FERRI T380D Series Use And Maintenance Manual page 122

TROUBLE SHOOTING
PROBLEMS
Irregular arm
operation
Flail head rotor fails
to start
Leakage of oil from
the pump
Belts break too soon
Belts slip
on pulleys
122
PROBABLE CAUSE
Manoeuvre speed not suitable
Air present inside hydraulic circuit
Limited hydraulic flow
Mechanical transmission missing
Oil excided from the pump
Belt tension too high
Pulleys out of alignment
Flails touch the ground
Tractor has more power than can be
withstood by the machine
Insufficient belt tension
T380D-T430D
REMEDIES
Adjust the number of tractor PTO rpm
Adjust the manoeuvre speed of the function
involved by means of adjustable choke (if
present). Otherwise, contact an authorised
workshop
Bleed the air from inside the circuit
Check motor operation.
Repair or replace motor
Make sure that the hydraulic hoses are not
clogged or damaged. Repair or replace the
hydraulic hoses
Make sure that the discharge filter or delivery filter
(if present) is not clogged. If it is clogged, replace
it
Check the rotor distributor flexible hose control
cable. Adjust the cable
Check bevel gear pair box operation. Repair or
replace
Check the condition of the joints, seals, and
hoses (especially for drainage). Replace if
clogged or damaged
Check the pre-tension of the belts
Align the belts
Adjust height of cut
Connect the machine to a tractor with adequate
power
Check the pre-tension of the belts
Rev. 1.0