Komatsu ecot3 Operation And Maintenance Manual page 218

OPERATION
MACHINE OPERATIONS AND CONTROLS
PROHIBITION OF LONG TIME CONTINUOUS TRAVEL
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.
If the machine travels continuously for a long time with the track loosened, undercarriage parts may be damaged
on an early stage.
When traveling continuously for a long time, check the track tension every 1.5 hours, and adjust it if it is loosened.
See "CHECK AND ADJUST TRACK TENSION (PAGE 4-32)" for adjustment.
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