Maintenance work on the superstructure
8.4 Slewing gear
8 - 18 3 302 574 en Maintenance manual
GMK3060
03.11.2017
• Press the service brake pedal (1) for the slewing gear brake down and hold
it down.
• Move the control lever slowly to the end stop and wait until the pressure
in the hydraulic circuit has risen to approx. 200 bar (approx. 2,900 psi).
– If the superstructure does not slew, the braking force of the slewing
gear brake is adequate.
– If the superstructure slews, the slewing gear brake is defective and
must be repaired immediately by
Manitowoc Crane Care or an
authorised GROVE dealer.
• Switch the slewing gear off and switch the engine off.
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