D475A-5

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Engine   
Model    Komatsu SAA12V140E-3 
Type    4-cycle, water-cooled, direct injection 
Aspiration    Turbocharged, air-to-air aftercooled 
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 
Flywheel horsepower:     
SAE J1349  899 HP  671 kW 
DIN6270  890 HP  644 kW 
Hydraulic fan at maximum speed  860 HP  641 kW 
Rated rpm    1900 rpm 
Governor    All-speed, electronic 
Lubrication system:     
Method    Gear pump, force lubrication 
Filter    Full-flow and bypass combined 
 
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  2.1 mph
3.3 km/h 
2.6 mph
4.2 km/h 
2nd  3.9 mph
6.2 km/h 
5.0 mph
8.0 km/h 
3rd  7.0 mph
11.2 km/h 
8.7 mph
14.0 km/h 
 
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 teeth are bolt-on for easy replacement. 
 
Steering System   
PCCS lever, joystick-controlled, wet multiple-disc steering clutches are spring-loaded and hydraulically released. Wet multiple-disc steering brakes are spring-actuated, hydraulically released, and require no adjustment. Steering clutches and brakes are interconnected for easy, responsive steering. 
Minimum turning radius  15'1"  4.6 m 
 
Undercarriage   
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  4.1"  105 mm 
Shoe width (standard)  28"  710 mm 
Ground contact area  9,957 in  64240 cm 
Ground pressure (Tractor)  18.5 psi  128 kPa
1.30 kg/cm 
Number of track rollers   
Number of carrier rollers   
Extreme service shoes  32"  810 mm 
Additional weight  2,030 lb  920 kg 
Ground contact area  11,360 in  73290 cm 
Tractor ground pressure  16.4 psi  113 kPa
Extreme service shoes  36"  910 mm 
Additional weight  4,030 lb  1830 kg 
Ground contact area  12,762 in  82340 cm 
Tractor ground pressure  14.8 psi  102 kPa
1.04 kg/cm 
 
Service Refill Capacities   
Fuel tank  441 U.S. gal  1670 ltr 
Coolant  72.6 U.S. gal  275 ltr 
Engine  32.0 U.S. gal  121 ltr 
Torque converter, transmission, bevel gear, and steering system  55.5 U.S. gal  210 ltr 
Final drive (each side)  19.8 U.S. gal  75 ltr 
 
Operating Weight   
Tractor weight
Including rated capacity of lubricant, coolant, full fuel tank, operator, and standard equipment. 
184,290 lb  83590 kg 
Operating weight
Including strengthened Full-U tilt dozer, giant ripper, steel cab, ROPS, operator, standard equipment, rated capacity of lubricant, coolant, and full fuel tank. 
238,960 lb  108390 kg 
Ground pressure  24.0 psi  166 kPa
1.69 kg/cm 
 
Hydraulic System   
Closed-center load sensing system (CLSS) designed for precise and responsive control, and for efficient simultaneous operation. 
Relief valve setting  3,980 psi  27.5 MPa
280 kg/cm 
Control valves (Spool control valves for Semi-U tilt dozer and Full-U tilt dozer):     
Positions:     
Blade lift    Raise, hold, lower, and float 
Blade tilt    Right, hold, and left 
Control valves (Spool control valves for variable digging angle multi-shank ripper and giant ripper.     
Positions:     
Ripper lift    Raise, hold, and lower 
Ripper tilt    Increase, hold, and decrease 
Hydraulic cylinders    Double-acting, piston 
Hydraulic cylinders
Number of cylinders 
Bore  Bore 
Blade lift / 2  7.09"  180 mm 
Blade tilt / 1  9.84"  250 mm 
Ripper lift / 2  8.86"  225 mm 
Ripper tilt / 2  8.86"  225 mm 
Hydraulic oil capacity (refill):     
Semi-U tilt dozer  48 U.S. gal  180 ltr 
U tilt dozer  48 U.S. gal  180 ltr 
Ripper equipment (additional volume):     
Giant ripper  34 U.S. gal  130 ltr 
Multi-shank ripper  34 U.S. gal  130 ltr 

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