New | M318D MH Material Handler

The Cat® D Series Material Handlers incorporate innovations for improved performance and versatility. Increased lifting capacity, improved cycle times and ease of operation lead to increased productivity and lower operating costs.

Engine ModelCat® C6.6 with ACERT™ Technology
Displacement403.0 in3
Bore4.0 in
Gross Power174.0 hp
Maximum Torque at 1,400 rpm594.0 ft-lb
Net Power - EEC/80/1269166.0 hp
Net Power - ISO 9249166.0 hp
Ratings1800.0 RPM
Stroke5.0 in
Operating Weight19 000 to 22 700 kg (41,888 to 50,045 lb)
Counterweights - Standard8818.0 lb
Dozer Blade1698.0 lb
MH Boom - Front and Rear Outriggers45415.0 lb
MH Boom - Front and Rear Outriggers - With MH Undercarriage47730.0 lb
MH Boom - Front and Rear Outriggers - With MH Undercarriage and Push Blade49273.0 lb
MH Boom - Rear Dozer Only42218.0 lb
MH Boom - Rear Dozer, Front Outriggers44864.0 lb
MH Push Blade (with MH Undercarriage)1488.0 lb
One-Piece Boom - Front and Rear Outriggers44974.0 lb
One-Piece Boom - Front and Rear Outriggers - With MH Undercarriage47289.0 lb
One-Piece Boom - Front and Rear Outriggers - With MH Undercarriage and Push Blade48832.0 lb
One-Piece Boom - Rear Dozer Only41778.0 lb
One-Piece Boom - Rear Dozer, Front Outriggers44423.0 lb
Outriggers2271.0 lb
Sticks - Digging Long1323.0 lb
Sticks - Digging Medium1277.0 lb
Sticks - Digging Short1213.0 lb
Sticks - Industrial1146.0 lb
Sticks - MH Drop Nose Short1852.0 lb
Sticks - MH Straight2094.0 lb
VA Boom - Front and Rear Outriggers46187.0 lb
VA Boom - Front and Rear Outriggers - With MH Undercarriage48502.0 lb
VA Boom - Front and Rear Outriggers - With MH Undercarriage and Push Blade50045.0 lb
VA Boom - Rear Dozer Only42990.0 lb
VA Boom - Rear Dozer, Front Outriggers45636.0 lb
Maximum Travel Speed16.0 mph
Creeper Speed - 1st Gear2.0 mph
Creeper Speed - 2nd Gear8.0 mph
Drawbar Pull23155.0 lb
Forward/Reverse - 1st Gear5.0 mph
Forward/Reverse - 2nd Gear16.0 mph
Maximum Gradeability47%
Hydraulic System
Maximum Flow - Auxiliary Circuit - High Pressure66.0 gal/min
Maximum Flow - Auxiliary Circuit - Medium Pressure13.0 gal/min
Maximum Flow - Implement/Travel Circuit77.0 gal/min
Maximum Flow - Swing Mechanism30.0 gal/min
Maximum Pressure - Auxiliary Circuit - High Pressure5076.0 psi
Maximum Pressure - Auxiliary Circuit - Medium Pressure2901.0 psi
Maximum Pressure - Implement Circuit - Heavy Lift5439.0 psi
Maximum Pressure - Implement Circuit - Normal5076.0 psi
Maximum Pressure - Swing Mechanism4496.0 psi
Maximum Pressure - Travel Circuit5076.0 psi
System67.0 gal
Tank Capacity45.0 gal
Swing Mechanism
Swing Torque35403.0 lb ft
Swing Speed10.0 RPM
Service Refill Capacities
Cooling9.5 gal
Engine Crankcase4.0 gal
Final Drive0.7 gal
Front Steering Axle (Differential)2.9 gal
Fuel Tank Capacity102.0 gal
Powershift Transmission0.7 gal
Rear Axle Housing (Differential)3.7 gal
Sound Levels
Exterior SoundExterior Sound
Ground Clearance15.0 in
Minimum Turning Radius - Standard Axle - End of One-Piece Boom27.9 ft
Minimum Turning Radius - Standard Axle - End of VA Boom23.3 ft
Minimum Turning Radius - Standard Axle - Outside of Tire22.3 ft
Oscillation Axle Angle±6°
Maximum Steering Angle35.0 Degrees
Working Ranges
Maximum Height (stick pin)39.5 ft
Maximum Reach (stick pin)36.1 ft
Tire Options
Optional Tires10.00-20 (dual solid rubber); 11.00-20 (dual pneumatic)

Built for power, reliability, low maintenance, excellent fuel economy and low emissions.

