Toro 30581 Groundsmaster 580-D Operator's Manual page 42

Replacing the Hydraulic Filter
After 50 hours initial operation, replace the hydraulic filter
(Toro Part No. 69–1720). Replace the filter every 500 hours
of operation thereafter.
1. Place drain pan under filter and remove filter (Fig. 47).
Figure 47
1. Hydraulic oil filter
2. Coat O-ring of the replacement filter with clean
hydraulic oil before installing.
3. To tighten filter, hand turn filter element onto filter head
until element is firmly seated against the head.
4. Start engine and check for leaks. Check oil level after
engine has been stopped. Add oil, if necessary.
Inspecting the Lines and Fittings
Every 100 hours operation inspect all hoses, lines and
fittings for signs of leakage or damage (blisters, cut hoses,
etc.)
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.
Draining Water from the Hydraulic
Reservoir
Every 500 hours operation, drain water from reservoir at
three (3) locations.
1. Place drain pan under reservoir.
2. Locate plugs at right rear behind front wheel, at rear
center and front center of reservoir (Fig. 48).
Figure 48
1. Drain plug—front center
3. Open each plug approximately one turn. Allow fluid to
drain until only hydraulic oil is draining and tighten
plug.
4. Check hydraulic oil level. Add oil, as necessary.
Draining the Hydraulic Reservoir
Every 1000 hours operation, or yearly, drain and replace
hydraulic fluid in reservoir. Total system capacity is
approximately 40 gal. (151 l); reservoir capacity is
approximately 32 gal. (121 l).
Note: If oil becomes contaminated (oil appears milky or
black), the system must be flushed. Contact your local Toro
distributor for assistance.
1. Place drain pan under reservoir. In turn, remove all 3
drain plugs and let oil drain into pan (Fig. 48).
2. Inspect O-rings on plugs and replace, if damaged.
Install drain plugs.
3. With machine on level surface, fill reservoir with
hydraulic oil until oil level is midway up in sight glass
(Fig. 46).
4. Install reservoir cap. Start engine and use all hydraulic
controls to distribute oil throughout the system. Check
for leaks. If repairs are needed, shut engine off before
beginning.
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2. Hydraulic reservoir