Bleeding The Hydraulic System; Checking The Hydraulic Hoses - Toro Z453 Z Master 74416TE Operator's Manual

2. Stop the engine, remove the key, 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. Place a drain pan under filter, remove the old
filter and wipe the filter adapter gasket surface
clean (Figure 58).
Figure 58
1. Hydraulic lter
4. Apply a thin coat to the rubber gasket on the
replacement filter (Figure 59).
5. Install the replacement hydraulic filter onto the
filter adapter. Do not tighten.
6. 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 59).
7. Clean up any spilled fluid.
8. Add fluid to the cold level of the baffle in the
hydraulic tank.
9. Start the engine and let it 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 the fluid level while the fluid is warm.
The fluid should be between cold and hot.
11. If required, add fluid to the hydraulic tank. Do
not overfill.
Figure 59
1. Hydraulic lter
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 the hydraulic fluid level and add as
required to maintain proper level.
5. Repeat this procedure on the opposite wheel.

Checking the Hydraulic Hoses

After every 100 operating 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.
44
3. Adapter