Toro 04356 Operator's Manual page 43

Problem
The cutting units drop during transport
(between greens).
The cutting units drop while the
machine is stored (overnight).
One or more cutting units are slow or
there is no reel driven action. there is no reel driven action.
The reel drive pressure lines pulsate
during operation.
The leak detector alarm sounds.
Possible Causes
1. A lift cylinder is leaking internally.
2. The lift check plug seals in the #1
spool body are damaged.
3. A detent stud is loose in the #2
spool.
4. The #1 spool is loose in the valve
body and fluid is bypassing.
1. This is a normal condition.
1. The bedknife to reel adjustment is
too tight.
2. The reel bearings are tight.
3. The rear camshaft is misadjusted.
4. The poppet in a relief cartridge is
off seat.
5. An improper suction line(s) is
installed. The line collapsed.
6. A line fitting has a blockage.
7. A motor is excessively worn.
8. The #1 cutting unit has slow reel
RPM.
9. The pump is excessively worn.
10. A spool is loose in the valve body.
Fluid is leaking past the spool.
11. A steel pressure line is damaged
and flow is restricted (front cutting
units only).
12. The fluid level is low enough to
affect the total machine
performance.
1. This is a normal condition. It will
vary from line to line.
1. The system is leaking oil.
2. The fluid level is low.
3. The oil is contracting as it cools
due to prolonged idling after heavy
use.
4. The solenoid valve fails to open.
43
Corrective Action
1. Raise the units and block them up.
Remove the lines from the brazed
tube and remove the blocks. The
line that leaks fluid is attached to
the bad cylinder. Repair the
cylinder.
2. Remove the lift check plugs.
Replace the o-ring assemblies.
3. Remove the adjustment cap from
the #2 spool bonnet. Tighten the
stud with a screwdriver.
4. Replace the spool valve assembly.
1. No repair is necessary.
1. Adjust per the cutting unit
operator's manual
2. Repair as necessary.
3. Adjust the camshaft.
4. Remove and repair or replace the
relief cartridge.
5. Remove the suction line and
replace with genuine Toro parts.
6. Repair as necessary.
7. Test to verify. Repair or replace the
motor.
8. Check the lift cylinders for internal
leakage. Repair or replace the
cylinder.
9. Text to verify. Repair or replace the
pump.
10. Replace the spool valve assembly.
11. Replace the line.
12. Add fluid.
1. No repair is necessary.
1. Repair as necessary.
2. Add fluid.
3. Turn the engine off for
approximately one minute while
the main hydraulic tank is refilled
from the auxiliary tank.
4. Repair as necessary.