Engine
Engine Model Cat®C15 ACERT
Gross Power 259 kW 347 hp
Flywheel Power 231 kW 310 hp
Weights
Operating Weight 38 488 kg 84,850 lb
Shipping Weight 29 553 kg 65,152 lb
• Operating Weight: Includes hydraulic controls, blade tilt
cylinder, coolant, lubricants, 100% fuel, ROPS, FOPS cab,
SU-Blade, Single-Shank Ripper, 560 mm (22 in) MS shoes,
and operator.
• Shipping Weight: Includes coolant, lubricants, 20% fuel,
ROPS, FOPS cab, and 560 mm (22 in) MS shoes.
D8T
Track-Type Tractor
®
®
2
D8T Track-Type Tractor
Strength from the past. Power for the future.™ The D8T combines power and efficiency with
advanced technology for outstanding production at a lower cost-per-yard.
Engineered for demanding work.
The durable construction of the D8T is
well suited for tough working conditions.
Combined with the C15 engine for superior
performance, fuel economy and meeting
emission targets with the help of ACERT
Technology, it keeps material moving with
the reliability and low operating costs you
expect from Cat tractors.
Work Tools
Various bulldozer blades, rippers,
winches, and other options allow you
to adapt the D8T to match your specific
application, making you more productive.
pg. 14
Integrated Electronic Solutions
Caterpillar offers technology options
such as Product Link and AccuGrade
®
Grade Control System that provide
greater accuracy, higher productivity,
lower operating costs and more
profitability. pg. 12
Implement and Steering Controls
Electro-hydraulic implement controls
allow low operator effort for dozing and
ripping. Steering and gear selection in a
one-hand control system enhances
operator comfort. pg. 8
✔
Operator Station
Designed for operator comfort,
convenience, and productivity.
Machine control and vital information
is provided at the operator’s fingertips.
A full day of work is no problem in this
efficient work place. pg. 6
✔
C15 Engine with ACERT®Technology
ACERT Technology works at the point
of combustion to optimize engine
performance and provide low exhaust
emissions. Matched with the torque
divider and power shift transmission,
it provides years of dependable and
efficient service. pg. 4
✔
✔ New Feature
3
Serviceability and Customer Support
Combining easy to access, modular
components with your Caterpillar
®
Dealer’s advanced rebuild and repair
capabilities ensures rapid component
replacement and minimum downtime.
pg. 15
✔
Structure
Mainframe is heavy, strong and durable.
Full box sections, steel castings and
continuous rolled rails provide durable
support to the suspended undercarriage,
elevated final drives and other integral
frame components. pg. 11
✔
Undercarriage
The proven elevated sprocket
undercarriage isolates the drive train
components from ground-induced
impacts. The suspended undercarriage
puts more track on the ground for
higher traction and less track slip.
It absorbs shocks for a smoother ride
and longer machine life. pg. 10
Drive Train
The electronically controlled power
shift transmission, efficient differential
steering and durable planetary final
drives deliver outstanding power
transfer and long life to ensure
maximum productivity. pg. 9
C15. 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 doze through tough
material. Matched to the high-efficiency
torque divider and electronically
controlled power shift transmission,
it will provide years of dependable service.
Constant Net Horsepower. Constant
net horsepower allows the operator to
maintain high standards of performance
and response, even when parasitic loads,
such as the on-demand cooling fan,
are applied. The engine automatically
adjusts to maintain power output and
conversely lowers output when demands
are low. This converts to a fuel savings
in cooler climates.
C15 Block. The one-piece, grey iron
block features generous ribbing for
stiffness and heavy bearing bulkheads
for rigidity and strength. Incorporation
of straight o-ring connection points
reduces the loss of engine oil and fluids.
ADEM™ A4 Engine Controller.
The ADEM A4 electronic control
module manages fuel delivery to get
the best performance per gallon (liter)
of fuel used. It provides flexible fuel
mapping, allowing the engine to respond
quickly to varying application needs.
It tracks engine and machine conditions
while keeping the engine operating at
peak efficiency.
Fuel Delivery. Multiple injection
fuel delivery involves a high degree
of precision. Precisely shaping the
combustion cycle lowers combustion
chamber temperatures generating
fewer emissions and optimizing fuel
combustion; translating into more work
output for your fuel cost.
4
A combination of innovations working at the point of combustion, ACERT Technology
optimizes engine performance while meeting EPA Tier 3 and EU Stage IIIa engine exhaust
emission regulations for off-road applications.
C15 Engine with ACERT®Technology
MEUI Fuel System. A highly evolved
fuel system with a proven record of
reliability in the field. MEUI combines
the technical advancement of an electronic
control system with the simplicity of
direct mechanically controlled unit fuel
injection. The MEUI system excels in
its ability to control injection pressure
over the entire engine operating speed
range. These features allow the C15 to
have complete control over injection
timing, duration, and pressure.
