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Model    Komatsu SA6D170E-3 
Type    4-stroke, water-cooled, direct injection 
Aspiration    Turbocharged, air-to-air aftercooled, cooled EGR 
Number of cylinders   
Bore x stroke  6.69" x 6.69"  170 mm x 170 mm 
Piston displacement  1,413 in³  23.15 ltr 
Governor    All-speed, electronic 
SAE J1995  Gross 605 HP  Gross 451 kW 
ISO 9249 / SAE J1349*  Net 525 HP  Net 391 kW 
Rated rpm    1800 rpm 
Fan drive type    Hydraulic 
Lubrication system:     
Method    Gear pump, force lubrication 
Filter    Full-flow 
*Net horsepower at the maximum speed of radiator cooling fan  525 HP  391 kW 
*Net horsepower of this machine is controlled to be constant regardless of the fan speed.     
TORQFLOW Transmission   
Komatsu TORQFLOW transmission consists of a water-cooled, 3-element, 1-stage, 1-phase, torque converter with lockup clutch and a planetary gear, multiple-disc clutch transmission which is hydraulically actuated and force-lubricated for optimum heat dissipation. Gearshift lock lever and neutral safety switch prevent accidental starts. 
Gear  Forward  Reverse 
1st  2.2 mph
3.5 km/h 
2.9 mph
4.6 km/h 
2nd  4.2 mph
6.8 km/h 
5.7 mph
9.2 km/h 
3rd  7.3 mph
11.8 km/h 
9.8 mph
15.8 km/h 
Steering System   
PCCS lever, joystick controlled, wet multiple-disc steering clutches are spring-loaded and hydraulically released.Wet multiple-disc, pedal/lever controlled steering brakes are spring-actuated hydraulically released and require no adjustment. Steering clutches and brakes are interconnected for easy, responsive steering. 
Minimum turning radius  13'9"  4.2 m 
Suspension    Oscillating equalizer bar and pivot shaft 
Track roller frame    Cylindrical, high-tensile-strength steel construction 
Rollers and idlers    Lubricated track rollers 
K-Bogie Undercarriage    Lubricated track rollers are resiliently mounted to the track frame with a bogie suspension system whose oscillating motion is cushioned by rubber pads. 
Extreme Service Track Shoes    Lubricated tracks. Unique seals prevent entry of foreign abrasives into pin to bushing clearances to provide extended service life. Track tension is easily adjusted with grease gun. 
Number of shoes (each side)    41 
Grouser height:     
Single grouser  3.7"  93 mm 
Shoe width (standard)  24"  610 mm 
Ground contact area  7,527 in²  48560 cm² 
Ground pressure  20.3 psi  140 kPa / 1.43 kg/cm² 
Number of track rollers   
Number of carrier rollers   
Extreme service shoes:  Ground contact area:  Ground pressure: 
28'' / 710 mm
Additional weight - 1,500 lb / 680 kg 
8,760 in²
56520 cm² 
17.6 psi
1.24 kgf/cm² / 122 kPa 
32'' / 810 mm
Additional weight - 3,000 lb / 1360 kg 
9,990 in²
64480 cm² 
15.6 psi
1.10 kgf/cm² / 108 kPa 
Coolant and Lubricant Capacity (refill)   
Fuel tank  277 U.S. gal  1050 ltr 
Coolant  31.7 U.S. gal  120 ltr 
Engine  22.7 U.S. gal  86 ltr 
Torque converter, transmission,bevel gear, and steering system  39.6 U.S. gal  150 ltr 
Final drive (each side)  17.1 U.S. gal  65 ltr 
Final Drives   
Double-reduction final drive of spur and planetary gear sets to increase tractive effort and reduce gear tooth stresses for long final drive life. Segmented sprocket rims are bolt-on for easy replacement. 
Operating Weight   
Tractor weight
Including rated capacity of lubricant, coolant, full fuel tank, operator, and standard equipment. 
114,440 lb  51910 kg 
Operating weight
Including dual tilt Semi-U dozer, giant ripper, cab, ROPS, operator, standard equipment, rated capacity of lubricant, coolant, and full fuel tank. 
153,350 lb  69560 kg 
Ground pressure  20.3 psi  1.43 kg/cm² / 140 kPa 
Hydraulic System   
Hydraulic control unit:     
Maximum flow  107 U.S. gal/min  405 ltr/min 
Relief valve setting
• All-spool control valves are externally mounted on the hydraulic tank.
• Hydraulic gear pump. 
2,990 psi  210 kg/cm²
20.6 MPa 
Control valves:     
Two control valves for semi-U tilt dozer and U dozer:     
• Blade lift    Raise, hold, lower, and float 
• Blade tilt    Right, hold, and left 
Additional control valve required for ripper:     
• Ripper lift    Raise, hold, and lower 
• Ripper tilt (digging angle)    Increase, hold, and decrease 
Hydraulic cylinders:
Double-acting, piston 
Number of cylinders:  Bore: 
• Blade lift  5.9" / 150 mm 
• Blade tilt  8.9" / 225 mm 
• Ripper lift  8.9" / 225 mm 
• Ripper tilt  7.9" / 200 mm 
Hydraulic oil capacity (refill):     
Semi-U dozer or U dozer  36.5 U.S. gal  138 ltr 
Ripper equipment (additional volume):     
Giant ripper  18.5 U.S. gal  70 ltr 
Multi-shank ripper (variable)  18.5 U.S. gal  70 ltr 
Multi-shank ripper (fixed)  11.6 U.S. gal  44 ltr 

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