Hydrostatic Transmission: ■ Quick Acceleration ■ Dynamic Braking ■ Variable Speed Traction Control ■ Creeping Mode Komatsu SmartLoader Logic helps reduce fuel consumption with no decrease in production. A powerful Komatsu SAA6D107E-2 engine provides a net output of 123 kW / 165 HP with up to 10% improved fuel consumption. This engine is EPA Tier 4 Interim and EU stage 3B emissions certified. Komatsu Variable Geometry Turbocharger (KVGT) uses a hydraulic actuator to provide optimum air flow under all speed and load conditions. Komatsu Diesel Particulate Filter (KDPF) captures 90% of particulate matter and provides automatic regeneration that does not interfere with daily operation. Increased cooling capacity ■ Auto-reversing fan is standard ■ Wider core coolers An all new cab provides the operator with improved comfort and visibility. New high resolution monitor panel ■ Enhanced and intuitive on-board diagnostics ■ Integrated with KOMTRAX Level 4 ■ Integrated with Komatsu Tier 4 technology Rearview monitoring system (standard) New high capacity air suspension seat ■ Seat mounted EPC controls with F-N-R switch ■ Seat heater is standard Energy saving guidance ■ Six operator guiding messages ■ Enhanced eco-gauge Komatsu Auto Idle Shutdown helps reduce idle time and reduce operating costs. Remote boom positioner can set kickout. Variable displacement piston pumps with CLSS help reduce fuel consumption. KOMTRAX equipped machines can send location, SMR and operation maps to a secure website utilizing wireless technology. Machines also relay error codes, cautions, maintenance items, fuel levels, and much more.

Engine

Model		Komatsu SAA6D107E-2*
Type		Water-cooled, 4-cycle
Aspiration		Turbo-charged, after-cooled, cooled EGR
Number of cylinders		6
Bore x stroke	4.21" x 4.88"	107 mm x 124 mm
Piston displacement	408 in³	6.69 ltr
Governor		All-speed, electronic
Horsepower:
Gross - SAE J1995	170 HP	127 kW
Net - ISO 9249/SAE J1349	165 HP	123 kW
Rated rpm		2100 rpm
Max power - ISO 14396 @ 1900 rpm	169 HP	126 kW
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 4 Interim and EU stage 3B emissions certified

Transmission

Transmission		Hydrostatic, 1 pump, 2 motors with speed range select
Travel Speed:	Forward	Reverse
1st	0.6 - 8.1 mph	0.6 - 8.1 mph
2nd	8.1 mph	8.1 mph
3rd	11.6 mph	11.6 mph
4th	23.6 mph	23.6 mph
Measured with 20.5-25 tires

Axles and Final Drives

Drive system		Four-wheel drive
Front		Fixed, semi-floating
Rear		Center-pin support, semi-floating, 24° total oscillation
Reduction gear		Spiral bevel gear
Differential gear		Torque proportioning
Final reduction gear		Planetary gear, single reduction

Brakes

Service brakes		Hydraulically actuated, wet disc brakes actuate on four wheels
Parking brake		Wet, multi-disc brake on transfer output shaft
Emergency brake		Parking brake is commonly used

Steering System

Type		Articulated type, fully-hydraulic power steering
Steering angle		38.5° each direction (40° to max end stop)
Minimum turning radius at the center of outside tire	17'8"	5380 mm

Hydraulic System

Steering system:
Hydraulic pump		Piston pump, in common with loader control
Capacity (at rated rpm)	47.6 U.S. gal/min	180 ltr/min
Relief valve setting	3,000 psi	20.6 MPa 210 kgf/cm²
Hydraulic cylinders:
Type		Double-acting, piston type
Number of cylinders		2
Bore x stroke	2.76" x 17.8"	70 mm x 453 mm
Loader control:
Hydraulic pump		Piston pump, in common with steering system
Capacity (at rated rpm)	47.6 U.S gal/min	180 ltr/min
Relief valve setting	4,410 psi	310 kg/cm² 30.4 MPa
Hydraulic cylinders:
Type		Double-acting, piston type
Number of cylinders:	bore x stroke:	bore x stroke:
Boom cylinder / 2	4.7" x 28.7"	120 mm x 729 mm
Bucket cylinder / 1	5.9" x 22"	150 mm x 558 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		6.1 sec
Dump		1.9 sec
Lower (empty)		3.5 sec

Service Refill Capacities

Cooling system	7.4 U.S. gal	28 ltr
Fuel tank	64.7 U.S. gal	245 ltr
Engine	6.1 U.S. gal	23 ltr
Hydraulic system	23.7 U.S. gal	90 ltr
Axle front	7.1 U.S. gal	27 ltr
Axle rear	6.7 U.S. gal	25.5 ltr
Transfer case	1.5 U.S. gal	5.8 ltr