User manual KOMATSU WA250-5 BROCHURE

[. . . ] This engine meets Tier 2 EPA, EU and Japanese emission regulations without sacrificing power or machine productivity. When high drive torque is needed for digging, climbing or initiating movement, the pump feeds both motors. Under deceleration, the HST system acts as a dynamic brake on the mechanical drive system. [. . . ] Full auto-shifting eliminates any gear shifting and kickdown operation to allow the operator to concentrate on digging and loading. Variable Shift Control Traction Control Reduced Transfer case Low speed piston motor Engine Piston Pump To differentials High speed piston motor 0 0 2 4 8 12 16 10 20 km/h 12 MPH 0 0 2 4 8 12 16 10 20 km/h 12 MPH Tractive effort Variable range of travel speed Tractive effort 4 6 8 Travel speed 4 6 8 Travel speed 4 5 WA250-5 W HEEL L OADER Fully Hydraulic Wet Multi-disc Service Brakes The dual wet disc brakes at each wheel are fully sealed and adjustment free to reduce contamination, wear and maintenance. Added dependability is designed into the braking system by the use of two independent hydraulic circuits, providing hydraulic backup should one of the circuits fail. If the brake oil pressure drops, the warning lamp flashes and the warning buzzer sounds intermittently. The parking brake is mechanically controlled by a lever in the cab. WHEEL LOADER Flat Face-to-Face O-Ring Seals Flat face-to-face O-ring seals are used to securely seal all hydraulic hose connections and to prevent oil leakage. WA250-5 INCREASED RELIABILITY AND SERVICEABILITY Main Monitor - EMMS (Equipment Management Monitoring System) Komatsu's new main monitor keeps the operator informed of all machine functions at a glance. The monitor is located behind the steering wheel and displays various different machine functions including fluid/filter change intervals and troubleshooting memory display functions. The main gauges are analog type for easy viewing and other functions utilize light symbols or LCD readouts. nipple Full Side-Opening Gull-Wing Engine Doors Ground level engine service and daily service checks are made easy with the gas spring assisted full side opening gull-wing doors. hose O-ring Cathion Electrodeposition Primer Paint/Powder Coating Final Paint Cathion electrodeposition paint is applied as a primer paint and powder coating is applied as a topcoat to the exterior metal sheet parts. This process results in a durable rust-free Parking Brake Service Brakes machine, even in the most severe environments. Some external parts are made of plastic to provide long life and high impact resistance. Sealed DT Connectors Extended Service Interval Swing-Out Radiator The new Komatsu cooling system is isolated from the engine to provide more efficient cooling and low noise. The swing-out hydraulic fan allows the operator to quickly clean out the cooling system. The radiator, air-to-air cooler and oil cooler are mounted side-by-side for more efficient cooling and easy cleaning. A fully-opening, gas spring assisted rear grill gives the operator excellent access to the swing-out fan and coolers. Extended engine oil service interval: 250 H 500 H Main harnesses and controller connectors are equipped with sealed DT connectors providing high reliability and dust and corrosion resistance. Komatsu Components Komatsu manufactures the engine, transfer case, differentials and Komatsu Components Engine Extended drive shaft greasing interval: 1, 000 H 4, 000 H High-rigidity Frames The front and rear frames along with the loader linkage have high rigidity to withstand repeated twisting and bending loads to the loader body and linkage. Both the upper and lower center pivot bearings use tapered roller bearings for increased durability. The structure is similar to those of large sized loaders and the reinforced loader linkage ensures high electric parts on this wheel loader. Komatsu loaders are manufactured with an integrated production system under a strict quality control system. Front axle Transfer Rear axle Overrun Prevention System When the machine descends a slope of six degrees or less, maximum travel speed is automatically restricted to approximately 38 km/h 23 MPH, for safety protection against damage of power train components and brakes by sensing the travel speed and controlling the discharge amount of the HST pump and motor. When the machine descends a steep slope and the travel speed reaches 36 km/h 22 MPH, the caution lamp lights up to inform the operator to reduce the travel speed. Note: When the machine descends a steep slope, the use of the service brake is necessary to limit travel speed. strength. 6 7 WA250-5 W HEEL L OADER Tiltable Steering Column The operator can tilt the steering column to allow maximum comfort and control. The two-spoke steering wheel allows maximum visibility of the monitor panel and forward work environment. WHEEL LOADER Comforts of Home The large cab allows room for a large lunch box holder, a variety of cup holders and a hot/cold box storage area. Optional air conditioning and the optional AM/FM stereo cassette system create a comfortable and controlled work environment. WA250-5 OPERATOR COMFORT New Cab Layout Komatsu's new cab layout provides the operator with a roomy, quiet and efficient work environment. [. . . ] gal Digging Depth Breakout Force Operating Weight * Bucket at carry, outside corner of bucket. All dimensions, weights, and performance values based on SAE J732c and J742b standards. Static tipping load and operating weight shown include lubricant, coolant, full fuel tank, ROPS cab and operator. [. . . ]