Milton CAT 345D L User Manual
Engine
Engine Model Cat®C13 ACERT™
Net Flywheel Power 283 kW 380 hp
Weights
Operating Weight – 45 375 kg 100,040 lb
Long Undercarriage
Operating Weight – 49 265 kg 108,610 lb
Long Variable
• 6.9 m (22'8") HD Reach Boom, R3.9m (12'10") Stick,
1219 mm (48") GP-C Bucket, 750 mm (30") TG Track Shoes,
Long Undercarriage
345D L
Hydraulic Excavator
®
®
2
345D L Hydraulic Excavator
The 345D L hydraulic excavator’s high performance and rugged durability combine
to maximize your productivity.
Outstanding performance. Excellent control,
high stick and bucket forces, impressive lift
capacity, simplified service and a comfortable
operator station to increase your productivity
and lower operating costs.
Versatility
Caterpillar offers a wide variety of
optional and factory-installed attachments
to enhance performance and improve
job site management. pg. 12
Work Tools
A variety of work tools, including
buckets, couplers, hammers, and shears
are available through Cat®Work Tools.
pg. 11
Complete Customer Support
Your Cat dealer offers a wide range
of services – from assistance with
configuring your machine to best match
your application to customer support
agreements to meet your maintenance
needs. Repair Option Programs
guarantee the cost of repairs up front
and help you to avoid unscheduled
repairs. pg. 15
Operator Station
Provides maximum space, excellent
visibility and easy access to all
switches. The monitor is a full-color
graphical display that allows the
operator to understand the machine
information easily. Overall, the cab
provides a comfortable environment
for the operator. pg. 6
Hydraulics
The hydraulic system has been designed
to provide reliability and outstanding
controllability. An optional Tool Control
System provides enhanced flexibility.
pg. 5
C13 Engine with ACERT™ Technology
ACERT™ Technology works at the
point of combustion to optimize engine
performance and provide low exhaust
emissions to meet U.S. EPA Tier 3 and
EU Stage IIIA emission regulations, with
exceptional performance capabilities
and proven reliability. pg. 4
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Service and Maintenance
Fast, easy service has been designed
in with extended service intervals,
advanced filtration, convenient filter
access and user-friendly electronic
diagnostics for increased productivity
and reduced maintenance costs. pg. 14
AccuGrade™ Grade Control System
for Hydraulic Excavators
The AccuGrade System helps to move
material right the first time, reduces
costs and increases material utilization.
The system improves operator skills,
helping with labor requirements and
improves safety on the job site. pg. 13
Boom, Sticks and Attachments
Built for good performance and long
service life, Cat booms and sticks are
box-section structures with thick multiplate fabrications to resist high stress.
Three lengths of booms and five types
of sticks are available, offering a range
of configurations suitable for a wide
variety of applications and conditions.
pg. 10
Structures
Caterpillar®design and manufacturing
techniques assure outstanding durability
and service life from these important
components. pg. 9
Undercarriage
Cat designed excavator undercarriage
is stable, durable and low maintenance.
Available in Fixed, Variable and Wide
Variable gauge configurations to meet
lift capacity and bucket size needs. pg. 8
Performance. The 345D L, equipped
with the C13 with ACERT Technology,
meets the U.S. EPA Tier 3 emissions
while providing 10% more horsepower
compared to the 345C L. The building
blocks of ACERT Technology are fuel
delivery, air management, and electronic
control – providing better fuel economy
and reduced wear.
Emissions. ACERT Technology is a
differentiated technology that reduces
emissions at the point of combustion.
The technology capitalizes on
Caterpillar’s proven leadership
in three core engine systems: fuel,
air and electronics.
Fuel System. The Cat C13 features
electronic controls that govern the
mechanically actuated unit fuel injection
(MEUI) system. MEUI provides the
high-pressure required to help reduce
particulate emissions and deliver
better fuel economy through finer
fuel atomization and more complete
combustion.
Controllers. The mechanically actuated
unit injection system features a highpressure fuel injection system, proven
to significantly reduce fuel consumption
and particulate emission. Electronic Unit
Injection (EUI) produces high-pressure
and affords the integration of electronics
with fewer components. The modular
design of the electronic control system
allows greater update, flexibility,
improves serviceability and lowers
repair costs.
ADEM™ A4 Engine Controller.
The ADEM™ A4 electronic control
module manages fuel delivery to get
the best performance per liter or gallon
of fuel used. The engine management
system 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.
Turbocharger. The Cat C13 uses a
wastegate turbocharger for improved
performance.
