Komatsu WA320-5H, Руководство по эксплуатации и техническому обслуживанию, Страница: 154 / 321

OPERATION
OPERATION
3-95
ADJUSTING BUCKET POSITIONER 3
1. Lower the bucket to the ground, set to the desired digging
angle, return the bucket control lever at HOLD, then set the
safety lever to the LOCK position and stop the engine.
2. Loosen 2 bolts (1), adjust the position of mounting bracket
(4) of the proximity switch so that the rear tip of bar (2) is in
line with the center of the sensing surface of proximity
switch (3), then tighten bolts to hold the bracket in position.
3. Loosen 2 nuts (6), adjust so that clearance (A) between
support (5) and the sensing surface of proximity switch (3)
is 0.5 to 1.0 mm (0.020 to 0.039 in), then tighten the nuts to
hold in position.
Tightening torque: 14.7 to 19.6 N·m (1.5 to 2.0 kgf·m, 10.8
to 14.5 lbft)
4. Loosen 2 bolts (7), adjust so that clearance (B) between
bar (2) and the sensing surface of proximity switch (3) is 3
to 5 mm (0.118 to 0.197 in), then tighten the bolts to hold in
position.
5. After adjusting, start the engine and raise the lift arm.
Operate the bucket control lever to the DUMP position,
then operate it to the TILT BACK position and check that
the lever is automatically returned to the HOLD position
when the bucket reaches the desired digging angle.
BUCKET LEVEL INDICATOR 3
(A) and (B) at the top rear of the bucket are the level indicators,
so the bucket angle can be checked during operations.
(A): Parallel with cutting edge
(B): 90 degrees to cutting edge