A combination of innovations working at the point of combustion, ACERT Technology optimizes engine performance while meeting emission regulations.
Diesel EngineThe Cat C18, with ACERT Technology, is an 18.1 L, six?cylinder, 390 kW (530 hp) engine with mechanically actuated electronic fuel injection (MEUI) and overhead camshaft. ACERT Technology provides outstanding engine performance through advanced electronic control, precision fuel delivery, and refined air management.
Fuel ConsumptionThe Advanced Diesel Engine Management (A4) controller uses sensors throughout the engine to manage engine load and performance. The A4 controller is the muscle behind engine responsiveness, self-diagnostics, controlling emissions, and fuel economy.
Fuel SystemThe MEUI system combines high-pressure injection and electronic control in a single compact unit. The electronic unit injector is an integral part of the C18 fuel system. Computerized electronic control provides precise metering and timing of fuel injection.
Cooling SystemHigh-capacity, side?by?side cooling system allows operation in ambient temperatures up to 52° C. The Electric Power Control (EPC) controls the fan speed based on coolant temperature and hydraulic oil temperature for optimized cooling.
TurbochargerThe C18 engine uses a water-cooled, center-section waste gated turbocharger for improved performance. This turbocharger controls the air volume to the cylinders and works efficiently during low and high load conditions.
EmissionsACERT 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.
Cold Weather Starting KitThe kit consists of two additional batteries, heavy-duty harness, large capacity starting motor, and the ether starting aid. With this kit, the excavator has the capability to start at –32° C.
Environmentally Responsible Design
Cat machines not only help you build a better world, they help maintain and preserve the environment.
Outstanding PerformanceMany features are designed to provide outstanding performance, which can mean more work done in a day, less fuel consumption, and minimal impact on our environment.
Low Exhaust EmissionsThe Cat C18 diesel engine utilizes unique ACERT Technology to meet exhaust emissions regulations while assuring optimum fuel efficiency.
Quiet OperationThe hydraulically driven cooling fan is thermostatically controlled so the fan only runs at the speed necessary to maintain correct system operating temperatures. The result is cool, quiet operation with less disturbance to the surrounding environment.
Ozone ProtectionTo help preserve the earth’s ozone layer, the air conditioning unit uses only R-134a refrigerant, which does not contain harmful chlorofluorocarbons (CFC’s).
Fewer Leaks and SpillsEngine oil and encapsulated hydraulic oil filters are positioned vertically and are easy to reach to minimize spillage. Service intervals are extended to reduce the times fluids are changed and handled. The new hydraulic oil fine filtration system attachment extends the service interval from 2,000 to 5,000 hours. Compatible with Cat HEES hydraulic bio-oil for ecologically sensitive applications. Finally, the new Cat Extended Life Coolant extends service (up to 6,000 hours) so there is less need for fluid disposal.
Undercarriage and Structures
Durable undercarriage absorbs stresses and provides excellent stability.
TrackNew grease-lubricated track called GLT4 comes standard. Track links are assembled and sealed with grease to decrease internal bushing wear, reduce travel noise, and extend service life to lower operating costs.
Track Roller FrameA longer recoil spring improves durability and service life of the undercarriage; an offset idler increases stability while working over the front of the machine.
Forged IdlerThe more durable forged idler is standard on 385C front shovel.
Idler Guards and Track GuidesIdler guards and center track guides to maintain track alignment are standard. Optional two-piece full?length track guiding guards are available.
Positive Pin Retention 2 (PPR2)PPR2 track link is standard. PPR2 is designed to prevent looseness of the track pin in the link, which reduces stress, eliminates pin walking, and increases service life.
Final DrivesThe three-stage reduction planetary type final drives function as a compact drive/brake unit that delivers excellent performance and reliability.
Carbody DesignThe X-shaped, box-section carbody provides excellent resistance to torsional bending. The upper structure weight and stresses are distributed evenly across the full length of the track roller frame. Robot welding ensures consistent, durable welds.
Travel MotorsTwo-speed axial piston hydraulic motors provide drive power. Speed selection is automatic when the high-speed position is selected. Travel motors have internal disk brakes to hold the machine when stationary, and the motors are protected from damage by rigid covers.
Upper FrameThe rugged main frame is designed for maximum durability. Box-section channels improve upper frame rigidity. A new boom foot design transfers load more efficiently with less stress in critical areas. Also, reinforced lift cylinder and swing drive mounts increase structure durability in rock and quarry applications.
Cat hydraulics deliver power and control to keep material moving at high volume.
Hydraulic SystemThe hydraulic system includes a three-pump system with an independent swing circuit and a hydraulic circuit utilizing the proven Proportional Priority Pressure Compensated (PPPC) system. Cat electronic control and activation ensures high hydraulic system efficiency and excellent productivity.
PPPC SystemThe PPPC system provides many advancements. Cylinder speed is directly related to the operator’s movement of the joystick from feathering to full speed. Flow to cylinders during multi-functional operation is directly controlled by the operator and is not dependent on loads. Also, the controller reduces pump output to save power when joysticks are in the neutral position.
Power Management ControlThe pump valve electronic controller is central to power management control and provides highly efficient control for the pumps, valves, and engine.
Swing PerformanceThe three-pump system with independent swing gives priority to the swing circuit for strong swing acceleration and easily controlled multi-function operation.
Component LayoutThe hydraulic pumps, control valve, and hydraulic tank are close together to minimize piping length. The swing control valve is mounted directly on the swing motor. Main and swing pump suction and discharge lines have large diameters, which combine with the component layout to guarantee high efficiency.
Auxiliary HydraulicsAn auxiliary valve is standard and is used for the bottom dump circuit. It is driven electrically based on commands from the pump valve controller.
Front Linkage Hydraulic SystemThe hydraulic system for the implement consists of two boom cylinders, a stick cylinder, two bucket cylinders, two bottom dump cylinders, and a master cylinder.
Hydraulic Oil Filtration SystemThe hydraulic system features six standard filters. These filters improve reliability, extend the life of hydraulic equipment and hydraulic oil, boost performance, and reduce running costs. A fine filtration system is available as an attachment.
The 385C FS delivers higher production and efficiency to all jobs.
Parallelogram LinkageThe Cat 385C FS Front Shovel features parallelogram-type front linkage with a master cylinder. The linkage automatically keeps the bucket parallel to the ground. This allows excellent penetration, fast loading, and a smooth floor cleanup. The operator can concentrate on the boom and stick rather than bucket adjustments. The master cylinder circuit automatically maintains a level bucket while raising the boom. It aids in bucket positioning both above and below grade, eliminating constant adjustment during the work cycle. The master cylinder arrangement also uses bucket cylinder circuit pressure to increase the boom lifting force.
BoomThe boom is 4.6 m long and features a rigid structure with a number of steel castings. The cast-steel portions are structured into a box to reduce the weight of the boom nose and boom foot.
StickThe 385C FS offers a 3.4 m long stick. The stick nose and stick foot are made of cast steel. The middle portion has a box structure fabricated with steel plates. The stick cylinder mounting bracket is reinforced from the inside.
Bottom Dump BucketThe recommended bucket for the 385C FS is a bottom dump bucket. It is designed for strength, performance, and long service life.
Linkage PinAll pins used in the 385C FS front linkage have thick chrome plating, giving them high wear and corrosion resistance. The diameter of each pin is made as large as possible to smoothly distribute the shear and bending loads associated with the digging and lifting forces.
Designed for simple, easy operation and comfort, the 385C FS allows the operator to focus on production.
Cab DesignThe workstation has been designed to be spacious, quiet, and comfortable for the operator, assuring high productivity throughout the entire workday. Switches are conveniently located for easy access. The monitor is located to provide excellent visibility and access.
SeatThe seat provides a variety of adjustments, including fore/aft, height and weight to suit the operator. Also included are adjustable armrests and a retractable seat belt. For additional comfort, a new heated air suspension seat is available as an attachment.
SkylightAn enlarged skylight with sunshade provides excellent visibility and good ventilation.
Hydraulic Activation Control LeverThe hydraulic activation control lever deactivates hydraulic functions during engine startup and prevents unintentional machine operation.
Climate ControlPositive filtered ventilation with a pressurized cab comes standard. Fresh air or recirculated air can be selected with a switch on the left console.
To maximize visibility, all glass is affixed directly to the cab, eliminating the use of window frames. A choice of fixed or easy-to-open split front windshield meets operator preference and application conditions.
- 50/50 split front windshield allows both upper and lower portions to be stored in an overhead position.
- 70/30 split front windshield stores the upper portion above the operator. The lower front windshield features a rounded design to maximize downward visibility and improves wiper coverage.
- Both openable versions feature a one-touch action release system.
- The fixed front windshield is available in standard-duty laminated glass or high-impact-resistant laminated glass.
WipersParallelogram wiper, including a washer nozzle, is mounted below the cab windshield, optimizing the operator’s viewing area and offering continuous and intermittent modes.
MonitorThe compact, full-color monitor has functions to display machine, maintenance, diagnostic, and prognostic information. The angle of the monitor can be adjusted to face the operator and prevent sun glare.
Cab ExteriorThe 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 MountsThe cab shell is attached to the frame with viscous rubber cab mounts, which dampen vibrations and sound levels while enhancing operator comfort.
Cab RiserTo provide excellent forward visibility for truck loading and other applications, an 870 mm cab riser is standard on the 385C Front Shovel.
ConsolesRedesigned consoles feature a simple, functional design to reduce operator fatigue, ease of switch operation, and excellent visibility. Both consoles have attached armrests and allow the height of the armrests to be adjusted.
Standard Cab EquipmentTo enhance operator comfort and productivity, the cab includes a lighter, drink holder, coat hook, service meter, literature holder, magazine rack, and storage compartment. The cab can be equipped with optional 12 volt converter and up to two 12V-7 amp electrical sockets to provide additional electrical resources.
Machine SecurityAn optional Machine Security System (MSS) is available from the factory. MSS uses a special Cat key with an embedded electronic chip for controlling unauthorized machine operation.
Product LinkThe machine comes Product Link ready from the factory.
Electronic Control System
Managing the engine and hydraulics for maximum performance is simple.
Monitor Display Screen
The monitor is a full-color 400 × 234 pixels Liquid Crystal Display (LCD) graphic display. 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.
Clock and Throttle Dial DisplayThe clock, throttle dial, and gas station icon with green color are displayed in this area.
Gauge DisplayThree analog gauges – fuel level, hydraulic oil temperature, and coolant temperature – are displayed in this area.
Event DisplayMachine event information is displayed in this area along with the icon and language.
Multi-information DisplayThis area is reserved for displaying information that is convenient for the operator. The Cat logo is displayed when no information is available to display.
This is used to suit the operator’s preference or application.
- Quicker for fast response and more production
- Slower for more precision
- Three preset settings with 21 available settings
Electronic joysticks provide features not possible with hydraulic pilot valves:
- Eliminate pilot lines in cab for quieter operation
- Adjustable gain/response
Service and Maintenance
Fast, easy service has been designed in with extended service intervals, advanced filtration, convenient filter access, and user-friendly electronic diagnostics.
Service Points and IntervalsService points are centrally located with easy access to facilitate routine maintenance. Service intervals for engine oil and oil and fuel filters extend to 500 hours to reduce maintenance costs.
Oil Sample and Pressure PortsOil sample and pressure ports provide easy checking of machine condition and are standard on every machine.
Hydraulic Capsule FiltersThe return filters or capsule filters for the hydraulic system are located beside the hydraulic tank. The filter elements are removable without spilling hydraulic oil.
Remote Greasing BlockA concentrated remote greasing block on the boom delivers grease to hard-to-reach locations.
Radial Seal CleanerRadial seal main air cleaner with precleaner has a double-layered filter element for more efficient filtration. No tools are required to change the element.
Fuel-Water SeparatorThe water separator removes water from fuel, even when under pressure, and water level can be monitored in the cab.
Complete Customer Support
Cat dealer services help you operate longer with lower costs.
Machine SelectionMake 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.
PurchaseConsider 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 AgreementsCat 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.
OperationImproving 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.
Product SupportYou 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 downtime. You can save money with Cat remanufactured components.
Maintenance ServicesRepair 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.
ReplacementRepair, rebuild, or replace? Your Cat dealer can help you evaluate the cost involved so you can make the right choice.