HD405-7 Dump Trucks

SPECIFICATIONS

Engine

Model	Komatsu SAA6D140E-5
Type	Four-cycle, water-cooled, direct injection
Aspiration	Turbo-charged, after-cooled, cooled EGR
Number of cylinders	6
Bore x stroke	140 mm x 165 mm
Displacement	15.24 ltr
Horsepower, Gross - SAE J1995	386 kW / 518 HP
Horsepower, Net - ISO 9249 / SAE J1349	371 kW / 498 HP
Rated RPM	2000
Fan drive method	Mechanical
Emissions certification	EPA Tier 3

Axles

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

Body

Capacity, struck	20 m3
Capacity, heaped (2:1 SAE)	27.3 m3
Payload	41000 kg
Target area (inside length x width)	5590 mm x 3380 mm
Heating	Exhaust heating
Material	160 kg/mm2 high tensile strength steel
Material thickness:
Bottom	25 mm
Front	16 mm
Sides	14 mm

Brakes

Standard	ISO3450, SAE1473
Service brake - front	Full-hydraulic control, caliper disc type
Service brake - rear	Full-hydraulic control, oil-cooled multiple-disc type
Parking brake	Spring applied, caliper disc type
Retarder	Oil cooled, multiple-disc rear brakes act as retarder
Secondary brake	Manual pedal operation. When hydraulic pressure drops below rated level, parking brake automatically actuated
Brake surface:
Front	968 cm2
Rear	50847 cm2

Cab

Standard ISO3471, SAEJ1040-1988c (ROPS)
Hydraulic System

Hoist cylinder Twin, two-stage telescopic type
Relief pressure 20.6 MPa 210 kg/cm2
Hoist time 10 sec
Main Frame

Type Box-sectioned structure
Service Refill Capacities

Fuel tank 484 ltr
Engine oil 50 ltr
Torque converter, transmission and retarder cooling 90 ltr
Differentials 45 ltr
Final drives (total) 30 ltr
Hydraulic system 129 ltr
Suspension (total) 44.2 ltr

Steering System

Type	Fully hydraulic power steering with two double-acting cylinders
Supplementary steering	Manual control (meets ISO5010, SAEJ1511 and SAEJ53)
Minimum turning radius, wall to wall	7.2 m
Maximum steering angle	43°

Suspension System

Independent , hydro-pneumatic suspension cylinder with fixed throttle to dampen vibration

Effective cylinder stroke (front suspension) 250 mm
Rear axle oscillation:
Oil stopper 6.8°
Mechanical stopper 8.1°

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 gears
Reverse	Torque converter drive
Shift control	Electronic shift control with automatic clutch modulation in all gears
Maximum travel speed	70 km/h

Tyres

Standard tyre 18.00 R33
Weight (Approximate)

Empty and Gross Weight:

Empty weight 34400 kg

Gross vehicle weight (loaded) 74480 kg

Max. gross vehicle weight 75080 kg

Weight Distribution:

Empty:

Front axle 50.7%

Rear axle 49.3%

Loaded:

Front axle 32.8%

Rear axle 67.2%

Komatsu’s 40 tonne capacity HD405-7 truck has been specifically developed for quarry, construction and small-scale mining operations. These trucks are recognised for their advanced transmission and braking systems that ensure optimum traction and the industry’s highest safety standards. As with all our trucks, key components are designed and manufactured by Komatsu to work together in an integrated package. And it comes standard with our Komtrax remote monitoring and location system, backed by our Australia-wide service and support network.