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.
Turbocharging and Air-to-Air
Aftercooling. Provides high horsepower
with faster response time while keeping
intake temperatures low for long hours
of continuous operation.
Service. Easier maintenance and repair
through monitoring key functions and
logging critical indicators. Electronic
diagnostic access is possible with a
single tool, the Cat Electronic Technician.
5
6
Designed for operator comfort, convenience, and productivity, the state-of-the-art cab sets
a new standard.
Operator Station
8
7
6
6
1
5
3
2
4
1) Steering Control. Dual-twist tiller
control with standard differential steering
controls direction and degree of turns,
forward-reverse shifting, and gear
selection in a single control handle—
enhancing operator comfort.
2) Cat Comfort Series Seat.
Fully adjustable and designed for
comfort and support. Thick seat and
back cushions provide support for the
lower back and thighs, while allowing
unrestricted arm and leg movement.
Wide retractable seat belt provides
positive and comfortable restraint.
3) Adjustable Armrests. Standard
adjustable armrests provide additional
comfort for the operator.
4) Electronic Ripper Control. A rigidly
mounted handgrip, with low effort
thumb and finger controls, provides
firm support and positive control of
the ripper when operating in tough
conditions. Programmable features,
such as Auto Lift, Shank-Out and
Auto Stow, increase efficiency for
the operator.
5) Electronic, Programmable Dozer
Control. Features such as blade response,
blade float, auto blade pitch, and spread
rate can be set and adjusted using the
Advisor panel. Auto Blade Assist and
AutoCarry options make the tractor even
more efficient in specific applications.
6) Cat Monitoring Display System.
The combination dash mounted
instrument cluster and the Advisor
Monitoring System provide key machine
operating information and give the
operator and service technician insight
into the machine’s operation and
maintenance needs.
In-Dash Instrument Cluster.
The instrument panel, with easy to
read gauges and warning lamps, keeps
the operator aware of any potential
problems. All gauges and readouts
are easily visible in direct sunlight.
Advisor Monitoring System (AMS).
On-board diagnostic abilities minimize
downtime and maximize machine
performance.
7) Wide Panoramic View. The operator
station offers an exceptional viewing
area. A large view hole in the singleshank ripper frame provides a view of
the ripper tip. The tapered hood, notched
fuel tank and narrow single-shank ripper
carriage give the operator a clear line
of sight to the front and rear work areas.
The large single-pane door windows
provide an excellent view to the sides
and blade.
8) Heating and Air Conditioning.
Conveniently located air circulation
vents evenly distribute airflow within
the cab. Controls are easily accessible
from the operator seat.
Fuse Panel and Diagnostic Access.
The new 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, an antenna and a
radio mount recessed in the headliner.
7
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. When equipped with the
optional Dual Tilt feature, the thumb
lever at the top of the handle controls
blade pitch fore and aft. The trigger
switch toggles between single and
dual tilt.
The left and right side thumb buttons
provide control over the semi-automated
blade pitch functions, that the Dual Tilt
attachment provides. Blade pitch for
load, carry and spread segments can
be preset on Advisor and controlled by
the buttons. The left side button cycles
between the pitch settings for each
segment of the push cycle. The right
side button cancels out of the pitch
functions without loosing the preset
pitch angles. This Auto Blade Assist
(ABA) feature is turned on and off
using a switch on the right side console.
The two buttons also provide control
over the AccuGrade™ blade control
attachment when the machine is
so equipped. The buttons turn on
AccuGrade, provide manual increment
and decrement control, and turn off
AccuGrade.
Auto Pitch. Presetting blade pitch angles
for optimal performance during the
dozing cycle: one setting each for load,
carry, spread and return. Auto Pitch is
activated on the Advisor keypad; the
operator can select the dozing segment
by pushing the yellow button on the left
side of the dozer handle.
AccuGrade
®
Ready Option (ARO).
The AccuGrade Ready Option (ARO)
provides a factory installed on-board
platform for the AccuGrade GPS
installation. All of the changes required
to the electrical system, hydraulic
system, blade, and cab are incorporated
into the ARO. Mounting brackets added
on the blade allow easy installation of
the masts. Console mounting in the cab
secure the in-cab display. Plug-in points
inside the cab and on the front of the
machine make it easy to install
electronic components.
Computer Aided Earthmoving System
(CAES) (optional). This on-board
electronic site plan directs machine
operators, in real-time, where to cut and
fill. A graphical map of the design plan
and a view of the machine’s horizontal
and vertical position simplify operation
and enhance production. This advanced
information tool combines GPS
technology (centimeter-level) and in-cab
computing capabilities for precise grade
and slope control. It has proven to
provide measurable impact on work
quality and overall productivity.
