WA900-3 Komatsu WA900-3 Specifications & Technical Data (2007—2019)

Service with a smile

It would be better if most of us approached routine maintenance and service as something that made us smile. That’s why Komatsu designed the WA800-3 and WA900-3 wheel loaders to make servicing as easy as possible. We know that by doing this, routine maintenance and servicing are less likely to be skipped, which can mean a reduction in costly downtime later. Here are some of the many service features found on these machines: Large service doors provide easy access to all engine service points and filters, and can be locked with the ignition key. Ground level greasing: all grease points are easily reached from ground level and grease banks are provided in strategic areas to reduce maintenance time. Large platforms provide easy access to cab windows. Full-hydraulic service and parking brakes eliminate air system maintenance. Cylinder buffer rings reduce shock loads to the cylinder packing and prolong cylinder life by 30%. Optional automatic lubrication system and wiggins fast fuel system are available to reduce maintenance time.

Wet multi-disc service brakes

Fully sealed. Contaminants are kept out, reducing wear and maintenance. Brakes require no adjustments for wear, further reducing maintenance costs. There is no air system to bleed, which eliminates the condensation of water in the system that can lead to contamination and corrosion. The braking system’s reliability has been increased with the use of two independent hydraulic circuits, providing hydraulic backup in the event that one circuit fails.

High-rigidity frames and loader linkage

The front and rear frames and loader linkage have more torsional rigidity providing longer frame life. Extensive testing has proved that frame and loader linkage have the ability to accommodate actual work loads.

Komatsu-integrated design

For the best value, reliability, and versatility. Hydraulics, power train, frame, and all other major components are engineered by Komatsu. You get a machine with components that are designed to work together to deliver higher production levels, greater reliability, and more versatility.

High Productivity and Fuel Efficiency

Komatsu’s integrated design results in components that are matched to provide the most efficient use of power, whether you’re excavating or stock handling.

Engine

The Komatsu SAA12V140E-3 delivers the power and efficiency to get the job done quickly and cost-effectively. It’s a water-cooled, four-stroke cycle, 12-cylinder, turbocharged, air-to-air after cooled, common rail direct injection engine with a piston displacement of 30.5 litres that produces high performance and excellent fuel economy.

Low fuel consumption

Low fuel consumption is achieved because of the low-noise, high-torque engine and the large-capacity torque converter with maximum efficiency in the low-speed range.

Automatic transmission with ECMV

The automatic transmission with ECMV automatically selects the proper gear speed based on travel speed, engine speed, and other travel conditions. The ECMV (Electronically Controlled Modulation Valve) system engages the clutch smoothly to prevent lags and shocks when shifting. This system provides efficient machine operation and a comfortable ride. Kick-down switch: With the touch of a finger, the kick-down switch automatically downshifts from second to first when beginning the digging cycle. It automatically shifts up from first to second when the direction control lever is placed in reverse. This results in increased rim pull for better bucket penetration and reduced cycle times for higher productivity. Hold switch: Auto shift is selected and if the operator turns on this switch when the lever is in 3rd or 4th gear, the transmission is held in that gear speed.

Komatsu components

Komatsu manufactures the engine, torque converter, transmission, hydraulic units, and electric parts on these wheel loaders. Komatsu wheel loaders are manufactured with an integrated production system using a strict quality control.

Komatsu designed axles and final drives

Provide rugged reliability with low maintenance. Axle shafts are full-floating. The front axle is fixed, whilst the rear axle is a centre pin support design that provides a total oscillation of up to 22 degrees. The differential reduction gear is a heavy-duty spiral bevel gear, for strength and reliable performance. The rugged, outboard planetary final drives carry the total gear reduction of the drive train to the wheel, which is mounted to the axle hub.

Two stage hydraulics

The machine is equipped with a two mode active working system, a great improvement on the already well received two stage hydraulic system. This system provides the most efficient hydraulic flow for your operation. The active working switch has two modes: powerful loading or normal loading. In powerful loading mode hydraulic flow towards the work equipment can be increased and reduced as and when required. In normal loading mode all hydraulic flow is transferred directly to the work equipment.

Variable transmission cut-off system

The operator can set the transmission cut-off pressure desired for the left brake pedal using the switch located on the right-side control panel. The operator can improve the working performance by setting the cut-off pressure properly depending on working condition. High cut-off pressure for digging operations. Low cut-off pressure for truck-loading operations.

Engine pre-lube system

Durability of the engine is improved by raising the engine oil pressure before starting the engine. When the operator turns the key, the pre-lubrication pump sends oil from the engine oil pan to the engine oil filter and raises the pressure of that oil to the set pressure. Then, the starting motor rotates to start the engine.

Excellent operator comfort

Advanced Joystick Steering System (AJSS) controlElectronically controlled ECMV automatic transmissionLow sound levelsElectronically controlled transmission leverPillar-less large cab with ROPS/FOPS canopy.

Low noise design

The noise levels are substantially reduced. Engine compartment noise isolation plus the specially designed low speed radiator cooling fan give reduced noise levels.

Two-door, walk-through cab

Komatsu is offering the safest cabin on the market, with an easy entry and exit from both sides of the cab.

Cabin damper mounting for low vibration levels

The silicone oil filled rubber mounts result in reducing the fatigue caused by mechanical vibrations and noise. This helps the operator to remain productive the whole day. It also increases the lifetime of all operator compartment components.

Pillar-less large cab

A wide pillar-less windscreen provides excellent front visibility. The wiper arm covers a large area to provide great visibility even on rainy days. The cab area is the largest in its class providing maximum space for the operator.

Advanced Joystick Steering System (AJSS) control

This system provides a precise steering operation that’s sometimes needed on narrow, long quarry roads. The joystick steering is also ideal in V-shape cycle loading.

Steering wheel with telescopic/tilt column

As an alternative to the AJSS system, a steering wheel is also available. The operator can tilt and telescope the steering column to provide a comfortable working position.

Rear access stairs

For all access and egress to the machine, a rear access stair with safety rail is provided. The step width, clearance, and step angle have been designed with the operator’s safety in mind. A step light provides light for night boarding.

Universal buckets

This type of bucket with a long, flat bucket floor features an outstanding material retaining capacity. The universal bucket can be equipped with a V-shaped edge, bolt on edge or flush mount adapters and interchangeable Kmax™ teeth.

Extra heavy-duty rock buckets with KVX™ teeth

XHD rock buckets with KVX™ teeth as well as bolt on segments are available for highly abrasive materials. This extremely durable system as well as the standard stone deflectors guarantee maximum service life even under the most severe operating conditions. A bolt on teeth system reduces welding on the bucket.

Ultra-wear resistant ground engaging equipment – Lower costs per tonne

With the brands Komatsu KVX™, Kmax™ and Hensley™, parts, Komatsu has extensive know-how, making it a leading supplier of GET in the global market. The comprehensive range of ultra-wear resistant teeth, segments and wear plates covers all applications even under the toughest working conditions.