1.68
1.68
TROUBLE SHOOTING
FAULT
POSSIBLE CAUSE
REMEDY
After initial satisfactory
operation machine loses
power.
Worn pump or motor
Replace as necessary
Low hydraulic oil level
Fill hydraulic oil tank to correct level
Incorrect oil viscosity
Renew oil in hydraulic tank with hydraulic
oil of correct viscosity grade, refer to
SPECIFICATIONS
Oil filter element blocked
Change filter element
Faulty pressure relief valve
Have relief valve cleaned and pressure
checked. Consult your authorised dealer
Overheating
Check cylinder to bottom blade adjustment.
Reduce work rate i.e. increase height of cut
or reduce forward speed
Incorrect hydraulic oil grade, refer - Problem
‘Hydraulic Oil System Overheating’
Leaks on suction hose
Check and tighten fittings. Replace hose if
necessary
Cylinder ‘knocks’ while
rotating
High spot on cylinder or bottom blade due
to contact with foreign object
Remove high spot with a stone and back lap
to restore cutting edges. Serious damage will
require re grinding
Worn cylinder bearings
Replace as necessary
One cylinder rotates
slowly
Cutting cylinder bearing seized
Replace as necessary
Incorrect rotation motor fitted
Check motor and replace if necessary
Diverter valve only partly open
Free off and lubricate or replace diverter
valve as necessary
Motor integral check valve jammed open
Have check valve cleaned and checked
Cutting cylinder tight on the bottom blade
Readjust setting
Motor worn
Replace motor
Cutterhead fails to lift out
of work
Lift cylinder seal failure
Replace seals
Pressure relief valve jammed open or
wrongly set
Have relief valve cleaned and pressure
checked. Consult your authorised dealer
Defective control valve
Overhaul control valve
Mechanical blockage
Remove blockage
Cutterheads do not follow
ground contours
Incorrect hose routing or incorrect
orientation of hydraulic fittings
Move cutterheads throughout extremes of
movement and observe any tightness in the
hoses. Correctly route hoses and orientate
fittings as necessary
Tightness in pivots
Free off and grease as necessary
Mower operated in ‘hold’ position
Move position control lever to ‘down/float’
position
Weight transfer set too high
Reduce weight transfer
Summary of Contents for T4240
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