Cat® 340 Straight Boom Excavator

Machine Setup Simplification

    
• At the touch of fingertips and navigating user-friendly icons, the latest operator oriented User Interface (UI) maximizes uptime and gets crews to work without delay. From re-ordering work tool lists to creating new work tool combinations as needed, operators can quickly set up machines and easily access information.
    
• The interface allows operators to maintain accuracy and makes the most of every second of their shift. Adding the ability to input couplers and attachments into the system makes setting up work tool combinations highly efficient by significantly reducing calibration time. It also eliminates the need to measure up again when changing Cat® work tool attachments and makes it manageable for a single person to check and adjust for bucket wear.

Cat Grade 3D Ready

    
• The Cat Grade 3D Ready option includes all the hardware required for the Grade with 3D system, installed and tested from the factory. This option provides an easier upgrade path for customers who want to add Grade with 3D after their initial purchase. To activate, contact your Cat Dealer to purchase the required 3D software licenses. Licenses can be installed remotely or manually loaded onto the machine.

Cat Payload and Advanced Payload*   

    
• Cat Payload provides operators with on-the-go weighing to help them hit load targets and avoid overloading, underloading, or misloading materials. Advanced Payload is a system upgrade that offers expanded features and capabilities, including custom tags, daily totals, and electronic ticketing. Combine Payload with VisionLink™** to analyze jobsites and individual assets for remote management of production targets and key metrics.

*Payload technologies are not legal for trade.
**VisionLink subscription required. 

Not all features are available in all regions. Please check with your local Cat dealer for specific offering availability in your area. Build Number: 08D.

    
• Expect high fuel efficiency – more work per unit of fuel.
    
• Match the excavator to the job with three power modes – Power, Smart, and Eco. Smart mode automatically matches engine and hydraulic power to working conditions, providing max power when needed and reducing power when it isn’t to help save fuel.
    
• Auxiliary hydraulic options give you the versatility to use a wide range of Cat attachments, including the heaviest tools needed for demolition work.
    
• Don’t let the temperature stop you from working. This excavator has a high-ambient capability of 52° C (125° F) and cold start capability of –18° C (0° F).
    
• Advansys™ bucket tips increase production and lower costs with more tip life.
    
• The Cat PL161 attachment locator is a Bluetooth® device designed to let users know where their attachments are across all worksites, reduce the number of lost attachments, and plan for attachment maintenance and replacement. The PL161 integrates easily into VisionLink™ for full fleet management of machines and attachments from one smartphone or tablet dashboard to view location and tracking details.

 

    
• The latest operator oriented User Interface (UI) has been designed to maximize uptime by allowing operators to easily reorder work tool lists and quickly create new work tool combinations. It also eliminates the need to measure up again when changing Cat® work tool attachments and makes it manageable for a single person to check and adjust for bucket wear. 
    
• VisionLink™ provides actionable data insights for all assets – regardless of fleet size or equipment manufacturer.* Review equipment data from your desktop or mobile device to maximize uptime and optimize assets. Equipment management features provide up-to-date asset tracking of your entire fleet. You can track asset location, operating hours, fuel level, health issues, and overall utilization. Monitor equipment health with fault codes, fluid analysis, and inspection due dates. It's all about making informed, data-based decisions to help reduce operating costs. Productivity management features enable you to analyze overall job site performance. You'll be able to track tonnage moved, production targets, and payload, as well as Grade 3D and compaction data. These vital metrics help you to reduce costs and improve jobsite operational efficiency.
    
• Know the excavator’s exact position relative to GPS and GLONASS systems. The machine automatically compensates for excavator pitch and roll caused by sloping ground conditions.
    
• Remote Troubleshoot is a mobile application that allows your Cat dealer to perform diagnostic testing on your connected machine remotely to help ensure that issues are resolved quickly and with less downtime.
    
• Remote Flash is a mobile application that allows you to update onboard software without a technician being present, allowing you to initiate software updates when convenient, increasing your overall operating efficiency.
    
• Standard Cat Grade with 2D indicates depth and slope on the monitor with auditory alerts.
    
