Komatsu PC118MR-8 Operation And Maintenance Manual page 244

FUNCTIONING
USE OF THE MACHINE AND RELATED CONTROLS
Avoid bumping the blade
Be careful not to hit the blade against rocks or boulders, since
this may damage the blade or the cylinders.
Blade position during digging operations
When carrying out deep digging operations with the blade at
the front, be careful to prevent the boom cylinder from hitting
the blade. If possible, always position the blade at the rear of
the machine.
Maximum water depth
CAUTION
When the machine is taken out of the water, if the machine
inclination is higher than 15°, the rear part of the turret will
be submerged and this can cause the cooling fan break.
For this reason, pay special attention when the machine is
coming out the water.
Do not work with the machine immersed in water if the depth
exceeds the allowed limits (under the centre of the carrier roller
(1)).
Moreover, grease the components that have been submerged
into water for long periods with the grease gun until the old
grease flows out of the bearings (around the bucket bolts).
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