SANY SY75, Руководство по эксплуатации и обслуживанию, Страница: 75 / 224

SY75C Excavator OMM New Machine Run-In
SANY
Operation and Maintenance Manual — 0220
4-5
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NEW MACHINE RUN-IN
Your machine has been thoroughly adjusted and tested before shipment. However, initial operation of the machine
under severe conditions can adversely affect the performance of the machine or shorten the machine life.
Therefore, SANY recommends that you allow a run-in period of 100 operating hours for a new machine.
Properly running in a new machine is crucial for guaranteeing a long service life of the machine by allowing time
for new cylinder piston rings and other internal engine parts to wear in properly. Ensure that the machine is in a
normal working condition before proceeding with the running-in.
Refer to the applicable engine manual for details on running-in the engine.
The following points are not limitations but instead guidelines for the machine running-in period:
• Operate as much as possible in the half to three-quarters throttle or load range.
• Keep the engine speed at or near idle until the engine reaches its normal operating temperature.
• Avoid long periods of operation with the engine at idle or continuous maximum horsepower levels.
• Avoid sudden starts, movements or stops.
• Manage engine power to a point that allows acceleration to governed speed when conditions require more
power. Do not over rev the engine.
• Monitor the instruments frequently — especially the engine oil and coolant pressures. Shut down the
machine at the first indication of an abnormal reading.
• Shift down to a lower speed setting before climbing up a slope to keep the engine speed elevated.
• Check all components frequently for proper operation, unusual noises, and excessive heating.
• Frequently check all operating temperatures. Determine the cause if overheating occurs and perform
adjustments or repairs immediately.
• Always let the system cool down before turning off the engine at the end of the working day.
• Frequently check the bolts and screws for tightness.
• After running-in has been completed, check “Track Bolts - Check” on page 5-86, “Top Roller Bolts -
Check” on page 5-85, and “Track Tension - Check and Adjust” on page 5-86.