Komatsu Utility 76243, Operation & Maintenance Manual

Page: 185 / 302

OPERATION
OPERATION
3-125
ADJUST ANGLE OF BLADE EDGE 3
(Angledozer, power tiltdozer)
WARNING
It is dangerous if the work equipment moves by mistake when adjusting angle of the blade edge. Set the
work equipment in a stable condition, then stop the engine and lock the work equipment securely with the
work equipment lock lever.
Adjust the angle (
θ
) of the blade edge to match the type of soil.
ANGLEDOZER
To make the length of the left and right braces the same,
change distance (
l
) between the joints and adjust the cutting
angle.
Adjust distance (
l
) between the joints as follows:
To INCREASE distance (
l
), INCREASE cutting angle (
θ
).
To DECREASE distance (
l
), DECREASE cutting angle (
θ
).
The standard cutting angle (
θ
) is 54°.
The standard distance (
l
) between the joints is 1493 mm.
POWER TILTDOZER
Turn the brace with bar handle (1) and the distance (
l
)
between the joints to change the cutting angle (
θ
) as follows.
INCREASE distance (
l
) to INCREASE angle (
θ
)
DECREASE distance (
l
) to DECREASE angle (
θ
).
The standard cutting angle (
θ
) is 52°.
The standard distance (
l
) between the joints is 1389 mm.
Cutting angle
θ
Advantages Disadvantages
Large
•Amount of soil spilled to rear of blade is small
•Separation of soil is good and little soil is car-
ried back •Soil digging resistance and rolling-up resis-
tance are large
•Load pushed by blade is small
Small
•Soil digging resistance and rolling-up resis-
tance are small
•Load pushed by blade is large
•Cutting amount on rough surfaces is good
•Amount of soil spilled to rear of blade is large
•Separation of soil is poor and a lot of soil is
carried back