Powerful Performance

The Cat® C6.6 engine with ACERT™ Technology introduces a series of evolutionary, incremental improvements that provide breakthrough engine performance. The building blocks of ACERT Technology are fuel delivery, air management and electronic control. ACERT Technology optimizes engine performance while meeting EPA Tier 3 engine emission regulations. The Cat C6.6 engine in the M318D MH delivers a maximum gross power of 130 kW (174 hp).

Low Fuel Consumption

The Cat C6.6 engine is electronically controlled and uses the Cat Common Rail Fuel System and fuel pump. This combination provides outstanding fuel consumption during both production and travel. When the system recognizes roading application the engine will operate at the most efficient system operating point to save fuel without compromising road performance.

Low Noise, Low Vibration

The Cat C6.6 design improves operator comfort by reducing sound and vibration.

Cooling System

An electronically controlled, hydraulic motor drives a variable speed on-demand fan for engine coolant and hydraulic oil. The optimum fan speed is determined based on coolant and hydraulic oil temperature resulting in reduced fuel consumption and lower sound levels. The electronic engine control continuously compensates for the varying fan load, providing consistent net power, regardless of operating conditions.

One-Touch Low Idle Control

The two stage, one-touch Automatic Engine Speed Control reduces engine speed if no operation is performed, maximizing fuel efficiency and reducing sound levels.

Waste Handling Package

The Waste Handling Package has been specifically developed for Material Handlers working in waste transfer stations or other dusty applications. This option features the following:

  • An automatic, hydraulic reversible fan that reverses airflow after a set interval, manually adjustable between 2 and 60 minutes via the new monitor.
  • A special dense wire mesh cooling system hood further reduces radiator clogging.
  • Two cyclone filters provide clean filtered air to the engine compartment, air cleaner, aftercooler and air conditioner condenser.

Fast cycle times and increased lift capacity combine to maximize your productivity in any job.

Implement Speed

D Series Material Handlers are able to offer fast stick and swing speeds, leading to more productivity.

Dedicated Swing Pump

A dedicated variable displacement piston pump and fixed displacement piston motor power the swing drive. This closed hydraulic circuit maximizes swing performance without reducing power to the other hydraulic functions, resulting in smoother combined movements.

Heavy Lift Mode

This mode maximizes lifting performance by boosting the lifting capability of the material handler by 7%. Heavy loads can be easily moved in the full working range of the machine, maintaining excellent stability and speed.

Adjustable Hydraulic Sensitivity

Adjustable Hydraulic Sensitivity allows the operator to adjust the aggressiveness of the machine according to the application.

Proportional Auxiliary Hydraulics

Versatility of the hydraulic system can be expanded to utilize a wide variety of hydraulic work tools using multiple valve options.

  • The Multi-Combined Valve is the core of the Tool Control System, allowing the operator to select up to ten preprogrammed work tools from the monitor. These preset hydraulic parameters support either one-way or two-way flow. The joystick sliding switches allow modulated control of the work tool.
  • The Medium Pressure Function Valve provides proportional flow that is ideal for tilting buckets or rotating tools.
  • A feature for the D Series Material Handlers is the optional second High Pressure Valve. In combination with the Multi-Combined Valve, it provides the possibility to operate the machine with work tools or in applications requiring a third auxiliary hydraulic function.

Stick Regeneration Circuit

The Stick Regeneration Circuit increases efficiency and helps increase controllability for higher productivity and lower operating costs.

Hydraulic Snubbers

Caterpillar integrates its cylinder snubber technology into all Wheel Material Handler boom, stick and hydraulic cab riser cylinders. These snubbers help cushion shocks, reduce sound and increase cylinder life.

