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340D2 L

  • 340D2 L - Large Excavators
  • 340D2 L - Large Excavators
  • 340D2 L - Large Excavators
  • 340D2 L - Large Excavators
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340D2 L

The 340D2 L delivers excellent productivity with low owning and operating costs and can be used in a wide range of applications making this machine extremely versatile. The 340D2 L features excellent reliability and durability even when working in the toughest jobs. Improved visibility combined with world class comfort levels ensures reduced fatigue and optimized performance levels. At the heart of the machines performance is a powerful Cat C9 ACERT engine, which boasts 208 kW (279 hp) combined with a smooth, precise, hydraulic system. This highly efficient design minimizes losses and permits fast hydraulic cycle times.

Engine Model
Cat® C9 with ACERT™ Technology
Net Flywheel
208 kW
Operating Weight
41500 kg


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A world class design combining excellent performance with low fuel consumption and top reliability.


340D2 L structural components and undercarriage are the backbone of the machine’s durability.


With a heavy-duty high wide undercarriage, the machine can take full advantage of its fast implements. This wider and heavier undercarriage also improves lifting performance over the front and side of the machine.


High level of sustained production, improved performance, reliability and durability increase your productivity and lower your operating costs.

Engine and Hydraulics

A powerful Cat C9 ACERT engine that meets U.S. EPA Tier 3, EU Stage IIIA, Japan 2006 (Tier 3) equivalent, and China Nonroad III emission standards, combined with the highly efficient hydraulic system deliver excellent performance with low fuel consumption.

Maximum Versatility

A variety of work tools, including buckets, hammers, rippers are available for applications such as demolition, site clean-up, scrap processing, breaking up road surfaces and bedrock through Cat Work Tools.

Operation Station

The spacious cab features excellent visibility and easy-to-access switches. The monitor features a full‑color graphical display that is easy to see and use. Overall, the new cab provides you with a comfortable working environment for maximum production and efficiency.

Powerful, reliable and economic.

Driving Unprecedented Performance with Lower Fuel Consumption

Emission Standards

The Cat C9 ACERT engine has been designed to meet U.S. EPA Tier 3, EU Stage IIIA, Japan 2006 (Tier 3) equivalent, and China Nonroad III emission standards. The engine incorporates proven robust components and precision manufacturing you can count on for reliable and efficient operation.

Isochronous Control

The Isochronous engine speed control improves fuel efficiency and reduces fuel consumption and noise levels by managing pump and engine speed.

Filtration System

The C9 ACERT engine features an improved 3-stage filtration system to ensure reliability even with low quality fuel.

Automatic Engine Speed Control

Automatic engine speed control is activated during no-load or light-load conditions to reduce engine speed – all to help minimize fuel consumption.

Low Sound and Vibration

The Cat C9 ACERT engine is built to run quietly with limited vibration, which contributes to improving your operator comfort.

Electric Fuel Priming Pump

Electric priming pump eliminates the need for manual priming and reduces the risk of fuel contamination by preventing unfiltered fuel from being backfilled during filter changes.

Ergonomically designed to keep you comfortable and productive all day long.

Joystick Control and Console

Low-effort pilot-operated joystick controls are designed to match your natural wrist and arm position for maximum comfort and minimum fatigue. The right and left joystick console can be adjusted to meet your individual preferences, improving overall comfort and productivity during the course of a long work day.

Windows and Wipers

All glass is affixed directly to the cab to maximize visibility, eliminating window frames. The upper front windshield opens, closes, and stores on the roof above the operator with a one-touch action release system. Pillar-mounted wipers increase your operator’s viewing area and offer continuous and intermittent modes.


The LCD monitor is equipped with a warning lamp and buzzer for critical engine oil pressure, coolant temperature and oil temperature. Programmable in up to 42 languages to meet today’s diverse workforce, the monitor clearly displays critical information needed to operate efficiently and effectively.


The suspension seat provides a variety of adjustments to accommodate a wide range of operators preferences. All seats include a reclining back, upper and lower seat slide adjustments, and height and tilt adjustments to meet your operator needs for comfort and productivity.

Climate Control

Positive filtered ventilation with a pressurized cab is standard. Fresh air or re-circulated air can be selected with a switch on the left console.

Cab Structure and Mounts

The cab shell is attached to the frame with viscous rubber mounts, which dampen vibrations and sound levels while enhancing your operators’ comfort. Thick steel tubing along the bottom perimeter improves the cab’s resistance to fatigue and vibration.

Cat hydraulics deliver power and precise control to keep material moving.

Hydraulic System

Hydraulic system pressure from the two hydraulic pump system delivers terrific digging performance and productivity.

Pilot System

An independent pilot pump enables smooth, precise control for the front linkage, swing, and travel operations.

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.

Component Layout

The hydraulic system and component locations have been designed to provide a high level of system efficiency. The main pumps, control valves, and hydraulic tank are located close together to allow for shorter tubes and lines between components, reducing friction loss and pressure drops.

