323D L

Increased work tool options, new powerful engine and easier operation lead to increased productivity and lower operating costs.

Engine Model Cat® C6.4 ACERT™
Net Flywheel Power 150.0 hp
Net Power - ISO 9249 150.0 hp
Bore 4.02 in
Stroke 5.12 in
Displacement 389.0 in3

Operating Weight 50706.0 lb
Operating Weight - Minimum 49163.0 lb
Operating Weight - Maximum 50926.0 lb

Maximum Drawbar Pull 46310.0 lb
Maximum Travel Speed 3.5 mph

Hydraulic System
Main Implement System - Maximum Flow (2x) 54.0 gal/min
Max. Pressure - Equipment 5076.0 psi
Max. Pressure - Travel 5076.0 psi
Max. Pressure - Swing 3626.0 psi
Pilot System - Maximum Flow 8.6 gal/min
Pilot System - Maximum Pressure 566.0 psi
Boom Cylinder - Bore 4.7 in
Boom Cylinder - Stroke 49.6 in
Stick Cylinder - Bore 5.5 in
B1 Family Bucket Cylinder - Bore 4.7 in
Stick Cylinder - Stroke 59.2 in
B1 Family Bucket Cylinder - Stroke 43.5 in

Service Refill Capacities
Fuel Tank Capacity 108.0 gal
Cooling System 6.6 gal
Engine Oil 8.0 gal
Swing Drive 2.1 gal
Final Drive (each) 2.6 gal
Hydraulic System (including tank) 69.0 gal
Hydraulic Tank 32.0 gal

Sound Performance
Performance ANSI/SAE J1166 OCT 98

Brakes SAE J1026 APR90
Cab/FOGS SAE J1356 FEB88

Swing Mechanism
Swing Speed 11.5 RPM
Swing Torque 45600.0 lb ft

Engine and Hydraulics
The Cat® 323D L delivers the power and control that you need in order to get the job done quickly and efficiently in all applications.

Engine and Hydraulics

Cat C6.4
The Cat C6.4 with ACERT® Technology introduces a series of evolutionary, incremental improvements that provide breakthrough engine technology. The building blocks of ACERT Technology are fuel delivery, air management and electronic control. ACERT Technology optimizes engine performance while meeting global low emission regulations. With its proven technology, robust components and precision manufacturing, you can count on this engine to power up at start time and keep working productively all shift long.

Automatic Engine Speed Control
Automatic Engine Control with convenient one-touch command. During no-load or light-load conditions, the Automatic Engine Speed reduces engine speed. This maximizes fuel efficiency and reduces sound levels.

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.

Low sound, low vibration
By design, the Cat C6.4 improves operator comfort by reducing sound and vibration.

Component Layout
The 323D L hydraulic system and component locations are 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 to reduce friction loss and pressure drops. The layout further provides greater operator comfort by placing the radiator on the cab side of the upper structure. This allows incoming air to enter the engine compartment from the operator side and hot air and corresponding engine sound to exit on the opposite side away from the operator. This reduces engine compartment heat and sound being transmitted to the operator.

Pilot System
The pilot pump is independent from the main pumps and controls the front linkage, swing and travel operations.

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.

Hydraulic Cross Sensing System

Hydraulic Pumps
Auxiliary Hydraulic Valve
The auxiliary valve is standard on the 323D L. Control Circuits are available as attachments, allowing for 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 circuit saves 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.

Operator Station
Designed for comfort, simple and easy operation, the 323D L allows the operator to focus on production.

Operator Station

Operator Station
The workstation is spacious, quiet and comfortable, assuring high productivity during a long work day. The air conditioner and attachment switches are conveniently located on the right-hand wall, and the key switch and throttle dial are on the right-hand console. The monitor is easy to see and maximizes visibility.

Standard Cab Equipment
To enhance operator comfort and productivity, the cab includes a lighter; drink holder, coat hook, service meter, literature holder, magazine rack and storage compartment.

