Manitowoc MLC300 Service And Maintenance Manual

Reference Only
Manitowoc Published 11-22-17, Control # 257-02 5-47
MLC300 SERVICE/MAINTENANCE MANUAL HOISTS
5
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.
• Each work day, 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 5-26
)
- Loss of rope diameter (see Reduction in the Rope
Diameter on page 5-48)
- Broken wires—Record the number, distribution, and
type of broken wires (see Broken Rope Wires on
page 5-49)
- 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.
- End fitting wear/abrasion
- 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
- Take special care to observe the boom hoist ropes
and rotation-resistant ropes for evidence of core
failure or other deterioration (remove from service)
- Internal deterioration of rotation-resistant ropes may
not be readily observable
• Throughout the day, observe the wire rope during
operation, particularly the following:
- Pick-up Points—Sections of the wire rope that are
repeatedly stressed during each lift, such as the
sections that are in contact with the sheaves
- End Attachments—The point where a fitting is
attached to the wire rope or the point where the wire
rope is attached to the drum
- Abuse Points—The point where the wire rope is
subjected to abnormal scuffing and scraping
WARNING
Personal Injury Hazard!
Prior to conducting an inspection of wire rope:
• Lockout-tagout the crane 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.
Item Description
1 Dog-Leg or Kink
2Drum Abrasion
3 Drum Crushing
4 Sheaves Too Small
5Corrosion
6 Bird Cage (sudden release of load)
FIGURE 5-26

Manitowoc MLC300 Specifications

General

Brand	Manitowoc
Model	MLC300
Category	Construction Equipment
Language	English