Technical data

13
SUPPLEMENTARY
BEAMS
GRU FASSI
13 MANOEUVRES AND CONTROLS TO STABILIZE
THE VEHICLE
13.1 Generality
The outriggers rams prevent damaging stresses both to the frame and to the
vehicle suspensions on which the crane is mounted to and assure the stability
of the unit during load handling.
(!) ATTENTION (!)
Be very careful when stabilizing the vehicle; make sure that no one is or
transits in close proximity of the working area of the outriggers.
(!) ATTENTION (!)
The crane stability is maintained by the maximum extension of the
outrigger supports, by the solidity of the base underneath the plates of
the outrigger rams and by the observance of the capacity plates. To check
the maximum working pressure see Paragraph 2.3 Technical data
Check that the outrigger rams are applied on a solid base; if necessary use
larger outrigger base plates (available on request) to avoid sinking.
When stabilization is complete the wheels of the vehicle must still be in contact
with the ground and the suspensions must not be fully unloaded.
Stabilize the crane so as to operate on a horizontal plane with a maximum tole-
rance of 1,5 degrees.
While loading, it may be necessary to vertically adjust the outrigger rams to
prevent an overload on the outriggers, then stabilize again.
While unloading, the outrigger rams may not be perfectly in contact with the
ground because of a rise in the suspension; it is therefore recommended to
stabilize the vehicle during operation to avoid an overturn.
DE 6409A