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INSTRUCTIONS JIB CRANE SERIES GBA - GBP
MAN05MGO5
6.3.3 Check of efficiency of parts and components
•Themetalstructuresofthejibcrane,aswellasnormalalterationsduetoenvironmentalfactorsandwearof
mobile parts (hinges), can be subject, even inadvertently or during handling operations, to bumps, contact or
grazing with other equipment or to anomalous strain which can cause damage to the frames, welding and pivots.
Therefore, after careful cleaning, the structures must periodically undergo scrupulous checks to ensure their
suitability and if necessary, any damage be remedied.
•Thebrackets,composedofplatesandpivot,whichformhingedelements,aresubjecttowearastheyaremobile,
swinging elements exposed to sliding friction in the areas of contact. If excessive wear is found, substitute them
during the check.
•Allscrewbolts,highresistanceplugsandpinsmustbedisassembledandcarefullycheckedannually,andsomust
the relative seatings.
•Checktheclampingcoupleofthefixingboltsofthecolumnandthebracket,accordingtothegivencouples
(see tables on page 12).
Fortheindividualpartsofthejibcranethefollowinginstructionsmustbestrictlyadheredto:
Annual check of the efficiency of structural elements, welding, pivots and bolted
couplings
(fig. 79):
Repairorsubstitutehingedpartswhereonefinds:
•deformation:
lengthening, crushing, staining, bending
•wear:
WORNPARTSSCARCEMENTINCISIONSABRASIONSCORROSIONOXIDATIONSCRATCHINGPEELING
point
•breakage:
CRACKSINTHEWELDINGCRACKINGCUTSORINCISIONSBROKENPARTS
•variationofasection
*
10%,orofthediameterorthickness
*
5%comparedto
initial values.
DONATI
TECHNICIAN
DONATISERVICE
fig.79
KMAN05MG05
