Engine Model Cat® C7.1 ACERT™
Net Flywheel Power 228.0 hp
Bore 4.13 in
Stroke 5.31 in
Displacement 428.0 in3
Gross Power - SAE J1995 241.0 hp
Net Power - SAE J1349/ISO 9249 228.0 hp
Operating Weight 68958.0 lb
Maximum Operating Weight 68958.0 lb
Maximum Operating Weight** 68958.0 lb
Minimum Operating Weight 64060.0 lb
Minimum Operating Weight* 64060.0 lb
Maximum Drawbar Pull 55977.0 lb
Maximum Travel Speed 3.2 mph
Pilot System - Maximum Flow 6.1 gal/min
Pilot System - Maximum Pressure 569.0 psi
Boom Cylinder - Bore 6.0 in
Boom Cylinder - Stroke 55.0 in
Stick Cylinder - Bore 6.0 in
Stick Cylinder - Stroke 65.0 in
DB Bucket Cylinder - Bore 5.0 in
DB Bucket Cylinder - Stroke 46.0 in
Main System - Maximum Flow (Total) 130.0 gal/min
Maximum Pressure - Equipment - Heavy Lift 5511.0 psi
Maximum Pressure - Equipment - Normal 5076.0 psi
Maximum Pressure - Swing 3989.0 psi
Maximum Pressure - Travel 5076.0 psi
TB Bucket Cylinder - Bore 6.0 in
TB Bucket Cylinder - Stroke 45.0 in
Service Refill Capacities
Fuel Tank Capacity 137.37 gal
Cooling System 11.62 gal
Final Drive (each) 1.59 gal
Hydraulic System (including tank) 81.89 gal
Hydraulic Tank 40.95 gal
Engine Oil (with filter) 5.94 gal
Swing Drive (each) 2.64 gal
ISO 6395 - Spectator Noise 105.0 dB(A)
ISO 6396 - Operator Noise (Closed) 72.0 dB(A)
ISO 6396 - Operator Noise (Open) 77.0 dB(A)
Brakes ISO 10265 2008
Cab/FOGS ISO 10262 1998
Swing Speed 9.8 RPM
Swing Torque 60628.0 lb ft
Number of Shoes (each side) - Long Undercarriage 50
Number of Track Rollers (each side) - Long Undercarriage 9
Number of Carrier Rollers (each side) - Long Undercarriage 2
Reduced emissions, economical and reliable performance
Cat C7.1 ACERT Engine
The Cat C7.1 ACERT engine delivers more horsepower using less fuel than the previous series engine.Emissions Solution
The C7.1 ACERT engine is equipped to meet U.S. Tier 4 Interim emission standards. Driven by customer input, Caterpillar’s aftertreatment regeneration solution ensures the machine works with no operator intervention needed. The machine comes with two modes of regeneration: automatic and manual. In automatic mode, the machine starts the regeneration process once the filtering system reaches a certain level and conditions are optimal. The system will not interrupt the work process and can regenerate during machine operation. Manual mode enables the operator to override the automatic mode. With a touch of a button inside the cab, this mode allows the operator to move the machine from flammable or heat-restricted areas before initiating the regeneration process.Biodiesel-Ready Fuel System
The C7.1 ACERT engine is equipped with an electronic-controlled high-pressure fuel system that includes an electric priming pump and three-layer fuel hose to allow the use of biodiesel (meeting ASTM 6751 or EN 14214) up to B20 (biodiesel 20% mixture).Cooling System
The cooling system features side-by-side-mounted hydraulic oil cooler and engine radiator with a tilt-out condenser and air-to-air aftercooler for easy cleaning. The fan automatically adjusts to ambient temperatures to help reduce fuel consumption and noise.Speed and Power Control
The E Series features speed control to maintain a constant speed - regardless of load - to improve fuel economy. Three different power modes are offered: high power, standard power, and economy power. The operator can easily change between modes through the monitor or console switch to meet the needs for the job at hand - all to help manage and conserve fuel.