• Cat Payload onboard weighing helps you achieve precise load targets to improve your operating efficiency. Pick up a load of material – with either a bucket or grapple – and get a real-time weight estimate without even swinging.
    
• Combine Payload with VisionLink™ and remotely manage your production targets. The monitor’s USB port lets you download results from one shift all the way up to 30 days of work, so you can manage your progress without needing an internet connection or VisionLink subscription.
    
• The Cat® PL161 attachment locator allows you to track attachments across all worksites, reduce the number of lost attachments, and plan for attachment maintenance and replacement. The work tool recognition** feature automatically adjusts machine settings based on the selected tool.

* Data field availability can vary by equipment manufacturer.
** Recognition feature available on select excavator models. Consult your Cat dealer for details.

    
• The demolition cab comes with a deluxe heated seat and climate control.
    
• Get in and out of the cab easier with the tip-up left console.
    
• Control the excavator comfortably with easy-to-reach controls all located in front of you.
    
• Stow your gear with plenty of in-cab storage beneath and behind the seat, overhead, and in the consoles. A cup holder, document holder, bottle holder, and coat hook are also provided.
    
• Use the standard radio’s USB ports and Bluetooth® technology to connect personal devices and make hands-free calls.

    
• Start the engine with a push button; use a Bluetooth® key fob or the unique Operator ID function.
    
• Program your power mode and joystick preferences using operator ID; the excavator will remember them every time you go to work.
    
• Automatic hydraulic oil warmup gets you to work faster in cold temperatures and helps prolong the life of components.
    
• Navigate quickly on the standard high-resolution 254 mm (10 in) touchscreen monitor or with the aid of the jog dial control.
    
• Make moving the excavator much easier with Cat Stick Steer. Simply push a button and use one hand to travel and turn instead of both hands or feet on levers or pedals.
    
• Need more lift during your shift? Auto heavy lift gives you more power exactly when you need it for as long as you need it.
    
• Not sure how a function works or how to maintain the excavator? Always have the operator’s manual at your fingertips in the touchscreen monitor.

    
• Expect low maintenance cost with extended and synchronized service intervals.
    
• Check hydraulic system oil and easily drain fuel system water and fuel tank water from ground level.
    
• Track your excavator’s filter life and maintenance intervals via the in-cab monitor.
    
• Change all fuel filters at a synchronized 1,000 hours. Oil and fuel filters grouped and located on right-hand side of machine for easy maintenance.
    
• The air intake filter with pre-cleaner has high dust holding capacity.
    
• The hydraulic oil filter provides improved filtration performance; anti-drain valves keep oil clean when the filter is replaced.
    
• The high-efficiency hydraulic fan has an optional automatic reverse function to keep cores free from debris, eliminating the need for any operator interaction.
    
• S·O·S^SM ports simplify maintenance and allow for quick, easy extraction of fluid samples for analysis.

When you buy Cat® equipment, you get more than the machine. You’re also getting the support of a best-in-class dealer network backed by a range of flexible solutions, technology, tools, and more.

When you work with your local Cat dealer, you'll be supported by one of the industry's most extensive, knowledgeable dealer networks. Comprised of 160 independent dealers, the Cat Dealer Network serves 197 countries with thousands of branches around the globe.

It’s more uptime, cost-saving service and repair options, quality parts, and precision components. It’s all about support built around your success.

Ask your Cat dealer today about the many services that help you do your work your way.

    
• The importance of buying genuine Cat parts.

    
1. Designed by Caterpillar engineers to the exact specs of your ​Cat equipment.
    
2. Rigorously tested to ensure maximum performance​.
    
3. Covered by a 12-month warranty.

    
• Cat Inspect – Work made easy.

    
1. Record real-time inspection data.
    
2. Simplify inspections and reporting.
    
3. Easy-to-read results all in one place.

    
• Cat Ground Engaging Tools (GET) – Longer wear. More work.

    
1. GET for every machine and application.
    
2. Tools to extend life and track GET lifecycles.
    
3. Bucket rebuild options for optimal performance.

    
• Cat Hydraulic Components – Durability quality you can work with.

