Crane operation
10.5 Crane operation with main boom
10 - 94 3 302 633 en Operating Instructions GMK5250L
27.09.2017
Fixed length,
intermediate
length, telescop-
ing length
There are lifting capacity tables for main boom fixed lengths, main boom
intermediate lengths and main boom telescoping lengths.
The lengths are automatically detected by the RCL, and the corresponding
lifting capacities according to the
lifting capacity table are enabled and dis-
played automatically.
Main boom fixed length
Main boom fixed lengths have the greatest lifting capacities. A main boom
fixed length is reached if:
– All telescopic sections are locked to a fixed length
– All telescopic sections are set down.
Main boom intermediate length
A main boom intermediate length is reached if not all telescopic sections are
locked to fixed lengths.
Extend the main boom to the required length before hoisting the load!
You cannot telescope the boom with the specified lifting capacities for main
boom intermediate lengths.
Main boom telescoping length
The main boom is at a telescoping length if it is extended to an intermediate
length and may be telescoped with the current load. The size of the load that
can be telescoped depends on the angle of inclination and on the degree of
lubrication of the main boom.
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