Toro 74310 Operator's Manual page 48

1. Full
WARNING
Hydraulic oil escaping under pressure can
penetrate skin and cause injury.
• If hydraulic oil 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 oil.
• 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 oil hoses and lines
are in good condition and all hydraulic
connections and fittings are tight before
applying pressure to hydraulic system.
Replacing the Hydraulic Filter
Service Interval: After the first 100 hours—Change the
hydraulic filter and reservoir hydraulic oil
when using any type of oil.
Every 250 hours—Change the hydraulic filter and
reservoir hydraulic oil when using Mobil
often in dirty or dusty conditions).
Every 500 hours—Change the hydraulic filter and
reservoir hydraulic oil when using Toro
500 hydraulic oil (more often in dirty or dusty
conditions).
Note: Use a summer filter when the temperature is 0 C
degrees (32 F degrees) and above. Use a winter filter when
the temperature is 0 C degrees (32 F degrees) and below.
1. Move the speed control lever to the neutral position
to stop the machine.
Figure 62
2. Add
® 1 oil (more
®
HYPR-OIL
2. Disengage the PTO, engage the parking brake, stop the
engine, and wait for all moving parts to stop.
3. Carefully clean the area around the filter.
Important: Ensure that no dirt or contamination
enter the hydraulic system.
4. Unscrew and remove the filter and allow the oil to
drain from the reservoir.
Note: Do not change hydraulic system oil (except
for what can be drained when changing the filter),
unless it is felt the oil has been contaminated or been
extremely hot. Changing the hydraulic oil unnecessarily
could damage the hydraulic system by introducing
contaminates into the system.
5. Before installing the new filter, fill it with Toro
™
HYPR-OIL
oil on the surface of the rubber seal.
6. Turn the filter clockwise until the rubber seal contacts
the filter adapter, then tighten the filter an additional
2/3 to 3/4 turn.
7. Fill the reservoir as stated in (page ).
8. Raise the rear of machine up and support with jack
stands (or equivalent support) just high enough to
allow drive wheels to turn freely.
9. Start the engine and move the throttle control ahead to
full throttle position.
10. Move the speed control levers to the full speed position
and run the machine for several minutes. Shut down
the machine and check the oil level.
™
48
500 hydraulic oil and apply a thin coat of
®