual differential, which provides a maximum speed difference between the right and left final drives during a turn.
- A dedicated variable-displacement hydraulic pump.
- A bi-directional, fixed-displacement steering motor.
Planetary Power Shift Transmission
- Three speeds forward and three speeds reverse, utilizing large diameter, high capacity, oil-cooled clutches.
- Modulation system permits fast speed and direction changes.
- Modular transmission and differential slide into rear case for servicing ease, even with ripper installed.
- Oil-to-water cooler for maximum cooling capacity.
- Forced oil flow lubricates and cools clutch packs to provide maximum clutch life.
Elevated Final Drives
- Isolated from ground and equipment induced impact loads for extended power train life.
- Crown-shaved drive gears provide smooth, quiet, low maintenance operation.
- Splash lubrication and Duo-Cone® Seals extend service life.
Undercarriage
Standard Undercarriage
Standard Undercarriage with Positive Pin Retention (PPR) track is the standard factory undercarriage. It is recommended for high impact, waste and heavy packing applications. PPR track features the exclusive Cat design that locks the link to the pin for better track joint life. All Cat undercarriage components are designed for balanced wear life in a variety of applications.
SystemOne™ Undercarriage
Optional SystemOne undercarriage can help reduce total undercarriage owning and operating costs in high bushing wear applications. SystemOne track features lifetime sealed and lubricated cartridges with rotating bushings. This eliminates bushing turns, and sprocket segment wear is matched to the life of the chain. All SystemOne undercarriage components are designed to work and wear as a system.
Track Shoes
Choose Moderate Service, Extreme Service or Super Extreme Service track shoes to help optimize the machine based its most frequent applications. The proper track shoes help reduce impact and wear for optimal undercarriage life – especially in high impact or highly abrasive conditions.
Work Tools
Bulldozers
Blades are made of high tensile strength steel to stand up to the most severe applications. Heavy moldboard construction and bolt-on cutting edges and end bits add strength and durability. Specialized blades are also available for coal and woodchip stockpile applications.
Rippers
Single and multi-shank rippers are made to penetrate tough material fast and rip thoroughly for use in a variety of materials.
Single-Shank Ripper
Operator can adjust the shank depth from the seat using an optional single shank pin puller. Heat-treated spacer bars in the ripper carriage extend pocket life and reduce shank notching. Large one-piece shank is available in deep rip configuration.
Multi-Shank Ripper
Tailors the tractor to the material by using one, two or three shanks.
Rear Counterweights
Provide proper tractor balance to maximize dozing production. Recommended if not equipped with any other rear attachment.
Winches
For options contact your Cat dealer.
Integrated Electronic Solutions
Grade Control Ready Standard
Grade Control systems can dramatically improve machine productivity, efficiency and material utilization, as well as reduce survey and total operating costs. The D8T comes from the factory Grade Control Ready, complete with core system components, wiring and mounting points. System installation is quick and easy, using a factory kit or field retrofit. Grade Control Ready supports both blade-mounted dual GPS and cab-mounted single GPS receiver systems. Both utilize global positioning satellites for blade or track positioning information, along with on-board electronic site plans for precise grade and slope control.
Blade Mounted Dual GPS
The blade-mounted design of AccuGrade™ Dual GPS systems gives accurate positioning information of the blade cutting edge. On-board electronic site plans compare blade position relative to the design plan. Operators can choose between indicate-only manual control or automatic control.
Cab-Mounted Single GPS
AccuGrade Cab-Mounted Single GPS systems compare track position relative to the design plan. The operator receives correction information to control the blade manually. This system is better suited for bulk earthworks or course/rough grading. The Computer Aided Earthmoving System directs operators where to cut and fill in real-time.
Cat Product Link™*
Cat Product Link allows remote monitoring of equipment to improve overall fleet-management effectiveness. Product Link is deeply integrated into machine systems. Events and diagnostic codes, as well as hours, fuel, idle time and other detailed information are transmitted to a secure web based application, VisionLink®. VisionLink includes powerful tools to convey information to users and dealers, including mapping, working and idle time, fuel level and more.
Structures
Second Life
Major structures and components are built to be rebuilt, reducing waste and replacement costs.
Data not available.