The monitor is a full color 400x234 pixels Liquid Crystal Display (LCD) graphic display. The monitor angle can be adjusted to minimize sun glare and has the capability of displaying information in Chinese and twenty-six other languages. The Master Caution Lamp blinks ON and OFF when one of the critical conditions below occurs:
  • Engine oil pressure low
  • Coolant temperature high
  • Hydraulic oil temperature high
Under normal conditions or the default condition, the monitor display screen is divided into four areas; clock and throttle dial, gauge, event display and multi-information display.

Joystick Control
Joystick controls have low lever effort and are designed to match the operator’s natural wrist and arm position. The operator can operate joystick controls with an arm on the armrest and the horizontal and vertical strokes have been designed to reduce operator fatigue.

A new suspension seat provides a variety of adjustments to suit the operator’s size and weight including fore/aft, height and weight. Wide adjustable armrests and a retractable seat belt are also included.

Hydraulic Activation Control Lever
For added safety, this lever must be in the operate position to activate the machine control functions.

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.

Redesigned consoles feature a simple, functional design to reduce operator fatigue, ease of switch operation and excellent visibility. Both consoles have attached armrests with height adjustments.

Cab Exterior
The exterior design uses thick steel tubing along the bottom perimeter of the cab, improving the resistance of fatigue and vibration. This design allows the FOGS to be bolted directly to the cab, at the factory or as an attachment later, enabling the machine to meet specifications and job site requirements.

Cab Mounts
The cab shell is attached to the frame with viscous rubber cab mounts, which dampen vibrations and sound levels while enhancing operator comfort.

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.

Pillar-mounted wipers increase the operator’s viewing area and offer continuous and intermittent modes.

Caterpillar® excavators are designed to handle the most rugged operating conditions while providing long life and value.


Carbody Design and Track Roller Frames
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
Rugged main frame is designed for maximum durability and efficient use of materials.

Durable Cat undercarriage absorbs stresses and provides excellent stability.

Booms and Sticks
Designed-in flexibility to help bring higher production and efficiency to all jobs.

Booms and Sticks

Booms, Sticks and Attachments
Designed for maximum flexibility, productivity and high efficiency on all jobs, the 323D L offers a wide range of configurations suitable for a variety of applications.

Work Tools - Attachments
The 323D L has an extensive selection of work tools to optimize machine performance.

Work Tools - Attachments

Service Life
Caterpillar buckets increase service life and reduce repair costs.
  • Dual radius design for increased heel clearance and reduced wear
  • Robot welding of hinge assembly for increased weld penetration and longer life
  • High strength and heat-treated steel that exceeds T-1 in high wear areas

Heavy-Duty Buckets
Heavy-duty (HD) buckets are used for a wide range of moderately abrasive applications such as mixed dirt, clay and rock. HD buckets have best loading and dumping characteristics and will empty easier in cohesive material. More robust construction than the GP buckets.

Heavy-Duty Rock Buckets
Heavy-duty rock for aggressive bucket loading in highly abrasive application such as shot rock and granite. Features include:
  • Thickest wear plates to extend the life of bucket in severe applications
  • Side wear plated extend further up the side of the bucket for maximum protection in rocky soils
  • Buckets accept sidebar protectors for best sidebar protection, or sidecutters for best fill characteristics and bucket wear protection

Service and Maintenance
Simplified service and maintenance features save you time and money.

Service and Maintenance

Ground Level Service
The design and layout of the 323D L was made with the service technician in mind. Many service locations are easily accessible at ground level allowing critical maintenance to get done 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 and pilot filter.

Radiator Compartment
The left rear service door allows easy access to the engine radiator, oil cooler and air-to-air-after-cooler. A reserve tank and drain cock are attached to the radiator for simplified maintenance.

Capsule Filter
The hydraulic return filter, a capsule filter, is situated outside the hydraulic tank. This filter prevents contaminants from entering the system when hydraulic oil is changed and keeps the operation clean.

Greasing Points
A concentrated remote greasing block on the boom delivers grease to hard-to-reach locations on the front.

Fan Guard
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 323D L is equipped with S•O•SSM sampling ports and hydraulic test ports for the hydraulic system, engine oil, and for coolant. A test connection for the Cat Electronic Technician (Cat ET) service tool is located behind the cab.

Complete Customer Support
Cat dealer services help you operate longer with lower costs.

Complete Customer Support

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 down time. Save money with 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.

