Komatsu Galeo PC138US-8 Shop Manual page 271

10 Structure, function and maintenance standard
Function
When all the control levers are set to NEU-
q
TRAL for waiting for a dump track or work, the
engine speed is automatically reduced to a
control speed, and fuel consumption and noise
are lowered.
When any control lever is operated, the engine
q
speed returns immediately to the speed that is
set with the fuel control dial.
Operation
When control levers are set in neutral
If all the control levers are set to NEUTRAL for
q
4 seconds or more with the engine speed
exceeding approx. 1,400 rpm, the engine
speed lowers down to the control speed
(approx. 1,400 rpm) and is held until the con-
trol lever is operated again.
When any control lever is operated
With the engine speed at the control speed
q
(approx. 1,400 rpm), when any control lever is
operated, the engine speed increases immedi-
ately to the speed that is set with the fuel con-
trol dial.
A : All work equipment control levers in "NATU-
RAL"
B : All work equipment control levers "OPER-
ATED"
C: Fuel control dial set speed
D: Engine control speed (approx. 1,400 rpm)
E : 4 sec.
F : Max. 2 sec.
G: Max. 0.2 sec.
PC138US, USLC-8
SEN02553-01
13