SANY SY500H, Operation And Maintenance Manual

Page: 51 / 196

MACHINE CONTROLS
3-21 SY500H Excavator OMM
Travel Controls
WARNING
Take extra care when using the pedals to steer the
machine. Never rest feet on the pedals unless
driving or steering the machine. Failure to follow
this warning could cause unexpected movement
of the machine, which could result in death or
serious injury.
0004685
Figure 3-35
Always note the following before operating the travel
controls:
• The directional arrow (1) on each of the track frames
indicates the forward direction of the undercarriage.
Check these arrows before using the travel control
levers. When possible, face the cab in this direction.
• When the cab faces backward, the travel direction
will be reversed. (The machine moves forward when
the control levers are pulled, and backward when
pushed.)
0004686
Figure 3-36
The travel controls include:
• Travel control levers (2)
• Travel control pedals (3)
NOTES:
• The footrests (4) do not control any functions.
• When a travel control lever/pedal or a joystick is
released, it returns to the neutral position and
machine movement stops.
0000663
Figure 3-37
The travel control levers and pedals are used to change
the travel direction of the machine:
• Forward travel (1): Push the control lever forward
(pedal tilts forward).
• Backward travel (2): Pull the control lever (pedal tilts
backward).
• Neutral Position (N): The machine stops.
Auto-idle
The auto-idle automatically activates when the machine
engine is started, and acts to reduce fuel consumption
and noise levels.
With the engine running, the auto-idle works as
described below:
• If the joysticks and travel controls remain in their
neutral positions for 5 seconds or longer, the engine
reduces idle speed to the factory-set auto-idle speed
(approximately 1300–1400 rpm).
NOTE: When the idle speed is set below the factory-set
auto-idle speed, the auto-idle will not change the
engine speed.
• If either of the joysticks or travel controls are
operated, or if the throttle control dial is adjusted while
the engine is idling at the lower factory-set auto-idle
speed, the engine speed automatically returns to its
higher, previously set level or the newly set level.
1
4 4
3
2
N
a
b
N
b
1
2
2
1