Reduces stress and vibrations transmitted to the machine and provides a more comfortable environment.


It allows the operator to fully concentrate on production. The unique Cat® SmartBoom™ significantly enhances operator comfort and job efficiency. Loading is more productive and more fuel efficient as the return cycle is reduced while the boom down function does not require pump flow.

The D Series Material Handlers help build a better world and preserve the fragile environment.

Fuel Efficiency

The Material Handlers are designed for outstanding performance with high fuel efficiency. This means more work done in a day, less fuel consumed and minimal impact on our environment.

Low Exhaust Emissions

The Cat® C6.6 engine meets EPA Tier 3 emissions regulations while offering increased performance, reliability and reduced fuel consumption and sound levels.

Quiet Operation

Operator and spectator noise levels are extremely low as a result of the variable speed fan and remote cooling system.

Biodegradable Hydraulic Oil

The optional biodegradable hydraulic oil (Cat BIO HYDO Advanced HEES™) is formulated to provide excellent high-pressure and high temperature characteristics, and is fully compatible with all hydraulic components. Cat BIO HYDO Advanced HEES™ is fully decomposed by soil or water microorganisms, providing a more environmentally sound alternative to mineral-based oils.

Fewer Leaks and Spills

Lubricant fillers and drains are designed to minimize spills. Cat O-Ring Face Seals, Cat XT™ Hose and hydraulic cylinders are all designed to help prevent fluid leaks that can reduce the machine performance and cause harm to the environment.

Longer Service Intervals

Working closely with your Cat dealer can help extend service intervals for engine oil, hydraulic oil, axle oil and coolant. Meaning fewer required fluids and fewer disposal, all adding up to lower operating costs.

The interior layout maximizes operator space, provides exceptional comfort and reduces operator fatigue.

Interior Operator Station

Visibility and ergonomics are some of the many features of the D Series Material Handler Operator Station. The cab provides maximum space and is designed for simplicity and functionality. Frequently used switches are centralized and are situated on the right-hand switch console. The left-hand seat console controls the dozer blade and/or outriggers, and is tiltable for easy access to the cab. The fully automatic climate control adjusts temperature and air flow for exceptional operator comfort. Other features include a cigar lighter, ashtray, drink/bottle holder, magazine rack and integrated mobile phone holder.

Cab Construction

The exterior design uses thick steel tubing along the bottom perimeter of the cab, improving the resistance to fatigue and vibration. This design allows the falling object guards to be bolted directly to the cab. Interior noise levels are substantially reduced due to the cab shell being attached to the frame with rubber mounts that limit vibration and sound transmitted from the frame.

Viewing Area

To maximize visibility, all glass is affixed directly to the cab, eliminating the use of window frames. Choice of fixed or easy-to-open split front windshields meet operator preference and application conditions.

  • The fixed front windshield comes with high-impact resistant, laminated glass.
  • The 70/30 split front windshield opens with the upper portion able to be stored out of the way above the operator. The lower front windshield features a rounded design to maximize downward visibility and improves wiper coverage. This windshield option also features the one-touch action release system.
  • The roof of the cab provides an additional viewing pane with a skylight for added upward visibility. Direct sunlight is diverted with the retractable sunshield.

Heated Mirrors

Another feature is electrically heated mirrors, increasing safety and visibility in cold conditions.


The parallel wiper system maximizes visibility in poor weather conditions. The wiper virtually covers the entire front windshield, cleaning the operator’s immediate line of sight.


The new compact color monitor displays information in the local language that is easy to read and understand. Functions include the following:

  • Two times 5 programmable “quick access” buttons for one-touch selection of favorite functions.
  • Filter and oil change warnings displayed when the number of hours reaches the maintenance interval.
  • Tool select functionality, allowing the operator to select up to ten pre-defined hydraulic work tools.
  • Travel motor retarder selection to choose between three levels of aggressiveness in braking once the travel pedal is released.
  • Rear camera viewing capabilities from the standard camera mounted on the counterweight.

