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Hydraulic System
Maintenance
Changing the Hydraulic Fluid
Change hydraulic fluid after every 800 operating hours, in
normal conditions. If the fluid becomes contaminated,
contact your Authorized Toro Distributor to flush the system.
Contaminated fluid looks milky or black when compared to
clean oil.
1. Stop the engine and raise the hood.
2. Place a large drain pan under the fitting secured to the
bottom of the hydraulic-fluid reservoir
Figure 72
1.
Hose
3. Disconnect the hose from the bottom of the fitting and
let the hydraulic fluid flow into the drain pan.
4. Install the hose when hydraulic fluid stops draining.
5. Fill the system with approximately 56.7 L (15 US
gallons) of hydraulic fluid; refer to
Hydraulic Fluid (page
Important: Use only hydraulic fluids specified.
Other fluids could cause system damage.
6. Install the reservoir cap.
7. Start the engine and use all of the hydraulic controls to
distribute hydraulic fluid throughout the system. Also
check for leaks.
8. Stop the engine.
9. Check the level of the hydraulic fluid and add enough
to raise level to the F
Important: Do not overfill the hydraulic system.
(Figure
Checking the
28).
mark on the dipstick.
ULL
Replacing the Hydraulic Filters
The hydraulic system is equipped with a service-interval
indicator
(Figure
temperature, view the indicator, it should be in the green
zone. When the indicator is in the red zone, change the
hydraulic filters.
72).
1. Hydraulic-filter-restriction indicator
Important: Use of any other filters may void the
warranty on some components.
1. Position the machine on a level surface, lower the
cutting units, stop the engine, set the parking brake,
and remove the key from the ignition switch.
2. Clean the area around the filter mounting area and place
a drain pan under the filter
1. Hydraulic filter
50
73). With the engine running at operating
Figure 73
(Figure
74) and
Figure 74
(Figure
75).
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