System Functions
Safety, Operation and Maintenance Manual - Aug 2012 3-43
SY115C9/135C/155H Crawler Hydraulic Excavator
Remark:
When travel control levers and joystick con-
trols are in neutral position, engine speed will
drop to medium level even if fuel control dial
is set above medium speed. If you maneuver
any control, engine speed will rise to the level
set by fuel dial control.
If travel control levers and joystick controls are
in neutral position, engine speed will decrease
by 100 rpm. About four seconds later engine
will drop to the level (about 1,400 rpm) set for
automatic deceleration.
Releasing control lever or joystick, it goes
back to neutral position automatically and ma-
chine function stops.
Right joystick operation
⑤ Forward Boom DOWN
⑥ Backward Boom UP
⑦ Left Bucket DIG
⑧ Right Bucket DUMP
Right joystick control
⑤
⑦
⑥
⑧
CZ335S-1103042
Fig. 3-54
Fig. 3-55
Table 3-4
CZ335-1103058
6
5
7
8
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