HD785-7

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Engine   
Model    Komatsu SAA12V140E-3 
Type    Water-cooled, 4-cycle 
Aspiration    Turbo-charged, after-cooled 
Number of cylinders    12 
Bore x Stroke  5.51" x 6.50"  140 mm x 165 mm 
Piston displacement  1,860 in  30.48 ltr 
Horsepower     
SAE J1995  Gross 1,200 HP  Gross 895 kW 
ISO 9249 / SAE J1349  Net 1,178 HP  Net 879 kW 
Rated rpm    1,900 rpm 
Fan drive type.    Mechanical 
Maximum torque  3,747 lb ft  518 kgm 
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 2 reverse (RH, RL) 
Lockup clutch.    Wet, multiple-disc clutch 
Forward    Torque converter drive in 1st gear, direct drive in 1st lockup and all higher gears 
Reverse    Torque converter drive, direct drive (lockup) 
Shift control    Electronic shift control with automatic clutch modulation in all gear 
Maximum travel speed  40.4 mph  65 km/h 
Axles   
Rear axles    Full-floating 
Final drive type    Planetary gear 
Ratios:     
Differential    3.357 
Planetary    6.333 
Suspension System   
Independent, hydropneumatic suspension cylinder with fixed throttle to dampen vibration. 
Effective cylinder stroke:     
Front suspension  12.6"  320 mm 
Rear suspension  5.0"  127 mm 
Rear axle oscillation    6.5 
Steering System   
Type    Fully hydraulic power steering with two double-acting cylinders 
Supplementary steering    Electro-hydraulic motor 
Minimum turning radius  33'2"  10.1 m 
Maximum steering angle    41 
Cab   
Integral four-post ROPS/FOPS Level 2 cab structure 
Main Frame   
Type    Box-sectioned structure Integral front bumper 
Brakes   
Brakes meet ISO 3450 standard. 
Service brakes:     
Front    Fully hydraulic control, oil-cooled multiple-disc type 
Rear    Fully hydraulic control, oil-cooled multiple-disc type 
Parking brake    Spring applied, multiple-disc type(actuates on all wheels) 
Retarder    Oil-cooled, multiple-disc front and 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  5,807 in  37467 cm 
Rear  11,224 in  72414 cm 
Body   
Capacity     
Struck  52.3 yd  40 m 
Heaped (2:1, SAE)  78.5 yd  60 m 
Payload  100.3 U.S. tons  91.0 metric tons 
Material    400 Brinell hardness high tensile strength steel 
Structure    V-shape body with V-bottom 
Material thickness:     
Bottom  0.75"  19 mm 
Front  0.47"  12 mm 
Sides  0.35"  9 mm 
Target area (inside length x width)  23'2"x 17'1"  7065 mm x 5200 mm 
Dumping angle    48 
Height at full dump  33'1"  10080 mm 
Heating    Exhaust heating 
Hydraulic System   
Hoist cylinder    Twin, 2-stage telescopic type 
Relief pressure  2,990 psi  20.6 MPa / 210 kg/cm 
Hoist time     
Raise    13 sec 
Lower    14 sec 
Weight (approximate)   
Empty weight  158,800 lb  72000 kg 
Max. gross vehicle weight  366,000 lb  166000 kg 
Not to exceed max. gross vehicle weight, including options, fuel and payload.     
Weight distribution (Empty):     
Front axle    47% 
Rear axle    53% 
Weight distribution (Loaded):     
Front axle    31.5% 
Rear axle    68.5% 
Tires   
Standard tire    27.00 R49 
Service Refill Capacities   
Fuel tank  345.6 U.S. Gal  1308 ltr. 
Engine oil  34.1 U.S. Gal  129 ltr. 
Torque converter, transmission and retarder cooling  54.2 U.S. Gal  205 ltr. 
Differentials  36.2 U.S. Gal  137 ltr. 
Final drives (total)  33.8 U.S. Gal  128 ltr. 
Hydraulic system  46.2 U.S. Gal  175 ltr. 
Brake control  9.5 U.S. Gal  36 ltr. 
Suspension (total)  24.6 U.S. Gal  93 ltr. 
Engine coolant  74.8 U.S. Gal  283 ltr 

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