SANY SY155U, Operation And Maintenance Manual, Page: 96 / 192

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MACHINE OPERATION
SY155U Excavator OMM
Avoid Shifting Travel Directions
Suddenly
0002873
Figure 4-58
• Never push or pull the control levers suddenly to
prevent sudden movement.
• Avoid moving the control levers quickly from forward
travel to reverse travel.
• Never move the control levers quickly from high speed
to neutral.
General Travel Instructions
CAUTION
Appoint a signalman when driving or operating
the machine in confined areas. Use standard hand
signals before starting the machine. Failure to
follow this caution could result in injury.
• The machine’s travel direction is controlled by the
travel control levers/pedals and the location of the
travel motors relative to the cab.
• When the travel motors are positioned behind the cab,
press the top of the travel control pedals or push the
travel control levers to move the machine forward.
• Select a flat travel surface and travel in a straight line.
If possible, turn the machine slowly and gradually.
• Never let the machine make contact with power lines or
bridges.
Operating in Water
NOTICE!
• Operate the machine slowly when traveling
through water. Check the depth of the water with
the bucket.
• When driving the machine out of water on a
grade steeper than 15°, the rear of the upper
structure may be submerged in water. The
radiator fan may sustain water damage that can
result in damage to the machine or cause the
equipment to operate improperly.
• Do not drive the machine into water where the water
depth is above the carrier rollers.
• Grease the parts that have been submerged until the
old grease has been displaced from the bearings and
the bucket pins.
• Make sure that the job site surface is firm enough for
the machine.
• Continuously monitor the condition of the machine
when operating in water. Move the machine to a
different location if necessary.
• Make sure that the swing bearing, swing drive gear,
and swivel do not become submerged in water.
NOTE: If the swing bearing, swing drive gear, or swivel
area have been submerged in water, they must be
cleaned. Lubricate the swing drive gear and swing
bearing.
Precautions When Traveling on an
Incline
WARNING
• Operating the machine on an incline may cause
the machine to become unstable.
• Use caution when operating the machine on
inclines and use a lower engine speed.
• Operate the machine slowly and monitor
machine movement.
• Do not travel on an incline with the bucket loaded
or with a lifted load.
• Do not swing a loaded bucket toward the
downhill direction.
• Build a platform on an incline so the machine can
be operated on a level surface.
Failure to follow these warnings could result in
death or serious injury.
NOTICE!
The engine may be damaged if the machine is
operated on an incline more than 25°.
The machine could tip over as of a result of being on
uneven ground or a slope. To avoid such accidents,
follow these instructions when the machine is operated
on uneven ground or on a slope: