48
2) Adjusting twisted wire rope
Wire rope tends to turn in the untwisting direction under
tension. When the hook carries two or more wire rope
slings, they can easily turn, especially when they are still
new. Wire rope becomes steady with use.
The wire rope adjustment procedure is:
z Extend the boom fully
z Set the boom to an angle of about 65 deg
z Hoist a load so that the wire ropes will be tense
z Check the wire ropes for the number of turns
z Remove the wire socket, and turn it in the wire rope
untwisting direction by the number of wire rope turns
multiplied by the number of wire rope slings.
z After attaching the wire rope socket back in position,
wind up and down the wire ropes all the way and
repeat it a few times to check that they are back to
normal. If there is still a twist remaining, repeat the
above process.
To Next Page
Loading...
