Maintenance work on the superstructure
8.5 Slewing bearing
8 - 28 3 302 364 en Maintenance manual
GMK 4100L-1
25.11.2016
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 (M3).
Spare parts
and t
ools
– 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 have been previously checked for tightness;
à Checking the screws, p. 8 - 21.
– The crane must be rigged with an outrigger span of at least 8.66 x 5.31 m
(28.4x17.4ft) and be level;
à Operating Instructions.
– The auxiliary hoist, or alternatively th
e compensation weight 0.8 t
(1,750 lbs) must be rigged.
– No further counterweight must be been rigged; .
– The lattice extension must be removed.
– The main boom must be fully retracted
– The load being lifted must not exceed 1 t (2,200 lbs) – wh
ere necessary
u
nreeve the hook block.
Type The truck crane GMK 4100L-1 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
03272334 or 03272344
Model plate: Inside the inner ring.
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