4-15
[2] REPLACEMENT WINCH WIRE ROPE
Always wear work leather gloves when replacing the wire rope.
CAUTION
• A diameter of the wire rope is to be measured at points where the wire repeatedly runs through
the sheave. A mean value needs to be determined through three-way measurement. (A
measurement should be performed at several points, spacing between the points.)
• Do not use the old wire rope regardless of the frequency of use.
• Always use Maeda genuine wire rope.
[CRITERIA FOR WINCH WIRE ROPE REPLACEMENT]
A wire rope undergoes wear and tear over time.
Prompt replacement is required if any of the following
events appears in the wire rope.
• 10% or more of strands (except a filler wire) in a twist of
the wire rope (6 crests) is broken.
NOTES
Change winching/boom telescoping wire rope when 13 or
more wires are broken.
• Wear equivalent to 7% or more of a nominal diameter occurs in
the wire rope diameter.
NOTES
• Replace an 8mm-dia wire rope if it is 7.5mm in diameter.
• Replace a 6mm-dia wire rope if it is 5.6mm in diameter.
• A kink is formed.
• Considerable deformation or corrosion is developed.
• A faulty end socket is used.