The 374D L Series Excavator has 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.
Engine Model | Cat C15 ACERT™ (ATAAC) |
Net Flywheel Power | — |
Operating Weight | — |
Engine Model | Cat C15 ACERT™ (ATAAC) |
Net Flywheel Power | — |
Net Power - ISO 9249 | — |
Net Power - SAE J1349 | — |
Net Power - EEC 80/1269 | — |
Bore | — |
Stroke | — |
Displacement | — |
Operating Weight | — |
Operating Weight - Long Undercarriage | — |
Standard with Long Undercarriage | — |
Optional for Long Undercarriage (1) | — |
Number of Shoes - Each Side - Long Undercarriage | 47 |
Number of Track Rollers - Each Side - Long Undercarriage | 8 |
Number of Carrier Rollers - Each Side | 3 |
Optional for Long Undercarriage (2) | — |
Swing Speed | — |
Swing Torque | — |
Maximum Travel Speed | — |
Maximum Drawbar Pull - Long Undercarriage | — |
Main System - Maximum Flow - Total | — |
Swing System - Maximum Flow | — |
Maximum Pressure - Equipment - Normal | — |
Maximum Pressure - Travel | — |
Maximum Pressure - Swing | — |
Pilot System - Maximum Flow | — |
Pilot System - Maximum Pressure | — |
Boom Cylinder - Bore | — |
Boom Cylinder - Stroke | — |
Stick Cylinder - Bore | — |
Stick Cylinder - Stroke | — |
WB2 Family Bucket Cylinder - Bore | — |
VB2 Family Bucket Cylinder - Stroke | — |
VB2 Family Bucket Cylinder - Bore | — |
WB2 Family Bucket Cylinder - Stroke | — |
Fuel Tank Capacity | — |
Cooling System | — |
Engine Oil | — |
Swing Drive - Each | — |
Final Drive - Each | — |
Hydraulic System - Including Tank | — |
Hydraulic Tank | — |
Performance | ANSI/SAE J1166 OCT98 |
Brakes | SAE J1026 APR90 |
Cab/FOGS | SAE J1356 FEB88 ISO 10262 |
The hydraulic system includes three pumps with an independent swing circuit. The hydraulic circuit utilizes a load-sensing system to ensure high hydraulic system efficiency and excellent productivity with little hydraulic loss. • Large, heavy-duty main pumps and a separate swing pump provide quick cycle times during multi-function operation.
Swing dampening valves reduce swing wag and produce smooth swing stops.
The spacious cab provides visibility and ergonomics. The monitor is a full-color graphical display to provide the operator with easy-to-read, comprehensive machine information. The cab provides a comfortable environment for the operator.
The hydraulic activation control lever deactivates hydraulic functions during engine start-up and prevents unintentional machine operation.
Utilizes thick steel tubing along the bottom perimeter of the cab, improving the resistance of fatigue and vibration. The cab structure allows the FOGS to be bolted directly to the cab, at the factory or as an attachment.
The cab shell is attached to the frame with viscous rubber cab mounts, which dampen vibrations and sound levels while enhancing operator comfort.
The Cat C15 engine with mechanically actuated electronic fuel injection (MEUI™) powers the 374D L. The C15 has ACERT Technology, a series of Caterpillar engineered innovations which provide advanced electronic control, precision fuel delivery and refined air management compliance.
The maximum power is 355 kW (476 hp), 18 percent more power than the 365C. The Power Management System (PMS) is also available to manage productivity and fuel economy.
The 374D L fuel maps provide additional power and performance with optimized fuel consumption through flexible power settings incorporated into ADEM™ controller.
The titanium-aluminum alloy rotor in the turbocharger improves reliability/durability and contributes to faster response of the turbocharger.
The 374D L uses a variable speed, hydraulically-driven fan for quieter operation and reduced fuel consumption during cooler ambient conditions.
A reversible fan option is offered as an attachment. The reverse function is operated through the monitor. By selecting this function, the fan rotates in the opposite direction for a preset time to help clean the cooling package for increased uptime and reduced service cost.
Three analog gauges, fuel level, hydraulic oil temperature and coolant temperature are displayed in this area.
The standard hand control pattern changer can be accessed through the monitor, to utilize either the standard excavator control pattern (SAE) or Backhoe Loader pattern (BHL).
The alternator is 24 volt with 75 amp capacity and is driven by a serpentine belt off the front pulley. A snorkel pulls cool, clean air from the outside for increased service life.
Product Link is standard on the 374D L. Product Link transmits diagnostic information from the machine back to Caterpillar, Cat dealers and customers.
The long variable gauge undercarriage is standard, providing a wide, stable base for operating, or a narrow gauge for reduced shipping width. The undercarriage gauge in working position has been increased by 160 mm (6.3 in) for improved stability.
The catwalk width has been increased by 110 mm (4.3 in) from the 365C L. Catwalks are provided on both sides of the skirt for easy access of the maintenance points. Slip resistant plates are used on the full length of the catwalks.
The 374D L swing bearing is a cross roller type, with 54 mm (2.13 in) diameter rollers. The cross rollers have a much greater contact area than ball bearing, providing increased stability and longer life.
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 provides increased rigidity and impact resistance.
