Maintenance And Service; Malfunctions And Their Repairs - SaMASZ FISHER Operator's Manual

OPERATOR'S MANUAL HYDRAULIC FRONT-LOADER EXTENSION
ARM

7. MAINTENANCE AND SERVICE

Tab. 2. Torque values for bolts

8. MALFUNCTIONS AND THEIR REPAIRS

In the event of a malfunction, immediately stop the machine and after the cutting assembly has
come to a complete stop, turn off the engine. Before disconnecting any of the hydraulic hoses, check
whether there is no pressure in the hydraulics and remember to cut-off the oil feed from the tan to the
machine's hydraulics. Hot or/and pressurized oil leak may cause serious bodily injuries. For the
machine's operator safety, stop the machine on an even ground. All hydraulic cylinders and moving
elements must be completely locked.
Defect
Shift cylinder cannot be
operated.
Rotation cylinder cannot
be operated, although
extension cylinder works
correctly.
Vibrations and noises
when extending the arm.
Rotary arm is lifting too
often.
Reason
Hydraulic connectors are not
connected to one pair of feed
connectors.
Hydraulic connectors are not
compatible with hydraulic
connectors on the vehicle.
Closed choke valve on the cylinder
(speed adjustment).
Control panel not connected.
Damaged solenoid.
No lubrication.
Damaged safety breakaway
device.
FISHER
Connect hydraulic connectors correctly.
Replace the connectors for correct ones.
Adjust choke valve.
Check if after the controller activation the
LED indicators are lit, check lighter outlet
and 3-pin plug at the machine. Make sure
that electric cables are not cut.
Check if coil on the valve operates correctly.
Otherwise, replace the coil.
Replace the solenoid.
Lubricate the slides in suspension frame.
Replace safety breakaway device if force
applied to the head, at which the arm is
lifted is less than 8000N.
Repair
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