6.18 IRREGULAR MAINTENANCE M A E D A Crawler Crane
6-80 5/2020 CC1908S-1
2. Remove the rope wedge (6) by lightly
tapping the round bar (A) with a hammer
in the direction indicated by the arrow
(a).
7. Pull out the wire rope (5) from the weight (8)
of the overwinding detector and from the
hook block (7).
8. Operate the right-hand control lever to "Hoist
down" side (push forward) to wind up the wire
rope (5) from the winch drum (9).
9. After winding up the wire rope (5) from the
winch drum (9), release the end of wire rope
(5) that is fixed to the winch drum (9) as
described below.
1. Place a 6 mm to 10 mm diameter round
bar (A) in contact with the rope wedge
(10).
2. Remove the rope wedge (10) by lightly
tapping the round bar (A) with a hammer
in the direction indicated by the arrow
(b).
10. Wind up the remaining wire rope (5)
completely.
[2] Attaching winch wire rope
WARNING
Be sure to attach the rope wedge clamping the
wire rope securely. Otherwise, there is a risk
of the wire rope becoming detached while
using the crane, resulting in serious
accidents.
IMPORTANT
• Take care to avoid irregular winding of the
wire rope on the winch drum when winding
up.
• Immediately after attaching a new rope,
hoist a weight (approximately 0.98 kN [100
kg]) with the boom extended and raised fully,
and repeatedly raise and lower the hook
several times with the engine running at low
idle to break in the new rope.
• The wire rope is coiled. Take care not to
form kinks in the rope when winding it up.
Be sure to unravel by rotating the rope to
pull it out of the winch drum.
Use the following procedure to attach the wire
rope:
1. Hold the end of the wire rope and pass the
wire rope (5) through the weight of the
overwinding prevention device, load sheave
(11) at the boom tip, wire guide (12) on boom
Nos. 2, 3 and 4, roller sheave (13), sheave
(14) inside the boom derricking cylinder
mounting bracket, and the slide sheave (15).
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