Toro Groundsmaster 4300-D, Руководство оператора

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Checking the Hydraulic
Lines and Hoses
Service Interval: Before each use or daily
Every 2 years—Replace the hydraulic hoses.
Make all necessary repairs before operating.
WARNING
Hydraulic fluid escaping under pressure can
penetrate skin and cause injury.
• Seek immediate medical help if fluid is
injected into skin.
• Make sure that all hydraulic-fluid hoses
and lines are in good condition and all
hydraulic connections and fittings are tight
before applying pressure to the hydraulic
system.
• Keep your body and hands away from
pinhole leaks or nozzles that eject
high-pressure hydraulic fluid.
• Use cardboard or paper to find hydraulic
leaks.
• Safely relieve all pressure in the hydraulic
system before performing any work on the
hydraulic system.
Testing the
Hydraulic-System Pressure
Use the hydraulic system test ports to test the
pressure in the hydraulic circuits. Contact your
authorized Toro distributor for assistance.
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 Function
PRV2 Front mower circuit
PRV1 Rear mower circuit
PRV Lift/lower cutting decks
S1 Lower cutting decks
S2 Lower cutting decks
Cutting Unit Maintenance
Separating the Cutting Unit
from the Traction Unit
1. Position the machine on a level surface, lower
the cutting units to the floor, turn the key in the
switch to the O
FF
position, and engage the
parking brake.
2. Disconnect and remove the hydraulic motor
from the cutting unit (
Figure 97 ). Cover the top
of the spindle to prevent contamination.
g011351
Figure 97
1. Motor-mounting screws
3. Remove the lynch pin securing the deck-carrier
frame to the lift-arm pivot pin (
Figure 98 ).
g031691
Figure 98
1. Lynch pin 2. Lift-arm pivot pin
4. Roll the cutting unit away from the traction unit.
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