Komatsu PC138US-11 Operation & Maintenance Manual page 117

OPERATION
AUTO-DECELERATION SWITCH
Auto-deceleration switch automatically lowers the engine
speed and turns on the function to reduce fuel consumption
when the control levers are at NEUTRAL position.
Auto-deceleration pilot lamp lights up: Auto-deceleration ON
Auto-deceleration pilot lamp goes out: Auto-deceleration OFF
Each time the switch is pressed, the auto-deceleration is
switched between ON and OFF.
Function of auto-deceleration
When the auto-deceleration function is ON, if the work equipment lever and travel lever are returned to NEU-
TRAL position, the engine speed will drop approximately after 4 seconds from the operating speed to idle
speed.
As a result, fuel consumption can be reduced.
If any lever is operated in this condition, engine speed will return to the previous operating speed, and you can
perform the operation.
1.
When the auto-deceleration switch is pressed and the au-
to-deceleration function is turned ON, the mode is dis-
played in the center of the monitor display, and after 2 sec-
onds, the screen returns to the standard screen.
2.
On the standard screen, auto-deceleration pilot lamp lights
up.
(When the auto-deceleration is OFF, the pilot lamp goes
out.)
WENAM00111
EXPLANATION OF COMPONENTS
3-47