Comfort and convenience to keep people productive
The seat range includes air suspension, heated, and air cooled options. Each option includes a reclining back, upper and lower seat slide adjustments, and height and tilt angle adjustments to meet operator needs for comfort and productivity.Controls
The right and left joystick consoles can be adjusted to meet individual preferences, improving operator comfort and productivity during the course of a day. With the touch of the button, one-touch idle reduces engine speed to help save fuel; touch it again or move the joystick and the machine returns to normal operating level. The heavy lift mode increases machine system pressure to improve lift - a nice benefit in certain situations. Heavy lift mode also reduces engine speed and pump flow in order to improve controllability.Monitor
The 329E is equipped with a new LCD (Liquid Crystal Display) monitor that’s 40% bigger and has higher resolution than the previous model’s monitor. In addition to an improved keypad and added functionality, it’s programmable to provide information in a choice of 42 languages to support today’s diverse workforce. An “Engine Shutdown Setting” accessible through the monitor allows owners and operators to specify how long the machine should idle before shutting down the engine, which can save significant amounts of fuel. The image of the rearview camera is displayed directly on the monitor. Up to two different camera images can be displayed on the screen at the same time.MP3-Ready Radio and Power Supply
The standard radio is equipped with a new auxiliary audio port for MP3 players. Two 12-volt power supply sockets are located near key storage areas for charging electronic devices.Storage
Storage spaces are located in the front, rear, and side consoles. Space near the auxiliary power supply holds MP3 players and cell phones. The drink holder accommodates large mugs with handles, and a shelf behind the seat stores large lunch or toolboxes.Automatic Climate Control
The climate control system features five air outlets with positive filtered ventilation, which makes working in the heat and cold much more pleasant for operators.
Power to move more dirt, rock, and debris with speed and precision
Hydraulic horsepower is the actual machine power available to do work through implements and work tools. It’s much more than just the engine power under the hood - it’s a core strength that differentiates Cat machines from other brands.Main Control Valve and Auxiliary Valves
The 329E uses a high-pressure system to tackle the toughest of work in short order. The machine features a simple, highly efficient back-to-back main control valve to improve fuel consumption and reliability. Also, shortened spool lengths and a built‑in drift reduction valve have been added for greater controllability.Return Filter
The return filter is a capsule-type design with a cartridge inside. The Cat cartridge features a handle to help remove and change oil without spillage or contamination. A sensor attached to the filter warns the operator if it is full or exceeds a certain pressure level.Swing Priority Circuit
The swing priority circuit on the 329E uses an electric valve that’s operated by the machine’s Electronic Control Module (ECM). Compared to using a hydraulic valve, an electric valve allows for more finely tuned control, which is critical during material loading.Electric Boom Regeneration Valve
An electric boom regeneration valve minimizes pump flow when the boom lowers down, which helps improve fuel efficiency. This unique Cat feature is optimized for any dial speed setting being used by the operator, which results in less pressure loss for higher controllability and more productivity with lower operating costs.Stick Regeneration Circuit
The 329E regenerates the flow of oil from the rod end to the head end of the stick cylinder during low-load, stick-in operation - an approach that saves energy and expense.
Structures & Undercarriage
Built to work in rugged environments
The upper frame (1) includes new reinforced mountings to support the Roll-Over Protective Structure (ROPS) cab; the lower frame is reinforced to increase component durability.Undercarriage
Fixed long undercarriage systems are available to support various work applications. Heavy-duty track rollers, precision-forged carrier rollers (2), press-fit pin master joints, and enhanced track shoe bolts improve durability and reduce the risk of machine downtime and the need and cost to replace components. A segmented three-piece guiding guard is now offered to help maintain track alignment and improve performance in multiple applications. A redesigned motor housing prevents mud packing and debris buildup around seals.Counterweights
Two counterweights (3) are available: 5.8 mt (6.3 t) and 6.75 mt (7.4 t) options. The counterweight removal system comes with new integrated links that enable easy removal for maintenance or shipping.
