Maintenance work on the superstructure
8.5 Slewing bearing
8 - 24 3 302 574 en Maintenance manual
GMK3060
03.11.2017
Access
The outer ring is attached to the carrier by the
bolts (1).
• Check all 52 bolts (1) from above.
To do this, you must rotate the clear area (2)
on the superstructure gradually to check all
the screws (1).
The inner ring is connected to the
superstructure by the bolts (1).
• Check all 52 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 longe
r 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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