Hydraulic System Maintenance; Servicing The Hydraulic System - Toro 74904 Operator's Manual

Hydraulic System
Maintenance
Servicing the Hydraulic
System
Hydraulic Fluid Type: Toro
fluid or Mobil ® 1 15W-50.
Important: Use the specified fluid. Other fluids could
cause system damage.
Each Hydraulic System Fluid Capacity: 1.5 L (52 oz) per
side with filter change
Checking the Hydraulic Fluid
Service Interval: Every 50 hours—Check the hydraulic fluid
level.
1. Position the machine on a level surface.
2. Disengage the PTO, move the motion-control levers
to the N -L
EUTRAL OCK
brake.
3. Shut off the engine, remove the key, and wait for all
moving parts to stop before leaving the operating
position.
4. