Hydraulic Valve Solenoid Functions; Selecting A Blade - Toro 30853 Operator's Manual

CAUTION
If safety interlock switches are disconnected or
damaged the machine could operate unexpectedly
causing personal injury.
• Do not tamper with the interlock switches.
• Check the operation of the interlock switches
daily and replace any damaged switches before
operating the machine.
Verifying the Interlock Switch Function
1. Park the machine on a level surface, lower the cutting
units, stop the engine, and engage the parking brake.
2. Turn the key switch to the On position, but do not
start the machine.
3. Locate the appropriate switch function in the
diagnostics menu on the InfoCenter.
4. Individually, change each of the switches from open to
closed (i.e., sit on seat, engage traction pedal, etc.), and
note that the appropriate state of the switch changes.
Repeat this for all switches that you can change by
hand.
5. If a switch is closed and the appropriate indicator does
not change, check all wiring and connections to the
switch and/or check the switches with an ohm meter.
Replace any defective switches and repair any defective
wiring.
Note: The InfoCenter display also has the ability to detect
which output solenoids or relays are turned on. This is a
quick way to determine if a machine malfunction is electrical
or hydraulic.
Verifying Output Function
1. Park the machine on a level surface, lower the cutting
units, stop the engine, and engage the parking brake.
2. Turn the key switch to the On position and start the
machine.
3. Locate the appropriate output function in the
diagnostics menu on the InfoCenter.
4. Sit on the seat and attempt to operate the desired
function of the machine. The appropriate outputs
should change state to indicate that the ECM is turning
on that function.
Note: If the correct outputs do not illuminate, verify that the
required input switches are in the necessary positions to allow
that function to occur. Verify correct switch function.
If the output displays are on as specified, but the machine
does not function properly, this indicates a non-electrical
problem. Repair as necessary.
Hydraulic Valve Solenoid
Functions
Use the list below to identify and describe the different
functions of the solenoids in the hydraulic manifold. Each
solenoid must be energized to allow function to occur.
Solenoid
PRV2 Front mower circuit
PRV1 Rear mower circuit
PRV Lift/lower cutting decks
S1 Lower cutting decks
S2 Lower cutting decks

Selecting a Blade

Standard Combination Sail
This blade was designed to provide excellent lift and
dispersion in almost any condition. If more or less lift and
discharge velocity is required, consider a different blade.
Attributes: Excellent lift and dispersion in most conditions.
Angled Sail
The blade generally performs best in lower heights of cut -
1.9 to 6.4 cm (3/4 to 2–1/2 inch).
Attributes:
•
Discharge remains more even at lower heights of cut.
•
Discharge has less tendency to throw left and thus a
cleaner look around bunkers and fairways.
•
Lower power requirement at lower heights and dense turf.
High Lift Parallel Sail
The blade generally performs better in the higher heights of
cut - 7 to 10 cm (2 to 4 inch).
Attributes:
•
More lift and higher discharge velocity.
•
Sparse or limp turf is picked up significantly at higher
heights of cut.
•
Wet or sticky clippings are discharged more efficiently
reducing congestion in the deck.
•
Requires more horsepower to run.
•
Tends to discharge further left and can tend to windrow
at lower heights of cut.
WARNING
Do not use the high lift blade with the mulching
baffle. The blade could break, resulting in personal
injury or death.
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Function