Ripper Control Lever. 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.
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.
8
Implement and Steering Controls
Low effort control functions significantly reduce operator fatigue for increased performance.
Torque Divider. A high efficiency torque
divider with fixed 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:
• Three planetary gear sets:
• 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 planetary gear set, the
“equalizing planetary,” resides
inside 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.
• Heavy-duty steering drive gears.
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.
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.
The 3-speed forward, 3-speed reverse
transmission, backed by differential
steering, offers excellent runout speeds
and accurate steering capability
under load.
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.
h
h
9
Drive Train
The drive train provides maximum efficiency in combination with the C15 engine with
ACERT Technology.
Power Shift with Differential Steer
lbs x
N x
1000
1000
140
600
120
1F
100
80
60
40
20
0
01234567
024 6810
2F
3F
Speed
500
400
300
Drawbar Pull
200
100
0
mp
km/
Suspended Undercarriage Design.
Suspended undercarriage design absorbs
impact loads to reduce the shock loads
transferred to the undercarriage by up
to 50 percent in uneven terrain.
Bogie Suspension. Bogie suspension
conforms closely to the ground providing
up to 15 percent more ground contact,
especially in hard, uneven terrain.
Higher traction means less slippage,
better balance, and a smoother ride.
Integrated Carrier Roller Mount.
The carrier roller mount is cast into
the track roller frame making it easier
to add the optional carrier roller in the
field, if conditions require it.
Rollers and Idlers. Feature symmetric
Duo-Cone seals for long sealing life to
prevent oil loss and dirt entry. Toric rings
maintain performance over a wide range
of temperatures. Rollers and idlers are
serviceable and rebuildable to provide
value. Abutment-style caps securely
attach rollers and idlers to the bogies.
Roller Frames. Roller frames are tubular
to resist bending and twisting, with
added reinforcement where operating
loads are highest.
• Roller frames attach to tractor by a
pivot shaft and pinned equalizer bar.
• Large pivot shaft bushings operate
in an oil reservoir.
• A low friction, no maintenance
bushing is used in the saddle
connection.
• Aligned to use more of the available
wear material, running the track to
the outside of the rollers in forward
and to the inside in reverse.
Sprocket Segments. Made exclusively
of Caterpillar Tough Steel™ for longer
wear life and precision machined after
heat treat for proper fit. Segments can
be removed or replaced without
breaking the track.
Positive Pin Retention (PPR) Sealed
and Lubricated Track. Designed for
high-impact and high load applications.
The PPR exclusive Caterpillar design
locks the link to the pin.
Track Shoes. Track shoes come in a
variety of sizes and styles to best match
the working conditions.
10
Undercarriage
The Caterpillar elevated sprocket undercarriage is designed for optimized machine balance
and best possible performance and component life.
Mainframe Strength. The D8T mainframe
is built to absorb high impact shock
loads and twisting forces.
Frame Rails. Full box section, designed
to keep components rigidly aligned.
Heavy Steel Castings. Adds strength
to the main case, equalizer bar saddle,
front cross member and tag-link trunnion.
Top and Bottom Rails. Continuous rolled
sections, with no machining or welding,
to provide superior mainframe durability.
Main Case. Elevates the final drives
well above the ground level work area
to protect them from impact loads,
abrasion and contaminants.
Pivot Shaft. The D8T pivot shaft runs
through the mainframe and connects to
the roller frames, allowing independent
oscillation. The full-length pivot shaft
distributes impact loads throughout
the case, reducing the bending stress
on the case.
Equalizer Bar. The equalizer bar features
limited slip seals and an oil-lubricated
joint for better oil flow. Large forged
pads reduce wear on the mainframe
and extend sealed joint life.
Tag-Link. The Tag-Link brings the blade
closer to the machine for more precise
dozing and load control.
The Tag-Link design provides solid
lateral stability and better cylinder
positions for constant break out force,
independent of blade height.
11
Structure
Engineered to provide durability and the solid support necessary for maximum production
and service life in the most demanding work.
AccuGrade®System for Track-Type
Tractors. Caterpillar is helping customers
revolutionize the way they move
material with new technology solutions
for earthmoving machines – solutions
that provide greater accuracy, higher
productivity, lower operating costs and
more profitability.
The AccuGrade System is designed and
integrated into the machine and hydraulic
systems to create an automated blade
control system that allows operators
to grade with increased accuracy.
The system uses machine-mounted
sensors to calculate precise blade slope
and elevation information.