The undercarriage supports the swing bearing and upper structure and is the link that transmits the reaction forces from digging to the ground. The strength of the undercarriage plays a major factor in machine stability and durability.
The track roller frame has been improved by installing a longer stroke recoil spring and lowering the front idler. The longer recoil spring improves durability and service life of the undercarriage while the offset idler increases the stability of the machine while working over the front.
Track links with the PPR2 are provided as standard on the 374D L. The PPR2 track link is designed to prevent looseness of the track pin in the track link and to reduce stress concentrations. The PPR2 system eliminates pin walking for increased service life.
The carrier rollers use a floating “Duo-Cone™” seal. The Duo-Cone seal protects the moving parts in the carrier roller from water and dirt, and makes lubrication maintenance-free.
374D L booms feature a large cross-section to improve strength and reduce weight. Baffle plates reinforce the boom interior for higher rigidity. Booms are designed for strength and maximum payload.
Sticks are made of high-tensile strength steel in a box-section design, making them strong and light. All sticks are reinforced with a thick baffle plate for added rigidity. The connection between stick and boom is made of forged steel, and a thick steel plate is used at the bucket connecting location for increased strength and rigidity at load-bearing points. An additional wear plate is added to the working side of the stick for protection. All mass sticks include additional wear bars on the working side to protect the structure during operation. There are four reach sticks and two mass sticks available to meet your application needs.
Bucket cylinder pin and idler to stick pin diameter for the reach boom have been increased. The pins have thick chrome plating for high wear resistance and long life.
Caterpillar offers a wide range of buckets, each designed and field tested to function as an integral part of your excavator. All Cat Buckets feature K Series™ GET (Ground Engaging Tools). Buckets are available in four levels of durability and are built to take full advantage of the machine's power.
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 are the most popular and a good “centerline” choice. This bucket style is a good starting point when application conditions are not known. Heavy Duty buckets are designed for a wide range of impact and abrasion conditions including mixed dirt, clay and rock.
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 for added protection.
Extreme Duty buckets are designed for very high abrasion conditions such as granite quarries. Corner shrouds have been added and side wear plates are larger for added protection.
The Cat combination of machine and tool provides a total solution for just about any application. Work tools can be mounted directly to the machine or a quick coupler can be added, making it quick and easy to release one work tool and pick up another.
Caterpillar offers two quick coupler styles: dedicated and pin grabber. Each allows quick tool changes.
Center-Lock is the Caterpillar pin grabber style coupler and features a patent pending locking system. A highly visible secondary lock clearly shows the operator when the coupler is engaged or disengaged from the bucket or work tool.
An extensive range of Cat Work Tools for the 374D L includes buckets, hammers, grapples, shears, multi-processors and rippers. Each are designed to optimize the versatility and performance of your machine. Cat Work Tools and couplers are ready to work in a variety of applications, such as site and structure demolition, debris clean-up, truck loading, scrap processing, breaking road surfaces and bed rock.
Caterpillar offers field-installed hydraulic kits designed to simplify the process of ordering and installing the right kit. Modular kit designs integrate Cat Work Tools with Cat Hydraulic Excavators. Every kit is easy to install. Hoses are pre-made, tubes are pre-bent and pre-painted and there are comprehensive instructions.
ACERT Technology is a differentiated technology that reduces emissions at the point of combustion. The technology capitalizes on proven Caterpillar leadership in three core engine systems: fuel, air and electronics.
Several serviceability elements are designed into the 374D L to limit fluid spillage while performing routine maintenance.
Ecology drains are provided for the fuel and hydraulic tanks, allowing fluids to be captured in a container when draining the tanks.
Long service intervals reduce maintenance costs. Engine oil, oil filter and fuel filters are at 500 hours.
Oil sample and pressure ports provide easy checking of machine condition and are standard on every machine.
The return filters or capsule filters for the hydraulic system are located beside the hydraulic tank. The filter elements are removable without spilling hydraulic oil.
Service points are centrally located with easy access to facilitate routine maintenance.
Pilot hydraulic system filter keeps contaminants from the pilot system and is located in the pump compartment.
A concentrated remote greasing block on the boom delivers grease to hard-to-reach locations.
Radial seal main air cleaner with precleaner has a double-layered filter element for more efficient filtration. No tools are required to change the element.
The water separator removes water from fuel, even when under pressure, and the water level can be monitored in the cab.
Cat dealers utilize a worldwide computer parts network to minimize machine downtime. Save money with Cat remanufactured components.
Make detailed comparisons of machines you are considering. What are job requirements and machine attachments? What production is needed? Your Cat dealer can provide recommendations.
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.
Cat dealers offer a variety of product support agreements and work with you to develop a plan to meet specific needs. These plans can cover the entire machine, including attachments, to help protect your investment.
Improving operating techniques can boost your profits. Your Cat dealer has videos, literature and other ideas to help you increase productivity, and Caterpillar offers certified operator training to help maximize the return on your investment.
Repair option programs guarantee repair costs up front. Diagnostic programs such as Scheduled Oil Sampling, Coolant Sampling and Technical Analysis help you avoid unscheduled repairs.
Repair, rebuild or replace? Your Cat dealer can help you evaluate the cost involved so you can make the right choice.
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