Milton CAT D6K User Manual
D6K
Track-Type Tractor
®
®
Engine
Engine Model Cat®C6.6 ACERT™
Flywheel Power 93.2 kW 125 hp
Weights
Operating Weight – XL 12 886 kg 28,409 lb
Operating Weight – LGP 13 467 kg 29,690 lb
D6K Track-Type Tractor
Engine
The Cat®C6.6 engine meets stringent
✔
Tier 3/Stage IIIA emission standards
while providing outstanding engine
performance, fuel efficiency and
long-term durability. pg. 4
Serviceability and Accessibility
Grouped service points allow for
✔
efficient checks and maintenance,
from the ground level. The new design
of the cooling package facilitates
serviceability and cleaning of the
radiator and cooling fan. pg. 12
Structure
Steel castings and heavy steel plates are
✔
welded to insure a rigid one-piece frame
structure. Structures are designed to last
throughout the extended service life of
the D6K. pg. 5
Work Tools
Caterpillar offers a variety of work
tools, designed with the strength and
versatility needed to accomplish the
job quickly and effectively. pg. 13
Drive Train
The hydrostatic drive with electronic
✔
control provides precise modulation for
quick and smooth operation, superior
maneuverability and comfortable
operation, increasing productivity. pg. 6
2
Operator Station
A new operator station offers excellent
✔
visibility and superior comfort.
Standard features include a fully
adjustable air suspended seat, air
conditioning, electro-hydraulic controls,
advanced monitoring system and low
sound levels for comfortable operation
and maximum productivity. pg. 8
SystemOne™ Undercarriage
Designed exclusively by Caterpillar for
✔
Cat Machines, SystemOne Undercarriage
extends undercarriage system life,
improves reliability and reduces
Owning and Operating costs. pg. 10
AccuGrade®Laser and GPS Machine
Control and Guidance Systems
AccuGrade Laser and GPS systems can
✔
be easily installed on the AccuGrade
ARO (Attachment Ready Option)
equipped machine. pg. 11
Total Customer Support
Your Cat®Dealer offers a wide range
of services that can be set up under a
Customer Support Agreement when you
purchase your equipment. The dealer
will help you choose a plan that can
cover everything from machine and
attachment selection to replacementhelping get the best return on
investment. pg. 14
✔ New Feature
3
Engine
The new Caterpillar®C6.6 Diesel Engine with ACERT™ Technology meets worldwide
emissions requirements for EPA Tier 3, EU Stage IIIA and Japan Moc Step 3 engine exhaust
emission regulations, while providing excellent performance.
lb x
N x
1000
1000
250
55
50
45
200
40
35
150
30
25
100
20
Drawbar Pull
15
50
10
5
0
0
01234567
0 2 4 6 8 10
D6K Drawbar Pull
Drawbar Pull
vs.
Ground Speed
Speed
Torque Rise. The direct injection
electronic fuel system provides a
controlled fuel delivery increase as
the engine lugs back from rated speed.
This results in increased horsepower
below rated power. A combination
of increased torque rise and maximum
horsepower improves response,
provides greater drawbar pull and
faster dozing cycles.
Cooling System. The cooling system is
a single coolant unit including hydraulic
oil cooler, radiator, ATAAC and fan
installation. Aluminum cores and
hydraulically driven demand fan provide
optimum cooling and fuel efficiency.
Electric Fuel Priming Pump. A standard
electric fuel priming pump is located in
the primary fuel filter base above the
combined water separator/primary fuel
filter. A switch enables to easily prime
the fuel system after a fuel filter service.
Cat®C6.6 Engine with ACERT™
Technology. The Cat®C6.6 is a
6.6 liters (403 in3) displacement,
six cylinder, inline configured engine
equipped with a Caterpillar Common
Rail fuel System. It uses ACERT
Technology, a series of Caterpillar
engineered innovations that provide
advanced electronic control, precision
fuel delivery and refined air management,
resulting in outstanding performance
and lower emissions. The Cat C6.6 with
ACERT Technology meets the U.S. EPA
Tier 3, European Union Stage IIIA and
Japan MOC Step 3 emissions standards.
Design. The C6.6 features a compact
design with heavy-duty engine features
for outstanding durability, reliability
and performance. The C6.6 incorporates
a new cross flow cylinder head design,
a 4 valve head and an ADEM A4
electronic controller.
