Productivity Features • High performance Komatsu SAA6D140E-5 engine Net horsepower 371 kW 498 HP • Variable horsepower system • Automatic Idling Setting System (AISS) • 7-speed, fully automatic K-ATOMiCS transmission • Fully hydraulic controlled wet multiple-disc brakes and retarder; Retarder absorbing capacity (Continuous descent) 662 kW / 887 HP • Long wheelbase and wide tread • Large high strength body Heaped capacity 27.3 m³ / 35.7 yd³ • Tight turning radius 7.2 m / 23'7" • Automatic Retard Speed Control (ARSC) (Option) Reliability Features • Komatsu designed components • Box-section frames • Rugged and durable dump body design • Reliable hydraulic system • Sealed DT electrical connectors • Pedal-operated secondary brake Environment Friendly • Komatsu SAA6D140E-5 engine is North American EPA Tier 3 and EU Stage 3A emission certified for 2006 • Low noise levels • Lead-free radiator • Brake cooling oil recovery tank 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. Operator Environment • Wide, spacious cab with excellent visibility • Ergonomically designed cab • Easy-to-see instrument panel • Tiltable, telescoping steering wheel and low effort pedals • K-ATOMiCS with “Skip-Shift” function • Hydropneumatic suspension • Built-in ROPS/FOPS Level 2 • Viscous cab mounts • Electric body dump control lever • Supplementary steering and secondary brakes • Air suspension seat (Option) Easy Maintenance • Advanced monitoring system-onboard diagnostics • Wet multiple-disc brakes and fully hydraulic braking system • Extended oil change interval • Centralized arrangement of filters • Flange type tire rims • Electric circuit breaker • Centralized greasing points • KOMTRAX^®

Engine

Model		KOMATSU SAA6D140E-5
Type		Water-cooled, 4-cycle
Aspiration		Turbo-charged and air-to-air after-cooled
Number of cylinders		6
Bore x stroke	5.5" x 6.5"	140 mm x 165 mm
Piston displacement	930 in3	15.24 ltr.
Horsepower:
SAE J1995	518 HP	386 kW
ISO 9249 /SAE J1349	498 HP	371 kW
Rated rpm		2,000 rpm
Fan drive type.		Mechanical
Maximum torque.	1600 Ib•ft	221 kg•m
Fuel system		Direct injection
Governor		Electronically controlled
Lubrication system:
Method		Gear pump, force-Iubric
Filter		Full-flow type
Air cleaner		Dry type with double elements and precleaner, plus dust indicator

Transmission

Torque converter		3-elements, 1-stage, 2-phase
Transmission		Full-automatic, planetary type
Speed range		7 speeds forward and 1 reverse
Lockup clutch		Wet, single-disc clutch
Forward		Torque converter drive in 1st gear, direct drive in 1st lockup and all higher gear
Reverse		Torque converter drive
Shift control		Electronic shift control with automatic clutch modulation in all gear
Maximum travel speed	43.5 mph	70.0 km/h

Axles

Rear Axle		Full-floating
Final drive type		Planetary gear
Ratios:
Differential		3.125
Planetary		4.737

Suspension System

Independent, hydropneumatic suspension cylinder with fixed throttle to dampen vibration.
Effective cylinder stroke (front suspension)	9.8"	250 mm
Rear axle oscillation:
Oil stopper		6.8°
Mechanical stopper		8.1°

Steering System

Type		Fully hydraulic power steering with two double-acting cylinders
Supplementary steering		Manually controlled (meets ISO 5010, SAE J1511 and SAE J53)
Minimum turning radius	23'7"	7.2 m
Maximum steering angle (outside tire)		43°

Cab

Type

Box-sectioned structure

Main Frame

Type

Box-sectioned structure

Brakes

Brakes meet ISO J3450 and SAE J1473 standards.
Service brakes:
Front		Full-hydraulic control, caliper disc type
Rear		Full-hydraulic control, oil-cooled multiple-disc type
Parking brake		Spring applied, multiple-disc type
Retarder		Oil-cooled, multiple-disc rear brakes act as retarder.
Secondary brake		Manual pedal operation When hydraulic pressure drops below the rated level, parking brake is automatically actuated
Brake surface:
Front	150 in²	968 cm²
Rear	7,881 in²	50847 cm²

Body

Capacity:
Struck	26.2 yd³	20 m³
Heaped (2:1, SAE)	35.7 yd³	27.3 m³
Payload	45.2 U.S. tons	41.0 metric tons
Material (high tensile strength steel)	227,520 psi	160 kg/mm²
Structure		V-shape body
Material thickness:
Bottom	0.98"	25 mm
Front	0.63"	16 mm
Sides	0.55"	14 mm
Target area: (inside length x width)	18'4" x 11'1"	5590 mm x 3380 mm
Dumping angle		48°
Height at full dump	26'0"	7925 mm
Heating		Exhaust heating

Hydraulic System

Hoist cylinder		Twin, 2-stage telescopic type
Relief pressure	2,990 psi	210 kg/cm² 20.6 MPa
Hoist time		10 sec

Weight (approximate)

Empty weight	75,840 lb	34400 kg
Gross vehicle weight with 41 metric ton 45.2 U.S. ton payload	164,200 lb	74480 kg
Max. gross vehicle weight Standard tire	165,520 lb	75080 kg
Not to exceed max. gross vehicle weight, including options, fuel
Weight distribution:
Empty:
Front axle		50.7%
Rear axles		49.3%
Loaded:
Front axle		32.8%
Rear axles		67.2%

Tires

Standard tire

18.00 R33

Service Refill Capacities

Fuel tank	127.9 U.S. Gal	484 ltr.
Engine oil	13.2 U.S. Gal	50 ltr.
Torque converter, transmission and retarder cooling	23.8 U.S. Gal	90 ltr.
Differentials (total)	11.9 U.S. Gal	45 ltr.
Final drives (total)	7.9 U.S. G	30 ltr.
Hydraulic system	34.1 U.S. Gal	129 ltr.
Suspension (total)	11.7 U.S. Gal	44.2 ltr.