Hydraulic System Maintenance; Changing The Hydraulic Fluid And Filter; Checking The Hydraulic Lines And Hoses - Toro Greensmaster TriFlex 3420 Operator's Manual

Hydraulic System
Maintenance
Changing the Hydraulic
Fluid and Filter
Service Interval: After the first 50 hours
Every 800 hours
If the oil becomes contaminated, have your Toro
distributor flush the system. Contaminated oil looks
milky or black when compared to clean oil.
1. Clean the area around the filter mounting area
(Figure 50). Place a drain pan under the filter
and remove the filter.
Figure 50
1. Hydraulic-oil filter
Note:
If you will not be draining the oil,
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 it 3/4 turn further.
3. Fill the hydraulic reservoir with hydraulic fluid;
refer to Filling the Hydraulic Tank (page
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. Shut off the engine and
check the fluid level.
5. Dispose of the oil and filter properly.
Checking the Hydraulic
Lines and Hoses
WARNING
Hydraulic fluid escaping under pressure can
penetrate skin and cause injury.
• Ensure that 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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