Komatsu GD555-5 Operation & Maintenance Manual page 201

OPERATION
BANK CUTTING METHOD - RIGHT SIDE
Lower the blade to the ground before removing the bank control lock pin.
1. The roadbed where the foundation is to be dug must be uniform.
2. If the soil is hard, angle the roadbed slightly towards the bank
to prevent the machine from sliding to the side away from the
bank.
3. Set to the bank cut posture. For details, see "BANK CUTTING
POSTURE (RIGHT SIDE) (PAGE 3-158)".
4. Rotate the circle and extend or retract the left and right blade lift cylinders to set to the bank slope face posture.
5. From the high bank position, rotate the blade so that the top of
the blade is at the front. This sets it to the low bank posture,
which is suited for scraping operations.
REMARK
If the top of the blade is rotated to the rear, the blade can be set to
the reverse low bank posture, which makes it possible to cut the
slope face while scraping up the soil.
To scrape up the soil smoothly, a shallow angle slope is needed.
Rotate the blade until the bottom of the blade is close to the front
tires. Be careful not to let the blade hit the tires.
6. Extend the left blade lift cylinder, and set the tip of the left
cutting edge of the blade in line with the outside of the rear
wheels at the bottom of the slope face.
7. The rear right wheel must be in the V at the base of the slope
face.
8. Extend the right blade lift cylinder and set the angle to the desired bank slope face.
9. Gradually progress with the cutting.
REMARK
The wheels should normally be almost perpendicular.
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WARNING
OPERATION