Detailed instructions for use are in the User's Guide.
[. . . ] See page 8.
Genuine Answers for Land and Environment Optimization
SAA6D107E-1 turbocharged after-cooled diesel engine provides an output of 125 kW 168 HP
with excellent productivity, and is EPA Tier 3 and EU Stage 3A emission certified. High capacity Power angle tilt dozer, Semi-U Tilt dozer (for D61EX), combines the highest power in its class with outstanding productivity.
Wet, multiple-disc brakes
eliminate brake-disc adjustments for maintenance-free operation. See page 8.
Hydrostatic Steering System (HSS)
provides smooth, quick, and powerful control in various ground conditions. See page 5.
Blade tilt lines
completely protected.
Bolt-on segmented sprocket teeth Komatsu torqflow transmission
offers single lever control of speed (3 forward and 3 reverse) and directional changes. [. . . ] The joystick provides the same steering response on downhill slopes as on flat ground.
Steering planetary gear units Hydraulic motor
Full-adjustable suspension seat and travel control console
The travel control console has adjustment fore and aft, and height. For improved rear visibility during reverse operations, the operator can adjust seat 15° to the right. (optional)
Fuel control dial
Engine revolution is controlled by electric signal, providing ease of operation, eliminating maintenance of linkage and joints.
Brakes
Height adjustable armrest
Armrest height is adjustable without any tools, providing the operator with firm arm support in an ideal armrest.
Grading-- can be done efficiently without damaging the ground, because the inside track is not locked during turning.
Preset travel speed function Outline of electronic control system
Fuel control dial Travel control lever
Auto shift down switch
Pre-set mode switch
Preset travel speed selection function is provided as standard equipment. The preset switch enables the operator to select a combination of forward/reverse gear shifts, from 5 patterns; F1-R1, F1-R2, F2-R1, F2-R2 and F2-R3, by using UP/DOWN shift switch, and once the shift pattern is selected, only forward / reverse direction control selection is required. Once F2-R2 pattern is selected, for example, 2nd gear is automatically selected when travel control joystick is moved into forward/reverse. This function reduces gear shifting frequency during machine operation, and is especially helpful, when used in combination with auto-downshift function.
F1-R1 MODE
Press DOWN switch Press DOWN switch
DOWN
Monitor panel
Heavy load
Light load
UP
MONITOR SYSTEM
Press UP switch
EPC Control valve EPC Slope sensor
F1-R2 MODE
Press UP switch Press UP switch
Deceleration pedal
F2-R1 MODE
Press DOWN switch
F2-R2 MODE
Press DOWN switch Press UP switch
Engine controller
Steering & Transmission controller Transmission control valve Engine speed ECMV ECMV ECMV ECMV ECMV
Brake pedal potentiometer
F2-R3 MODE
Auto-downshift function
Controller monitors engine speed, travel gear and travel speed. When load is applied and machine travel speed is reduced, the
Transmission output speed sensor HSS
Actuated on heavy load or steep slope
Intake manifold Water Engine temp temp oil pressure Fuel control valve unit
controller automatically downshifts to optimize gear speed to provide high fuel efficiency. This function provides comfortable operation and high productivity without manual downshifting. (This function can be deactivated with cancel switch. )
Engine
Electronically controlled transmission
4
5
D61EX/PX-15E0
C R AW L E R D O Z E R
CRAWLER DOZER
PRODUCTIVITY FEATURES
Work equipment
Large blade
Capacities of 3. 4 m3 4. 4 yd3 (PAT dozer for D61EX), 3. 8 m3 5. 0 yd3 (PAT dozer for D61PX), 4. 3 m3 5. 6 yd3 (Semi-U dozer for D61EX) yield outstanding production. High-tensile-strength steel has been incorporated into the front and sides of the blade for increased durability.
D61-15E0 WA380-6
WORKING ENVIRONMENT
Operator comfort
Operator comfort is essential for productive work. The D61EX/PX provides a quiet, comfortable environment where the operator can concentrate on the work at hand.
Comfortable ride with new cab damper mounting
D61EX/PX's cab mount uses a new cab damper which provides excellent shock and vibration absorbtion capacity with its long stroke. Cab damper mounts soften shocks and vibration while traveling over adverse conditions, which conventional mounting system are unable to absorb. The cab damper spring isolates the cab from machine chassis, suppressing vibration and providing a quiet, comfortable operating environment.
Undercarriage Engine
The Komatsu SAA6D107E-1 engine delivers 125 kW 168 HP at 1850 rpm. The fuel-efficient Komatsu engine, together with the heavy machine weight, make the D61EX/PX superior crawler dozers in both ripping and dozing operations. The engine is EPA Tier 3 and EU Stage 3A emission regulations certified, and features direct fuel injection, turbocharger, air-to-air and aftercooler to maximize fuel efficiency. If the monitor detects abnormalities, corresponding warning lamp blinks and warning buzzer sounds. The monitor displays engine rpm and forward/reverse gear speed on the upper part of the monitor during operation. If abnormalities occur during operation, user code appears on display. When a critical user code is displayed, the caution lamp blinks and a warning buzzer sounds to prevent the development of serious problems.
Reliable simple structure
Simple hull structure main frame design increases durability and reduces stress concentration at critical areas. The track frame has a large cross section and utilizes pivot shaft mounting for greater reliability.
Maintenance-free disc brakes
Wet disc brakes require less maintenance.
Gull-wing engine side covers
The opening area is further enlarged when gull-wing engine side covers are opened, facilitating engine maintenance and filter replacement.
Easy/cleaning with hydraulic driven radiator cooling fan
The radiator core and the core on the front side of the oil cooler can be easily cleaned by running the hydraulic engine fan in reverse. [. . . ] Plunger-type hydraulic pump with capacity (discharge flow) of 195 ltr/min 51. 5 U. S. Double-acting, piston Number of cylinders 2 1 2 Bore 110 mm 4. 33" 130 mm 5. 12" 110 mm 4. 33" Hydraulic oil capacity (refilling): Power angle tilt dozer . Right, hold, and left Spool control valve for semi-U and straight tilt dozer. Right, hold, and left
Travel speed 1st 2nd 3rd
Forward 03. 2 km/h 02. 0 mph 05. 6 km/h 03. 5 mph 08. 7 km/h 05. 4 mph
Reverse 04. 3 km/h 02. 7 mph 07. 2 km/h 04. 5 mph 011. 0 km/h 06. 8 mph
US ton kN ton 40 36
Number of track rollers (each side) Type of shoes (standard) Number of shoes (each side) Grouser height Shoe width (standard) Ground contact area Ground pressure (with dozer, ROPS canopy) Track gauge Length of track on ground
D61EX/PX-15E0 Power Shift
DRAWBAR PULL VS. [. . . ]