Productivity and Economy Features • High performance Komatsu SDA12V160 engine Net horsepower 1048kW 1,406HP • Komatsu 7 speed, electronically controlled automatic powershift transmission • 4-wheel oil-cooled, multiple-disc retarder • Automatic Retard Speed Control (ARSC) standard Reliability Features • Flat face-to-face O-ring seals • Sealed DT connectors • Fully hydraulic brakes - no air system Operator Environment and Control • Spacious cab with excellent visibility • Ergonomically-designed cab • Easy-to-see instrument panel • Advanced K-ATOMiCS with “Skip-shift” function • Built-in ROPS/FOPS cab (Level 2) • Parking brake on input shaft • Supplementary steering • Push-button operated secondary brake Easy Maintenance • Oil-cooled multiple-disc brakes and fully hydraulic-controlled braking system • Electric circuit breakers • Vehicle Health Monitoring System (VHMS) • Remote mounted transmission

Engine

Model		Komatsu SDA12V160
Type		Water-cooled, 4-cycle
Aspiration		Turbo-charged, after-cooled
Number of cylinders		12
Bore x Stroke	6.26" x 7.48"	159 mm x 190 mm
Piston displacement	2,746 in³	45 ltr
Horsepower:
SAE J1995 / Gross	1,487 HP	1109 kW
ISO 9249 / SAE J1349 / Net	1,406 HP	1048 kW
Rated rpm		1,900 rpm
Fan drive type		Mechanical
Maximum torque	5,041 lb ft	697 kg•m
Fuel system		Direct injection
Governor		Electronic control
Lubrication system:
Method		Gear pump, force-lubrication
Filter		Full-flow type
Air cleaner		Dry type with double elements and pre-cleaned, with dust indicator

Transmission

Torque converter		3-elements, 1-stage, 2-phase
Transmission		Full-automatic, planetary-shaft type
Speed range		7 speeds forward and 1 reverse
Lockup clutch		Wet, multiple-disc clutch
Forward		Torque converter drive 1st and 2nd gear with direct drive lock-up in 1st through 7th
Reverse		Torque converter drive
Shift control		Electronic shift control with automatic clutch modulation in all gears
Maximum travel speed	36 mph	58 km/h

Axles

Rear axles		Full-floating
Final drive type		Planetary gear
Ratios:
Differential		2.647
Planetary		7.235

Suspension System

Variable rate, hydropneumatic with integral rebound control.
Maximum front stroke	14.76''	375 mm
Maximum rear stroke	4.17"	106 mm
Rear axle oscillation		+/-9.2°

Steering System

Type		Fully hydraulic power steering with two double-acting cylinders
Supplementary steering		Accumulator assist
Minimum turning radius	40'	12.2 m
Steering angle (left or right)		41°

Cab

Type

Box-sectioned structure

Main Frame

Type

Box-sectioned structure

Brakes

Service brakes:
Front		Fully hydraulic control, oil-cooled multiple-disc type
Rear		Fully hydraulic control, oil-cooled multiple-disc type
Parking brake		Spring applied, oil-released, 3 caliper dry disc mounted on input yoke to differential
Retarder		Oil-cooled, multiple-disc front and rear brakes act as retarder
Secondary brake		Manual - push button operated. Automatically applied prior to hydraulic system pressure dropping below established level.
Braking surface	24,668 in²	159148 cm³

Body

Capacity:
Struck	71 yd³	54 m³
Heaped (2:1, SAE)	102 yd³	78 m³
Nominal payload	158.9 U.S. tons	144.1 metric tons
Material		400 Brinell hardness high tensile strength steel (front, sides, and bottom)
Structure		Flat floor configuration
Material thickness:
Bottom	0.75"	19 mm
Front	0.47"	12 mm
Sides	0.35"	9 mm
Target area (inside length x width)	25'2"x 18'9"	7670 mm x 5705 mm
Dumping angle		45°
Height at full dump	37'6"	11440 mm
Heating		Exhaust heating

Hydraulic System

Hoist cylinder		Two, 3-stage telescopic type
Relief pressure	2,750 psi	19.0 MPa 193.4 kg/cm²
Hoist time:
Raise		15 sec
Lower		15 sec

Weight (approximate)

Empty weight	232,144 lb	105300 kg
Max. gross vehicle weight	550,000 lb	249478 kg
Not to exceed max. gross vehicle weight, including options, fuel and payload. Empty weight is with 100% fuel and operator.
Weight distribution:
Empty:
Front axle		48.6%
Rear axle		51.4%
Loaded:
Front axle		32.8%
Rear axle		67.2%

Tires

Standard tire

33.00 R51

Service Refill Capacities

Fuel tank	560 U.S. gal	2120 ltr
Engine oil	51 U.S. Gal	193 ltr
Hydraulic system	238 U.S. gal	900 ltr
Differential	78 U.S. gal	297 ltr
Final drives (total)	63.5 U.S. gal	240 ltr
Transmission	40.5 U.S. gal	153 ltr