Made for high stress and long service life
Booms and Sticks
The 329E is offered with a range of booms and sticks (see list below). Each is built with internal baffle plates for added durability, and each undergoes ultrasound inspection to ensure weld quality and reliability. Large box-section structures with thick, multi-plate fabrications, castings, and forgings are used in high-stress areas such as the boom nose, boom foot, boom cylinder, and stick foot to improve durability. The boom nose pin retention method is a durable captured flag design. Boom durability is improved with a number of plate thickness changes. Also, the front linkage pins’ inner bearing surfaces are welded, and a self-lubricated bearing is used to extend service intervals and increase uptime.Selections
There are three basic boom options: HD, SLR, and ME. Sticks match the boom descriptions and applications below:HD = Heavy Duty
This type of boom is best used for reach applications where conditions are optimal such as excavating basements, trenching for utility lines, and sewer applications.SLR = Super Long Reach
This configuration offers reaches to 60 feet. It is well suited for ditch cleaning applications.ME = Mass Excavation
Mass is best used for quarry, high-volume loading, and other demanding applications. Mass fronts provide higher digging forces due to the geometry of the boom and stick relationship. Bucket linkage and cylinders are also built for greater durability.
You can dig, hammer, rip, and cut with confidence.
Couplers: Quick Tool Changes
Imagine the productivity you’ll achieve with a quick coupler. Combine a robust coupler with a common work tool inventory that can be shared between same size machines and you’ll get performance and flexibility on every job. The Cat Center-Lock™ pin grabber coupler features a patented locking system and highly visible lock. You can clearly see when the coupler is engaged or disengaged from the attachment.Work Tools: Cut, Crush, Pulverize and Load
No matter your specialty, Caterpillar provides tools that are perfectly matched to get the most out of your Cat machine - quickly and efficiently. Auxiliary hydraulic circuits are available to integrate any Cat work tool with your 329E.Buckets: Dig, Move, Load
Cat buckets are designed to fill efficiently so you notice a fast, smooth cycle, which means high productivity each time you dig. Wear characteristics of general-duty, heavy-duty, and severe-duty buckets give you solid performance in a wide variety of material abrasions. Ditch cleaning and other specialty buckets are available when needed.
Solutions that make work easier and more efficient
Cat Grade Control Depth and Slope
This optional system combines traditional machine control and guidance with standard factory-installed and calibrated components, making the system ready to go to work the moment it leaves the factory. The system utilizes internal front linkage sensors - well protected from the harsh working environment - to give operators real-time bucket tip position information through the cab monitor (1), which minimizes the need and cost for traditional grade checking and improves job site safety. It also helps the operator complete jobs in fewer cycles, which means less fuel use. Cat dealers can upgrade the system to full three-dimensional control by adding proven Cat AccuGrade™ positioning technologies, including GPS and Universal Total Station (UTS).Cat Product Link™*
This deeply integrated machine monitoring system (2 and 3) is designed to help customers improve their overall fleet management effectiveness. Events and diagnostic codes as well as hours, fuel consumption, idle time, machine location, and other detailed information are transmitted to a secure web based application called VisionLink®, which uses powerful tools to communicate to users and dealers. *Product Link licensing not available in all areas. Please consult your Cat dealer for availability.
Fast, easy and safe access built in
Wide service doors (1) and a new hood design (2) provide easy access to the engine and cooling compartments. Both doors and hood feature enhanced hardware and a new screen design to help minimize debris entry.Compartments
The radiator, pump, and air cleaner (3) compartments provide easy access to major components. The fresh air filter (4) is located on the side of the cab to make it easier to reach and replace as needed.Other Service Improvements
The water separator with water level sensor has a primary fuel filter element located in the pump compartment near ground level; the electric priming pump is mounted on the primary filter base and is easier to service than traditional hand-priming pumps. The fuel tank features a remote drain cock located in the pump compartment to make it easy to remove water and sediment during maintenance. The engine oil check gauge and oil filter are situated in front of the engine compartment for easy access, and a uniquely designed drain cock helps prevent spills. An optional QuickEvac™ system makes changing engine and hydraulic oil easy to complete in minutes rather than hours.
