Komatsu-integrated design
for the best value, reliability, and versatility. Hydraulics, powertrain, frame, and all other major components are engineered by Komatsu. You get a machine whose components are designed to work together for higher production, greater reliability, and more versatility. High Productivity & Low Fuel Consumption • High performance SAA6D170E-5 engine • Low fuel consumption • Dual-mode engine power select system • Automatic transmission with shift timing select system • Lock-up Torque Converter • Variable displacement piston pump & Closed-center Load Sensing System (CLSS) • Increased bucket capacity • Long wheelbase Harmony with Environment • EPA Tier 3 and EU stage 3A emissions certified • Low exterior noise • Low fuel consumption Excellent Operator Environment • Automatic transmission with ECMV • Low-noise designed cab • Electronic controlled transmission lever • Modulated clutch system • Engine RPM set system with auto decel • Electronic Pilot Control levers (EPC) • Pillar-less large ROPS/FOPS Level 2 integrated cab • Easy entry/exit, front-hinged door • Advanced Joystick Steering System (AJSS) Increased Reliability
• Reliable Komatsu designed and manufactured components • Sturdy main frame • Adjustment-free, fully hydraulic, wet disc service and parking brakes • Hydraulic hoses use flat face O-ring seals • Sealed DT connectors for electrical connections Easy Maintenance • Equipment Management Monitoring System (EMMS) • Vehicle Health Monitoring System (VHMS) • Ease of radiator cleaning • Modular radiator core system

Engine

Model		Komatsu SAA6D170E-5
Type		Water-cooled, 4-cycle
Aspiration		Turbocharged, aftercooled, cooled EGR
Number of cylinders		6
Bore x stroke	6.69" x 6.69"	170 mm x 170 mm
Piston displacement	1413 in³	23.15 ltr
Governor		all-speed, electronic
Horsepower:
SAEJ1995 - Gross	530 HP	396 kW
ISO 9249 / SAEJ1349 - Net	527 HP	393 kW
Hydraulic fan at maximum speed	502 HP	374 kW
Rated rpm		1800 rpm
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
EPA Tier 3 and EU stage 3A emissions certified.

Transmission

Torque converter Type		3-element, single-stage, double-phase
Transmission Type		Full-powershift, planetary type
Travel speed measured with 35/65-33 tires:	Forward	Reverse
1st	4.2 mph 6.7 km/h	4.5 mph 7.3 km/h
2nd	7.3 mph 11.7 km/h	8.0 mph 12.8 km/h
3rd	12.6 mph 20.3 km/h	13.7 mph 22.0 km/h
4th	21.0 mph 33.8 km/h	23.0 mph 37.0 km/h

Axles and Final Drives

Drive system		Four-wheel drive.
Front		Fixed, full-floating.
Rear		Center-pin support, full-floating, 26° total oscillation.
Reduction gear		Spiral bevel gear.
Differential gear		Conventional type
Final reduction gear		Planetary gear, single reduction

Brakes

Service brakes:		Hydraulically actuated, wet disc brakes actuate on four wheels
Parking brake:		Wet disc brake
Emergency brake		Parking brake is commonly used

Steering System

Type		Articulated type, full-hydraulic power steering
Steering angle		43° each direction.
Minimum turning radius at the center of outside tire	23'3"	7075 mm

Hydraulic System

Steering system:
Hydraulic pump		Piston pump
Capacity at rated rpm	43.1 U.S. gal/min	163 ltr/min
Relief valve setting	4,980 psi	350 kgf/cm²
Hydraulic cylinders:
Type		Double-acting, piston type
Number of cylinders		2
Bore x stroke	4.5" x 20"	115 mm x 510 mm
Loader control:
Hydraulic pump		Piston pump
Capacity at rated rpm	63.1 + 63.1 U.S. gal/min	239 + 239 ltr/min
Relief valve setting	4,980 psi	350 kgf/cm²
Hydraulic cylinders:
Type		Double-acting, piston type
Number of cylinders:	Bore x Stroke	Bore x Stroke
Boom cylinder / 2	7.9" x 42"	200 mm x 1067 mm
Bucket cylinder / 1	8.9" x 30.6"	225 mm x 776 mm
Control valve		2-spool type
Control positions:
Boom		Raise, hold, lower, and float
Bucket		Tilt-back, hold, and dump
Hydraulic cycle time (rated load in bucket)
Raise		9.3 sec
Dump		2.3 sec
Lower (Empty)		4.1 sec

Service Refill Capacities

Cooling system	38.8 U.S. gal	147 ltr
Fuel tank	189.7 U.S. gal	718 ltr
Engine	22.7 U.S. gal	86 ltr
Hydraulic system	117.0 U.S. gal	443 ltr
Axle (each front and rear)	41.0 U.S. gal	155 ltr
Torque converter and transmission	21.9 U.S. gal	83 ltr