• The wastegate valve controls
excessive engine boost pressure
by allowing exhaust to bypass the
exhaust-side turbine.
• The wastegate also reduces turbine
wear in high RPM, low load conditions
and optimizes air and fuel delivery
for peak engine performance.
• The turbocharger increases the density
of the air, enabling the engine to
produce more power with few
effects from altitude.
Low Sound and Vibration Levels.
The engine mounts are rubber-isolating
mounts matched with the engine package
to provide optimum sound and vibration
reduction. Further noise reduction has
been achieved through design changes
to the isolated top cover, oil pan,
multiple injection strategy, insulated
timing cover and sculpted crankcase.
Air Cleaner. The radial seal air filter
features a double-layered filter core for
more efficient filtration and is located in
a compartment behind the cab. A warning
is displayed on the monitor when dust
accumulates above a preset level.
Cooling System. The 345D L layout
completely separates the cooling
system from the engine compartment.
The cooling fan is hydraulically driven
with variable speed control based
on the ambient temperature, coolant
temperature, and hydraulic oil
temperature. This unique feature
assists in the management of engine
power and improves noise efficiency
while providing optimized cooling.
Cold Weather Starting Kit. The optional
kit includes two additional batteries,
heavy-duty battery cables, and the ether
starting aid. With this kit, the 345D L
has the capability to start at –32° C
(–25.6° F).
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C13 Engine with ACERT™ Technology
Built for power, reliability, economy and low emissions.
Pilot System. The pilot pump is
independent from the main pumps
and controls the front linkage, swing
and travel operations. The pilot control
valve operation is proportional to control
lever movement, delivering outstanding
controllability.
Component Layout. The component
location and hydraulic system design
provide the highest level of system
efficiency. The main pumps, control
valve and hydraulic tank are located
as close to each other as possible.
This design makes it possible to
use shorter tubes and lines between
components, reducing friction losses
and pressure drops.
Heavy Lift Standard. The operator can
select the heavy lift mode at the push
of a button to boost lifting capability
and provide improved controllability
of heavy loads.
Hydraulic Cross-Sensing System.
The hydraulic cross sensing system
utilizes each of two hydraulic pumps
to 100 percent of engine power under
all operating conditions. This improves
productivity with faster implement
speeds and quicker, stronger pivot turns.
Boom and Stick Regeneration Circuits.
A hydraulically operated stick
regeneration circuit saves energy and
improves multi-function performance
during the stick-in operation. New on
the 345D L, the boom regeneration
circuit is operated electrically, and this
system is managed by the machine ECM.
The system improves cycle times and fuel
efficiency, increasing your productivity
and reducing operating costs.
Boom and Swing Priority. The hydraulic
system on the 345D L provides automatic
priority function for boom-up and swing
operations eliminating the need for
work mode buttons. When the boom
or swing lever is activated, the system
automatically assigns priority based
on operator demand.
Hydraulic Cylinder Snubbers.
Snubbers are located at the rod-end
of the boom cylinders and both ends
of the stick cylinders to cushion shocks
while reducing sound levels and
extending component life.
5
Hydraulics
Cat®hydraulics deliver power and precise control to keep material moving.
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Designed for simple, easy operation, the 345D L allows the operator to focus on production.
Operator Station
Cab Design. The workstation is spacious,
quiet and comfortable, assuring high
productivity during a long work day.
The air conditioner and attachment
switches are conveniently located on
the right-hand wall, and the key switch
and throttle dial are on the right-hand
console. The monitor is easy to see
with excellent visibility.
Standard Cab Equipment. To enhance
operator comfort and productivity, the
cab includes a lighter, drink holder, coat
hook, service meter, literature holder,
magazine rack and storage compartment.
Monitor Display Screen. The compact,
full color 400x234 pixels Liquid Crystal
Display (LCD), displays machine
maintenance, diagnostic and prognostic
information, in twenty-seven different
languages. The keypad allows the
operator to select machine operation
conditions and to set view preferences.
The Master Caution Lamp blinks ON
and OFF when one of these critical
conditions occur:
• Engine oil pressure low
• Coolant temperature high
• Hydraulic oil temperature high
Under the normal condition or the
default condition, the monitor display
screen is divided into four areas: clock
and throttle dial area, gauge area, event
display area and multi-information
display area.
Clock and Throttle Dial Area. The clock,
throttle dial position and green gas-station
icon are displayed on the monitor screen.
Gauge Area. Three analog gauges, fuel
level, hydraulic oil temperature and
coolant temperature, are displayed
on the monitor screen.