The integrated electrohydraulic valve
control module uses the information
received from the sensors to
automatically adjust the blade
to maintain grade.
Automated blade control allows
operators to improve efficiency and
productivity by achieving grade faster
and in fewer passes than ever before,
reducing the need for traditional survey
stakes or grade checkers.
AccuGrade Ready Option. The factory
ready option machine makes system
installation and setup quick and easy,
and optimizes performance and
reliability.
• Hydraulic control systems are
integrated into the machine
hydraulics for maximum
performance and dependability.
• AccuGrade controls are integrated
into the machine controls and
levers for reliable operation and
precise control.
• Wiring harnesses and cables
are routed during assembly for
improved wear protection and
better reliability.
• System is designed to withstand
vibration for long life in rugged
working environments.
• Safety interlock feature is built
in for added protection during
automated operation.
12
Caterpillar technology offers customers new opportunities for efficiency and profitability.
Integrated Electronic Solutions
AccuGrade GPS. AccuGrade GPS
computes the positioning information
on the machine, compares the position
of the blade relative to the design plan
and delivers that information to the
operator via an in-cab display.
Information, such as blade elevation,
necessary cut/fill to achieve grade, visual
indication of the blade’s position on the
design surface and a graphical view of
the design plan with machine location.
AccuGrade GPS puts all the information
the operator needs to complete the job
in the cab, resulting in a greater level of
control. Vertical and horizontal guidance
tools visually guide the operator to the
desired grade.
Automated features allow the hydraulic
system to automatically control blade
adjustments to move the blade to grade.
The operator simply uses the light bars
to guide the machine for consistent,
accurate grades and slopes, resulting in
higher productivity with less fatigue.
Increases Productivity and Efficiency.
• Increases productivity by up to 50%
• Reduces guesswork and costly rework
by moving dirt right the first time
• Reduces survey costs up to 90%
• Improves material utilization
• Reduces operating costs
• Extends the work day
Enhances Worksite Safety.
• Reduces the need for ground
personnel (survey stakers and
checkers) on the worksite, in the
vicinity of working equipment.
Assists with Labor Shortage.
• Reduces labor requirements and costs
• Customers can get the job done
more quickly and efficiently
• Reduces need for staking and grade
checkers
• Empowers operator, and improves
operator confidence by delivering
grading information to the cab
Improves Employee Satisfaction
and Retention.
• In-cab display brings elevation
control to the cab
• Empowers operator with real-time
results
• Real-time feedback on progress
increases job satisfaction, eliminates
guesswork and reduces operator stress
• Improves operator skills and takes
performance to the next level
• Investing in the latest technology
leads to a sense of value and trust
by the operator
Computer Aided Earthmoving System
(CAES) (optional). This on-board
electronic site plan directs machine
operators, in real-time, where to cut and
fill. A graphical map of the design plan
and a view of the machine’s horizontal
and vertical position simplify operation
and enhance production. This advanced
information tool combines GPS
technology (centimeter-level) and
in-cab computing capabilities for
precise grade and slope control. It has
proven to provide measurable impact on
work quality and overall productivity.
The D8T can be ordered with a CAESready option that provides necessary
wiring and mounts for the CAES system.
Cat®Product Link. When machines are
operating at several different job sites,
it becomes more difficult to keep current
and accurate records. That can lead to
missed maintenance, poor use of assets
and wasted time. Product Link provides
two-way information flow between
machine on-board systems and your
desktop computer through Dealer
Store Front and Equipment Manager.
Cat Product Link enables the use of
Equipment Manager to keep you in
touch with your machines.
Benefits.
• Provides machine location
• Provides machine health information
• Eliminates trips for service meter
hour readings
• Monitors fuel level and consumption
• Identifies unauthorized machine use
• Facilitates efficient maintenance
scheduling
• Can be retrofitted on Cat and other
brands of machines
13
Bulldozers. All blades feature a strong
box-section design that resists twisting
and cracking. Blades are made of
Cat DH-2™ steel that has high tensile
strength and stands up to the most
severe applications. Heavy moldboard
construction and hardened bolt-on
cutting edges and end bits add strength
and durability.
• Semi-Universal Blade. The Semi-
Universal blade is built for tough
applications where penetration is more
important than capacity. The “SU” blade
is more aggressive in penetrating and
loading material than the “U” blade.
The blade wings are designed for superior
load retention and penetration in tightly
packed materials and for finishing
applications. Can also be configured with
a push plate for push loading scrapers.
• High-Capacity Universal Blade.
The high-capacity Universal blade offers
maximum capacity and is perfect for
moving big loads over long distances.
The “U” blade has large blade wings and
is ideal for stockpile work, reclamation,
charging hoppers or trapping for loaders.
