Hydraulic System Maintenance; Replacing The Hydraulic Filter - Toro 22321 Operator's Manual

1. Drive the traction unit with the traction control
against the reference bar, noting which direction the
traction unit veers.
2. Release the traction control.
3. If the traction unit veers to the left, loosen the right
jam nut and adjust the tracking set screw on the front
of the traction control (Figure 53).
4. If the traction unit veers to the right, loosen the
left jam nut and adjust the tracking set screw on the
front of the traction control (Figure 53).
Figure 53
1. Set screw
2. Jam nut
5. Repeat steps 1 through 4 until the traction unit drives
straight in the full forward position.
Important: Ensure the tracking set screws
touch the stops in the full forward position to
avoid over stroking the hydraulic pumps.
3. Stop
Hydraulic System
Maintenance

Replacing the Hydraulic Filter

Service Interval: After the first 8 hours
Every 200 hours
Important: Do not substitute an automotive oil
filter or severe hydraulic system damage may result.
Change the hydraulic filter:
• After the first 8 operating hours
• After every 200 operating hours
1. Position traction unit on a level surface.
2. Lower the loader arms, stop the engine, and remove
the key.
3. Open the rear access cover.
4. Place a drain pan under the filter (Figure 54).
1. Hydraulic filter
5. Remove the old filter (Figure 54) and wipe the
surface of the filter adapter gasket clean.
6. Apply a thin coat hydraulic fluid to the rubber gasket
on the replacement filter.
7. Install the replacement hydraulic filter onto the filter
adapter (Figure 54). Tighten it clockwise until the
rubber gasket contacts the filter adapter, then tighten
the filter an additional 3/4 turn.
8. Clean up any spilled fluid.
9. Start the engine and let it run for about two minutes
to purge air from the system.
10. Stop the engine and check for leaks.
38
Figure 54