Maintenance work on the superstructure
8.8 Slewing bearing
8 - 56 3 302 577 en Maintenance manual
GMK7450
16.08.2018
Access to the
outer ring
The outer ring is attached to the carrier by the
bolts (1).
• Check all 96 bolts (1) from above.
To do this, you must move the clear area (2)
on the turnta
ble round step by step to allow
all the bolts (1) to be checked.
Access to the
inner ring
The inner ring is attached to the turntable by
the bolts (1).
• Check all 96 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 screws, 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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