Optional Dual Tilt. Improves load control
and allows the operator to optimize the
blade pitch angle for each portion of the
dozing cycle.
Single Lever. Controls all blade
movements, including the optional
dual tilt.
Cutting Edges and End Bits. Cutting edges
are DH-2 steel. End bits are DH-3™
steel to provide maximum service life
in tough materials.
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.
Large upper frame view hole improves
ripper tip visibility. 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.
Hydraulics. The D8T features field-proven
load-sensing hydraulics which respond to
operating requirements by automatically
and continually adjusting attachment
hydraulic power, increasing both
operator and machine efficiency.
Rear Counterweights. Provide proper
tractor balance to maximize dozing
production. Recommended if not
equipped with any other rear attachment.
Winches. Several options are available.
Contact your Caterpillar Dealer.
14
Work Tools
Work Tools and Ground Engaging Tools (G.E.T.) provide the flexibility to match the machine
to the job, maximizing performance.
Serviceability. Minimizes maintenance
and repair downtime. New sight gauges,
filter locations, improved access to oil
and coolant sampling ports, and an
engine compartment mounted work
lamp, make daily and periodic service
faster and easier. Equipped with a dozer
and ripper, there are only 18 lube points.
Engine Oil Filter. Engine oil filter is
located on the engine for easy servicing
access and minimal downtime.
Save further time with the optional
quick oil change attachments.
Water Separator and Fuel Filter.
Easily located just inside the engine
access panel, the water separator
functions as the primary fuel filter,
just ahead of the secondary fuel filter.
Quick Disconnect Fittings. Allow for fast
diagnosis of the power train, hydraulics
and attachment oil systems.
S•O•SSMAnalysis. Scheduled Oil
Sampling made easier through live
sampling ports for the engine oil,
hydraulics and coolant.
Caterpillar Product Link PL300 (optional).
This option allows the customer or
dealer to obtain machine diagnostics
and location information from their
offices. Product Link PL300 provides
updates on service meter hours, machine
condition and machine location, as well
as integrated mapping/route planning.
Built-in flexibility allows for future
technology development.
Machine Selection. Make detailed
comparisons of the machines you are
considering before you buy. How long
do components last? What is the cost
of preventive maintenance? What is the
true cost of lost production? Your Cat
Dealer can give you answers to these
very important questions.
Purchase. Consider the financing options
available, as well as day-to-day operating
costs. This is also the time to look at
dealer services that can be included in
the cost of the machine to yield lower
equipment owning and operating costs
over the long run.
Product Support. Plan for effective
maintenance before buying equipment.
Choose from your dealer’s wide range
of maintenance services at the time you
purchase your machine. Programs such
as Custom Track Service (CTS),
S•O•S analysis, Technical Analysis
and guaranteed maintenance contracts
give peak life and performance to
your machine.
Parts Program. You will find nearly
all parts at your dealer parts counter.
Cat Dealers use a worldwide computer
network to find in-stock parts to minimize
machine downtime.
Ask about your Cat Dealer’s exchange
program for major components. This can
shorten repair time and lower costs.
Remanufactured Components.
Genuine Cat Remanufactured parts
save you money. You receive the same
warranty and reliability as new products
at cost savings of 40 to 70 percent.
Components available for the drive
train, engine, and hydraulics.
15
Serviceability and Customer Support
The most serviceable machines from the most committed dealers. World-class product
support. The Cat Dealer network trained experts keep your fleet up and running, maximizing
your equipment investments. Caterpillar. The difference counts.™
16
D8T Track-Type Tractor specifications
Undercarriage
Shoe Type Moderate Service
Width of Shoe 560 mm 22 in
Shoes/Side 44
Grouser Height 78 mm 3 in
Pitch 216 mm 8.5 in
Ground Clearance 618 mm 24.3 in
Track Gauge 2082 mm 82 in
Length of Track on Ground 3207 mm 10.5 ft
Ground Contact Area 3.58 m
2
5,554 in
2
Track Rollers/Side 8
Number of Carrier Rollers 1 per side (optional)
• Positive Pin Retention Track.
Hydraulic Controls
Pump Type Piston-type, Variable
displacement
Pump Output (Steering) 276 L/min 73 gal/min
Pump Output (Implement) 226 L/min 60 gal/min
Tilt Cylinder Rod End Flow 130 L/min 34 gal/min
Tilt Cylinder Head End Flow 170 L/min 45 gal/min
Bulldozer Relief Valve Setting 24 100 kPa 3,500 psi
Tilt Cylinder Relief Valve Setting 24 100 kPa 3,500 psi
Ripper (Lift) Relief Valve Setting 24 100 kPa 3,500 psi
Ripper (Pitch) Relief Valve Setting 24 100 kPa 3,500 psi
Steering 39 200 kPa 5,700 psi
• Steering Pump output measured at 2,300 rpm and
30 000 kPa (4,351 psi).
