Harrington Hoists and Cranes ED-DA Hoist - (ED3) - Manual (Page 31)

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Table 5-7 Mini Trolley Inspection Methods and Criteria
Item Method Criteria Action
Functional operating
mechanisms.
Visual, Auditory
Mechanisms should be properly adjusted and
should not produce unusual sounds when
operated.
Repair or replace
as required.
Mechanical
Components
Visual, Auditory,
Vibration,
Function
Trolley components including, suspension shafts,
track wheels, track wheel axles, suspension bolts,
shafts, bearings and pins should be free of cracks,
distortion, significant wear and corrosion.
Evidence of same can be detected visually or via
detection of unusual sounds or vibration during
operation.
Replace.
Side Plates Visual Must be free of significant deformation Replace.
Bolts, Nuts, Snap
Rings, and Split Pins Visual, Check
with Proper Tool Bolts, nuts, snap rings and split pins should not be
loose. Tighten or replace
as required.
Track Wheel – Tread
and Flange
Visual, Measure
Diameter of the tread surface and the thickness of
the wheel flange should not be less than the
discard value shown in Table 5-8.
Replace.
Suspension Bolts Visual, Measure
Suspension bolts should not be bent. Diameter
should not be worn by 10% or more.
Replace.
Warning Labels Visual
Warning Labels should be affixed to the pendant
cord (see Section 1.2) and they should be legible.
Replace.
Trolley Capacity
Label
Visual
The label that indicates the capacity of the trolley
should be legible and securely attached to the
trolley.
Replace.
Table 5-8 Mini Trolley Wear Dimensions
“ D” Dimension
inch (mm)
“ t” Dimension
inch (mm)
Standard Discard Standard Discard
1.57 (40) 1.50 (38) 0.32 (8) 0.21 (5.33)