Manitowoc GROVE GMK6400

Maintenance work on the superstructure
8.5 Slewing bearing
16.11.2018
Maintenance manual 3 302 756 en 8 - 33
GMK6400
Checking the lock The lock is operated via the ECOS display in the crane cab;
à Operating manual.
• Monitor the locking cylinder (1) from a safe
distance.
• Let a second person lock the turntable in the
crane cab.
• Check whether the locking cylinder (1)
extends into the opening (3) straight and
without jerks.
• Let a second person unlock the turntable in
the crane cab.
• Check whether the locking cylinder (1)
retracts into the housing (2) straight and
without jerks.
If any damage is found, report it to Manitowoc Crane Care or an authorised
GROVE dealer.