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SPECIFICATIONS
D63E
D63E-12 CRAWLER DOZER CRAWLER DOZER
ENGINE
Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Komatsu SA6D114E-2
Type . . . . . . . . . . . . . . . 4-stroke cycle, water-cooled, direct injection
Aspiration . . . . . . . . . . . . . . . . . . . . . . . . . Turbocharged, aftercooled
Number of cylinders . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Bore x stroke. . . . . . . . . . . . . . . . . 114 mm x 135 mm 4.49" x 5.31"
Piston displacement . . . . . . . . . . . . . . . . . . . . . . . . . 8.27 ltr 5.05 in3
Governor . . . . . . . . . . . . . . . . . . . . . . . . . . . . All-speed, Mechanical
Horsepower
SAE J1995 . . . . . . . . . . . . . . . . . . . . . . . . . Gross 127kW 170HP
ISO 9249 / SAE J1349 . . . . . . . . . . . . . . . . . . Net 116kW 155HP
Rated rpm. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1800rpm
Fan drive type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Mechanical
Lubrication system
Method . . . . . . . . . . . . . . . . . . . . . . Gear pump, forced lubrication
Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Full-flow
Net maximum torque. . . . . . 824 N•m 84 kg•m 608 lb ft @ 1300 rpm
TORQFLOW TRANSMISSION
Komatsu’s TORQFLOW transmission consists of a water-cooled,
3-element, 1-stage, 1-phase torque converter and a planetary gear,
multiple-disc clutch transmission which is hydraulically actuated and
force-lubricated for optimum heat dissipation. Joystick control of
gears (3 forward and 3 reverse) and directional steering changes.
Gearshift lock lever and neutral safety switch prevent machine
from accidental starts.
Travel speed Forward Reverse
1st 0–3.4 km/h 0–2.1 mph 0–4.4 km/h 0–2.7 mph
2nd 0–5.8 km/h 0–3.6 mph 0–7.5 km/h 0–4.7 mph
3rd 0–9.0 km/h 0–5.6 mph 0–11.0 km/h 0–6.8 mph
D63E-12
Power Shift
DRAWBAR PULL VS. SPEED.
MAXIMUM USABLE PULL
DEPENDS ON TRACTION AND
WEIGHT OF TRACTOR
INCLUDING MOUNTED
EQUIPMENT.
FINAL DRIVES
Spur gear double-reduction, final drives increase tractive effort.
Segmented sprocket are bolt-on for easy in-the-field replacement.
COOLANT AND LUBRICANT
CAPACITY (REFILL)
Fuel tank . . . . . . . . . . . . . . . . . . . . . . . . . . . . 315 ltr 83.3 U.S. gal
Coolant. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44 ltr 11.6 U.S. gal
Engine oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 ltr 5.0 U.S. gal
Damper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.3 ltr 0.3 U.S. gal
Transmission, bevel gear,
and steering system . . . . . . . . . . . . . . . . . . . 69 ltr 18.2 U.S. gal
Final drive (each side) . . . . . . . . . . . . . . . . . . 28.5 ltr 7.5 U.S. gal
STEERING SYSTEM
Joystick controls for all directional movements. Pushing the joystick
forward results in forward machine travel, while pulling it rearward
reverses the machine. Simply tilt the joystick to the left to make a
left turn. Tilt it to the right for a right turn.
Wet, multiple-disc steering clutches are hydraulically loaded and
hydraulically released. Wet, multiple-disc pedal-controlled steering
brakes are spring-actuated and hydraulically released.
Steering brakes also function as service and parking brakes.
Minimum turning radius*:. . . . . . . . . . . . . . . . . . . . . . . . 3.3 m 10'10"
*As measured by track marks on ground.
UNDERCARRIAGE
Suspension . . . . . . . . . . . . . . . . . . . . . Oscillation with equalizer bar
and forward mounted pivot shafts
Track roller frame . . . . . . . . . . . . . . . . . . . Monocoque, large section,
durable construction
Track shoes. . . . . . . . . . . . . . . . Lubricated tracks. Unique dust seals
for preventing entry of foreign abrasives into
pin-to-bushing clearances for extended service.
