Toro Greens Aerator, Service Manual

Page: 57 / 130

Removal (Fig. 22)
1. Park the machine on a level surface, fully raise the
coring head and stop the engine. Remove the key from
the ignition switch.
2. Raise lock–up brackets on each side of machine and
lower coring head until it rests on brackets.
CAUTION
Operate hydraulic lift control to relieve system
draulic oil.
pressure and avoid injury from pressurized hy-
3. Move lift lever to both raise and lower to make sure
that hydraulic system pressure is relieved.
4. Remove control cover from machine (Fig. 23).
5. Disconnect hydraulic hoses (items 15 and 21) from
90
o
hydraulic fittings (item 18) on lift control valve. Allow
hoses to drain into a suitable container. Discard o–rings.
6. Tag hydraulic hoses attached to straight fittings in lift
control valve ports A and B. Disconnect hoses and allow
them to drain into a suitable container. Discard o–rings.
7. Remove connecting link assembly (item 8) that at-
taches lift valve handle to lift control.
8. Remove four (4) hex nuts (item 10), lock washers
(item 9) and cap screws (item 2) that secure control
valve to control panel.
9. Remove control valve from the machine.
10.If necessary, remove hydraulic fittings from control
valve. Discard o–rings.
Installation (Fig. 22)
1. If fittings were removed from control valve, lightly lu-
bricate new o–rings with clean 10W30 engine oil and
install fittings to control valve.
2. Position control valve (1) to machine and secure with
four (4) cap screws (item 2), lock washers (item 9) and
hex nuts (item 10).
3. Attach lift valve handle to lift control with connecting
link assembly (item 8).
4. Lightly lubricate new o–rings with clean 10W30 engi-
ne oil and correctly connect hydraulic hoses to fittings on
lift control valve.
5. Check oil level in hydraulic reservoir and fill if neces-
sary. Check hydraulic components for leaks and tighten
any loose connections.
6. Install control cover (Fig. 23).
7. Raise coring head and raise lock–up brackets on
each side of machine.
1
Figure 23
1. Control cover
Hydraulic
System
Greens Aerator Page 4 – 27 Hydraulic System