Flush Hydraulic System - Toro Groundsmaster 360 Service Manual

Flush Hydraulic System

IMPORTANT: Flush the hydraulic system any time
there is a severe component failure or if the system
is contaminated (oil appears milky, black or con-
tains metal particles).
IMPORTANT: If a component failure occurred in the
traction circuit, refer to Traction Circuit (Closed
Loop) Component Failure in the General Informa-
tion section for information regarding the impor-
tance of removing contamination from the traction
circuit.
1. Make sure hydraulic oil is at normal operating tem-
perature by operating the machine for at least four (4)
hours.
WARNING
Before disconnecting or performing any work on
the hydraulic system, all pressure in the system
must be relieved. See Relieving Hydraulic System
Pressure in the General Information section.
2. Park machine on a level surface. Lower cutting deck,
stop engine and engage parking brake. Remove key
from the ignition switch.
IMPORTANT: Make sure to thoroughly clean around
all hydraulic connections that will be disassembled.
3. Drain hydraulic tank and transmission.
4. Drain hydraulic system. Drain all hoses, tubes and
components while the system is warm.
5. Remove and replace hydraulic oil filter.
6. Inspect and clean hydraulic oil tank (see Hydraulic
Tank Inspection in this section).
7. Reconnect all hydraulic hoses, lines and compo-
nents that were disconnected to drain hydraulic system
(see Hydraulic Hose and Tube Installation in the Gener-
al Information section of this chapter).
Groundsmaster 360
IMPORTANT: Use only hydraulic fluids specified in
Operator's Manual. Other fluids may cause system
damage. Use of biodegradable hydraulic fluid in
Groundsmaster 360 machines is not recommended.
8. Fill hydraulic tank with new hydraulic fluid.
9. Disconnect wire harness connector from engine fuel
stop solenoid to prevent the engine from starting. Make
sure traction pedal is in the neutral position.
10.Turn ignition key switch to START; engage starter for
ten (10) seconds to prime hydraulic pumps. Wait fifteen
(15) seconds to allow the starter motor to cool and then
repeat cranking procedure again.
11. Connect wire harness electrical connector to fuel
stop solenoid.
12.Start engine and let it run at low idle speed (1300
RPM) for a minimum of two (2) minutes. Increase engine
speed to high idle (3100 to 3150 RPM) for a minimum
of one (1) minute under no load.
13.Raise and lower cutting deck several times.
14.Turn steering wheel in both directions several times.
15.Shut off engine and check for hydraulic oil leaks.
Check oil level in hydraulic tank and add correct amount
of oil if necessary.
16.Operate the machine for two (2) hours under normal
operating conditions.
17.Check condition of hydraulic oil. If the new fluid
shows any signs of contamination, repeat steps 1
through 15 again until oil is clean.
18.When no signs of contamination are evident, resume
normal operation and follow recommended mainte-
nance intervals.
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