Earthmoving Machines WA900-8R Wheel Loaders Komatsu Wheel Loaders WA900-8R

Model . . . . . . . . . . . . . . . . . . . . . . . . . . Komatsu SAA12V140E-7
Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Water-cooled, 4-cycle
Aspiration . . . . . . . . . . . . . . . . . . . . . . Turbocharged, aftercooled
Number of cylinders . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Bore x stroke . . . . . . . . . . . . . . . . . . . . . . . . . . 140 mm x 165 mm
Piston displacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30.48 L
Governor . . . . . . . . . . . . . . . . . . . . . . . . . . . All-speed, electronic
Horsepower
SAE J1995 . . . . . . . . . . . . . . . . . . . . . . . Gross 672 kW 900 HP
ISO 9249/SAE J1349 . . . . . . . . . . . . . . . . . Net 671 kW 899 HP
Rated rpm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2050 min-1
Fan drive method for radiator cooling . . . . . . . . . . . . . .Hydraulic
Fuel system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Direct injection
Lubrication system:
Method . . . . . . . . . . . . . . . . . . . . . Gear pump, force-lubrication
Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Full-flow type
Air cleaner . . . . . . . . . . . . . . . Dry type with double elements and
dust evacuator, plus dust indicator
U.S. EPA Tier 2 emission equivalent.

Drive system . . . . . . . . . . . . . . . . . . . . . . . . . . . . Four-wheel drive
Front . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Fixed, full-floating
Rear . . . . . . . . . . . . . . . . . . . . . . Center-pin support, full-floating, 20° total oscillation
Reduction gear . . . . . . . . . . . . . . . . . . . . . . . . . . Spiral bevel gear
Differential gear . . . . . . . . . . . . . . . . . . . . . . . . .Conventional type
Final reduction gear . . . . . . . . . . Planetary gear, single reduction

Service brakes . . . . . . . . . . . . . . . . . . . . . . Hydraulically actuated, wet multiple-disc brakes actuate on four wheels
Parking brake . . . . . . . . . . . . . . . . . . . . . Wet multiple-disc brake
Secondary brake . . . . . . . . . . . One of dual service brake circuits is commonly used.

Type . . . . . . . . . . . .Articulated type, full-hydraulic power steering
Steering angle . . . . . . . . . . . . . . . . . . . . . . . . . . 40° each direction Minimum turning radius at
the center of outside tire . . . . . . . . . . . . . . . . . . . . . . . . .9880 mm

Steering system:
Hydraulic pump . . . . . . . . . . . . . . . . . . . . . . . . . . . Piston pump
Capacity . . . . . . . . . . . . . . . . . . . . . .2 x 220 L/min at rated rpm
Relief valve setting . . . . . . . . . . . . . . . . . 31.4 MPa 320 kgf/cm2
Hydraulic cylinders:
Type . . . . . . . . . . . . . . . . . . . . . . . . Double-acting, piston type
Number of cylinders . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Bore x stroke . . . . . . . . . . . . . . . . . . . . . . 160 mm x 576 mm
Loader control:
Hydraulic pump . . . . . . . . . . . . . . . . . . . . . . . . . . . Piston pump
Capacity . . . . . . . . . . . . . . . . . . . . . .4 x 230 L/min at rated rpm
Relief valve setting . . . . . . . . . . . . . . . . . 34.3 MPa 350 kgf/cm2
Hydraulic cylinders:
Type . . . . . . . . . . . . . . . . . . . . . . . . Double-acting, piston type
Number of cylinders – bore x stroke:
Lift cylinder . . . . . . . . . . . . . . . . . . . . 2 – 260 mm x 1495 mm
Bucket cylinder . . . . . . . . . . . . . . . . . . 1 – 300 mm x 995 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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10.1 s
Dump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.9 s
Lower (Empty) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.8 s

Cooling system  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .355 L
Fuel tank (Specified capacity) . . . . . . . . . . . . . . . . . . . . . . .1555 L
Engine  . .  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .108 L
Hydraulic system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1020 L
Axle front . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .370 L
rear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .370 L
Torque converter and transmission . . . . . . . . . . . . . . . . . . .180 L