    
1. Flexible options – New, reman, exchange, rebuild or repair.
    
2. Expert diagnostics, testing, and contamination control.
    
3. Buy in-store, online, or on your mobile device.

    
• Cat Hose Service – Fast, safe—to get you back to work.

    
1. Hoses and couplings for most makes and models.
    
2. OEM database ensures an exact fit.
    
3. Industry-best tooling, training, and assembly standards.

    
• Cat Certified Rebuild – An investment that works. Again, and again.

    
1. Better-than-when-new performance at a fraction of the cost.
    
2. Performance, safety, and technology upgrades and enhancements.
    
3. Full warranty coverage, Customer Value Agreement, and special financing.

    
• Cat Remote Services – Work done in a flash.

    
1. Cut downtime for updates and service.
    
2. Install the latest machine software remotely.
    
3. Troubleshoot issues before a technician arrives.

24/7 Expert Support
Get industry-leading support for any question or problem you have 24 hours a day, 7 days a week, 365 days a year.

Learn more at https://parts.cat.com/

    
• The front windshield and top hatch are made with EN 356 P5A glazing for enhanced impact resistance.
    
• The standard ROPS cab meets ISO 12117-2:2008 requirements.
    
• Operator Protective Guards (OPG) enhance overhead safety.
    
• A travel direction indicator helps operators know which way to activate the travel levers.
    
• Enjoy great visibility with the help of narrow cab pillars, large windows, the standard parallel roof wiper and washer, and a flat engine hood design.
    
• A ground-level shutoff switch stops all fuel to the engine when activated and shuts down the machine.
    
• Rearview and sideview cameras are standard. Upgrade to 360° visibility and you’ll easily visualize objects and personnel around the excavator in a single view.
    
• Serrated steps and anti-skid punch plate on the service platform help prevent slipping.
    
• Make service work easier and safer with optional inspection lighting. With the flip of a switch, lights will illuminate the engine, pump, battery, and radiator compartments to enhance visibility.
    
• Standard 2D E-Fence integrated right out of the factory prevents the excavator from moving outside of operator-defined set points.

Tackle your jobs with a complete Cat® solution. Cat attachments are not just accessories – they are essential tools that define what your machine can do. When you pair a Cat excavator with Cat attachments, you unlock a fully integrated system built for performance, durability, and efficiency. Whether you are clearing land, breaking concrete, or compacting soil, the right attachment transforms your excavator into a powerful, multi-purpose tool ready for any challenge. Depending on your project or application, you could benefit from excavator attachments such as

    
• Buckets: Handle everything from digging and grading to cleanup and debris removal with your excavator. Caterpillar® offers general duty, heavy duty, extreme duty, and severe duty buckets, as well as specialized designs for ditch cleaning, rock, and finishing work. Reinforced edges and wear-resistant materials ensure long-lasting performance in tough conditions.
    
• Couplers (HEX): Cat® couplers for excavators enable fast, secure attachment changes, without the need to leave the cab. From Pin Grabbers to hydraulic quick connect options, couplers help reduce downtime, boost jobsite efficiency and promote versatility by allowing multiple machines to share a common attachment inventory.
    
• Hammers: Break concrete, rock, and steel with up to 1,000 blows per minute. Built for high-production demolition, quarrying, and construction, they offer powerful impact energy and consistent performance. Their durability and low-maintenance design make them essential for demanding breaking applications.
    
• Multi-Processors: A versatile tool for demolition, equipped with interchangeable jaws to handle concrete, steel, and rebar. Multi-Processors combine cutting, crushing and pulverizing capabilities in one attachment. Their modular design maximizes efficiency across a range of job site demands.
    
• Demolition and Sorting Grapples: Tackle larger debris or precisely sort materials into piles. These grapples are engineered for accuracy in demolition and material sorting, handling concrete, rebar, wood, and mixed debris. High clamping force and agile movement make them ideal for primary and secondary demolition and recycling operations
    
• Scrap and Demolition Shears: Rotating shears provide precision cutting for metal structures, pipes, rebar, and scrap, making them ideal for demolition and recycling. Their powerful jaws and fast cycle times ensure clean cuts and high productivity. Built for durability, they excel in heavy-duty steel processing.
    