Event Display Area. Machine information
is displayed on the monitor screen with
the icon and language.
Multi-information Display Area.
This area is reserved for displaying
information that is convenient for the
operator. The “CAT” logo is displayed
when no information is available to
be displayed.
Console. The consoles feature a simple,
functional design to reduce operator
fatigue, ease of switch operation and
excellent visibility. Both consoles have
attached armrests with height adjustments.
Travel Controls. The 345D L uses pilot
operated control levers, positioned so the
operator can operate with arms on the
armrests. The vertical stroke is longer
than the horizontal stroke, reducing
operator fatigue. The control lever grips
are shaped to fit into the operator’s
hands. The horn switch and one-touch
low idle switch are positioned on the
left and right grip.
Hydraulic Activation Control Lever.
For added safety, this lever must be
in the operate position to activate the
machine control functions.
Seat. A high-back, heated, air-suspension
seat is now standard on the 345D L.
The seat allows a variety of adjustments
to suit the operator’s size and weight
and provides a comfortable working
environment. Wide adjustable armrests
and a retractable seatbelt are also included.
Climate Control. Positive filtered
ventilation with a pressurized cab comes
standard on the 345D L. Fresh air or
re-circulated air can be selected with
a switch on the left console.
Cab Exterior. The exterior design uses
thick steel tubing along the bottom
perimeter of the cab, improving the
resistance of fatigue and vibration.
This design allows the FOGS to be
bolted directly to the cab, at the factory
or as an attachment later, enabling the
machine to meet specifications and
job site requirements.
Cab Mounts. The cab shell is attached
to the frame with viscous rubber cab
mounts, which dampen vibrations and
sound levels while enhancing operator
comfort.
Windows. All glass is affixed directly
to the cab, eliminating window frames
and providing excellent visibility.
The upper front windshield opens,
closes and stores on the roof above
the operator with a one-touch action
release system.
Wipers. Pillar-mounted wipers increase
the operator’s viewing area and offer
continuous and intermittent modes.
Skylight. An enlarged skylight with
sunshade provides excellent visibility
and good ventilation.
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Undercarriage Options. Track with
Positive Pin Retention 2 (PPR2) and
cast idlers are available as attachments
on the 345D L. The PPR2 prevents
loosening of the track pin from the track
link and the cast idler is designed for
extended life. Both options are ideal for
extreme applications or those that require
a large amount of travel.
Travel Motors. Two-speed axial piston
hydraulic motors provide the 345D L
drive power and speed selection.
When the high-speed position is
selected, the machine automatically
changes between computer-controlled
high and low speeds depending on
drawbar-pull requirements.
Straight-line Travel Circuit. The straightline travel circuit is incorporated into
the hydraulic system, which maintains
low-speed, straight-line travel, even
when operating the front linkage.
Final Drive. The final drives are a threestage planetary reduction. This design
results in a complete drive/brake unit
that is compact and delivers excellent
performance and reliability.
Track. The 345D L comes standard with
a grease lubricated track called GLT4.
The track links are assembled and sealed
with grease to decrease internal bushing
wear, reduce travel noise, and lower
operating costs by extending service life.
The track link for the 345D L has been
re-designed to avoid the concentration
of stresses and improve durability
and reliability.
Track Guards. The idler guard and
bolt-on center guard are standard
equipment. They help maintain track
alignment while traveling or working
on slopes. For applications that require
additional track protection or alignment,
optional guards are available.
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Undercarriage
Durable undercarriage absorbs stresses and provides excellent stability.
Carbody. The 345D L has three
undercarriage options to meet regional
transportation requirements and
application needs.
• Fixed gauge for narrow transport
and weight sensitive areas.
• Variable gauge for increased
track and ground clearance and
over-side lift.
• Wide variable gauge, provided as
an attachment to the variable gauge
machine, provides a significant
increase in over-side lift with the
capability for handling larger buckets.
The carbody utilizes a columnless
design that allows the swing bearing
to be directly mounted on the top plate
for excellent rigidity and strength.
Upper Frame. The rugged main frame
is designed for maximum durability.
Robot welding is used for consistent,
high-quality welds. The main channels
are box sections connected by a large
diameter tube in the boom foot area to
improve rigidity and strength. The outer
frame utilizes curved side rails for rigidity
against bending and torsional loads.
Counterweights. The 345D L has
several counterweight options to best
match the machine to your application.
Counterweight removal device is
available for the 7.6 mt (16,760 lb)
and 8.7 mt (19,180 lb) counterweights
to facilitate transport when needed.
