Operation
Safety, Operation and Maintenance Manual - Sep 2012
4-36
SY115C9/135C/155H Crawler Hydraulic Excavator
●
Bucket control
Move the right joystick left or right to control
bucket operation.
CZ335-1103178
●
Boom control
Push or pull the right joystick to control boom
operation.
CZ335-1103177
Fig. 4-62
Fig. 4-63
When joystick control is in the neutral position,
the auto deceleration system will be activated
to lower engine speed to a moderate level if
no operation is performed within 5 seconds.
This will happen even if you turn the fuel con-
trol dial to the MAX position.
Remark:
This machine includes an energy accumulator
installed in oil control lines. Turning the start
switch key to ON position and placing the hy-
draulic lockout control to the FREE position,
within 15 minutes after shutting off the engine,
allows you to maneuver the control levers to
lower the work equipment to ground.
This method can also be used to release the
remaining pressure of hydraulic system, or to
lower the boom after the machine has been
loaded onto a trailer.