Technical data

24.3 Operations to be carried out only by an authorized
service center
FAULTS CAUSE REMEDIES
The crane does not lift Non efficiency Replace the pump
the loads indicated of the pump
on the capacity plate
(main pressure or auxiliary) Check the pressure,
valves not properly adjust the valves
adjusted, or worn or replace them!
Ram seals are Replace the seals
not properly fitted
A boom of the crane The safety check valve Replace the valve
does not hold up the load the ram is open
and visually lowers
Oil leaks inside the ram Defective seals,
replace them!
The crane does not Valves controlling the Adjust the valves
rotate properly rotation not adjusted
- WITH RACK: Wear of rotation guide shoe Replace the guide shoe
Wear of the seals Replace the seals
of the rotation cylinder
- WITH SLEW RING: Wear of the slew ring Check the slew ring wear,
replace if necessary
Wear of the Check the motore-
motoreducer group ducer group wear,
replace if necessary
The extension booms Wear of guide shoes Check the
do not completely extend guide shoes wear,
or work jerkily replace if necessary
Vibrations in Non efficient pump Check the pump
crane operations
Noteable decrease in Non efficient pump Check the pump
movement speed
24.3
POSSIBLE FAULTS
GRU FASSI