• Implement Pump output measured at 1,850 rpm and
6895 kPa (1,000 psi).
• Electro-hydraulic pilot valve assists operations of ripper
and dozer controls. Standard hydraulic systems includes
four valves.
• Complete system consists of pump, tank with filter,
oil cooler, valves, lines, linkage and control levers.
Engine
Engine Model Cat C15 ACERT
Gross Power 259 kW 347 hp
Flywheel Power 231 kW 310 hp
Net Power – Caterpillar 231 kW 310 hp
Net Power – ISO 9249 231 kW 310 hp
Net Power – SAE J1349 229 kW 307 hp
Net Power – EU 80/1269 231 kW 310 hp
Net Power – DIN 70020 322 PS
Bore 137 mm 5.4 in
Stroke 172 mm 6.75 in
Displacement 15.2 L 928 in
3
• Engine ratings apply at 1,850 rpm.
• Net power advertised is the power available at the flywheel
when the engine is equipped with fan, air cleaner, muffler,
and alternator.
• No derating required up to 3658 m (12,000 ft) altitude,
beyond 3658 m (12,000 ft) automatic derating occurs.
Service Refill Capacities
Fuel Tank 643 L 170 gal
Cooling System 77 L 20.3 gal
Engine Crankcase* 38 L 10 gal
Power Train 155 L 41 gal
Final Drives (each) 12.5 L 3.3 gal
Roller Frames (each) 65 L 17.2 gal
Pivot Shaft Compartment 40 L 10.6 gal
Hydraulic Tank 75 L 19.8 gal
Variable Fan Hub 3.1 L 0.82 gal
* With oil filters.
Weights
Operating Weight 38 488 kg 84,850 lb
Shipping Weight 29 553 kg 65,152 lb
• Operating Weight: Includes hydraulic controls, blade tilt
cylinder, coolant, lubricants, 100% fuel, ROPS, FOPS cab,
SU-Blade, Single-Shank Ripper, 560 mm (22 in) MS shoes,
and operator.
• Shipping Weight: Includes coolant, lubricants, 20% fuel,
ROPS, FOPS cab, and 560 mm (22 in) MS shoes.
17
D8T Track-Type Tractor specifications
Rippers
Type Single-Shank, Adjustable
Parallelogram
Number of Pockets 1
Maximum Clearance Raised 636 mm 25 in
(under tip, pinned in bottom hole)
Maximum Penetration 1130 mm 44.4 in
(standard tip)
Maximum Penetration Force 127.3 kN 28,620 lb
(shank vertical)
Pry out Force 222.7 kN 50,070 lb
Weight 4085 kg 9,005 lb
(without hydraulic controls)
Total Operating Weight* 38 488 kg 84,850 lb
(with SU-Blade and Ripper)
Type Multi-Shank, Adjustable
Parallelogram
Number of Pockets 3
Overall Beam Width 2464 mm 97 in
Maximum Clearance Raised 593 mm 23.35 in
(under tip, pinned in bottom hole)
Maximum Penetration 780 mm 30.7 in
(standard tip)
Maximum Penetration Force 124.2 kN 27,920 lb
(shank vertical)
Pry out Force 227.9 kN 51,230 lb
(Multi-Shank Ripper with one tooth)
Weight (one shank, without 4877 kg 10,752 lb
hydraulic controls)
Additional Shank 332 kg 732 lb
Total Operating Weight* 39 280 kg 86,597 lb
(with SU-Blade and Ripper)
* Total Operating Weight: Includes hydraulic controls, blade
tilt cylinder, coolant, lubricants, 100% fuel, ROPS, FOPS cab,
Blade, Ripper, 560 mm (22 in) MS shoes, and operator.
