Komatsu ecot3 PC300LC-8 Shop Manual page 280

SEN01998-05
4. Auto-deceleration function
Function
q The auto-deceleration function automatically
reduces the engine speed to its medium speed
range when the all control levers are set in
NEUTRAL while waiting for a dump truck or
work to reduce the fuel consumption and
noise.
q If any lever is operated, the engine speed
instantly returns to the speed set with the fuel
control dial.
Operation
When control levers are set in neutral
q If all the control levers are kept to NEUTRAL
for 4 sec. during operation at a engine speed
above a decelerator operation level (approxi-
mately 1,300 rpm), this function lowers the
engine speed to the deceleration operation
level (approximately 1,300 rpm) and keeps it
until you operate any lever.
When any control lever is operated
q If you operate any control lever while the
engine speed is kept at the deceleration opera-
tion level, the engine speed instantly rises to
the level set with the fuel control dial.
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10 Structure, function and maintenance standard
PC300, 350-8