30
• Check every month the state and correct functioning of all the parts subject to wear: pins, valves, hoses,
sliding pads and bushings, etc. If necessary replace with genuine spare parts.
• It is absolutely forbidden to alterate the hydraulic circuit and open the safety seals. Failure to comply will
cause automatically the voiding of any warranty on the product. Valves adjustments or setting must be
done only by authorized installer workshops.
• Overheating of hydraulic oil may burn the sealing parts and alterate the oil itself. This can be caused by
an excessive oil flow of the pump or by repeated stroke ends of the cylinders.
• Check that the pump supplies the control valve with the oil flow suggested in our technical specifica
tions.
7.2 STABILIZING THE TRUCK
• Bearing in mind the job to be done, the vehicle has to be positioned in the most convenient position,
stopped with the parking brake and the tires blocked.
• The truck engine shall be kept idling (800/900 rpm).
• The hydraulic circuit of the crane
shall be activated as follows:
Cranes with pump driven by a power take-off
Engage the PTO by means of the appropriate air switch (normally located in the cab), while depressing
the clutch pedal.
If a mechanical coupling system is installed, the lever is behind the driving seat.
Cranes on stationary mounting
Switch-on the hydraulic power pack.
Cranes driven by DC power pack
The DC power pack is connected with the truck battery. The connection is made turning on the emergen-
cy button (pict. 9, P) located on the remote control. The electric pump will start every time a switch of the
remote control is moved. The crane can work even when the engine of the truck is off, but it is strongly
recommended of keeping the engine idling, so the alternator can continuously charge the battery of the
vehicle.
DANGER
DC electric motor overheating. Keep the electric pump running for short periods to avoid its
over heating. The maximum working period of the pump depends on the pressure requested
by the maneuvers, but should never exceed 10÷15 minutes in any case, with intervals of 20
min. to enable a sufficient cooling.
IMPORTANT
In cold weather and in winter it is advisable to wait a few minutes with the pump running at no
load before starting to operate the crane. (only for PTO - driven cranes)
• Extend the outriggers beams, acting separately on each side of the truck. Their release is made turning
180° upwards the locking handle (
2
) on picture 15. Pull the beam (
1
) on picture 15 out for a length of
approx. 20 cm (8 in.), then turn again the locking handle 180° downwards in its previous position. Pull
again out the outrigger beam, and the locking pin of the handle will automatically engage and lock the
beam when its working position is reached. Always extend fully the outrigger beams to their working
position (i.e.: maximum opening position) to grant the maximum stability of the vehicle and safety. Always
pull and push the outrigger beams acting on the handle (
3
) on picture 15 foreseen for this purpose, never
pull the hoses or piping.
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