Electronic Controls. The C6.6 engines
use advanced electronic controllers,
which have a proven track record for
performance and reliability. ADEM A4
Electronic Control Module (ECM)
receives data from engine-mounted
sensors and adjusts critical parameters
to maintain optimum performance.
These adjustments also optimize fuel
economy and emissions compliance.
Electronics also make engines easier
to troubleshoot and repair.
Fuel Delivery. Fuel is introduced in
the combustion chamber in a number
of precisely controlled microbursts.
Injecting fuel in this way allows for
precise shaping of the combustion
process. The ADEM™ A4 module
directs the injectors to deliver precise
quantities of fuel at exactly the right
times during combustion for optimum
efficiency and performance.
Air Management. The C6.6 uses a
turbocharger fitted with a smart waste
gate to give precise control of the boost
pressure. Over the entire engine operating
ranges the result is improved: Throttle
response, Lower fuel Consumption and
optimized engine performance. A new
cross-flow design in the cylinder head
facilitates air movement, while tighter
tolerances between the piston and
cylinder liner are reducing blow by gases.
mph
km/h
Turbocharged and Aftercooled. A wellmatched turbocharger and air-to-air
aftercooler results in higher power while
keeping rpm steady and exhaust
temperatures low.
4
Structure
The frame is engineered to handle the most demanding applications, and is built to last
throughout the extended service life of the D6K.
Main Frame. The D6K one-piece main
frame is designed to absorb high
impact shock loads and twisting forces.
Robotic welding provides deep
penetration and consistency, ensuring
high quality, durability and reliability
throughout the structure.
Track Roller Frame. Track roller frames
feature an engineered box-section
design, which provides superior
strength and resistance to bending.
Equalizer bars are pinned in their
center to the machine main frame and
at the ends to each track roller frame.
This allows the forward ends of the track
roller frames to oscillate to keep more
track on the ground in uneven underfoot
conditions while providing maximum
traction and operator comfort.
Heavy Duty Components. Heavy duty
radiator grill, bottom guards and fuel
tank guard are available, for additional
protection in severe applications.
5
Drive Train
The D6K features an electronically controlled hydrostatic drive system with independent
power and control of each track for fast acceleration, variable speed control, and on-the-go
direction changes.
Hydrostatic Drive. The electronically
controlled hydrostatic drive system
automatically maintains engine speed
to match the power requirements of
the application for peak performance.
The hydrostatic drive train also offers
independent power and control of each
track, for fast acceleration, infinitely
variable speed control and on-the-go,
direction changes. The operator can
command smooth “power turns” or
even counter-rotation of the tracks for
precise steering control in tight areas.
The Caterpillar hydrostatic drive system
manages itself, freeing the operator to
concentrate on using the Caterpillar
track-type tractor’s superb agility, speed,
and maneuverability to do more
productive work.
Infinitely Variable Speed Control.
Hydrostatic drive provides infinite
speed selection from 0 to 10 km/h
(0 to 6.2 mph) in forward and reverse.
This lets the operator select the optimum
speed for ground and job conditions.
It also eliminates power interruption
during shifting.
Ground Speed Balancing. Hydrostatic
drive provides a completely “step-less”
transmission of power and automatically
matches travel speed and implement
loads for increased efficiency and easier
operation.
High Power Utilization. The hydrostatic
drive system on the D6K is designed
to use full available engine power
throughout the machine working cycle.
If the implement hydraulic system is not
in use, this engine power can be
delivered to the drive train, providing
high drawbar pull and fast travel speeds.
If the implement hydraulics are being
worked hard, the machine control ECM
will automatically slow the tracks as
necessary to use the full remaining
engine power, without overloading
and stalling the engine. As soon as the
implement hydraulic load is decreased,
the machine control ECM will
automatically speed up the tracks until
the machine is traveling at the speed
the operator has commanded with the
Hystat Control (left).
Unsurpassed Maneuverability.
Power turn and counter-rotation capability
improve machine maneuverability and
productivity. On the D6K, power turns
are accomplished by slowing the speed
of one track versus the other, while
maintaining power to both tracks.
The Cat Hystat power turn feature also
enables the D6K to handle large loads
around corners or through hard spots
encountered when dozing. Power turn
capability improves machine mobility
in soft underfoot conditions and is
very effective for controlling machine
operation on side slopes. Counter-rotation
also provides easy, quick maneuvering
in tight areas or congested job sites.
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