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Wheel Loaders WA900-3
Features
Power, stability and maneuverability. That’s what you get with the 17.0 yd3, 856 hp, WA900-3. High stability when digging in the pile and when maneuvering, the WA900-3 is a production loader that can exceed your demands. Using the advanced joystick steering, the operator has the precise control and nimble feel to make him think he’s operating a loader half its size.
Specifications
| Engine | ||
| Model | Komatsu SAA12V140E-3 | |
| Type | Water-cooled, 4 cycle | |
| Aspiration | Turbocharged, air-to-air aftercooled | |
| Number of cylinders | 12 | |
| Bore x stroke | 5.51'' x 6.50'' | 140 mm x 165 mm |
| Piston displacement | 1,860 in³ | 30.48 ltr |
| Governor | all-speed, electronic | |
| Flywheel horsepower | ||
| SAE J1995 - Gross | 900 HP | 672 kW |
| ISO 9249/SAE J1349 - Net | 856 PS | 638 kW |
| Rated rpm | 2050 rpm | |
| Fan drive method for radiator cooling | Mechanical | |
| Fuel system | Direct injection | |
| Lubrication system | ||
| Method | Gear pump, force-lubrication | |
| Filter | Full-flow and bypass combined | |
| Air cleaner | Dry type with automatic dust ejector and pre-cleaner, cyclopac with vacuator | |
| Transmission | ||
| Torque converter - Type | 3-element, single-stage, single-phase | |
| Transmission - Type | Full-powershift, planetary type | |
| Travel Speed* | ||
| 1st Forward | 4.3 mph | 7.0 km/h |
| 1st Reverse | 4.4 mph | 7.1 km/h |
| 2nd Forward | 7.6 mph | 12.3 km/h |
| 2nd Reverse | 7.7 mph | 12.4 km/h |
| 3rd Forward | 17.4 mph | 28.0 km/h |
| 3rd Reverse | 17.6 mph | 28.3 km/h |
| Axles and Final Drives | ||
| Drive system | Four-wheel drive | |
| Front | Fixed, full-floating | |
| Rear | Center-pin support, full-floating, 22° total oscillation | |
| Reduction gear | Spiral bevel gear | |
| Differential gear | Straight bevel gear | |
| Final reduction gear | Planetary gear, single reduction, oil bath | |
| Brakes | ||
| Service brakes | Hydraulically actuated, wet disc brakes actuate on four wheels | |
| Parking brake | Dry disc brake | |
| Secondary brake | Parking brake is commonly used | |
| Steering System | ||
| Type | Articulated type, full-hydraulic power steering | |
| Steering angle | 40° each direction | |
| Minimum turning radius at the center of outside tire | 30'2" | 9200 mm |
| Hydraulic System | ||
| Steering system: | ||
| Hydraulic pump | Piston pump | |
| Capacity / at rated rpm | 83.2 U.S. gal/min | 315 ltr/min |
| Relief valve setting | 4,977 psi | 34.3 MPa / 350 kgf/cm² |
| Hydraulic cylinders: | ||
| Type | Double-acting, piston type | |
| Number of cylinders | 2 | |
| Bore x stroke | 6.3" x 19.8" | 160 mm x 503 mm |
| Loader control: | ||
| Hydraulic pump | Piston pump | |
| Capacity / at rated rpm | 109.6 U.S. gal/min | 415 ltr/min |
| Relief valve setting | 4,977 psi | 34.3 MPa / 350 kgf/cm² |
| Hydraulic cylinders: | ||
| Type | Double-acting, piston type | |
| Number of cylinders—bore x stroke: | ||
| Boom cylinder - 2 | 10.2" x 53.9" | 260 mm x 1368 mm |
| Bucket cylinder - 1 | 11.8" x 35.7" | 300 mm x 906 mm |
| Control valve | Spool type | |
| Control positions: | ||
| Boom | Raise, hold, lower, and float | |
| Bucket | Tilt-back, hold, and dump | |
| Hydraulic cycle time (rated load in bucket): | ||
| Raise | 11.2 sec | |
| Dump | 2.0 sec | |
| Lower (Empty) | 4.8 sec |
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