Transmission
1 Forward 3.4 kph 2.1 mph
2 Forward 6.1 kph 3.8 mph
3 Forward 10.6 kph 6.6 mph
1 Reverse 4.5 kph 2.8 mph
2 Reverse 8 kph 5 mph
3 Reverse 14.2 kph 8.8 mph
1 Forward – Drawbar Pull (1000) 618.5 N 139 lbf
2 Forward – Drawbar Pull (1000) 338.2 N 76 lbf
3 Forward – Drawbar Pull (1000) 186.9 N 42 lbf
Blades
Type 8SU
Capacity (SAE J1265) 8.7 m
3
11.4 yd
3
Width (over end bits) 3940 mm 12.9 ft
Height 1690 mm 5.5 ft
Digging Depth 575 mm 22.6 in
Ground Clearance 1225 mm 48.2 in
Maximum Tilt 883 mm 34.8 in
Weight* 4789 kg 10,557 lb
(without hydraulic controls)
Total Operating Weight** 38 488 kg 84,850 lb
(with Blade and Single-Shank Ripper)
Type 8U
Capacity (SAE J1265) 11.7 m
3
15.3 yd
3
Width (over end bits) 4267 mm 14 ft
Height 1740 mm 5.71 ft
Digging Depth 575 mm 22.6 in
Ground Clearance 1225 mm 48.2 in
Maximum Tilt 954 mm 37.5 in
Weight* 5352 kg 11,800 lb
(without hydraulic controls)
Total Operating Weight** 39 051 kg 86,093 lb
(with Blade and Single-Shank Ripper)
Type 8A
Capacity (SAE J1265) 4.7 m
3
6.1 yd
3
Width (over end bits) 4990 mm 16.3 ft
Height 1174 mm 3.85 ft
Digging Depth 628 mm 24.7 in
Ground Clearance 1308 mm 51.5 in
Maximum Tilt 729 mm 28.7 in
Weight* 5459 kg 12,035 lb
(without hydraulic controls)
Total Operating Weight** 39 158 kg 86,328 lb
(with Blade and Single-Shank Ripper)
* Includes blade tilt cylinder.
**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.
18
D8T Track-Type Tractor specifications
Standards
• ROPS (Rollover Protective Structure) offered by Caterpillar
for the machine meets ROPS criteria SAE J1040 MAY94,
ISO 3471:1994.
• FOPS (Falling Object Protective Structure) meets
SAE J/ISO 3449 APR98 Level II, and ISO 3449:1992 Level II.
Winches
Winch Model PA140VS
Weight* 1790 kg 3,947 lb
Oil Capacity 15 L 4 gal
Increased Tractor Length 563 mm 22.2 in
Winch Length 1430 mm 56.3 in
Winch Case Width 1160 mm 45.6 in
Drum Width 320 mm 12.6 in
Flange Diameter 457 mm 18 in
Recommended Cable size 29 mm 1.13 in
Optional Cable size 32 mm 1.25 in
Drum Capacity – 84 m 276 ft
Recommended Cable
Drum Capacity – 59 m 193 ft
Optional Cable
Cable Ferrule Sizes – 60 mm 2.36 in
Outside Diameter
Cable Ferrule Sizes – 70 mm 2.76 in
Length
• Variable speed, hydraulically driven, dual braking system,
three roller fairlead.
* Weight: Includes pump and operator controls.
19
D8T Track-Type Tractor specifications
Dimensions
All dimensions are approximate.
1 Ground Clearance 618 mm 24.3 in
2 Track Gauge 2.08 m 82 in
3 Width without Trunnions 2642 mm 8.7 ft
(Standard Shoe)
4 Width Over Trunnions 3057 mm 10 ft
5 Height (Top of Stack) 3448 mm 11.3 ft
6 Height (FOPS Cab) 3456 mm 11.34 ft
7 Height (ROPS/Canopy) 3461 mm 11.35 ft
8 Drawbar Height 708 mm 27.87 in
(Center of Clevis)
9 Length of Track on Ground 3207 mm 126.26 in
10 Overall Length Basic Tractor 4641 mm 15.2 ft
11 Length Basic Tractor 4998 mm 16.4 ft
with Drawbar
12 Length Basic Tractor 5275 mm 17.3 ft
with Winch
13 Length with SU-blade 6091 mm 20 ft
14 Length with U-blade 6434 mm 21.1 ft
15 Length with A-blade 6278 mm 20.6 ft
16 Length with 6422 mm 21 ft
Single-Shank Ripper
17 Length with 6344 mm 20.8 ft
Multi-Shank Ripper
18 Overall Length 7872 mm 25.8 ft
(SU-Blade/SS Ripper)
6, 7 5
1
2
3, 4
8
9
10, 11, 12
13, 14, 15
16, 17
18
20
D8T Track-Type Tractor specifications
Standard Equipment
Standard equipment may vary. Consult your Caterpillar dealer for details.
