5
INSPECTION AND MAINTENANCE
Prior to initial use, all new, modified, and repaired hoists shall be inspected in accordance with Table 2.
Thereafter, inspections shall be conducted at intervals shown in Table 1; and items to be inspected are indicated
in Table 2 by F (Frequent) or P (Periodic).
Frequent Inspections – Visual inspection by the operator or other authorized person.
This inspection includes listening for unusual sounds while the hoist is operated that may indicate deficiencies.
Periodic Inspections – Audible-visual inspection as for Frequent Inspections, with some disassembly to allow a more
detailed inspection if external conditions indicate the need.
Exception: Brakes require more than audible-visual inspection. Check daily by operating lever hoist with
and without load, stopping at various positions to test holding power and amount of drift, if any occurs.
TABLE 1 - FREQUENCY OF INSPECTION
SERVICE
FREQUENT (F) INSPECTION
PERIODIC (P) INSPECTION
Normal
Monthly
Annually
Heavy
Weekly to Monthly
Semi-Annually
Severe
Daily to Weekly
Quarterly
TABLE 2 - INSPECTION CHART
In chart, F indicates Frequent Inspection, P indicates Periodic Inspection
LOCATION
CHECK FOR
F
P
LOCATION
CHECK FOR
F
P
Braking
mechanism
Slipping under load
✖
Hook Retaining
Members (Pins, Bolts,
Nuts)
Not tight or secure
✖
Hard to release
✖
Brake Parts
Glazing
✖
Hook Latch
Damaged;
does not close
✖
Brake Discs
Suspension Members
(Sheaves, hand-wheels,
chain attachments,
suspension bolts or pins)
Excessive wear
✖
Oil contamination
✖
Cracks
✖
✖
Pawl; Ratchet
Excessive wear
✖
Gears
Distortion
✖
Pawl Spring
Corrosion; stretch
✖
Broken or worn teeth
✖
Hooks
Chemical damage
✖
Cracks
✖
Deformation
✖
Inadequate lubrication
✖
5% in excess of normal
throat opening
✖
Load Block; Suspension
Housing
Distortion
✖
✖
10° twist from plane of
unbent hook
✖
Cracks
✖
✖
Cracks (dye penetrant,
magnetic particle, or other
suitable detection method)
✖
Trolley; Supporting
Structure
Possible inability to
continue supporting
imposed loads
✖
Bolts, Nuts, Rivets
Not tight or secure
✖
WARNING Label
Removed or illegible
✖
Refer to ASME B30.21 for additional information on inspection, test, and maintenance.