Standard Equipment
- POWER TRAIN
- C15 ACERT diesel engine with EUI (Electronic Unit Injection)
- 24-volt electric start
- Advanced modular cooling system
- Aftercooler, air-to-air (ATAAC)
- Air filter, with electronic service indicator
- Coolant, extended life
- Fan, suction, hydraulically driven
- Fast Fuel System
- Fuel priming pump, electric
- Muffler
- Parking brake, electronic
- Pre-cleaner, stratta-tube dust ejector
- Prescreener
- Shift management: – Automatic directional and downshift – Controlled-throttle, load-compensated
- Starting aid, automatic ether
- Torque divider
- Transmission control module, electronic
- Transmission, electronically-controlled: – Powershift, 3F/3R speed
- Four planet, double-reduction: – Planetary final drives
- Transmission control module, electronic
- Turbocharger, wastegate
- Water separator
- Slow Fuel System
- UNDERCARRIAGE
- Rollers and idlers, lifetime lubricated
- Sprocket rim segments, replaceable
- Suspension-type undercarriage, 8-roller tubular track roller frame (Carrier roller ready)
- Track adjusters, hydraulic
- Track guides: – 610 mm (24 in) PPR moderate service grouser with sealed and lubricated track (44 section)
- Two-piece master link
- HYDRAULICS
- Hydraulics, independent steering and work tool pumps
- Hydraulics, electronically controlled, load-sensing dozer lift and tilt
- STARTERS, BATTERIES AND ALTERNATORS
- Alternator, 150 amp
- Batteries, heavy duty
- Starting receptacle, auxiliary
- ELECTRICAL
- Alarm, back-up
- Converter, 24V to 12V
- Diagnostic connector
- Horn, forward warning
- OPERATOR ENVIRONMENT
- Armrest, adjustable
- Advisor operator interface: – Electronic monitoring system – Diagnostic service information – Operator preferences
- Cab, ROPS, FOPS, sound suppressed
- Deactivation switch, hydraulic controls
- Decelerator pedal
- Governor switch, electronic
- Heater and ventilation
- Mirror, rearview
- Radio-ready
- Seat, cloth, air suspension
- Seatbelt, retractable
- Steering control, twist tiller with touch shift
- Wipers, intermittent
- OTHER STANDARD EQUIPMENT
- CD ROM Parts Book
- Ecology drain – Engine oil, coolant, hydraulic oil, torque converter, fuel tank, power train case and transmission
- Engine enclosures
- Equalizer bar, pinned
- Front pull device
- Guards, bottom hinged
- Grade control ready
- Heater, engine coolant
- Radiator, hinged fan blast deflector
- HVAC box – corrosive resistant
- Mounting, Lift Cylinders
- Oil cooler, hydraulic
- Product Link ready
- S•O•S sampling ports
- Steering, electronically-controlled power differential
- Vandalism protection for fluid compartments
Optional Equipment
- ELECTRICAL
- Light, ripper
- Lights, supplemental: – 6 Halogen – 8 HID high-mount for waste application – 10 Halogen – 10 Halogen high-mount for waste application – Warning, strobe
- Switch, disconnect, remote mounted
- WAVS single rear vision camera
- AccuGrade ARO
- CAES ARO
- GUARDS
- Fan, debris
- Final drive and seals
- Fuel tank
- Idler seals
- Pivot shaft seal
- Radiator, heavy-duty, hinged
- Rear tractor
- Screen, rear
- Sweeps
- Track roller
- Transmission
- Undercarriage
- UNDERCARRIAGE
- Undercarriage PPR
- Non-suspended
- Tracks, Pair, Sealed and Lubricated (Standard arrangement): – 607 mm (24 in) Extreme and Moderate Service – 660 mm (26 in) Extreme and Moderate Service – 711 mm (28 in) Extreme and Moderate Service
- Undercarriage SystemOne™: – 610 mm (24 in) Extreme and Super Extreme Service – 660 mm (26 in) Extreme and Super Extreme Service – 711 mm (28 in) Extreme and Super Extreme Service
- Roller Options: – Carrier rollers (one per side) – Seals, arctic idler/roller
- Keith's POWER TRAIN TEST
- 1.21 gigawatz
- POWER TRAIN
- Fan, reversible
- Pre-cleaner, turbine
- Prelube, engine, automatic
- Quick oil change system
- Radiator, high ambient
- OPERATOR ENVIRONMENT
- Air conditioner, under-hood mounted
- Air conditioner, fender mounted
- Air conditioner, ROPS mounted
- Canopy
- Enhanced cab
- Glass, Ultra-strength up to 275 kPa (40 psi)
- Operators Arrangement (gives additional comfort for smaller operators)
- Seat, vinyl
- SPECIAL ARRANGEMENTS
- Hydraulic implement towing arrangement, Low Ground Pressure arrangement, Waste Handling arrangement and Woodchip arrangement, in addition to other optional attachments are available from the factory. Contact your dealer for availability.
- BULLDOZER ATTACHMENTS
- AccuGrade GPS attachment ready installation (provides hydraulics, electrical, and blade mount for system)
- Dual tilt cylinders
- 8SU Blade, with rock guard and wear plate
- 8SU Blade, with push plate
- 8U Blade, with rock guard
- Trunnion cover, (replaces trunnions)
- RIPPERS
- Single-Shank (A rear attachment and/or counterweight is recommended for improved performance and balance.) – Standard depth
- Single-Shank (A rear attachment and/or counterweight is recommended for improved performance and balance.) – Deep ripping
- Multi-Shank (A rear attachment and/or counterweight is recommended for improved performance and balance.) (includes one tooth)
- Ripper attachments: – Additional tooth (for multi-shank ripper) – Pin Puller, hydraulic
- OTHER ATTACHMENTS
- Counterweights (A rear attachment and/or counterweight is recommended for improved performance and balance.): – Front mounted – Rear mounted
- Drawbar, rigid
- Parts book, paper
- Starting aids
- Striker bars, front and rear
- Winch (A rear attachment and/or counterweight is recommended for improved performance and balance.) (A rear screen is recommended for operator protection when fitted with winch option.)
Related Products
Landfill U-Blades
Designed as a versatile performer. A multi-purpose powerhouse, able to doze refuse, dig and move cover materials.
| Model | Width | ||
|---|---|---|---|
| 262-7671 | — | — | — |