Palm command electronic controlled blade/ripper
control joystick
Electronically-
controlled palm
command joystick is
equipped for blade/
ripper control.
Combined with the
highly reliable
Komatsu hydraulic
system, superb control
is the result.
7
6
E
COLOGY
F
EATURES
D155AX
-6
CRAWLER DOZER
D155AX
-6
C
R A W L E R
D
O Z E R
Komatsu’s ergonomically designed control system “PCCS” creates an operating environment with “complete operator control”
.
ECMV
ECMV
HSS
HSS
Valve
HSS MOTOR
M
EPC
EPC
ECMV
ECMV
ECMV
ECMV
EPC
EPC
[Komnet]
Electronic
controlled
travel control
lever
Electronic
controlled
blade control
lever
Electronic
controlled
ripper control
lever
Fuel
control
dial
Brake pedal
Monitor panel
KOMTRAX
terminal
Deceleration
pedal
Transmission
control valve
Engine
controller
Steering and transmission
controller
Air conditioner
controller
Blade controller
Electronic controlled
transmission
Main valve Quick drop
valve
Engine
Torque converter
EPC
EPC
EPC
EPC
Outline of electronic control system
Blade control
joystick
Ripper control
joystick
Main valve
Quick drop valve
Multi-monitor
Controller
Human-Machine Interface PCCS (Palm Command Control System)
Gearshift pattern preset function
When the gearshift pattern is set to either <F1-R2>, <F2-
R2> or <F2-R3L> in automatic gearshift mode, the gear is
automatically shifted, reducing round trip repetition work
time and operator's efforts.
F1-R1 MODE
Automatic
gearshift mode
F1-R2 MODE
F2-R2 MODE
Press
DOWN
switch
Press
DOWN
switch
Press
UP
switch
Press
UP
switch
F2-R3L MODE
Press
DOWN
switch
Press
UP
switch
F1-R1 MODE
Manual
gearshift mode
F1-R2 MODE
F2-R2 MODE
Press
DOWN
switch
Press
DOWN
switch
Press
UP
switch
Press
UP
switch
UP
DOWN
ECMV (Electronic Controlled Modulation Valve)
controlled transmission and brakes
Controller automatically adjusts each clutch engagement
depending on travel conditions, providing smooth shockless
clutch engagement, improved component life and operator
ride comfort.
Hydrostatic Steering System—smooth, powerful
turning
The engine power is transmitted to both tracks without
power interruption on the inside track for smooth, powerful
turns. Counter-rotation is available for minimum turning
radius providing excellent maneuverability.
Fuel efficient electronic controlled engine
The Komatsu SAA6D140E-5 engine delivers
264 kW
354
HP at 1900 rpm. The fuel-efficient, powerful Komatsu engine
makes the D155AX superior in both ripping and dozing
operations. The engine is EPA Tier 3 and EU stage 3A
emission regulation certified. The engine is turbocharged
and features direct fuel injection and air-to-air aftercooling to
maximize power, fuel efficiency and emission compliance.
To minimize noise and vibration, the engine is mounted to
the main frame with rubber cushions.
Hydraulic drive radiator cooling fan
The engine cooling fan rotation speed is electronically
controlled. The fan rotation speed depends on engine
coolant and hydraulic oil temperatures, the higher the
temperature the higher the fan speed. This system increases
fuel efficiency, reduces the operating noise levels and
requires less horsepower than belt driven fan.
Engine
C
ONTROL
F
EATURES
Palm command electronic controlled travel
control joystick
Palm command travel joystick
provides the operator with a relaxed
posture and superb fine control
without operator fatigue.
Transmission gear shifting is
simplified with thumb push buttons.
RH
DOWN SHIFT
UP SHIFT
F
LH
R
Komatsu develops and produces all major components,
such as engines, electronics and hydraulic components in
house.
With this "Komatsu Technology", and adding customer
feedback, Komatsu is achieving great advancements in
technology.
To achieve high levels of productivity and ecology, Komatsu
developed the main components with an advanced control
system.
The result is a new generation of high performance and
environment friendly machines.
