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Hydraulic System
Maintenance
Servicing the Hydraulic
System
Checking the Hydraulic Fluid
Service Interval: After the first 8 hours
Every 25 hours
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 58).
Figure 58
1. Cap
2. Baffle
5. Remove cap from filler neck. Look inside to check
the fluid level in the reservoir. (Figure 58).
6. 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 58).
9. Install cap on filler neck.
3. Cold fluid level-full
4. Hot fluid level-full
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 and
Hydraulic Oil
Service Interval: After the first 8 hours
Every 250 hours—Change the
hydraulic filter and hydraulic oil when
using Mobil
Every 500 hours—Change the
hydraulic filter and hydraulic oil
when using Toro
hydraulic oil.
WARNING
Hot hydraulic fluid can cause severe burns.
Allow the hydraulic fluid to cool before performing
any maintenance to the hydraulic system.
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. Locate the filter under the fuel tank and place drain
pan under filter (Figure 59).
42
®
1 oil.
®
HYPR-OIL
™
500
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