Hydraulic System
Maintenance
Servicing the Hydraulic
System
Checking the Hydraulic Fluid
Service Interval:
After the first 8 hours
Every 25 hours
Hydraulic Oil Type:
Toro® HYPR-OIL™ 500 hydraulic
oil or Mobil® 1 15W-50
Hydraulic System Oil Capacity:
77 oz. (2.3 l)
Important:
Use oil specified. Other fluids could cause
system damage.
Note:
There are two ways of checking the hydraulic oil.
One is when the oil is warm and one is when the oil is cold.
The baffle inside the tank has two levels depending if the oil
is warm or cold.
1.
Position machine on a level surface.
2.
Disengage the power take off (PTO) and shut off the
engine.
3.
Wait for all moving parts to stop before leaving the
operating position and then set the parking brake.
4.
Clean area around cap and filler neck of hydraulic tank
(Figure 60).
Figure 60
1.
Cap
3.
Cold fluid level-full
2.
Baffle
4.
Hot fluid level-full
5.
Remove cap from filler neck. Look inside to check if
there is fluid in the reservoir. (Figure 60).
6.
If there is no fluid, add fluid to the reservoir until it
reaches the cold level of the baffle.
7.
Run the machine at low idle for 15 minutes to allow any
air to purge out of the system and warm fluid. Refer to
Starting and Stopping the Engine.
8.
Recheck the fluid level while the fluid is warm. If
required, add fluid to the reservoir until it reaches the
hot level of the baffle.
Note:
The fluid level should be to the top of the hot
level of the baffle, when the fluid is warm (Figure 60).
9.
Install cap on filler neck.
WARNING
Hydraulic fluid escaping under pressure can
penetrate skin and cause injury.
•
If hydraulic fluid is injected into the skin it
must be surgically removed within a few
hours by a doctor familiar with this type
of injury. Gangrene may result if this is
not done.
•
Keep 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.
•
Make sure all hydraulic fluid hoses and
lines are in good condition and all hydraulic
connections and fittings are tight before
applying pressure to hydraulic system.
Replacing the Hydraulic Filter
Service Interval:
After the first 8 hours
Every 200 hours
1.
Disengage the PTO and set the parking brake.
2.
Stop the engine and wait for all moving parts to stop
before leaving the operating position.
Important:
Do not substitute automotive oil filter
or severe hydraulic system damage may result.
3.
Remove hydraulic reservoir cap and temporarily cover
opening with a plastic bag and rubber band to prevent
all hydro fluid from draining out.
4.
Locate filter under engine base and place drain pan
under filter (Figure 61).
5.
Remove the old filter and wipe the filter adapter gasket
surface clean (Figure 61).
41
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