Komatsu — 12.12.1 ADJUSTING THE BOOM KICKOUT

OPERATION 12.12 ADJUSTING THE WORK EQUIPMENT POSTURE WARNING Stop the machine on flat ground and put the blocks in front and behind the wheels. Apply the parking brake. Secure the front and rear frames with safety bar. Never go under the work equipment when the arm is raised. The boom kickout makes it possible to set the bucket so that it automatically stops at the desired lifting height (lift arm higher than horizontal) and the bucket positioner makes it possible to set the bucket so that it automatically stops at the desired digging angle. The setting can be adjusted to match the working conditions. 12.12.1 ADJUSTING THE BOOM KICKOUT 1. Raise the bucket to the desired height.

Set the lift arm control lever at Hold and lock the lever in position. Then stop the engine and adjust as follows. 2. Loosen the two bolts (1), and adjust the plate (2) so that the bottom edge aligns with the center of the sensing surface of the proximity switch (3). Tighten the nuts to the plate. 3. Loosen the two nuts (4) and make a clearance from 3 to 5 mm (0.12 to 0.20 in) between the plate (2) and the sensing surface of the proximity switch (3). Tighten the nuts. Tightening torque: 17.2 ± 2.5 N 4. After adjusting, start the engine and operate the lift arm control lever. Check that the lever automatically returns to HOLD when the bucket reaches the desired height. WA450-3MC 2-70