Hydraulic System Maintenance; Changing The Hydraulic Oil And Filter; Checking The Hydraulic Lines And Hoses - Toro 04357 Operator's Manual

Hydraulic System
Maintenance
Changing the Hydraulic Oil
and Filter
Change the hydraulic oil after every 800 operating hours.
If the oil becomes contaminated, contact your local
Toro distributor because the system must be flushed.
Contaminated oil looks milky or black when compared
to clean oil.
Change the filter:
• After the first 50 operating hours
• After every 800 operating hours
1. Clean the area around the filter mounting area
(Figure 59). Place a drain pan under the filter and
remove the filter.
Figure 59
1. Hydraulic filter
Note: If the oil is not going to be drained,
disconnect and plug the hydraulic line going to the
filter.
2. Fill the replacement filter with the appropriate
hydraulic fluid, lubricate the sealing gasket, and hand
turn it until the gasket contacts the filter head. Then
tighten 3/4 turn further.
3. Fill the hydraulic reservoir and small auxiliary tank
with approximately 8-1/2 gallons (32 l) of hydraulic
oil; refer to Servicing the Hydraulic System.
4. Start the machine and run it at idle for 3 to 5 minutes
to circulate the fluid and remove any air trapped in
the system. Stop the machine and recheck the fluid
level.
5. Dispose of the oil and filter properly.
Note: If the leak detector alarm sounds, turn the
key off and wait a few minutes for the oil level to
equalize in the tanks. Recheck the fluid level and add
oil, if required.
Checking the Hydraulic Lines
and Hoses
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.
Check the hydraulic lines and hoses daily for leaks, kinked
lines, loose mounting supports, wear, loose fittings,
weather deterioration, and chemical deterioration. Make
all necessary repairs before operating.
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