Bleeding The Hydraulic System; Checking The Hydraulic Hoses - Toro Z Master Professional 7000 Series Operator's Manual

Important: Do not substitute automotive oil filter
or severe hydraulic system damage may result.
3. Place drain pan under filter, remove the old filter and
wipe the filter adapter gasket surface clean (Figure 70).
Figure 70
1. Hydraulic filter
4. Remove the righthand hydraulic line that comes into
the adapter (Figure 71).
5. Allow the oil to drain out of the system into the drain
pan.
6. Install the righthand hydraulic line to the adapter
(Figure 71).
Figure 71
1. Righthand hydraulic line
2. Hydraulic filter
7. Apply a thin coat to the rubber gasket on the
replacement filter (Figure 72).
8. Install the replacement hydraulic filter onto the filter
adapter. Do not tighten.
9. Fill the hydraulic tank with hydraulic fluid until the fluid
overflows the filter and then turn the oil filter clockwise
until the rubber gasket contacts the filter adapter, then
tighten the filter an additional 1/2 turn (Figure 72).
10. Clean up any spilled fluid.
11. Add fluid to the cold level of the baffle in the hydraulic
tank.
12. Start the engine and let it run for about two minutes to
purge air from the system. Stop the engine and check
3. Hydraulic tank
for leaks. If one or both wheels will not drive, refer to
Bleeding Hydraulic System.
13. Recheck the fluid level while the fluid is warm. The
fluid should be between cold and hot.
14. If required, add fluid to the hydraulic tank. Do not
overfill.
1. Hydraulic filter
2. Gasket

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. Raise rear of the machine so wheels are off the ground
and support with jack stands.
2. Start the engine and run at low idle speed. Engage
the lever and traction on one side and spin the wheel
by hand.
3. When the wheel begins to spin on its own, keep
it engaged until wheel drives smoothly. (minimum
2 minutes)
4. Check hydraulic fluid level and add as required to
maintain proper level.
5. Repeat this procedure on the opposite wheel.

Checking the Hydraulic Hoses

Service Interval: Every 100 hours
Check the hydraulic hoses for leaks, loose fittings, kinked
lines, loose mounting supports, wear, weather and chemical
deterioration. Make necessary repairs before operating.
Note: Keep areas around the hydraulic system clean from
grass and debris build up.
49
Figure 72
3. Adapter