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Hydraulic System
Maintenance
Changing the Hydraulic Oil
and Filter
Service Interval: After the first 50 hours
Every 800 hours
If the oil becomes contaminated, contact your local Toro
distributor because the system must be flushed. Contaminated
oil looks milky or black when compared to clean oil.
1. Clean the area around the filter mounting area
58). Place a drain pan under the filter and remove the
filter.
Note: If the oil is not going to be drained, disconnect
and plug the hydraulic line going to the filter.
Figure 58
1. Hydraulic-oil filter
2. Fill the replacement filter with the appropriate hydraulic
fluid, lubricate the sealing gasket, and hand turn it until
the gasket contacts the filter head. Then tighten 3/4
turn further. The filter should now be sealed.
3. Fill the hydraulic reservoir with hydraulic oil; refer to
Filling the Hydraulic Tank (page
4. Start the machine and run it at idle for 3 to 5 minutes
to circulate the fluid and remove any air trapped in
the system.
5. Stop the machine, recheck the fluid level and replenish
as required.
6. Dispose of the oil and filter properly.
(Figure
1
g014619
28).
46
Checking the Hydraulic Lines
and Hoses
WARNING
Hydraulic fluid escaping under pressure can
penetrate skin and cause injury.
• Make sure all hydraulic fluid hoses and lines are
in good condition and all hydraulic connections
and fittings are tight before applying pressure to
the hydraulic system.
• Keep your body and hands away from pin
hole leaks or nozzles that eject high pressure
hydraulic fluid.
• Use cardboard or paper to find hydraulic leaks.
• Safely relieve all pressure in the hydraulic system
before performing any work on the hydraulic
system.
• Get immediate medical help if fluid is injected
into skin.
Check the 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.
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