Deluxe Seat

The optional deluxe seat, equipped with an active seat climate system, improves operator comfort. Cooled air flows through the seat cushions to reduce body perspiration. On cold days, a two-step seat heater keeps the operator warm and comfortable. The fully adjustable seat with adjustable lumbar support automatically adjusts to the driver’s weight providing a more relaxed and comfortable environment.

Lunch Box

A large storage compartment is located behind the operator’s seat. The compartment provides sufficient room to store items such as a lunch box. A cover secures the contents during machine operation.

Foot Pedals

Two-way pedals for travel and auxiliary circuits provide increased floor space, reducing the need to change positions. The foot pedal for auxiliary high-pressure circuit can be locked in the off position and used as a footrest for greater operator comfort.

Cat Standard Rearview Camera

The rearview camera displays on the operator monitor. Together with best-in-class visibility to the front, up, left and right, the rearview camera ensures the safe operation of the machine.

Machine Security

An optional Machine Security System is available from the factory. This system controls who can operate the machine when, and utilizes specific keys to prevent unauthorized machine use.

Hydraulic cab riser is available to maximize viewing to all sides of the machine.

Hydraulic Cab Riser

The Hydraulic Cab Riser (HCR) design provides the most suitable solution when high flexibility in cab height is needed. Main features of the hydraulic riser include the following:

  • Stability - The lift arms on the HCR are a wide and deep box-sectioned design with improved top and bottom links for greater cab stability. Further stability is achieved with the help of the retractable hydraulic cylinders used to raise the cab.
  • Speed - Two heavy-duty hydraulic cylinders provide quick and controlled up and down travel.
  • Comfort - The parallelogram design of the linkage allows the cab to remain level at all ranges of motion. HCR movement is also slowed as the cab reaches the end of the riser stroke, eliminating the effects of a sudden start/stop.
  • Safety - In the event of a hydraulic malfunction, the cab can be lowered using either a lever inside the cab or one on the frame at ground level.

Bottom Position (1)

The bottom position is used for shipping and travel, allowing for safer transporting.

Top Position (2)

The top position raises the cab by 2400 mm (94.5 in). This provides optimal viewing for all material handling jobs.

Undercarriage and axle design provides maximum strength, flexibility and mobility on wheels.

Undercarriage Options

Effective hydraulic line routing, transmission protection and heavy-duty axles make the Cat undercarriages perfect for material handler applications. The D Series M318D MH comes with the option of three different undercarriages in order to provide the greatest stability while performing your material handler jobs.

  • Material Handling - The Material Handling undercarriage with four welded outriggers is ideal for the extra stability needed, especially when using a Hydraulic Cab Riser.
  • Material Handling with Dozer Blade - An optional expansion to the Material Handling Undercarriage described above with an additional Dozer Blade mounted ahead of the front stabilizers to be used to push material commonly encountered in waste and millyard applications.
  • The standard undercarriage allows for different kinds of stabilizers to be attached to the front and rear of the machine.

Heavy-Duty Axles

The front axle offers wide oscillating and steering angles. The transmission is mounted directly on the rear axle for protection and optimum ground clearance.

Advanced Disc Brake System

The disc brake system acts directly on the hub instead of the drive shaft to avoid planetary gear backlash. This solution minimizes the rocking effect associated with working free on wheels.

Drive Line Concept

The M318D MH driveline design effectively utilizes the engine torque and power to provide a comfortable ride with improved smoothness, hydraulic retarding, and gear shifting commonly used during travel between material handling jobs.

Ground Clearance

A compact undercarriage design provides the M318D MH with optimum ground clearance during travel.

Improved strength and kinematics help to bring higher production and efficiency to all jobs.

MH Booms and Sticks

The MH booms have been designed to handle increased lifting capacities. The stick range offers leading side plates to maximize the protection of hydraulic lines. The lines are fitted in between the two side plates offering protection from damage. Multiple boom and stick options allow you to pick the best match for your job.

MH Booms

A specially designed MH boom is available to meet the functionality requirements demanded in material handling applications. The boom arrangements include high pressure hydraulic lines for opening and closing functionality and medium pressure lines for implement rotation.

