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Replacing the Hydraulic Filters
Service Interval: Every 800 hours (Or more often if the
service-interval indicator is in the red
zone).
The hydraulic system is equipped with a service-interval
indicator
(Figure
70). With the engine running at operating
temperature, view the indicator, it should be in the green
zone. When the indicator is in the red zone, change the
hydraulic filters.
1. Hydraulic-filter-restriction indicator
Important: Use of any other filters may void the
warranty on some components.
1. Position the machine on a level surface, lower the
cutting units, stop the engine, engage the parking brake,
and remove the key from the ignition switch.
2. Clean the area around the filter mounting area and
place a drain pan under filter
1. Hydraulic filter
Figure 70
(Figure 71
and
Figure 71
1. Hydraulic filter
3. Remove the filter.
4. Lubricate the gasket on the new filter with hydraulic oil.
5. Ensure that the filter mounting area is clean.
6. Install the filter by hand until the gasket contacts the
mounting surface, then rotate it an additional 1/2 turn.
7. Repeat the procedure on the other filter.
8. Start the engine and let it run for about 2 minutes to
purge air from the system.
9. Stop the engine and check for leaks.
Checking the Hydraulic Lines
Figure
72).
and Hoses
Service Interval: Before each use or daily
Check hydraulic lines and hoses for leaks, kinked lines, loose
mounting supports, wear, loose fittings, weather deterioration,
and chemical deterioration. Make all necessary repairs before
operating.
47
Figure 72
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