Maintenance Of The Slip Ring Assemblies - Manitowoc GROVE GMK7450 Maintenance Manual

Maintenance work on the superstructure
8.13 Cable drums and slewing angle sensor
S
G
Maintenance of
the slip ring
assemblies
8 - 112
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Risk of damage to the RCL!
Before maintenance work on the slip ring assemblies, always switch off the
battery master switch so that the cable drum is without power.
This prevents short circuits which may lead to damage to the rated capacity
limiter (RCL).
Risk of crushing from movement of the main boom!
Perform maintenance work only after the truck crane has been shut down.
Always ensure that the truck crane is protected from unauthorised use
before beginning maintenance work. Remove the keys from the crane cab
and put up warning signs.
•
Remove the cover (1) or (2).
•
Clean and dry the cover.
•
Replace the gasket if necessary.
•
Only use a cloth and compressed air to
remove any dirt on the slip rings (2).
•
Do not use spray oil.
•
Check to make sure all screws (1) are tight.
•
Attach the cover to the cable drum.
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GMK7450