tested by or under the direction of an
appointed person.
48 Test loads shall not exceed 110% of the manufac-
turer's load ratings.
49 Written reports shall be maintained showing test
procedures and confirming the adequacy of repairs.
MAINTENANCE
PREVENTIVE MAINTENANCE
50 Before adjustment and repairs are started on a crane,
the following precautions shall be taken as
applicable:
A. crane placed where it will cause the least interfer-
ence with other equipment or operations
B. all controls at the "off" position
C. starting means rendered inoperative
D. boom lowered to the ground if possible or otherwise
secured against dropping
E. relieve hydraulic oil pressure from all hydraulic
circuits before loosening or removing hydraulic
components
51 Warning or "OUT OF ORDER" signs shall be placed
on the crane controls.
52 After adjustments and repairs have been made, the
crane shall not be returned to service until all guards
have been reinstalled, trapped air removed from
hydraulic system (if required), safety devices reacti-
vated, and maintenance equipment removed.
ADJUSTMENTS AND REPAIRS
53 Any hazardous conditions disclosed by the inspection
requirements shall be corrected before operation of
crane is resumed, Adjustments and repairs shall be
done only by designated personnel.
54 Adjustments shall be maintained to assure correct
functioning of components, The following are
examples:
A. functional operating mechanism
B. safety devices
C. control systems
55 Repairs or replacements shall be provided as needed
for operation.
The following are examples:
A. critical parts of functional operating mechanisms
which are cracked, broken, corroded, bent, or exces-
sively worn
B. critical parts of the crane structure which are
cracked, bent, broken, or excessively corroded
C. crane hooks showing cracks, damage, or corrosion
shall be taken out of service. Repairs by welding are
not recommended
56 Instructions shall be provided by the manufacturer
for the removal of air from hydraulic circuits.
LUBRICATION
All moving parts of the crane, for which
lubrication is specified, should be regularly
lubricated per the manufacturer's
recommendations and procedures.
ROPE INSPECTION
57 Frequent Inspection
A. All running ropes in service should be visually
inspected once each working day. A visual inspec-
tion shall consist of observation of all rope which
can be in use during the days operations. These
visual observations should be considered with
discovering gross damage such as listed below,
which may be an immediate hazard.
1. distortion of the rope such as kinking,
crushing, un-stranding, birdcaging, main
strand displacement, or core protrusion.
Loss of rope diameter in a short length or
unevenness of outer strands should be
replaced
2. general corrosion
INSPECTION, TESTING AND MAINTENANCE
GENERAL
INSP 9/98
1-5.2.0
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