Komatsu PC2000-8 BACKHOE, Operation & Maintenance Manual, Page: 289 / 504

OPERATION
MACHINE OPERATIONS AND CONTROLS
3-223
Swinging or Traveling When Rock Is on Top of Track Assembly
Do not swing the upper structure or travel if there is in the rock
on top of the track assembly. It will contact the undercover or
frame and cause damage. In the worst case, it may cause
damage to the hydraulic equipment and result in a serious
breakdown.
During operations, always check that there is no rock, pieces of
rock, or mud on top of the track assembly.
High-Speed Travel Operations on Rough Ground
Do not travel at high speed on rough ground or rocks. Each
time the machine travels over rough parts of the ground sur-
face, the thrusting load on the machine will increase and
reduce the service life of the machine.
To protect the machine when traveling on rough ground or on
rocks, there is a cushion structure in the idler (1), so set the
idler facing in the direction of travel and travel at low speed.
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.