Look past initial price. Consider the financing options available as well as day-to-day operating costs. This is also the time to look at dealer services that can be included in the cost of the machine to yield lower equipment owning and operating costs over the long run.

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.

Improving operating techniques can boost your profits. Your Cat dealer has videotapes, literature and other ideas to help you increase productivity, and Caterpillar offers certified operator training classes to help maximize the return on your investment.

Maintenance Services
Repair option programs guarantee the cost of repairs 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.

Cat® 323D L Total Solutions
Your excavator is more than a piece of equipment; it's your livelihood.

Cat® 323D L Total Solutions

More than a Machine
The Caterpillar 323D L excavator provides all the elements to give you the lowest cost to own and operate. At the end of the day, it all comes down to how much work you got done and how much did it cost you. Caterpillar and the 323D L offer you the tools to help lower your owning and operating costs.

Proven Reliability and Durability
Maximizes your up-time and provides long life and value. The 323D L has endured thousands of hours of operation, through comprehensive field follow program, in a variety of applications throughout the world.

Ease of Operation
Takes the complication out of operating. The monitor gives you vital operating and performance information, alerts in text, all in a simple, easy to navigate format in one of 27 languages, including Chinese.

More Versatility
Maximizes the machine to your job and minimizes downtime. The 323D L offers the most appropriate variety of front linkage options, which allows you to optimize your machine to the job requirements.

Better Serviceability
Making it easier to perform service and routine maintenance. The 323D L sets itself apart with the level of ground level access and maintenance features.

Extended Maintenance Intervals
Less out of pocket expenses over the life of the machine. The 323D L provides industry leading maintenance intervals that provide less cost over the life of the machine.

More Solutions
Caterpillar and it's dealer network have the ability to match a solution best suited to your needs. Your Cat dealer helps you operate longer with lower costs, by assisting you with a plan that can cover everything from machine configuration to eventual replacement.

Standard Equipment

Upper Structure
  • Electrical
  • Engine
  • Auxiliary hydraulic valve (one)
  • Automatic swing parking brake
  • Boom drift reducing valve
  • Boom lowering device for back-up
  • Capability of stackable valves for main valve (maximum three valves)
  • Capability of auxiliary circuit (aux. pump and valves)
  • Capability of boom and stick lowering control device
  • Cat data link with capability of E.T.
  • Cat product link ready
  • Caterpillar one key security system
  • Counterweight
  • Door locks and cap locks
  • Fixed type condenser core for air conditioning
  • GPS ready function
  • Mirrors, rearview (frame-right, cab-left)
  • Regeneration circuit for boom and stick
  • Reverse swing damping valve
  • Secondary engine shutoff switch
  • Steel wall between engine and pump compartment
  • Stick drift reducing valve
  • Straight travel hydraulic circuit
  • Two speed travel
  • Idler and center section track guiding
  • Towing eye on baseframe
Operator Station
  • Cab
  • Monitor

Optional Equipment

Front linkage
  • Bucket linkage, B1-family with lifting eye
  • Heavy-duty 5.7 m (18 ft 9 in) reach boom (with left side light)
  • Heavy-duty R2.9B1 (9 ft 6 in) stick for heavy-duty reach boom
  • Heavy-duty R2.5B1 (8 ft 2 in) stick for heavy-duty reach boom
  • Super Long Reach Arr. (Only for 320DL)
  • General Purpose 0.9 m3
  • General Purpose 1.0 m3
  • Heavy Duty 1.0 m3
  • Heavy Duty 1.2 m3 (requires Heavy-duty R2.5B1 stick)
  • Heavy Duty Rock 1.0 m3
  • General Purpose 0.4 m3 for Super long reach arrangement
  • Ditch Cleaning 0.6 m3 for Super long reach arrangement
Bucket Attachments
  • Tips, Side cutters and Side protectors
  • 600 mm (24 in) triple grouser shoes
  • 800 mm (32 in) triple grouser shoes
Operator Station
  • FM/AM radio (without cassette)
  • Head Rest
Air conditioner condenser, swing type
Pump, Electric Refueling, with automatic shutoff
Starting kit, cold weather, -32 C deg.
Auxiliary Hydraulics and lines
  • Boom and stick lines
  • Tool control system



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