Figure 77
1.
Hydraulic filter
3.
Adapter
2.
Gasket
Replacing the Cooling Fan Hydraulic
Filter
Service Interval:
Every 500 hours or after any part of
the hydraulic cooling fan system is
repaired or replaced.
1. Place drain pan under filter, remove the hydraulic
hose from the filter (Figure 78).
2. Remove the cooling fan hydraulic filter from the
T-fitting on the bottom of the filter (Figure 78).
Figure 78
1.
Cooling fan hydraulic filter
3.
Hydraulic hose
2.
Back of machine
4.
T-fitting
3. Install the filter to the T-fitting on the bottom and
the hydraulic hose to the top (Figure 78).
Bleeding the Hydraulic System
The traction system is self bleeding, however, it may be
necessary to bleed the system if fluid is changed or after
work is performed on the system.
1. Raise rear of the machine so wheels are off the
ground and support with jack stands.
2. Start the engine and run at low idle speed. Engage
the lever and traction on one side and spin the wheel
by hand.
3. When the wheel begins to spin on its own, keep it
engaged until wheel drives smoothly. (minimum
2 minutes)
4. Check hydraulic fluid level and add as required to
maintain proper level.
5. Repeat this procedure on the opposite wheel.
Checking the Hydraulic Hoses
Service Interval:
Every 100 hours
Check the hydraulic hoses for leaks, loose fittings,
kinked lines, loose mounting supports, wear, weather
and chemical deterioration. Make necessary repairs
before operating.
Note:
Keep areas around the hydraulic system clean
from grass and debris build up.
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.
Setting the Hydraulic Pump
Neutral Position
Note:
Adjust the handle neutral first. That needs to be
correct before the following adjustment can be made.
53