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.

Auxiliary Hydraulic Valve

Control circuits are available as attachments to improve versatility. They allow operation of high- and medium-pressure tools such as shears, grapples, hammers, pulverizers, multiprocessors, and vibratory plate compactors.

Boom and Stick Regeneration Circuit

Boom and stick regeneration circuits save energy during boom-down and stick-in operation to increase efficiency and reduce cycle times and pressure loss for higher productivity, lower operating costs, and increased fuel efficiency.

Hydraulic Filter

The encapsulated filter is mounted in an external chamber from the tank which minimizes contamination risk and extends hydraulic system life.

HDHW structural components, Heavy Duty High Wide carbody and undercarriage are the backbone of the machine’s durability.

Robotic Welding

Up to 95% of the structural welds on a Cat Excavator are completed by robots. Robotic welds achieve over three times the penetration of manual welds.

Heavy-duty High Wide Carbody Design and Dedicated Track Roller Frames

X-shaped, box-section carbody provides excellent resistance to torsional bending. Robot-welded track roller frames are press-formed, pentagonal units to deliver exceptional strength and service life.

HDHW Undercarriage

The heavy duty high wide (HDHW) and durable Cat undercarriage absorbs stresses and provides excellent stability. Additionally, the high ground clearance is ideal in rocky environments, bringing the carbody in a high position, less exposed to damage from rocks.

Long Undercarriage

The long undercarriage (L) maximizes stability and lift capacity. This long, wide and sturdy undercarriage offers a very stable work platform.


The 340D2 L track links are assembled and sealed with grease to decrease internal bushing wear, reduce travel noise and extend service life lowering operating costs.

Rollers and Idlers

Sealed and lubricated track rollers, carrier rollers, and idlers provide excellent service life, to keep the machine in the field longer.


The 6.25 mt (6.9 t) and 8.45 mt (9.3 t) counterweights are a good choice for heavy lifting with long and heavy duty high wide undercarriage, counterweights are bolted directly to the main frame for extra rigidity.

Designed for flexibility, high productivity, and efficiency in a variety of applications.

Heavy-Duty Front Linkage

The 6.5 m (21'4") heavy-duty (HD) reach boom is reinforced, to be used in the severest applications for maximum digging capability. The boom is made of high-tensile-strength steel using a large box-section design with interior baffle plates and an additional bottom guard for long life and durability. Booms and sticks are stress-relieved for added durability.

The HD reach boom has two stick options available to meet all your application requirements:The 3.2 m (10'6") is a versatile option that will meet the needs for most construction applications.The 2.8 m (9'2") stick is best used with high-capacity buckets in trenching and excavation applications.

Mass Boom Front Linkage

The mass excavation (ME) front linkage is designed to maximize machine performance through superior digging forces and a larger bucket capacity. The 6.18 m (20'3") mass excavation boom is reinforced with a large cross section and internal baffle plates for long life and durability.The 2.55 m (8'4") stick is designed for large earth moving applications.The 2.15 m (7'1") stick is designed for extra digging and lifting forces with shorter reach.

Features to help protect you day in and day out.

Caterpillar builds safety into every machine, allowing operators and service technicians to get home safely everyday.

Built with similar safety features like our standard machine, the 340D2 L accumulator high-pressure oil is discharged after key-off to minimize risk during servicing.

Clear View

Optional rearview camera systems improve rearward and right-hand-side visibility, giving a clear view to the back side of the machine.

This not only improves job site safety, but also enhances productivity and helps to maintain the asset value of your machine.

Hydraulic Lockout Lever

The standard hydraulic lockout lever isolates all hydraulic and travel functions in the lowered position. It is specifically designed to not allow the operator to leave the cab without first lowering it.

Safe Platform

Anti-skid plating with countersunk bolts reduces the potential for slippage and trip hazards, providing a safe platform for all routine service and maintenance needs.


A full length firewall separates the engine from the hydraulic pump and offers protection in the event of an incident.

Three Circuit Breakers and Battery Disconnect Switch

Three circuit breakers protect critical electrical components to increase machine uptime.

A battery disconnect switch helps to deter theft by isolating the battery and enhances safety when servicing the machine.

Shut-off Switch

Ground level shut-off switch stops all fuel to the engine when activated and shuts down the machine.

Tools to make you productive and profitable.

Each Cat work tool is designed to optimize the versatility and performance of your machine. An extensive range of buckets, compactors, grapples, multi-processors, rippers, crushers, pulverizers, hammers and shears is available for your 340D2 L.


Cat buckets and Cat Ground Engaging Tools (GET) are designed and matched to the machine to ensure optimal performance and fuel efficiency.

General Duty Buckets (GD)

General Duty buckets are designed for use in low impact, lower abrasion materials such as dirt, loam, and mixed compositions of dirt and fine gravel.

Heavy Duty Buckets (HD)

Heavy Duty buckets are designed for a wide range of impact and abrasion conditions including mixed dirt, clay and rock. This bucket style is recommended for trenching work, and for the general contractor working in a variety of different applications.

