Mitsubishi Electric UM 5t Instruction Manual page 58

4. If the hoist hook block has been twisted in the Z direction, lower the hook block on to the
ground to sag the wire rope, and give several turns (number of twists + 1 twist) to the wire
rope, turning the wire rope in the direction shown below. (In the case of the 4-fall type,
carry out this operation on each side.)
5. If the hoist hook block has been twisted in the S direction, lower the hook block on to the
ground to sag the wire rope, and give several turns (number of twists + 1 twist) to the wire
rope, turning the wire rope in the direction shown below.
(In the case of the 4-fall type, carry out this operation on each side.)
After straightening the wire rope, turn the hook 180 ° clockwise and counterclockwise, and
6.
make sure that the hook returns to the initial position.
(If there is a nonconformity, straighten the rope again increasing the number of turns more
than the number of turns stated in Steps 4 and 5.)
* The wire rope assembly is an important part from the viewpoint of strength. When
replacing it, use the Mitsubishi genuine part. (The genuine wire rope has a stamp of the
Mitsubishi mark at the end.)
Ex.: In the case of the 2-fall type shown in Item 1
Number of twists + 1 twists
1 + 1 = 2 twists
Give two clockwise turns to the rope
support.
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