Harrington Hoists and Cranes SHB Trolley - Manual (Page 28)

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Table 5-3 Hoist Inspection Methods and Criteria
Item Method Discard Limit/Criteria Action
Housing and
Mechanical
Components Visual, Auditory,
Function Trolley hoist components including suspension
shafts, track wheels, track wheel axles, load blocks,
suspension housing, chain attachments, clevises,
yokes, suspension bolts, shafts, gears, bearings,
stripper, pins, rollers, and bumpers should be free of
cracks, distortion, significant wear, and corrosion.
Evidence of same can be detected visually or via
detection of unusual sounds during operation. Replace.
Chain Guide Visual Excessive wear or press mark. Replace.
Bolts, Nuts and
Rivets Visual, Check
with Proper Tool Bolts, nuts, snap rings, split pins, and rivets should
not be loose, deformed, or corroded. Tighten or replace
as required.
Side Plates Visual Must be free of significant deformation Replace.
Track Wheel -
Tread Visual, Measure Diameter of the inside and outside tread surface
should not be less than the discard value shown in
Table 5-6 .
Replace.
Track Wheel - Gear Visual Teeth should not be cracked, damaged, or
excessively worn. Replace.
Upper Suspension
Shaft Visual, Measure Suspension shaft should not be bent. Diameter
should not be worn by 10% or more. Replace.
Lower Suspension
Shaft Visual, Measure Suspension shaft should not be bent. Diameter
should not be worn by 10% or more. Replace.
Warning Labels Visual Warning Labels should be affixed to the hoist (see
Section 1.2 ) and they should be legible.
Replace.
Trolley Hoist
Capacity Label Visual The label that indicates the capacity of the hoist
should be legible and securely attached to the hoist. Replace.
Twisted Hook Hook Swivel
Figure 5-1 Bottom Hook Checks