Manitowoc Grove GMK 5200-1 Maintenance Manual page 253

Measuring tilting
play
Example: Base value + max. permissible wear =
0.35 mm (0.014 in) + 4.0 mm (0.157 in)
Maintenance manual
GMK5200-1
The base value of the tilting play is determined and documented by
Manitowoc Crane Care
bearing is put into operation or replaced.
The maximum permissible wear is 4.0 mm (0.157 in).
This results in the maximum permissible tilting play.
If the current tilting play is greater than the max. permissible tilting play,
you must have the slewing bearing replaced by
authorised GROVE dealer.
If the current tilting play is half as great as the max. permissible tilting play,
you must reduce the maintenance interval;
or an authorised GROVE dealer when the slewing
Measuring current tilting play
•
Raise the main boom to 80° and slew to –
135° – display (A).
•
Fasten a dial gauge on the front on the turn-
table (4) and place the button (1) on to the
lower ring (3) as close as possible to the gas-
ket (2).
•
Slowly lower the main boom to 30°. The
hook block may not touch the ground.
•
Read off from the dial gauge how far the
turntable is inclined and record this value as
the current tilting play;
play measurement report .
•
Remove the dial gauge.
•
Repeat the measurement with the slewing
angles
B –45°
C +45°
D +135°
3 302 746 en
Maintenance work on the superstructure
8.5 Slewing bearing
max. permissible tilting play
4.35 mm (0.171 in)
à
Appendix – Tilting
Manitowoc Crane Care
à
Reducing the interval , p. 8 - 28.
or an
8 - 29