Track Roller Frame. Fixed Gauge
Undercarriage
• Uses a press-formed, pentagonal
section for the track frame that is
robot-welded for weld consistency
and quality. The track frame has
been designed so that the top of
the track frame has a steep angle
to help prevent accumulation
of mud and debris.
Variable Gauge Undercarriage
• The track roller frame is made of
thick steel plate that is bent into a
U shape and welded to the bottom
plate to create a box structure.
The box structure design increases
rigidity and impact resistance.
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Structures
The 345D L structural components are the backbone of the machine’s durability.
Front Linkage Attachments.
Three length of booms and five types
of sticks are available, offering a range
of configurations suitable for a wide
variety of application conditions.
Boom Construction. The 345D L booms
have large cross-sections and internal
baffle plates to provide long life and
durability. Forged steel is used in critical
high-load areas such as the boom-foot
and boom cylinder connection.
Long Reach Boom – 7.4 m (23'3") long.
The Long Reach boom, when combined
with the 4.3 m (14'1") stick, provides a
similar digging envelope to the previous
345C. This boom/stick combination has
a significantly reduced transport height,
eliminating the need to remove the stick
cylinder pin.
HD Reach Boom – 6.9 m (22'8") long.
The Heavy Duty (HD) Reach boom is
designed to balance reach, digging force
and bucket capacity, making it ideal for
a wide range of applications.
Mass Excavation Boom – 6.55 m (21'6")
long. The mass boom is designed to
provide maximum digging forces, bucket
capacity and truck loading productivity.
The mass boom comes with two stick
options for further job site versatility.
Stick Construction. The 345D L sticks
are made of high-tensile strength steel,
using a large box section design,
interior baffle plates and an additional
bottom guard.
Power Link. The 345D L power link
improves durability, increases machinelifting capability in key lifting positions,
and is easier to use compared to the
previous lift bar designs.
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Boom, Sticks and Attachments
Designed for maximum flexibility to keep productivity and efficiency high on all jobs.
Work Tools. Choose from a variety
of work tools such as hammers, shears,
pulverizers, compactors, multi-processors,
sorting grapples and couplers. Ask your
Cat dealer for information on
attachments or special configurations.
General Purpose Buckets. General
purpose (GP) buckets are best suited
for digging in low-impact, moderately
abrasive materials such as dirt, loam,
gravel and clay.
Heavy Duty Buckets. Heavy duty (HD)
buckets are designed for a wide range
of moderately abrasive applications such
as mixed dirt, clay and rock. HD buckets
have optimized loading and dumping
characteristics and more robust
construction than the GP buckets.
Heavy-Duty Power Buckets.
Heavy duty
power (HDP) buckets are for use in
moderately abrasive applications where
breakout force and cycle times are
critical. Decreased tip radius maximizes
tip force and improves cycle times in
most materials. Not ideal for use in sticky
material conditions. Cutting edge and
GET are up-sized.
Heavy Duty Rock Buckets. Heavy duty
rock (HDR) buckets are designed for
aggressive bucket loading in highly
abrasive applications such as shot rock
and granite. Features include:
• Thick wear plates to extend the life
of the bucket in severe applications.
• Side wear plates that extend further up
the side of the bucket for maximum
protection in rocky soils.
• Sidebar protectors are available for
sidebar protection, or side-cutters
can be used to provide increased
fill characteristics and bucket
wear protection.
Rock Ripping Buckets. Rock ripping
(RR) buckets are ruggedly constructed,
narrow buckets for ripping in applications
where material penetration and an inability
to blast is an issue. The aggressive liptype ripping design uses five sharp or
twin sharp teeth in a staggered position.
The staggered design allows one or two
tips to penetrate first, providing higher
breakout forces.
Caterpillar Ground Engaging Tools (GET).
Caterpillar K Series™ GET is featured
on the 345D L buckets. The K Series™
system uses a vertical retainer, which is
easier to remove and install than the old
Cat J Series pin. There are a variety of
teeth, side cutters, and sidebar protectors
to match operating conditions.
• The teeth are designed to be
extremely aggressive and offer
excellent penetration.
• The side-cutter design is aggressive
in trenching applications, improving
efficiency and bucket payload.
Service Life. Caterpillar
®
buckets increase
service life and reduce repair costs.
• Dual radius design for increased life
and reduced wear.
• Robot welding of hinge assembly
for increased weld penetration and
longer life.
• Incorporates the aggressive and easier
to install K Series™ GET system.
• High strength and heat-treated steel
that exceeds T-1 in high wear areas.
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Work Tools
The 345D L has an extensive selection of work tools to optimize machine performance.
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