Bleeding The Hydraulic System - Toro GrandStand 74534TE Operator's Manual

Figure 77
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.
3. Adapter
Checking the Hydraulic Lines
Service Interval: Every 100 hours
Check hydraulic hoses and hoses for leaks, loose fittings,
kinked hoses, loose mounting supports, wear, weather
and chemical deterioration. Make necessary repairs
before operating.
Note: Keep areas around 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 hoses are
in good condition and all hydraulic connections
and fittings are tight before applying pressure to
hydraulic system.
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