100
ZMT-ZMTE
Rev. 5.1
TROUBLE SHOOTING
09-TROUBLESHOOTING (Generale)
PROBLEMS PROBABLE CAUSE REMEDIES
Incorrect cutting
height
Incorrect roller position
Adjust the roller in order to reduce or increase
cutting height
Excessive machine
operating noise
Loose bolts
Check and correct the tightening of screws and
nuts if necessary
Machine with cracks or initial signs
of breakage
Have the frames repaired at
authorised Ferri workshops.
Check to see if there are any moving parts
unbalanced and correct the defect
Worn bearings Replace
Gearbox noise
Lack of oil Fill to level
Worn or damaged gears Repair or replace
Worn or damaged bearings Repair or replace
Premature ail wear
Flails touch the ground or work on
rocky soil
Adjust height of cut
Breakage of roller
bearings
Violent impact on the ground when
the machine is lowered
Lower it gently
Dirty or little greased bearings Clean and/or grease
Flail-holder shaft
speed decreases
The hydraulic circuit loses pressure
Check the eciency of the pump and the
hydraulic motor.
Check the hydraulic system pressure settings.
These checks must be performed at specialised
workshops
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