Bleeding The Hydraulic System - Toro 74568TE Operator's Manual

Replacing the Hydraulic Filter
Service Interval: After the first 8 hours
WARNING
Hot hydraulic fluid can cause severe burns.
Allow the hydraulic fluid to cool before performing
any maintenance to the hydraulic system.
Important: Do not substitute with an automotive oil
filter, or severe hydraulic system damage may result.
1. Disengage the PTO and set the parking brake.
2. Stop the engine and wait for all moving parts to stop
before leaving the operating position.
3. Locate the filter and place a drain pan under filter
(Figure 75).
1
2
Figure 75
1. Hydraulic tank
4. Remove the old filter and wipe the filter-adapter gasket
surface clean (Figure 76).
5. Apply a thin coat of hydraulic fluid to the rubber gasket
on the replacement filter.
6. Install the replacement hydraulic filter onto the filter
adapter.
7. Turn the oil filter clockwise until the rubber gasket
contacts the filter adapter, then tighten the filter an
additional 1/2 turn (Figure 76).
g015243
2. Hydraulic filter
1. Hydraulic filter
2. Gasket
8. Clean up any spilled fluid.
9. Check the fluid in the reservoir, and add fluid to the
tank until it reaches the cold baffle of the tank.
Important: Use the oil specified or equivalent.
Other fluids could cause system damage.
10. Start the engine and let it run for about 2 minutes to
purge air from the system.
11. Stop the engine and check for leaks.
Note: If one or both wheels will not drive, refer to
Bleeding the Hydraulic System (page 52).
12. Check the level of the fluid and add fluid, if required.
Note: Do not overfill.

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. Disengage the PTO and set the parking brake.
2. Stop the engine and wait for all moving parts to stop
before leaving the operating position.
3. Raise the rear of the machine onto jack stands high
enough to raise the drive wheels off the ground.
4. Start the engine and move the throttle control to the
idle position.
Note: If the drive wheel does not rotate, it is possible
to assist the purging of the system by carefully rotating
the tire in the forward direction.
5. Check the hydraulic fluid level as it drops, and add fluid
as required to maintain the proper level.
6. Repeat this procedure for the opposite wheel.
7. Thoroughly clean the area around each of the charge
pump housings.
52
Figure 76
3. Adapter