Features to help protect people
The ROPS-certified cab (1) allows a Falling Object Guard Structure (FOGS) to be bolted directly to it to help protect operators.Sound Proofing
Improved sealing and roof lining lower noise levels inside the cab significantly during machine operation.Anti-Skid Plates
The surface of the upper structure and the top of the storage box area are covered with anti-skid plates to help prevent service personnel and operators from slipping during maintenance.Steps, Hand and Guard Rails
Steps on the track frame and storage box (2) along with extended hand and guard rails (3) to the upper deck enable operators to more securely work on the machine.Time Delay Cab and Boom Lights
For a predetermined amount of time after the engine start key has been turned to the “OFF” position, lights will be illuminated to enhance visibility. The time delay can vary from 0 to 90 seconds, which can be set through the monitor.High Intensity Discharge (HID) Lights
Cab lights operate on a time delay for enhanced safety; lights can be upgraded to HID for greater night time visibility.Visibility - Windows
Increased glass coverage enhances visibility while meeting the latest ROPS regulations. The 70/30 split configuration features an upper window equipped with handles on the top and both sides so the operator can easily slide it to store in the ceiling. The lower window is removable and can be stored on the left wall of the cab shell. The large skylight provides enhanced overhead visibility, excellent natural lighting, and good ventilation. The skylight can be opened completely to become an emergency exit.Monitor Warning System
The monitor is equipped with a buzzer that can warn operators of critical events like “Engine Oil Pressure Decrease,” “Coolant Temperature High,” or “Hydraulic Oil Temperature High” so they can take any necessary action.Rearview Camera
An optional rearview camera (4) housed in the counterweight area is available as an attachment. The image projects through the cab monitor to give the operator a clear picture of what’s behind the machine.
Complete Customer Care
Service you can count on
Cat dealers utilize a worldwide parts network to maximize your machines’ uptime. Plus they can help you save money with Cat remanufactured components.Machine Selection
What are the job requirements and machine attachments? What production is needed? Your Cat dealer can provide recommendations to help you make the right machine choices.Purchase
Consider financing options and day-to-day operating costs. Look at dealer services that can be included in the machine’s cost to yield lower owning and operating costs over time.Customer Support Agreements
Cat dealers offer a variety of customer support agreements and work with you to develop a plan to meet your specific needs. These plans can cover the entire machine, including attachments, to help protect your investment.Operation
Improving operating techniques can boost your profits. Your Cat dealer has videos, literature, and other ideas to help you increase productivity. Caterpillar also offers simulators and certified operator training to help maximize the return on your investment.Replacement
Repair, rebuild, or replace? Your Cat dealer can help you evaluate the cost involved so you can make the best choice for your business.
Generations ahead in every way
- The C7.1 ACERT engine, along with the Cat Clean Emissions Module (CEM), meets U.S. Tier 4 Interim emission standards.
- The 329E performs the same amount of work while burning 3% less fuel than the previous D Series model, which means more efficiency, less resources consumed, and fewer CO2 emissions.
- The 329E has the flexibility of running on either ultra-low-sulfur diesel (ULSD) fuel with 15 ppm of sulfur or less or biodiesel (B20) fuel blended with ULSD.
- A ground-level overfill indicator rises when the tank is full to help the operator avoid spilling.
- The QuickEvac option ensures fast, easy, and secure changing of engine and hydraulic oil.
- The 329E is built to be rebuilt with major structures and components capable of being remanufactured to reduce waste and replacement costs.
- An eco-friendly engine oil filter eliminates the need for painted metal cans and aluminum top plates. The cartridge-style spin-on housing enables the internal filter to be separated and replaced; the used internal element can be incinerated to help reduce waste.
- The 329E is an efficient, productive machine that’s designed to conserve our natural resources for generations ahead.