Hitachi ZAXIS 470LC-5B Operator's Manual page 17

IMPORTANT: Do not operate the counterweight removal/
install operation lever to the full stroke. Operate the
cylinder as slow as possible.
24. Slowly lower the counterweight to the ground until full
weight is removed from the linkage, and lifting yokes (6)
move freely in slots (22).
25. Remove pins (10) to remove linkage of counterweight
and lifting yokes (6). Attach removed pins (10) to lifting
yokes (6).
26. Make sure lock nuts (8) are not loose.
27. Raise the counterweight removal/install device to the
end of its stroke. The buzzer in the cab activates then.
Lower the counterweight removal/install device until the
clearance between the device and the machine frame (C)
becomes approximately 100 mm.
28. Ensure the background of the counterweight removal/
install icon turns white and the buzzer stops.
IMPORTANT: If residual pressure is in the cylinders, the
background of the counterweight removal/install icon
turns red and the buzzer sounds continuously.
In that case, lower the counterweight removal/install
device to position (C) by operating the counterweight
removal/install operation lever until the monitor
display turns white and the buzzer stops.
29. Toggle the counterweight removal/install switch in the
cab to the OFF position.
30. Fully open stop valve (9) by turning the valve handle
counterclockwise.
31. Install top cover to the counterweight and three bottom
covers to the machine mainframe.
32. Install cover (16) over the counterweight removal/install
operation lever.
33. Close pump compartment door.
d
CAUTION: Avoid crushing injury. Do not go into the
movable range of the counterweight removal/install
device.
IMPORTANT: Avoid machine damage. Do not
place obstructions in the movable range of the
counterweight removal/install device.
COUNTERWEIGHT REMOVAL
9
8
6
MJAA-NACW1-002
22
C
MJAA-NACW1-009
MJAA-NACW1-014
10
16
9