Toro 74268 Operator's Manual page 43

Replacing the Pimary Hydraulic Filter
Change the primary hydraulic filter:
After the first 250 operating hours and then yearly
after that.
Use summer filter above 32 F (0 C)
Use winter filter below 32 F (0 C)
1. Disengage the PTO, move the motion control levers to
the neutral locked position and set the parking brake.
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 drain pan under filter, remove the old filter and
wipe the filter adapter gasket surface clean (Fig. 57).
Figure 56
1. Primary hydraulic filter
4. Apply a thin coat hydro fluid to the rubber gasket on
the replacement filter (Fig. 57).
5. Install the replacement primary 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
(Fig. 57).
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
Bleeding Hydraulic System, page 44.
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.
1. Hydraulic filter
2. Gasket
Replacing the Cooling Fan Hydraulic
Filter
Replace the cooling fan hydraulic filter:
After every 500 operating hours.
After any part of the hydraulic cooling fan system is
repaired or replaced.
1. Place drain pan under filter, remove the hydraulic hose
1
from the filter (Fig. 58).
2. Remove the cooling fan hydraulic filter from the
M–4763
T–fitting on the bottom of the filter (Fig. 58).
2
m–7430
1. Cooling fan hydraulic filter
2. Back of machine
3. Install the filter to the T–fitting on the bottom and the
hydraulic hose to the top (Fig. 58).
43
1
3
2
Figure 57
3. Adapter
3
Figure 58
3. Hydraulic hose
4. T–fitting
m–1256
1
4