Komatsu WA800-1 Operation & Maintenance Manual page 56

ADJUSTMENT OF WORK EQUIPMENT
ADJUSTING BUCKET
POSiTlONER
Lower the bucket to the ground
and adjust the bucket to the
desired digging angle. Set the
bucket control lever at HOLD,
stop the engine and adjust as
follows.
Loosen two bolts (I) and adjust
the mounting bracket (4) of the
proximity switch so that the rear
tip of angle (2) is in line with the
center of the sensing surface of
proximity switch (3). Then tighten
the bolts to hold the bracket in
position.
W-04285
3. Loosen two nuts (5) and to make
a clearance of 3 to 5 mm be-
tween angle (2) and the sensing
surface of proximity switch (3).
Then tighten the nuts to hold in
position.
Ir Tightening torque:
1.75 2 0.25 kgm
4. 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 position and check that the
bucket control lever is automati-
cally returned to HOLD when the
bucket reaches the desired angle.
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BUCKET LEVEL INDICATOR
(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" to cutting edge