Operator Station
The ergonomically designed operator station is spacious, quiet, and comfortable, assuring high productivity during a long work day. All switches are located on the right-hand console for convenient access.
Monitor
The monitor is a full-color Liquid Crystal Display (LCD) that can be adjusted to minimize sun glare. It has the capability of displaying information in 28 languages.
Joystick Control
Low-effort pilot-operated joystick controls are designed to match your natural wrist and arm position for maximum comfort and minimum fatigue.
Seat
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 operator needs for comfort and productivity.
Console
The right and left joystick console can be adjusted to meet individual preferences, improving operator comfort and productivity during the course of a day.
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 Exterior
The cab shell features thick steel tubing along the bottom perimeter of the cab, improving resistance to fatigue and vibration.
Cab Structure and Mounts
The cab shell is attached to the frame with viscous rubber cab mounts, which dampen vibrations and sound levels while enhancing operator comfort. Thick steel tubing along the bottom perimeter of the cab, improves resistance to fatigue and vibration.
Windows
To maximize visibility, all glass is affixed directly to the cab, eliminating window frames. The upper front windshield opens, closes, and stores on the roof above the operator with a one-touch action release system.
Wipers
Pillar-mounted wipers increase your operator’s viewing area and offer continuous and intermittent modes.
Engine
The Cat C7.1 engine has been designed to meet U.S. EPA Tier 2, EU Stage II and China Tier 2 emission regulations. The engine is powerful, strong, and durable to meet all of your application needs. An ECO-mode feature helps to reduce fuel consumption by up to 15 percent for fuel-conscious customers. The C7.1 engines incorporate proven, robust components and precision manufacturing you can count on for reliable and efficient operation. This is a proven engine that boasts improved reliability, as it’s less sensitive to low quality fuel and also delivers better fuel consumption.
Automatic Engine Speed Control
Automatic engine speed control is activated during no-load or light-load conditions which reduces engine speed to minimize fuel consumption.
Air Cleaner
The radial seal air filter features a double-layered filter core for more efficient filtration and is located in a compartment behind the cab. A warning is displayed on the monitor when dust accumulates above a preset level.
Filtration System
The C7.1 engine features an improved filtration system to ensure good reliability to fuel injection system components. Intervals have been extended and the number of filters reduced to maximize your profit potential.
Low Sound, Low Vibration
The Cat C7.1 improves operator comfort by reducing sound and vibration.
Hydraulics
Hydraulic System
Hydraulic system pressure is 35 000 kPa (5,076 psi) with 202 L/min (53.36 gal/min) flow from each of the two hydraulic pumps for increased digging performance and productivity.
Pilot System
An independent pilot pump enables smooth precise control for the front linkage, swing, and travel operations.
Component Layout
The 320D/D L Series 2 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, which reduce 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, multi-processors, and vibratory plate compactors.
Boom and Stick Regeneration Circuit
Boom and stick regeneration circuits save energy during boom-down and stick-in operation which increases efficiency, reduces cycle times and pressure loss for higher productivity, lower operating costs, and increased fuel efficiency.
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.
Undercarriage and Structures
Carbody Design and Track Roller Frames
The 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.
Main Frame
The rugged main frame is extremely durable and designed for the toughest applications.
Undercarriage
Durable Cat undercarriage absorbs stresses and provides excellent stability.
Rollers and Idlers
Sealed and lubricated track rollers, carrier rollers, and idlers provide excellent service life to keep your machine in the field and working longer.
Standard Undercarriage
The standard undercarriage is well suited for applications that require frequent repositioning of the machine, restricted work space, or uneven rocky terrain.
Long Undercarriage
The long (L) undercarriage maximizes stability and lift capacity. This long, wide, and sturdy undercarriage offers a very stable work platform.
Front Linkage
Cat front linkages are designed for maximum versatility, productivity, and high efficiency whatever the application.
Heavy-Duty Front Linkage
The 5.7 m (18'8") heavy-duty (HD) reach boom is reinforced to be used in the severest applications and provide maximum digging capability. They are 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. The HD reach boom has two stick options available to meet all your application requirements. The 2.9 m (9'6") stick is the most versatile option and a very good fit for truck loading and trenching applications where you need additional working range. The 2.5 m (8'2") stick is ideally suited to applications requiring larger bucket sizes. It maximizes digging forces and enables you to get your jobs completed faster.
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 5.2 m (17'1") mass excavation boom is reinforced with a geometry designed to maximize machine productivity. It also incorporates a large cross-section and internal baffle plates for long life and durability. The 2.4 m (7'10") stick was designed mainly for large earth moving and is made of high-tensile-strength steel in a box section to make it strong and durable.
Super Long Reach
This super long reach option provides up to 15.2 m (49'10") of reach and is designed for light-duty applications requiring an extra-large working envelope.
Service and Maintenance
Ground-Level Service
The design and layout of the 320D/D L Series 2 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 filter plugs, a warning is displayed on the cab monitor. Maintenance free batteries are standard along with a battery disconnect switch.
Pump Compartment
A service door on the right side of the upper structure allows ground-level access to the hydraulic pumps, hydraulic filters, engine oil filter, and fuel filters.
Radiator Compartment
The left rear service door allows easy access to the engine radiator, hydraulic oil cooler, air-to-air aftercooler, and AC condenser. A reserve tank and drain cock are attached to the radiator for ground level maintenance.
Greasing Points
A concentrated remote greasing block on the boom allows the greasing of hard-to-reach locations on the boom and stick.
Fan Guard
The engine radiator fan is enclosed by a steel guard that provides maximum protection when carrying out routine service and maintenance.
Anti-Skid Plate
Anti-skid plating covers the entire upper structure and storage box to prevent slipping during maintenance. Safety is further enhanced with the addition of countersunk bolts to reduce trip hazards.
Diagnostics and Monitoring
The 320D/D L Series 2 is equipped with Scheduled Oil Sampling (S∙O∙SSM) ports for the hydraulic system, engine oil, and coolant. Standard hydraulic test ports enable a service technician to quickly
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