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MACHINE OPERATIONS AND CONTROLS
4)
Press switch F6 to accept the inputted adjustment value.
The accepted adjustment values are reflected to the blade automatic control.
5)
Perform the gain adjustment while operating the machine actually and checking whether the leveling
result has been improved.
NOTICE
If the adjustment value is largely changed, the blade may move unexpectedly. Change the ad-
justment value gradually while checking the actual movement of the blade.
•
The larger the adjustment value becomes, the faster the blade starts moving. The smaller the ad-
justment value becomes, the slower the blade starts moving.
If the leveling result becomes waved at short cycle, decrease the gain.
If the leveling result becomes waved at long cycle, increase the gain.
If there are noticeable piled soils on the leveled ground, decrease the RAISE gain and increase
the LOWER gain.
If there are noticeable thrust marks of the blade edge on the leveled ground, increase the RAISE
gain and decrease the LOWER gain.
•
When the adjustment value is 50, the response speed is the same as "Default".
•
The adjustment value can be changed within the following range.
Lift RAISE/LOWER: 15 to 100
Tilt RIGHT/LEFT: 0 to 100
REMARK
•
In "Default", each gain has already been adjusted according to each type of work.
Select it for the leveling work or dozing work on general soil.
•
In "Option A", the gain for lift RAISE/LOWER or tilt RIGHT/LEFT can be adjusted individually.
Select "Option A" if leveled ground becomes waved or undulate under the selection of "Default". The gain
can be adjusted by adapting the soil conditions and travel speed to the actual work contents.
•
Once the gain adjustment values of "Option A" have been set, they are saved even though the gain adjust-
ment is set to "Default" afterward. It will be effective when "Option A" is set again.
PRECAUTIONS WHEN USING BLADE AUTOMATIC CONTROL
There are works not recommended for blade automatic control and works that required cautions in Operation
and Maintenance Manual, "OPERATION", "RECOMMENDED APPLICATIONS". Pay attention to the following
operations and precautions.
Works not recommended for blade automatic control
The following works are not recommended for the blade automatic control. Turn off the blade automatic control,
and operate blade with blade control lever.
•
Dozing and ditching of hard or frozen ground
For the hard ground which requires you to tilt the blade and incline the blade edge in order to cut in, you
cannot use the blade automatic control.
Crumble the ground by operating the blade with the blade control lever and ripper control lever (if equip-
ped), and then use the blade automatic control.
•
Works of felling trees and removing stumps
For the operation such as felling trees or removing stumps or raising boulders which does not have design
surface, the blade automatic control cannot be used.
Remove the obstacles in advance, and then use the blade automatic control.
Precautions when leveling soft ground where track sinks in
After leveling with the blade, the track may roughen the leveled surface and make it lower than the design sur-
face.
Use the blade automatic control while paying attention to the following.
•
Tamp the soft places with a heavy machine, etc. in advance.
•
In rough dozing, leave the top portion of the design surface (approximately 50 mm).
3-52
OPERATION
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