Komatsu D375A-8, Operation & Maintenance Manual

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WORKS OF CUTTING INTO HARD OR FROZEN GROUND OR DITCH
For digging and ditch excavation of hard or frozen ground, tilt
the blade. Even hard ground can be dug effectively by a tilted
or angled blade.
If the ground is harder, use a ripper attachment for better effi-
ciency.
WORKS OF FELLING TREES AND REMOVING STUMPS
NOTICE
Do not perform stump removal or other hard work by tilting the blade.
For trees with a diameter of 10 to 30 cm, raise the blade high
and push a few times to fell the tree.
Next, travel in reverse, and dig the corner of the blade into the
ground to cut and dig up the roots.
When doing this, never hit the tree at high speed or apply
shock to fell the tree.
PUSHING WORK
NOTICE
• When performing pushing operations, always install
the pusher plate.
• When approaching the objective machine, decrease
the travel speed with the decelerator pedal or fuel con-
trol dial and bring the plate in contact with the objec-
tive machine slowly.
After the plate comes in contact, increase the travel
speed gradually and push with full power.
LARGE BOULDER DIGGING UP OPERATION
When performing digging up the large boulders, put the blade
end bit on a boulder at the position lower than the idler. Next,
raise the engine speed gradually by decelerator pedal opera-
tion and apply force to the boulder to break it or dig it up.
NOTICE
Do not perform travel during the operation to dig up bould-
ers, otherwise, the machine may break. In addition, check
that both tracks are constantly in contact with the ground
when performing the operation to dig up boulders.
OPERATION MACHINE OPERATIONS AND CONTROLS
3-195