Severe Duty Buckets (SD)

Severe Duty buckets are designed for higher abrasion conditions such as shot granite. When compared to the Heavy Duty bucket, wear bars and wear plates are substantially thicker and larger and add protection against abrasion and gouging wear.

Rip and Load Package

Caterpillar offers a unique Rip and Load arrangement for hydraulic excavators working in quarries that are specialists in aggregates production. Quick couplers, Ripper tines and Rock buckets that are fully compatible with the Cat Excavator range will deliver excellent ripping and loading performance. Minimum tool change times will help match ripping, loading and rock production needs. Ripper-to-bucket changes are made hydraulically in less than 35 seconds. This gives the operator complete flexibility to continually adjust ripping, sorting and loading work.

E Series Hammers

Cat E Series Hammers feature a rugged design for extended durability and solid reliability, and features such as automatic shut-off, silencing and vibration buffering make them easy on the operator. The E Series Hammers are designed to be field serviceable with common hand tools to keep them operating at peak performance.

Demolition and Sorting Grapple

The demolition and sorting grapple means considerable savings in terms of transportation and dumping costs as well as manpower, as you can now sort out demolition debris at source and transport it separately to recycling plants.

Simplified service and maintenance features save you time and money.

Ground-Level Service

The design and layout of the 340D2 L was made with the service technician in mind. Most service locations are easily accessible at ground level to allow service and maintenance to get completed quickly and efficiently.

Air Filter Compartment

The air filter features a double-element construction for superior cleaning efficiency. When the air cleaner plugs, a warning is displayed on the monitor screen inside the cab.

Pump Compartment

A service door on the right side of the upper structure allows ground-level access to the pump, pilot filter, and water separator with primary fuel filter.

Radiator Compartment

The left rear service door allows easy access to the engine radiator, oil cooler, air-to-air-aftercooler, water separator, second and third fuel filters, and fuel cooler. A reserve tank and drain cock are attached to the radiator for simplified maintenance.

Greasing Points

A concentrated remote greasing block on the boom delivers grease to hard-to-reach locations on the front.

Fan Guard

The engine radiator fan is completely enclosed by fine wire mesh, reducing the risk of an accident.

Diagnostics and Monitoring

The 340D2 L is equipped with S∙O∙SSM sampling ports and hydraulic test ports for the hydraulic system, engine oil, and for coolant.

Wiring Harness and Routing

Industrial-grade electrical wiring (SXL type) resists dust, water, and vibration during the entire life of the machine. The wires are color coded and numbered to facilitate troubleshooting in case of an issue. The navy-type electrical braiding over the wiring is flame resistant and properly secured by bolts, adding extra protection to the electrical system.

Cat dealer services help you operate longer with lower costs.

Product Support

You will find nearly all parts at our dealer parts counter. Cat dealers utilize a worldwide computer network to find in-stock parts to minimize machine downtime. You can also save money with our line of remanufactured components.

Machine Selection

Make detailed comparisons of the machines you are considering before you buy. What are the job requirements, machine attachments, and operating hours? What production is needed? Your Cat dealer can provide recommendations.

Maintenance Services

Repair option programs guarantee the cost of repairs up front. Condition monitoring services and diagnostic programs such as scheduled oil sampling, coolant sampling, and technical analysis help you avoid unscheduled repairs.

Customer Support Agreements

Cat dealers offer a variety of product support agreements and work with customers to develop a plan the best meets specific needs. These plans can cover the entire machine – including attachments – to help protect the customer’s investment.


Repair, rebuild, or replace? Your Cat dealer can help you evaluate the cost involved so you can make the right choice.


Standard Equipment
Engine Model Cat® C9 with ACERT™ Technology
Net Flywheel Power 208 kW
Bore 112 mm
Stroke 149 mm
Displacement 8.8 l
Emissions The C9 ACERT engine meets U.S. EPA Tier 3, EU Stage IIIA, Japan 2006 (Tier 3) equivalent, and China Nonroad III emission standards.
Engine Power - ISO 14396 209 kW
Maximum Altitude - Without Derate 2300 m
Net Power - SAE J1349/ISO 9249 208 kW
Note (1) All engine horsepower (hp) are metric.
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) Full engine net power up to 2300 m (7,546 ft) altitude (engine derating required above 2300 m [7,546 ft]).
Type Direct Injection with Turbocharger Aftercooler
Standard Equipment
Operating Weight 41500 kg
Note (1) *6.5 m (21'4") HD Reach Boom, R2.8DB (9'2") stick, 600 mm (24") Double Grouser track shoes, 6.25 mt (6.9 t) counterweight.
Operating Weight - Mass Boom** 41500 kg
Operating Weight - Reach Boom* 38900 kg
Note (2) **6.18 m (20'3") Mass Boom, M2.55 (8'4") mass stick, 600 mm (24") shoes, 8.45 mt (9.3 t) counterweight.