Manitowoc MLC150-1, Руководство по техническому обслуживанию

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HOISTS MLC150-1 SERVICE/MAINTENANCE MANUAL
5-40
Published 03-21-2021, Control # 264-01
• Welding spatter must never be allowed to come in
contact with the wire rope or wire rope ends. In addition,
be sure that the wire rope is not an electrical path during
other welding operations.
• Wire ropes are manufactured from special steels. If
heating a wire rope assembly is absolutely necessary for
removal, the entire wire rope assembly must be
discarded.
• On systems equipped with two or more wire rope
assemblies operating as a matched set, they must be
replaced as an entire set.
• Do not paint or coat wire ropes with any substance
except approved lubricants.
Daily Inspection
Wire rope should be inspected in accordance with ANSI/
ASME B30.5 and OSHA 29 CFR 1926.1413. A running
record of the condition of each wire rope should be noted in
the equipment inspection log.
NOTE: Daily inspection does not require that the rope be
cleaned or probed.
• Each workday, prior to crane work, visually inspect all
rope that can reasonably be expected to be used that
day. Check for obvious damage, including the following:
- Rope defects (see Figure 5-25 )
- Loss of rope diameter (see Reduction in the Rope
Diameter on page 5-42 )
- Distortion to the uniform structure of the rope
- Broken wires—Record the number, distribution, and
type of broken wires (see
Broken Rope Wires on
page 5-42 )
- Internal wear or broken wires for ropes operating on
synthetic sheaves. Common indicators of internal
deterioration include localized reduction in the rope
diameter, corrosion between the strands, localized
lengthening of lay, wire displacement, or wire
distortion.
- Gross damage, deterioration, or corrosion to the
end connections
- Evidence of heat, electrical, or lightning damage
- Localized change in lubrication condition
- Minor or general corrosion
- Areas that deteriorate more rapidly, such as the
flange points, the crossover points, and the
repetitive pickup points on the drums
Item Description
1 Dog-Leg or Kink
2 Drum Abrasion
3 Drum Crushing
4 Sheaves Too Small
5 Corrosion
6 Bird Cage (sudden release of load)
FIGURE 5-25
WARNING
Personal Injury Hazard!
Prior to conducting an inspection of wire rope:
• Stop the engine and lockout-tagout the ignition switch
when removing or installing the wire rope assemblies.
• Use safety glasses for eye protection.
• Wear protective clothing, gloves, and safety shoes as
appropriate.
• Use supports and clamps to prevent uncontrolled
movement of the wire rope, parts, and equipment.
REFERENCE
ONLY