POWER TRAIN
C15 with ACERT Technology
24-volt electric start
Advanced Modular Cooling System (AMOCS)
Aftercooler, air-to-air (ATAAC)
Air filter with electronic service indicator
Auto-kickdown (auto downshift)
Automatic shift
(2F/2R, 2F/1R, 1F/2R)
Coolant, extended life
Directional shift management
Ether starting aid, automatic
Fan, suction with hydraulic demand drive
Four planet, double-reduction planetary final drives
Fuel priming pump, electric
Muffler with rain cap
Parking brake, electronic
Pre-cleaner with dust ejector
Prescreener
Separator, water/fuel
Thermal shields
Torque divider
Transmission, electronic control, (3F/3R speeds)
Turbocharger, wastegate
Water separator
OTHER STANDARD EQUIPMENT
Air conditioner box, corrosive resistant
Auto-blade assist and AutoCarry ready
CD ROM Parts Book
Ecology drains: engine oil, coolant,
hydraulic oil, torque converter, fuel tank,
power train case and transmission
Engine enclosures and hood, perforated
Equalizer bar, pinned
Front pull device
Guards:
Bottom, hinged
Radiator, hinged fan blast deflector
Independent steering and attachment
hydraulic pumps
Oil cooler, hydraulic
Product Link ready
S•O•SSMsampling ports
Toolbox
Under-hood standard service lamp
Vandalism protection (8 caplocks)
ELECTRICAL
Alternator, 100-amp brushless
Back-up Alarm
Batteries (4) maintenance free 12-volt, 24-volt system
Converter, 12-volt, 10-amp, two power outlets
Diagnostic connector
Horn, forward warning
Starting receptacle
OPERATOR ENVIRONMENT
Advisor operator interface:
- Electronic monitoring system
- Diagnostic service information
- Operator preferences
Armrests, adjustable
Cab, ROPS, FOPS, sound suppressed
Controls, electronic implement with lockout
Decelerator pedal
Dual-twist tiller control
Engine speed control, electronic
Heater
Hydraulic system, electronically controlled
for bulldozer and ripper control
Mirror, rearview
Radio-ready cab
Seat, adjustable contour suspension
(gray fabric)
Seatbelt, retractable 76 mm (3 in)
Steering control, twist tiller with touch shift
Wipers, intermittent
UNDERCARRIAGE
560 mm (22 in) moderate service grouser
with sealed and lubricated track (44 section)
Rollers and idlers, lifetime lubricated
Sprocket rim segments, replaceable
Suspension-type undercarriage,
Eight-roller tubular track roller frame
Carrier roller ready
Track adjusters, hydraulic
Track guides
Two-piece master link
21
D8T Track-Type Tractor specifications
Optional Equipment
Optional equipment may vary. Consult your Caterpillar dealer for details.
OPERATOR ENVIRONMENT
Air conditioner
Air conditioner, fender mounted
Air conditioner, ROPS mounted
Canopy
Enhanced cab
Glass, Ultra-strength up to 40 psi
Operators Arrangement
(gives additional comfort for smaller operators)
Seat, air suspension
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)
AutoCarry 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* – Standard depth
Single-shank* – Deep ripping
Multi-Shank* (includes one tooth)
Ripper attachments:
Additional tooth (for multi-shank ripper)
Pin Puller, hydraulic
OTHER ATTACHMENTS
Counterweights*:
Front mounted
Rear mounted
Drawbar, rigid
Parts book, paper
Starting aids:
Batteries, heavy-duty
Heater, engine coolant, 120- or 240-volt
Striker bars, front and rear
Winch*
* A rear attachment and/or counterweight is recommended
for improved performance and balance.
ELECTRICAL
Alternator, 150-amp
Converter, 24 volt to 12 volt
Light, ripper
Lights, supplemental:
6 Halogen
6 HID
8 HID high-mount for waste application
10 Halogen
10 Halogen high-mount for waste application
10 Halogen, sweeps
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
Non-suspended
Tracks, Pair, Sealed and Lubricated (Standard arrangement):
560 mm (22 in), Extreme service
560 mm (22 in), Extreme service PPR
610 mm (24 in), Extreme servce
660 mm (26 in), Moderate service
710 mm (28 in), Moderate service
Tracks, Pair, Sealed and Lubricated (LGP arrangement):
810 mm (32 in), Moderate service
965 mm (38 in), Extreme service
Roller options:
Carrier rollers (one per side)
Seals, symmetrical, idler/roller
POWER TRAIN
Fan, reversible
Fuel system, fast fill
Pre-cleaner, turbine
Prelube, engine, automatic
Quick oil change system
Radiator, high ambient
22
Notes
23
Notes
For more complete information on Cat products, dealer services,
and industry solutions, visit us on the web at www.cat.com
© 2007 Caterpillar
All Rights Reserved
Printed in U.S.A.
Materials and specifications are subject to change without notice.
Featured machines in photos may include additional equipment.
See your Caterpillar dealer for available options.
CAT, CATERPILLAR, ACERT, ADEM, their respective logos, “Caterpillar Yellow” and the
POWER EDGE trade dress, as well as corporate and product identity used herein,
are trademarks of Caterpillar and may not be used without permission.
AEHQ5590-01 (4-07)
D8T Track-Type Tractor
R
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