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Hydraulic System
Maintenance
Changing the Hydraulic Fluid
Service Interval: After the first 5 hours—Change the
hydraulic oil filter.
Every 200 hours—Change the
hydraulic oil filter.
Every 400 hours/Yearly (whichever
comes first)—Change the hydraulic
fluid.
Use a genuine Toro oil filter for replacement. Refer to
Checking the Hydraulic Fluid Level for replacement
hydraulic fluid specifications.
1. Park the machine on a level surface, lower the cutting
units, set the parking brake, and turn the engine off.
2. If only the filter is to be changed, remove the
reservoir cap and insert the reservoir plug (Figure 60)
to block the outlet. This will retain most of the fluid
in the reservoir when the filter is removed.
Figure 60
1. Reservoir plug
3. Clean the area around the hydraulic oil filter
(Figure 61). Remove the filter from the bottom of
the filter housing and allow the oil to flow into a
drain pan. Use a bottom type filter wrench. Dispose
of the oil filter properly.
2. Reservoir outlet
1. Hydraulic oil filter
4. Apply a film of oil on the filter gasket. Install the
filter by hand until the gasket contacts the mounting
head; then tighten the filter an additional 3/4 turn.
5. Fill the reservoir to the proper level; refer to
Checking the Hydraulic System Fluid.
6. Place all controls in neutral or in the disengaged
position and start the engine. Run the engine at the
lowest possible RPM to purge the system of air.
7. Run the engine until the lift cylinders extend and
retract and forward and reverse wheel motion is
achieved.
8. Stop the engine and check the oil level in the
reservoir. Add oil if necessary.
9. Check all connections and hoses for leaks.
Hydraulic fluid escaping under pressure can
penetrate skin and cause injury. Fluid injected
into the skin must be surgically removed within
a few hours by a doctor familiar with this form
of injury or gangrene may result.
• 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, never use your hands.
49
Figure 61
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