SANY SY500H, Operation And Maintenance Manual

Page: 75 / 196

MACHINE OPERATION
4-5 SY500H Excavator OMM
NOTE: Clean the grab handles and steps of any grease
or debris to allow a firm grip when entering or
exiting the machine.
Make sure the following items are clean before operating
the machine:
• Windows (1)
• Grab handles (4)
• Steps (3)
NOTE: Left steps are shown, right steps are similar.
• Mirrors (2)
Cleaning the Cab Interior
NOTE: Clean the grab handles and steps of any grease
or debris to allow a firm grip when entering or
exiting the cab area.
Remove all debris from inside the cab to prevent
interference with machine operation.
Check that the escape tool and fire extinguisher are
present. See “Check the Fire Extinguisher” on page 5-58
and “Check the Escape Tool” on page 5-58.
New Machine Break-in
This machine has been thoroughly tested and adjusted
before shipment. However, initial operation of the
machine under severe conditions can adversely affect its
performance or shorten its life. SANY recommends a
break-in period of 100 service hours for a new machine.
To properly break in a new machine is crucial for long
service life by allowing time for internal engine parts to
wear in properly. Make sure that the machine is in a
normal working condition before proceeding with the
break-in.
Contact a SANY dealer for details to properly break in the
engine.
The following points are not limitations but are instead
guidelines for the break-in period:
• Operate as much as possible in the 1/2 to 3/4 throttle
or load range.
• Keep the engine speed at or near low idle until the
engine reaches its normal operating temperature.
• Avoid long periods of operation with the engine at
idle or at continuous maximum horsepower levels.
• Avoid sudden starts, movements, or stops.
• Manage engine power to allow acceleration to the
governed speed when conditions require more
power. Do not over-rev the engine.
• Monitor the instruments frequently, especially the
engine oil and coolant temperatures. Shut down the
machine at the first indication of an abnormal
reading.
• Check all components frequently for proper
operation, unusual noises, and excessive heating.
• Always allow the engine to cool down before
shutting off the engine.
• Frequently check the fasteners for tightness.
When the engine break-in period has been completed,
check the following:
• “Clean and Check the Upper Structure and
Undercarriage” on page 5-60.
• “Check the Track Tension” on page 5-51.
Prestart Checks and
Adjustments
Complete the following checks and adjustments before
starting the engine each day.
• Check the Maintenance Log to verify that all
required maintenance checks have been performed
before operating the machine.
• Check the machine for loose fasteners, fluid leaks,
and any other signs of damage or wear. Make
repairs as necessary.
• Check that the machine fluids are at operational
levels.
• Inspect the engine compartment for combustible
debris that may come in contact with hot engine
components. Clear all debris from the engine and
engine compartment.
• Check the undercarriage (track, sprockets, tension
rollers, and guards) for damage, wear, loose
fasteners, and fluid leaks. Make repairs as
necessary.
• Check the bucket or optional equipment for damage.
Clean and check the mirrors for damage. Repair if
necessary.
• Check the gauges and the monitor in the cab.
Contact a SANY dealer to replace or repair any
malfunctioning parts or components.