362
20. Remove the wire rope (12) connected to the hook block,
following the procedure below.
CAUTION
• Be careful not to wind the wire ropes irregularly.
• Do not unwind after the hook block touches the ground,
since the wire ropes are wound irregularly inside the
winch drum when the hook is lowered further to the
ground.
(1) Make the main boom fully retracted and make sure the
main boom angle is approx. 20 degrees.
(2) Operate the winch lever to lower the hook block so that
it is barely touching the ground.
(3) Lower the hook to the ground by lowering the boom.
(4) Remove the bolt (39) and pull out the wedge socket
pin (38) to remove the wedge socket (37) from the
main boom.
(5) Remove the wire clip (40).
(6) Remove the rope wedge (41) by preparing a cylindrical
rod (A) of 6 to 8 mm and lightly tapping the rope wedge
with a hammer in the direction indicated by the arrow
(a).
(7) Pull out the wire rope (12) from the hook.
(8) Pull the wire rope (12) out of the weight (42) of the
over-hoist detector.
(9) Pull out all the wire ropes (12) from three sheaves on
the main boom tip.
(10) Hang the over-hoist detector weight (42) on the
weight hanger (25) on the left side (27) of the fly jib
mounting bracket.
21. Take the wire rope (12) you have removed in step 20 and
draw it through the sheave (44) at the center of the main
boom tip, and pull it out to the fly jib side.
CAUTION
When drawing the wire rope (12) through the sheave (44),
make sure it is running along the grooves of the sheave
(44).
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