• ENGINE
  • Air cleaner, double element with dust indicator
  • Alternator, 24 V/140 A
  • Batteries, large capacity, 4 x 12 V/160 Ah
  • Engine, Komatsu SAA12V140E-7
  • Starting motor, 2 x 24 V/11 kW
• CAB
  • 2 x DC12V electrical outlets
  • Advanced joystick steering system
  • Auto air conditioner
  • Ashtray
  • Cigarette lighter
  • Color multi-monitor
  • Cup holder
  • Electronic Pilot Control fingertip control
  • Floor mat
  • Front wiper (with washer and intermittent)
  • Operator seat with 2-point seat belt, reclining, air suspension type
  • Radio: AM/FM with AUX terminal, USB port for charging and Bluetooth
  • Rear defroster (electric)
  • Rear wiper (with washer and intermittent)
  • Room mirror
  • Room lamps, LED
  • ROPS/FOPS (ISO 3471/ISO 3449)
  • Space for lunch box
  • Spot lamp, LED
  • Steel cab included front, rear and side wiper with windshield washer
  • Sun visor (front)
  • Trainer seat with 2-point seat belt
• LIGHTING SYSTEM
  • Access stair lamp, LH side, LED
  • Directional signal
  • Hazard lamps
  • Headlamps, LED
  • Front work lamps, LED
  • Rear work lamps, LED
  • Side work lamps, LED
  • Stop and tail lamps and turn signal lamps, LED
• SAFETY EQUIPMENT
  • Back-up alarm
  • Engine shutdown secondary switch
  • Hand rails for platform
  • Horn, electric
  • Parking brake, electric
  • Rear view monitoring system
  • Secondary brake
  • Secondary steering (ISO 5010)
  • Service brakes, wet disc type
• TIRES
  • 45/65R45 (L-5) tubeless
• OTHER
  • 2-way engine power mode
  • 3rd gear prohibition and speed limit control
  • Automatic digging system
  • Automatic shift transmission
  • Battery disconnect switch
  • Boom positioner with kick-out
  • Brake cooling system
  • Brake oil thermometer display
  • Bucket positioner
  • Circuit breaker
  • Counterweight
  • ECO guidance, ECO gauge
  • Engine RPM set system with auto deceleration
  • Front fenders
  • Fuel pre-filter with water separator
  • Hydraulic-driven fan with reverse rotation
  • Inline filters, steering and hydraulic
  • Komatsu auto idle shutdown
  • Komatsu SmartLoader Logic
  • KOMTRAX Plus
  • Lift cylinders and bucket cylinder
  • Load meter system
  • Modulation clutch
  • Modular radiator core
  • Radiator mask, swing out
  • Rear access stair with handrail
  • Semi-auto approach & dump system
  • Sweeper wing
  • Tire slip control
  • Tool kit
  • Wall digging protection control
  • Work equipment shock reduction control

• 3-point seat belt with ventilation
  • Auto greasing system
  • Beacon lamp
  • Electronically Controlled Suspension System
  • Emergency engine stop switch
  • Engine bay lamp, LED
  • Engine pre-lubrication
  • Engine starter disconnect switch
  • Fire extinguisher
  • Fog lamp, LED
  • Heated mirrors (for cold district)
  • High lift boom
  • KomVision system (with radar/radar less)
  • KOWA sampling port
  • Machine lock out system
  • Oil heater system (for cold district)
  • Operator seat, reclining, suspension type with 2-point retractable 78 mm width seat belt
  • Ordinary spare parts
  • Power ladder
  • Power train guard
  • Quick coupling for fuel tank
  • Rear corner additional work lamp, LED
  • Service center, engine, transmission, break oil, and coolant
  • Starter receptacle
  • Sun shades (front and rear), retractable type
  • Trainer seat with 3-point seat belt
  • Various bucket options
  • Various tire options, radial