High Productivity & Low Fuel Consumption • High performance SAA12V140E-3 engine • Low fuel consumption • Dual-mode active working power select system • Large dumping clearance Excellent Operator Environment • Automatic transmission with Electronicallly Controlled Modulation Value (ECMV) • Advanced Joystick Steering System (AJSS) • Roomy, quiet cab with power windows • Low vibration & noise • Pillar-less large cab with ROPS/FOPS Level 2 canopy • Comfortable operator’s seat Harmony with the Environment • EPA Tier 2 emissions certified • Low fuel consumption Reliability • Reliable Komatsu designed and manufactured components • Sturdy main frame • Adjustment-free, fully hydraulic, wet disc brakes • Hydraulic hoses use flat face O-ring seals • Cathion electrodeposition process is used to apply primer paint • Powder coating process is used to apply main structure paint • Sealed DT connectors for electrical connections Easy Maintenance • Simple checks • KOMTRAX Plus • Rear access stairs • Auto greasing system

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	853 HP	636 kW
ISO 9249/SAE J1349 - Net	808 PS	603 kW
Rated rpm		2000 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
EPA Tier 2 emissions certified.

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
*Measured with 45/65-45, 46PR (L-5)

Axles & 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	81 U.S. gal/min	307 ltr/min
Relief valve setting	4,550 psi	31.4 MPa 320 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	107 U.S. gal/min	405 ltr/min
Relief valve setting	4,550 psi	31.4 MPa 320 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

ROPS and Cab

Cooling system	89.0 U.S. gal	337 ltr
Fuel tank	410.8 U.S. gal	1555 ltr
Engine	34.3 U.S. gal	130 ltr
Hydraulic system	191.5 U.S. gal	725 ltr
Axle (each front and rear)	95.1 U.S. gal	360 ltr
Torque converter and transmission	37.0 U.S. gal	140 ltr

Service Refill Capacities

Cooling system	89.0 U.S. gal	337 ltr
Fuel tank	410.8 U.S. gal	1555 ltr
Engine	34.3 U.S. gal	130 ltr
Hydraulic system	191.5 U.S. gal	725 ltr
Axle (each front and rear)	95.1 U.S. gal	360 ltr
Torque converter and transmission	37.0 U.S. gal	140 ltr