7.
Thread the filter onto the filter head until the
gasket contacts the mounting plate, then tighten
the filter an additional 1/2 turn.
Replacing the Return Filter
1.
Clean the area around the return filter and filter
head (
g370536
Figure 117
1.
Return-filter head
2.
Return filter
2.
Align a drain pan under the return filter, and
remove the filter.
3.
Wipe the filter mounting filter surface of the filter
head with a clean rag.
4.
Lubricate the new filter gasket, fill the filter with
the specified hydraulic fluid, and then drain the
filter; refer to
Hydraulic Fluid Specifications
(page 66)
.
5.
Thread the filter onto the filter head until the
gasket contacts the mounting plate, then tighten
the filter an additional 1/2 turn.
Purging Air from the Hydraulic
System
1.
Start the engine and let it run for about 2 minutes
to purge air from the system.
2.
Check around the filters and filter heads for
hydraulic leaks.
Note:
Repair any hydraulic leaks.
3.
Shut off the engine and remove the key.
4.
Lower the seat; refer to
Lowering the Seat (page
.
Hydraulic Fluid Capacity
28.4 L (7.5 US gallons); refer to
Specifications (page 66)
Changing the Hydraulic
Fluid
Service Interval:
Every 2,000 hours—
If you
are using the recommended
hydraulic fluid,
change the
hydraulic fluid.
Every 800 hours—
If you are not using the
recommended hydraulic fluid or have ever
filled the reservoir with an alternative fluid,
change the hydraulic fluid.
Draining the Hydraulic Fluid
If the fluid becomes contaminated, contact your local
authorized Toro distributor, because the system must
be flushed. Contaminated fluid looks milky or black
when compared to clean fluid.
Drain Pan Capacity:
30L (8 US gallons) or more
1.
Prepare the machine for maintenance; refer to
Preparing for Maintenance (page 41)
.
2.
Open the hood; refer to
Opening the Hood (page
.
3.
Align the drain pan under the hydraulic tank
(
).
g370534
Figure 118
1.
Case-return hose
2.
Straight fitting (bottom of
the hydraulic tank)
4.
Disconnect the case-return hose from the
straight fitting at the bottom of the tank, and
drain hydraulic fluid.
5.
When the hydraulic fluid stops draining,
assemble the case-return hose to the tank fitting.
6.
Torque the hose fitting to 50 to 63 N∙m (37 to
47 ft-lb).
68