4.6
R
ECOMMENDATIONS FOR USE
•
Most of the drawbacks and failures that may occur during the use of the CRUSHER is caused by the
loosening of the fixing parts and by the presence of leaks that are not promptly eliminated.
•
Since during the running-in phase there is a general settling of all mechanical parts and hydraulic
connections, in this phase it is essential to carry out the checks of the CRUSHER with the utmost
accuracy.
•
Start the work with the CRUSHER only after having positioned the excavator firmly on a flat and non-
yielding surface.
CAUTION: In case of contact with voltage conductors, DO NOT get out of the vehicle, but maneuver
in order to eliminate the contact and reach a safe distance.
4.7
M
ALFUNCTIONS AND TROUBLESHOOTING
ANOMALY
CAUSES
REMEDIES
Locked rotation
a) Dirt, corrosion
b) Presence of foreign bodies
a) Clean and dislodge the CRUSHER by
lightly hammering it on the front
b) Open the cover of the horizontal plate
and remove the foreign bodies
Jaw blocked
a) Oil pressure too low
b) Dirty or defective non-return valve
a) Check and, if necessary, increase the
control pressure
b) Clean or, if necessary, replace the
valve
Oil leakage from hydraulic
cylinders and/or
connectors
a) Inefficient seals
a) Replace the seals
Insufficient oil pressure
a) Incorrect calibration of the relief valve
b) Jammed relief valve
c) Locked or worn out distributor
d) Worn seals
a) Calibrate the valve correctly
b) Clean or replace the valve
c) Replace the distributor
d) Replace the seals
29
CRUSHER FR SERIES
