Toro 652D Operator's Manual page 73

1.73
TROUBLE SHOOTING
PROBLEM
One cylinder rotates
slowly.
Cutterhead fails to lift
out of work.
Cutterheads do not follow
ground contours.
TROUBLE SHOOTING
Continued.
POSSIBLE CAUSE
Cutting cylinder bearing
seized.
Incorrect rotation motor
fitted.
Diverter valve only
partly open.
Motor integral check
valve jammed open.
Cutting cylinder tight
on the bottom blade.
Motor worn.
Lift cylinder seal failure.
Pressure relief valve
jammed open or wrongly
set.
Defective control valve.
Mechanical blockage.
Incorrect hose routing or
incorrect orientation of
hydraulic fittings.
Tightness in pivots.
Mower operated in 'hold'
position.
Weight transfer set too high.
REMEDY
Replace as necessary.
Check motor and
replace if necessary.
Free off and lubricate or
replace diverter valve
as necessary.
Have check valve
cleaned and checked.
Readjust setting.
Replace motor.
Replace seals.
Have relief valve
cleaned and pressure
checked. Consult your
Toro dealer.
Overhaul control
valve.
Remove blockage.
Move cutterheads
throughout extremes
of movement and
observe any tightness
in the hoses. Correctly
route hoses and
orientate fittings as
necessary.
Free off and grease
as necessary.
Move position control
lever to 'float'
position.
Reduce weight transfer.
1.73