Changing the Hydraulic Fluid and
Filter
Service Interval:
After the first 50 hours
Every 800 hours
Hydraulic Fluid Capacity:
25.7 L (6.8 US gallons)
If the fluid becomes contaminated, have your
authorized Toro distributor flush the system.
Contaminated fluid looks milky or black when
compared to clean fluid.
1.
Clean the area around the filter mounting area
(
). Place a drain pan under the filter
and remove the filter.
g014619
Figure 38
1.
Hydraulic-fluid filter
Note:
If you will not be draining the fluid,
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
Hydraulic Fluid Specifications (page 37)
and
Checking the Hydraulic-Fluid Level (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 fluid 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
pinhole 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.
Checking the Leak Detector
The leak detector system is designed to assist in early
detection of hydraulic-fluid-system leaks. If the fluid
level in the main hydraulic reservoir is lowered by
118 to 177 ml (4 to 6 oz), the float switch in the tank
will close. After a 1 second delay, the alarm sounds,
alerting the operator (
). Expansion of fluid,
due to normal heating during machine operation,
causes the fluid to transfer into the auxiliary fluid
reservoir. The fluid returns to the main tank when you
turn off the ignition switch.
39
