Manitowoc 999, Service And Maintenance Manual

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Reference
Only
Manitowoc
Published 05-16-17, Control # 233-03
5-13
999 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 the wire rope should
be noted in the equipment inspection log (see
Maintain a
Wire Rope Condition Report ).
See Figure 5-9
1. 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:
- Rope defects such as shown in Figure 5-9 .
- Loss of rope diameter (see Reduction in Rope
Diameter ).
- Broken wires—Record the number, distribution and
type of broken wires (see
Broken Rope Wires ).
- Internal wear or broken wires for ropes operating
on synthetic sheaves. Common indicators of
internal deterioration include localized reduction in
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 flange
points, crossover points, and repetitive pickup
points on drums.
- Take special care to observe 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.
2. Throughout the day, observe wire rope during operation,
particularly:
- Pick-up Points—Sections of wire rope that are
repeatedly stressed during each lift, such as those
sections in contact with 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:
• Always lock out equipment power when removing or
installing wire rope assemblies
• Always use safety glasses for eye protection
• Wear protective clothing, gloves, and safety shoes as
appropriate
• Use supports and clamps to prevent uncontrolled
movement of wire rope, parts, and equipment
FIGURE 5-9
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)
M100655a-f
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