Toro 78922 Operator's Manual page 54

Replacing the Hydraulic Filters and
Hydraulic Oil
Service Interval: Every 250 hours—Change the
hydraulic filters and hydraulic oil
when using Mobil
Every 500 hours—Change the
hydraulic filters and hydraulic oil
when using Toro
hydraulic oil.
To replace the hydraulic oil, the filters need to be
removed. Replace both at the same time. Refer to the oil
specifications under Servicing the Hydraulic System for
the correct oil.
1. Disengage the blade control switch (PTO), move the
motion control levers to the neutral locked position
and set the parking brake.
2. Stop the engine, remove the key, and wait for all
moving parts to stop before leaving the operating
position.
3. Raise the machine and support it with jack stands
(Figure 85).
Figure 85
1. Jack stands
4. Remove both the mower belt and the pump drive
belt. This will prevent oil getting on the belts. Refer
to Belts in the Maintenance Section.
5. Place a drain pan under the filter, remove the old
filter and wipe the surface clean (Figure 86).
®
1 oil.
® ™
HYPR-OIL 500
54
Figure 86
Bottom View of Machine
1. Filter locations
6. Apply a thin coat of hydraulic oil to the rubber
gasket on the replacement filter (Figure 86).
7. Install the replacement hydraulic filter.
8. Install the pump drive belt and the mower belt.
9. Remove the jack stands and lower the machine
(Figure 85).
10. Add oil to the hydraulic reservoir and check for any
leaks.
11. Clean up any spilled oil.
12. Start the engine and let it run for about two minutes
to purge air from the system. Stop the engine and
check for leaks.
13. Check the oil level while the oil is cold.
14. If required, add oil to the hydraulic reservoir. Do
not overfill.
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G008968
2. Hydraulic filter