Komatsu D61EXi-24 Operation & Maintenance Manual page 43

OPERATION
1)
Move the blade control lever to LOWER direction (C)
once and return it to NEUTRAL position (B).
The blade automatically lowers to the design surface
or height of the ground where the track contacts.
REMARK
• Operator does not need to keep the lever at
LOWER position until the blade reaches to the
design surface.
• While the machine is traveling or stopped, the
blade automatically lowers with LOWER trigger
operation.
Move the blade control lever to RAISE direction
(A) to cancel the blade automatic control.
• If LOWER trigger operation is performed quickly,
the blade control lever may vibrate and may be
set in RAISE direction (A) and LOWER direction
(C) repetitively, and the work equipment may
hunt.
If the blade control lever vibrates, hold it with your
hand to prevent vibration.
4.
Drive the machine.
The blade automatic control starts.
ACTIONS WHEN AUTOMATIC BLADE CONTROL IS ACTIVATED
While the blade automatic control is in operation, the blade au-
tomatically moves to lifting direction (A) and (C) and to tilting di-
rection (E) and (F) even if the blade control lever is kept in
NEUTRAL position.
Blade moves as such that the blade edge moves along the pre-
set design surface.
REMARK
When the design surface is located lower than the current
ground level, the blade will cut the soil.
When the design surface is located higher than the current
ground level, the blade will dump the soil holding in it to the
ground.
With these 2 operations, you can easily build a ground surface
as designed.
When the load to blade increases, the blade is automatically raised to keep the constant targeted load by ad-
justing lifting amount, before the machine becomes impossible to travel forward.
REMARK
If some places higher than the design surface are left, drive the machine in reverse, and drive it on that place
several times so that such places can be built as designed.
While the blade automatic control is in operation, if the operator operates blade control lever, the blade moves
as operated by the operator.
MACHINE OPERATIONS AND CONTROLS
3-29