Hydraulic System Maintenance; Changing The Hydraulic Fluid; Replacing The Hydraulic Filter; Checking The Hydraulic Lines And Hoses - Toro 03806 Operator's Manual

Hydraulic System
Maintenance

Changing the Hydraulic Fluid

Service Interval: Every 800 hours
Change hydraulic fluid after every 800 operating hours,
in normal conditions. If fluid becomes contaminated,
contact your local Toro distributor because the system
must be flushed. Contaminated fluid looks milky or
black when compared to clean oil.
1. Turn engine off and raise hood.
2. Remove drain plug from bottom of reservoir
(Figure 74) and let hydraulic fluid flow into drain
pan. Install and tighten plug when hydraulic fluid
stops draining.
1
Figure 74
1. Hydraulic reservoir
3. Fill reservoir with approximately 8.5 gallons of
hydraulic fluid; refer to Checking the Hydraulic Fluid.
Important: Use only hydraulic fluids specified.
Other fluids could cause system damage.
4. Install reservoir cap. Start engine and use all hydraulic
controls to distribute hydraulic fluid throughout the
system. Also check for leaks. Then stop the engine.
5. Check level of fluid and add enough to raise level to
Full mark on dipstick. Do not overfill.

Replacing the Hydraulic Filter

The hydraulic system filter head is equipped with a
service interval indicator. With the engine running, view
the indicator, it should be in the GREEN zone. When
the indicator is in the RED zone, the filter element
should be changed.
Use the Toro replacement filter (Part No. 94-2621).
Important: Use of any other filter may void the
warranty on some components.
1. Position machine on a level surface, lower the cutting
2. Clean area around filter mounting area. Place drain
1. Hydraulic filter
3. Lubricate new filter gasket and fill the filter with
G019521
4. Ensure that the filter mounting area is clean. Screw
5. Start engine and let run for about two minutes to
Checking the Hydraulic Lines
and Hoses
Service Interval: Before each use or daily
Inspect hydraulic lines and hoses daily for leaks, kinked
lines, loose mounting supports, wear, loose fittings,
weather deterioration and chemical deterioration. Make
all necessary repairs before operating.
51
units, stop the engine, engage the parking brakes and
remove key from ignition switch.
pan under filter and remove filter (Figure 75).
2
Figure 75
hydraulic fluid.
filter on until gasket contacts mounting plate. Then
tighten filter 1/2 turn.
purge air from the system. Stop the engine and
check for leaks.
1
g019482
2. Service interval indicator