Maeda CC1908S-1 - Page 157

M A E D A Crawler Crane 5.4 CRANE OPERATION
5/2020 CC1908S-1 5-41
1. Operate the left-hand control lever (2) to the
"Retract" side (pull toward you) to retract the
boom fully.
Retracting the boom lowers the hook
block. Use the hoisting operation as
appropriate to hoist the hook block.
2. Operate the right-hand control lever (1) to
the "Lower" side (push outside) to lower the
boom until it stops.
Lowering the boom lowers the hook
block. Use the hoisting operation as
appropriate to hoist the hook block.
3. Each time the hook block lowers and nears
the ground with the operations in Steps 1
and 2, operate the right-hand control lever
(1) to the "Hoist up" side (pull toward you),
and hoist the hook block so that it is not
overwound.
If the hook block is over-hoisted,
overwinding is detected, the warning
buzzer sounds, and the hoisting
operation stops automatically.
4. Operate the left-hand control lever (2) to the
"Left slewing" side (push outside) or to the
"Right slewing" side (pull inside) and slew so
that the boom is positioned at the centre of
the machine body.
The boom stowage is completed with
the operations in Steps 1 to 4.
Stow the hook block (3) in the simple
stowage position using the operations
described in the following procedures:
5. Operate the right-hand control lever (1) to
the "Hoist up" side (pull toward you) and
hoist the hook block (3) until it pushes up the
weight (4) and stops automatically
(overwinding state).