Maeda CC1908S-1 - Correcting Winch Wire Rope Twisting

6.18 IRREGULAR MAINTENANCE M A E D A Crawler Crane
6-78 5/2020 CC1908S-1
CORRECTING WINCH WIRE
ROPE TWISTING
WARNING
Always wear thick leather work gloves when
handling the wire rope.
IMPORTANT
Rewind the wire rope from time to time to
reverse the hook block side and winch drum
side.
This will extend the wire rope service life.
If the wire rope becomes twisted, correct the
twisting as follows:
1. Examine the twisting direction from the
normal state of the hook and the number of
twists.
2. Operate the left-hand control lever to the
"Retract" side (pull toward you) to retract the
boom fully.
3. Operate the right-hand control lever to the
"Lower" side (push outside) to lower the
boom angle to approximately 20 degrees.
4. Operate the right-hand control lever to the
"Hoist down" side (push forward), and lower
the hook block to the verge of touching the
ground. Then operate the right-hand control
lever to the "Lower" side (push outside), lower
the hook block to the ground, and lower the
boom fully.
5. Turn the starter switch to the "OFF" position
to stop the engine. After that, place the lock
lever in the lock position.
6. Remove the retaining bolt (1) to pull out the
wedge socket pin (2) and remove the wedge
socket (3).
7. Install the wire rope end by forcibly twisting
"n" (number of falls of wire rope) times the
number of twists of the hook block in the
opposite direction (the opposite direction to
which the wedge socket tries to return
naturally when you release your hand from it)
to the hook block twisting checked in Step 1.
8. Start the engine and operate the boom
derricking lever to the "Raise" side (pull
inside) to raise the boom to the maximum
angle.
9. Operate the left-hand control lever to the
"Extend" side (push forward) to extend the
boom to the longest length.