Bleeding The Hydraulic System - Toro GrandStand 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.
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.
Important: Do not substitute automotive oil
filter or severe hydraulic system damage may
result.
3. Locate the filter and place drain pan under filter
(Figure 74).
1
2
Figure 74
1. Hydraulic tank
4. Remove the old filter and wipe the filter adapter
gasket surface clean (Figure 75).
5. Apply a thin coat hydraulic fluid to the rubber gasket
on the replacement filter.
6. Install replacement hydraulic filter onto the filter
adapter. Turn the oil filter clockwise until the rubber
gasket contacts the filter adapter, then tighten the
filter an additional 1/2 turn (Figure 75).
g015243
2. Hydraulic filter
1. Hydraulic filter
2. Gasket
7. Clean up any spilled fluid.
8. Check the fluid in the reservoir, add fluid to the tank
until it reaches the cold baffle of the tank.
Important: Use oil specified or equivalent.
Other fluids could cause system damage.
9. Start engine and let run for about two minutes to
purge air from the system. Stop the engine and
check for leaks. If one or both wheels will not drive,
refer to Bleeding Hydraulic System.
10. Recheck level and add fluid, if required. 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 up onto jack stands
high enough to raise the drive wheels off the ground.
4. Start the engine and move the throttle control to idle
position.
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 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 75
3. Adapter