17
JLC680-2 Rev AA
April 2019
SECTION VIII — INSPECTION
INSPECTION
To maintain continuous and satisfactory operation, a regular
inspection procedure must be initiated to replace worn or damaged
parts before they become unsafe. Inspection intervals must be
determined by the individual application and are based on the type
of service to which the hoist will be subjected. The type of service
to which the hoist is subjected can be classified as “Normal”,
“Heavy”, or “Severe”. Normal Service: Involves operation with
randomly distributed loads within the rated load limit, or uniform
loads less than 65 percent of rated load for not more than 25
percent of the time.
HEAVY SERVICE:
Involves operating the hoist within the rated load limit which
exceeds normal service.
SEVERE SERVICE:
Normal or heavy service with abnormal operating conditions or
constant exposure to the elements of nature. Two classes of
inspection - frequent and periodic - must be performed.
FREQUENT INSPECTIONS:
These inspections are visual examinations by the operator or other
designated personnel. Records of such inspections are not required.
The frequent inspections are to be performed monthly for normal
service, weekly to monthly for heavy service, and daily to weekly for
severe service, and they should include those items listed in Table 7.
PERIODIC INSPECTIONS:
These inspections are visual inspections of external conditions by
an appointed person. Records of periodic inspections are to be
kept for continuing evaluation of the condition of the hoist. Periodic
inspections are to be performed yearly for normal service, semi-
annually for heavy service and quarterly for severe service, and they
are to include those items listed in Table 8.
CAUTION: Any deficiencies found during inspections are to
be corrected before the hoist is returned to service. Also, the
external conditions may show the need for disassembly to
permit a more detailed inspection, which, in turn, may require
the use of nondestructive type testing
PREVENTATIVE MAINTENANCE
In addition to the above inspection procedure, a preventive
maintenance program should be established to prolong the useful
life of the hoist and maintain its reliability and continued safe use.
The program should include the periodic and frequent inspections
with particular attention being paid to the lubrication of the various
components using the recommended lubricants (see Figure 11).
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