M318D MH Sticks

Two options of MH sticks are available for the M318D MH, all equipped with high and medium pressure auxiliary lines. The 4900 mm (193 in) Drop Nose Stick offers the reaching and lifting capabilities required for typical MH applications, while the 4200 mm (165 in) Straight Stick is the best solution for when additional work tool functionality is needed.

Special Applications

The M318D MH can be further outfitted with additional boom and stick options (see Optional Equipment), offering the ability to combine the material handler’s hydraulic cab riser with traditional excavator functionality. This combination has been proven in transfer station, mining, and millyard applications.

A wide variety of optional factory-installed attachments are available to enhance performance and improve job site management.

Tool Control

Ten hydraulic pump flow and pressure settings can be preset within the monitor, eliminating the need to adjust the hydraulics each time a tool is changed.

Orange Peel Grapple

The most common tool for material handling applications, this grapple is available in a range of sizes and provides a solution for a variety of material types.

Magnet Generator

The solid state generator set system is being introduced to enable the M318D MH to power scrap magnets up to 1448 mm (57 in) diameter as well as work with the popular orange peel grapples used in scrap handling. The versatility to work with either a magnet or grapple enables customers to use these machines in any part of their scrap yard application. The patented Caterpillar system provides unmatched performance, reliability, and versatility compared to competitors’ equipment, keeping customer recycling operations more productive and profitable.

Joystick Steering

The unique joystick steering option enables an operator to reposition the machine while traveling in first gear by the use of the slider switch on the right joystick. This enables the operator to keep both hands on the joysticks while simultaneously moving the implements and traveling. The operator can do more precise work faster with increased safety around the machine.

Working Modes

Two selectable working modes are available to choose from in order to get the best power output from the engine and hydraulics and maintain optimum fuel efficiency.

  • Economy Mode - for precise material handling and loading with the added benefit of reduced fuel consumption.
  • Power Mode - for applications requiring fast volume loading and material casting.

Automatic Travel Mode

Automatically engaged when the travel pedal is depressed this mode provides maximum speed, drawbar pull and best in class fuel efficiency.

Product Link

Product Link allows remote monitoring of the machine, using a powerful telemetric system to transmit needed information to the customer and the dealer via a secure, web-based application, VisionLink™. Critical information, such as event and diagnostic codes, is readily accessible, as are machine statistics, such as hour-meter reading, fuel consumption and idle time. Mapping functions include location and geo-fencing, which assist in servicing operations and in preventing unauthorized machine use. With Product Link, the customer and the dealer have an invaluable tool for more efficiently managing machines and fleets.

Simplified and easy maintenance save you time and money. Cat® dealer services help you operate longer with lower costs.

Ground Level Maintenance

Caterpillar designed its D Series Material Handlers with the operator and service technician in mind. Gull-wing doors, with pneumatically-assisted lift cylinders, effortlessly lift up to allow critical maintenance to be performed quickly and efficiently while maintaining operator safety.

Extended Service Intervals

The D Series Material Handler service and maintenance intervals have been extended to reduce machine service time, increase machine availability and reduce operating costs. Using S·O·SSM Scheduled Oil Sampling analysis, hydraulic oil change intervals can be extended up to 6,000 hours.

Engine Oil

Cat engine oil is formulated to optimize engine life and performance. The specially formulated oil is more cost effective and increases engine oil change interval to 500 hours, providing industry leading performance and savings.

Air Filters

Cat air filters eliminate the use of service tools, reducing maintenance time. The air filter features a double-element construction with wall flow filtration in the main element and built-in mini-cyclone precleaners for superior cleaning efficiency. The air filters are constantly monitored for optimum performance. If airflow becomes restricted, a warning is displayed by the way of the in-cab monitor.

Capsule Filter

The hydraulic return filter, a capsule filter, prevents contaminants from entering the system when the hydraulic oil is changed.

Fuel Filters

Cat high efficiency fuel filters with a Stay-Clean Valve™ features a special media that removes more than 98% of particles, increasing fuel injector life. Both the primary and secondary fuel filters are located in the engine compartment and can be easily changed from ground level.

