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Frontless Excavators

Caterpillar serves all regions of the world so we build many different configurations of hydraulic excavators. Your Cat® dealer has exact machine specifications available in your area to help you choose what will best meet your needs.

340D2 L Hydraulic Excavator

The 340D2 L OEM 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 OEM 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 engine combined with a smooth, precise, hydraulic system. This highly efficient design minimizes losses and permits fast hydraulic cycle times.

Product Details

Key Features

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 long, heavy-duty, high-wide (HDHW) undercarriage, the machine can take full advantage of its fast implements. This unique 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 engine that meets EU Stage II regulations combined with the highly efficient hydraulic system delivers 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.


Built for power, reliability and economy.

Driving Unprecedented Performance with Lower Fuel Consumption

Emission Standards

The Cat C9 engine has been designed to meet EU Stage II emission standards. The engine incorporates proven robust components and precision manufacturing you can count on for reliable and efficient operation.

Filtration System

The C9 engine features an improved filtration system to ensure reliability even with less-than-quality fuel. Service intervals have been extended and the number of filters reduced to maximize your profit potential.

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 engine is built to run quietly with limited vibration, which contributes to improving your comfort.

Operator Station

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 viewing area and offer continuous and intermittent modes.


The monitor is a full-color Liquid Crystal Display (LCD) that can be adjusted to minimize glare, and it has the capability of displaying information in 28 languages to meet the needs of today’s diverse work force.


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

Hydraulic Activation Control Lever

With the hydraulic activation lever in the neutral position, all front linkage, swing, and travel functions are isolated.

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 pressure tools.


Heavy duty structural components and high wide 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.

Long, Heavy-Duty, High-Wide (HDHW) Undercarriage

The HDHW undercarriage maximizes stability and lift capacity over the front and side, compared to a standard long undercarriage. The higher ground clearance is ideal in rocky environments, bringing the carbody and upperframe in safer high position. The durable X-shaped box-section carbody absorbs stresses, and provides excellent resistance to torsional bending. Robot-welded track roller frames are press-formed, pentagonal units to deliver exceptional strength and service life.

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 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.


The 6.25 mt and 8.45 mt counterweights are bolted directly to the main frame for extra rigidity. The 8.45 mt HD counterweight makes a better choice for heavy lifting applications that require additional machine stability, especially with Mass Excavation front parts.

Work Tools

Dig, hammer, rip, and cut with confidence.

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.

Service and Maintenance

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.

Anti-Skid Plate

Anti-skid plate covers top of storage box and upper structure to prevent slipping during maintenance.

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.

Complete Customer Support

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.
    •  Diesel engine Cat C9
    •  2300 m altitude capability with no deration
    •  80 amp alternator
    •  Air intake heater
    •  Tier 2 emission package
    •  High power version with Power Management Mode
    •  Waved fin radiator with enough space for cleaning operation
    •  Radial seal air filter
    •  Automatic engine speed control
    •  Water separator in fuel line
    •  Two (2) micron fuel filters
    •  Two speed travel
  • CAB
    •  Joystick without tool control system
    •  OSF cab with FOGS boss and metal hatch
    •  Seat with head rest, mechanical suspension with seat belt (51 mm/2 in)
    •  Sun screen
    •  Floor mat
    •  Bi-level air conditioner (auto) with defroster (pressurized function)
    •  Windshield washer
    •  Cab mirrors
    •  Circuit breaker
    •  Adopt Cat data link with capability of using E.T.
    •  Hydraulic main pump
    •  Capability of installing stackable valves for main valve (maximum two [2] valves)
    •  Capability of installing additional auxiliary pump and circuit
    •  Capability of installing boom lowering control device and stick lowering check valve
    •  Capability of installing Cat Bio hydraulic oil
    •  Automatic swing parking brake
    •  High performance hydraulic return filter
    •  Fine swing control
    •  Boom drift reducing valve*
    •  Stick drift reducing valve*
    •  Reverse swing damping valve*
    •  Cat one key security system
    •  Door locks and cap locks
    •  Signaling/warning horn
    •  Mirrors, rearview (frame – right, cab – left)
    •  Secondary engine shutoff switch
    •  Capability to electrically connect a beacon
    •  Light, storage box mounted – one (1)
  • Light, storage box mounted – one (1)
      •  Grease Lubricated Track GLT2, resin seal
      •  Idler and center section track guiding guards
      •  Towing eye on baseframe
    • Grease Lubricated Track GLT2, resin seal
      • Idler and center section track guiding guards
        • Towing eye on baseframe
          • GUARDS
            •  Heavy duty bottom guard
            •  FOGS (bolt-on)
            •  Full length track guiding guards
          • HYDRAULICS
            •  Hammer 2P, one way circuit tool control
          • Hammer 2P, one way circuit tool control
            • CAB
              •  12V-10A power supply with two (2) cigar lighter type sockets
              •  Working lights
            • UNDERCARRIAGE
              •  Tracks: – 600 mm (24") double grouser shoe – 700 mm (28") triple grouser shoe
            • Tracks: – 600 mm (24") double grouser shoe – 700 mm (28") triple grouser shoe
              • GUARDS
                •  Full length track guiding guard (two pieces)
                •  Starting kit, cold weather (–32° C/–25.6° F)
                •  Air prefilter
                •  Electric refueling pump with auto shut off
              • Starting kit, cold weather (–32° C/–25.6° F)
                • Air prefilter
                  • Electric refueling pump with auto shut off
                    • COUNTERWEIGHT
                      •  6.25 mt counterweight with lifting eyes
                      •  8.45 mt counterweight with lifting eye
                    • INTEGRATED TECHNOLOGIES
                      •  Product Link™
                    • Product Link™
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