Komatsu PC220LC -8 Operation & Maintenance Manual page 215

OPERATION
MACHINE OPERATIONS AND CONTROLS
Long-Time Continuous Travel Operations
Do not travel continuously at high speed for 1.5 hours or more. The
lubricating oil inside the track rollers and final drive will rise to a high
temperature, and there is danger that this will cause damage to the
oil seal or leakage of oil.
When traveling continuously for a long time, stop the machine for
30 minutes every 1.5 hours to allow the lubricating oil inside the
track rollers and final drive to cool down.
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