Track tension is easily adjusted with a grease gun.
Number of carrier rollers (each side) . . . . . . . . . . . . . . . . . . . . . . . . 2
Number of track rollers (each side) . . . . . . . . . . . . . . . . . . . . . . . . . 6
Number of shoes (each side) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Grouser height . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65 mm 2.6"
Shoe width . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 560 mm 22"
Track gauge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1925 mm 6'4"
Length of track on ground. . . . . . . . . . . . . . . . . . . . . . . 2725 m 8'11"
Ground contact area . . . . . . . . . . . . . . . . . . . . . 30520 cm24,730 in2
Ground pressure . . . . . . . . . . . . . . . . 59.8 kPa 0. 61 kg/cm28.67 psi
OPERATING WEIGHT (APPROXIMATE)
Tractor weight:
Including rated capacity of lubricant, coolant, full fuel tank, operator
and standard equipment. . . . . . . . . . . . . . . . . . . 14645 kg 32,290 lb
Operating weight:
Including Semi-U dozer, steel cab, ROPS canopy, single shank
ripper, rated capacity of lubricant, coolant, full fuel tank, operator and
standard equipment. . . . . . . . . . . . . . . . . . . . . . . 18500 kg 40,790 lb
HYDRAULIC SYSTEM
Closed-center load sensing system (CLSS) designed for precise
and responsive control, and for efficient simultaneous operation.
Hydraulic control units:
All spool control valves externally mounted beside the hydraulic tank.
Type of pump:
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Gear pump
Capacity (discharge flow at rated engine rpm):
. . . . . . . . . . . . . . . . . . . . . . . . . . . . 134 ltr/min 35.4 U.S. gal/min
Relief valve setting . . . . . . . . . . . . . . 20.6 MPa 210 kg/cm22,990 psi
Hydraulic cylinders . . . . . . . . . . . . . . . . . . . . . . Double-acting, piston
Control valves:
Spool control valve for mechanical angle power tilt dozer.
Positions: Blade lift . . . . . . . . . . . . . . . Raise, hold, lower, and float
Blade tilt . . . . . . . . . . . . . . . . . . . . . Right, hold, and left
Additional control valve for multi-shank ripper
Positions:Ripper lift. . . . . . . . . . . . . . . . . . . Raise, hold, and lower
Hydraulic oil capacity (refilling):
Straight tilt dozer. . . . . . . . . . . . . . . . . . . . . . 48.0 ltr 12.7 U.S. gal
Number of cylinders Bore
Blade lift 2 110 mm 4.33"
Blade tilt 1 140 mm 5.51"
Remarks: * Blade capacities are based on the SAE recommendation practice J1265.
DOZER EQUIPMENT
Use of high tensile strength steel in moldboard for strengthened blade construction.
Overall length Blade Blade Maximum lift Maximum drop Maximum tilt Angling Additional
with dozer capacity* length x height above ground below ground adjustment angle weight
Semi-U Dozer 6510 mm 4.4 m33200 mm x 1300 mm 1005 mm 460 mm 600 mm 2060 kg
21'4" 5.8 yd310'6" x 4'3" 3'4" 1'6" 2' –4,540 lb
Straight Tilt Dozer 6315 mm 3.0 m33200 mm x 1100 mm 1005 mm 460 mm 600 mm 1770 kg
20'9" 3.9 yd310'6" x 3'7" 3'4" 1'6" 2' –3,900 lb
Mechanical Angle 5415 mm 2.6 m33970 mm x 950 mm 1130 mm 540 mm 200 mm 2540 kg
Dozer 17'9" 3.4 yd313'0" x 3'1" 3'8" 1'9" 8" 25 degree 5,600 lb
DIMENSIONS
Ground clearance . . . . . . . . . . .390 mm 1'3"
A1925 mm 6'4" H 2725 mm 8'11"
B3200 mm 10'6" I 6510 mm 21'4"
C290 mm 11" J 65 mm 2.6"
D600 mm 2'0" K 505 mm 1'8"
E2700 mm 8'10" L 3025 mm 9'11"
F1005 mm 3'4" M 3140 mm 10'4"
G460 mm 1'6"
Dimension with Semi-U dozer.