Maintenance work on the superstructure
8.5 Slewing bearing
8 - 30 3 302 756 en Maintenance manual
GMK6400
16.11.2018
8.5.4 Measuring tilting play
Reducing the
interval
• When after several years of intensive crane operation, half of the value for
the maximum permissible tilting play is reached, then you must reduce
the maintenance interval.
• Measure the tilting play from then on every three months (M 3).
Spare parts
and
tools
– Dial gauge (precision 0.01 mm (0.00039 in)) with tripod.
– Measurement report from when the truck crane was put into operation;
à Delivery receipt.
Prerequisites – The slewing bearing must first be checked for tightness;
à Checking the bolts, p. 8 - 23.
– The truck crane is supported and levelled with an outrigger span of at
least 8.70 x 6.30 m (28.5
x 20.6 ft); à Operating manual.
– The counterweight combination 35.0 t (77,150 lbs) must be rigged accord-
ing to the lifting capacity table and equipment on the truck crane.
– The lattice extension must have been removed.
– The auxiliary hoist has been removed.
– The main boom is telescoped to 0-88-0-0.
– The current load must not exceed 1 t (2 200 lbs) – if necessary unreeve the
hook block.
Type The GMK6400 truck crane is equipped with a slewing bearing of the bearing
type: RDV, three rows.
Type of slewing bearing GROVE part number
Roller slewing bearing
Bearing type: RDV, three rows
03211775
Model plate: Inside the inner ring.
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