Maintenance work on the superstructure
8.5 Slewing bearing
8 - 30 3 302 574 en Maintenance manual
GMK3060
03.11.2017
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 on outriggers with an outrigger span of 6.825 x 4.40 m
(2
2.4x14.4ft) and is aligned horizontally.
– The counterweight 6.60 t (14 500 lbs) is rigged in accordance with the
lifting capacity table.
– The lattice extension must be removed.
– The auxiliary hoist must be removed.
– The main boom is telescoped to 100-0-0-0-0.
– The current load must not exceed 1 t (2 200
lbs) – if necessary unreeve the
hook bl
ock.
Type The GMK3060 truck crane is equipped with a slewing bearing of the bearing
type: KDV, single-row.
Type of slewing bearing GROVE part number
Ball slewing bearing
Bearing type: KDV, single-row
03010997
Model plate: Inside the inner ring.
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