Harrington Hoists and Cranes GT Trolley - Manual (Page 54)

5.7 Inspection Methods and Criteria
5.7.1 This section covers the inspection of specific items. The list of items in this section is based on those
listed in ANSI/ASME B30.16 for Frequent and Periodic Inspection. In accordance with ANSI/ASME
B30.16, these inspections are not intended to involve disassembly of the trolley. Rather, disassembly
for further inspection would be required if frequent or periodic inspection results so indicate. Such
disassembly and further inspection should only be performed by a qualified person trained in the
disassembly and re-assembly of the trolley.
Table 5-3 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.
Housing and
Mechanical
Components Visual, Auditory,
Vibration,
Function Trolley components including, suspension shafts,
track wheels, track wheel axles, clevises,
connection yokes, suspension bolts, shafts, gears,
bearings, 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 or
vibration during operation. Replace.
Side Plates Visual, Measure Must be free of significant deformation. For 8-20
Ton trolley, the difference of dimension “A” and “B”
should not exceed .0787 (2mm). See Figure 5-1 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 Visual, Measure Diameter of the inside and outside tread surface
should not be less than the discard value shown in
Table 5-4. Replace.
Track Wheel - Gear Visual Teeth should not be cracked, damaged, or
excessively worn. Replace.
Suspension Shaft Visual, Measure Suspension shaft should not be bent. Diameter
should not be worn by 10% or more. Replace.
Suspenders Visual, Measure Never use the suspender if its dimension of D2 –
D1, d or h exceed the limits of Table 5-5. Replace.
Cable Hangers Visual Cable Hangers should not be damaged or
significantly worn. Movement should be smooth
and should not cause the Power Supply Cable to
twist or kink. Repair or replace
as necessary.
Pendant - Labels Visual Labels denoting functions should be legible. 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.
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