HD325-7

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Engine   
Model    KOMATSU SAA6D140E-5 
Type    Water-cooled, 4-cycle 
Aspiration    Turbo-charged, air-to-air after-cooled, cooled EGR 
Number of cylinders   
Bore x stroke  5.5" x 6.5"  140 mm x 165 mm 
Piston displacement  930 in  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  1,600 lbft  221 kgm 
Fuel system    Direct injection 
Governor    Electronically controlled 
Lubrication system :     
Method    Gear pump, force-lubrication 
Filter    Full-flow type 
Air cleaner    Dry type with double elements and precleaner, plus dust indicator 
EPA Tier 3 and EU Stage 3A emission certified.     
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-disk 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  43.5 mph  70 km/h 
Axles   
Rear axle    Full-floating 
Final drive    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 cylinder 
Supplementary steering    Manual control (meets ISO 5010, SAE J1511 and SAE J53) 
Auxiliary steering    SAE automatic 
Minimum turning radius  23'7''  7.2 m 
Maximum steering angle    43 
Cab   
Dimensions comply with ISO 3471 and SAE J1040-1988c ROPS (Roll-Over Protective Structure) standards. 
Main Frame   
Type    Box-sectioned structure 
Brakes   
Brakes meet ISO 3450 and SAE 1473 standards. 
Service brakes:     
Front    Full-hydraulic control, caliper disc type 
Rear    full-hydraulic, 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 in 2  968 cm2 
Rear  7,881 in 2  50847 cm2 
Body   
Capacity:     
Struck  23.5 yd3  18 m3 
Heaped (2:1 ,SAE)  31.4 yd3  24 m3 
Payload, maximum  40 U.S. tons  36.5 metric tons 
rated  35 U.S. tons  32 metric tons 
Material : (high-tensile-strength steel)  184,860 psi  130 kg/mm2 
     
Structure    V-shape body 
Material thickness:     
Bottom  0.75"  19 mm 
Front  0.47"  12 mm 
Sides  0.35"  9 mm 
Target area (inside length x width)  18'1" x 11'1"  5500 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 
Hoist time    10 sec 
Weight (approximate)   
Empty weight  69,700 lb  31600 kg 
Gross vehicle weight with 32 metric ton (35 U.S.ton) payload  140,390 lb  63680 kg 
Max. gross vehicle weight:     
Standard tire  152,740 lb  69280 kg 
Not to exceed max. gross vehicle weight, including options, fuel     
Weight distribution:     
Empty: Front axle    51.7% 
Rear axle    48.3% 
Loaded: Front axle    33% 
Rear axle    67% 
Tires   
Standard Tires    18.00-33-32PR 
Service Refill Capacities   
Fuel tank  127.9 U.S. Gal  484 ltr. 
Engine oil  13.2 U.S. Gal  50ltr 
Torque converter, transmission and retarder cooling  23.8 U.S. Gal  90 ltr 
Differential  11.9 U.S. Gal  45 ltr 
Final drive (left and right)  7.9 U.S.  30 ltr 
Hydraulic system  34.1 U.S. gal  129 ltr 
Suspension (total)  11.7 U.S. gal  44.2 ltr 

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