Water Separator

The D Series is equipped with a primary fuel filter with water separator located in the engine compartment. For ease of service, the water separator can be easily accessed from ground level.

Fuel Tank Drain

The durable, corrosion-free tank has a remote drain located at the bottom of the upper frame to remove water and sediment. The tank drain with hose connection allows simple, spill-free fluid draining.

Front Compartment

The front compartment hood can be opened vertically, providing outstanding ground level access to the batteries, air-to-air aftercooler, air conditioner condenser and the air cleaner filter.

Swing-out Air Conditioner Condenser

The air conditioning condenser swings out horizontally to allow complete cleaning on both sides as well as excellent access to the air-to-air aftercooler.

Scheduled Oil Sampling

Caterpillar has specially developed S·O·SSM Oil Sampling Analysis to help ensure better performance, longer life and increased customer satisfaction. This thorough and reliable early warning system detects traces of metals, dirt and other contaminants in your engine, axle and hydraulic oil. It can predict potential trouble avoiding costly failures. Your Cat dealer can give you results and specific recommendations shortly after receiving your sample.

Engine Inspection

The engine can be accessed from both ground level and the upper structure. The longitudinal layout ensures that all daily inspection items can be accessed from ground level.

Anti-Skid Plates

They cover the top of the steps and upper structure to help prevent slipping during maintenance. The Anti-Skid plates reduce the accumulation of mud on the upper structure, improving the cleanliness and safety.

Easy to Clean Coolers

Flat fins on all coolers reduce clogging, making it easier to remove debris. The main cooling fan and air conditioner condenser are both hinged for easier cleaning.

Remote Greasing Blocks

For those hard to reach locations, remote greasing blocks for the swing bearing and front-end-attachments have been provided to reduce maintenance time. For the undercarriage, two remote blocks provide easy access for greasing the oscillating axle and, as an option, the dozer blade.

Handrails and Steps

Large handrails and steps assist the operator in climbing on and off the machine.

LED Rear Lights

Standard Light Emitting Diode (LED) rear lights provide increased visibility on the job site, higher durability and longer life.

  • Alternator, 75 A
  • Lights
  • Main shut-off switch
  • Maintenance free batteries
  • Signal/warning horn
  • Automatic engine speed control
  • Automatic starting aid
  • Cat C6.6 with ACERT Technology EPA Tier 3 compliant
  • Fuel/water separator with level indicator
  • High ambient cooling 52° C
  • Heavy lift mode
  • Load-sensing Plus hydraulic system
  • Manual work modes (economy, power)
  • Separate swing pump
  • Stick regeneration circuit
Operator Station
  • Adjustable armrests
  • Air conditioner, heater and defroster with automatic climate control
  • Ash tray with cigarette lighter (24 volt)
  • Beverage cup/can holder
  • Bolt-on FOGS capability
  • Bottle holder
  • Bottom mounted parallel wiping system, covering upper and lower windshield glass
  • Camera mounted on counterweight displays through cab monitor
  • Coat hook
  • Floor mat, washable, with storage compartment
  • Fully adjustable mechanical suspension seat
  • Instrument panel and gauges
  • Laminated front windshield
  • Left side console, tiltable, with lock out for all controls
  • Literature compartment behind seat
  • Literature holder in right console
  • Mobile phone holder
  • Parking brake
  • Positive filtered ventilation
  • Power supply, 12V-7A
  • Rear window, emergency exit
  • Retractable seat belt
  • Skylight
  • Sliding door windows
  • Steering column, tiltable
  • Storage area suitable for a lunch box
  • Sunshade for windshield and skylight
  • MH undercarriage with four welded outriggers
  • Heavy-duty axles, advanced travel motor, adjustable braking force
  • Oscillating front axle with remote greasing
  • Tires, 10.00-20 16 PR, solid rubber
  • Tool box in undercarriage
  • Two-piece drive shaft
  • Two-speed transmission
Other Equipment
  • Automatic swing brake
  • Counterweight, 4000 kg (8,818 lb)
  • Mirrors, frame and cab
  • Product Link ready




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