Maintenance work on the superstructure
8.5 Slewing bearing
8 - 24 3 302 756 en Maintenance manual
GMK6400
16.11.2018
Access
The outer ring is attached to the carrier by the
bolts (1).
• Check all 80 bolts (1) from above.
To do this, you must move the clear area (2)
on the turntable around step by step to
allow all the bolts (1) to be checked.
The inner ring is attached to the turntable by
the bolts (1).
• Check all 80 bolts (1) from below.
To do this, you must rotate the turntable
gradually to gain access to a pair of bolts (1)
opposite one another, through the
openings (2) in the carrier.
G
Danger of the slewing bearing being ripped off!
If while checking you notice very loose, broken or missing bolts, then the
slewing bearing has been overloaded and is no longer safe to use. During
crane operation, the slewing bearing may rip off suddenly and thus cause
fatal accidents.
Do not put the truck crane back into operation and have the slewing bearing
repaired by
Manitowoc Crane Care.
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