• Pulverizers: Built to crush concrete and separate rebar during demolition and recycling. With high crushing force and fast cycle times, pulverizers efficiently reduce material for easier handling. Primary models feature 360° bidirectional rotation and tackle structure teardown, while secondary models have a fixed jaw design and process debris after demolition.
    
• Compactors (Vibratory Plate): Compact soil, sand, gravel and asphalt quickly and efficiently to create a stable foundation. Vibratory plate compactors deliver high-impact force and even coverage, reducing air pockets and improving surface integrity for trenching, roadwork, and patching.
    
• Orange Peel Grapples: Built for scrap and bulk material handling, Orange Peel Grapples excel with irregular, heavy loads like metal, rock, and waste. Their hydraulic tines provide superior grip and penetration. High-capacity and continuous rotation are perfect for scrap yards and transfer stations. Caterpillar® offers these grapples with a choice of different shell designs and tine options suited to various applications.
    
• Clamshell Grapples: Perfect for bulk material handling, dredging, and excavation of loose or semi-compacted materials like sand, gravel, and debris. Their dual-opening jaws allow for precise loading and unloading. High-capacity and controlled operation make them ideal for ports, recycling, and heavy civil projects.
    
• Rotary Cutters: Get accurate, precise work with less noise and vibration. Cat® Rotary Cutters deliver high torque and precision for a range of applications: demolition, grinding, profiling, trenching, tunneling, and quarrying. Specifically designed for excavator-mounted use to handle heavy-duty materials like concrete, rock, and dense brush with ease.

Cat® attachments are engineered to maximize your excavator’s productivity, helping you get more work done with greater efficiency and confidence. Choosing the right attachment is not just about compatibility, it is about unlocking your machine’s full potential while avoiding equipment damage or safety risks. Connect with your Cat Dealer to find the optimal attachments for your specific machine and application needs.

Not all attachments are available in all regions. Contact your Cat Dealer for details.

    
• The Cat® C9.3B engine meets U.S. EPA Tier 4 Final, EU Stage V, and Japan 2014 emission standards.
    
• Cat diesel engines are required to use ULSD (ultra-low sulfur diesel fuel with 15 ppm of sulfur or less) and are compatible* with ULSD blended with the following lower-carbon intensity fuels** up to: 20% biodiesel FAME (fatty acid methyl ester)*** or 100% renewable diesel, HVO (hydrotreated vegetable oil) and GTL (gas-to-liquid) fuels. Refer to guidelines for successful application. Please consult your Cat dealer or “Caterpillar Machine Fluids Recommendations” (SEBU6250) for details.
    
• Auto Engine Speed Control helps reduce unnecessary fuel burn and greenhouse gas emissions by allowing the engine to automatically go into idle mode when the machine is not working.
    
• Cat Grade technologies combine advanced guidance with optional automated machine control helping you reach grading targets while reducing fuel burn and greenhouse gas emissions by improving efficiency, job site productivity, and accuracy.
    
• Cat® Payload for excavators provides on-the-go material weighing which helps reduce fuel burn by improving loading efficiency, job site productivity, and eliminating trips to the scale.
    
• Cat® 2D E-fence keeps the front linkage within a predefined work area to avoid hazards such as traffic - not only helping keep personnel safe but also helps you avoid repairs, downtime, and costly job site fines.
    
• Don't waste fuel idling. Cat VisionLink™ online fleet monitoring helps you manage idle time and reduce fuel burn and greenhouse gas emissions.
    
• Extended maintenance intervals not only reduce downtime but decrease the amount of fluid and filters that are replaced over the life of the machine.

*While Caterpillar engines are compatible with these alternative fuels, some regions may not allow their use. 
**Tailpipe greenhouse gas emissions from lower-carbon intensity fuels are essentially the same as traditional fuels. 
***Engines with no aftertreatment devices are compatible with higher blends, up to 100% biodiesel (for use of  blends higher than 20% biodiesel, consult your Cat dealer).