Machine Operation
SY35U Excavator OMM
4-22
Operation and Maintenance Manual — 0120
SANY
New Machine Break-In
NOTE:
The machine has been thoroughly tested and adjusted before shipment. However, initial operation of
the machine under severe conditions can adversely affect the performance of the machine or shorten
the machine life. Sany recommends a break-in period of 100 service hours for a new machine.
Properly breaking in a new machine is crucial for long service life by allowing time for internal
engine parts to break in properly. Make sure the machine is in normal working condition before
proceeding with break-in.
1. Start the engine and run at low idle until it reaches proper operating temperatures. Do not move the controls or
the throttle.
2. Avoid operating the machine under heavy loads or at high speeds during the break-in period. Operate as much
as possible in the 1/2 to 3/4 throttle range. Do not operate this machine with a full load during the break-in
period.
3. Avoid sudden starts, movements, or stops.
4. Monitor the instruments frequently – especially the engine oil pressure and coolant temperature. Shut down the
machine at the first indication of an abnormal reading.
5. Avoid operating the engine at low idle for extended periods of time.
6. Manage engine power to allow acceleration to governed speed when conditions require more power. Do not
over-rev the engine.
7. Always allow the engine to cool before shutting it down.
8. After shutting down the engine, check the fluid levels.
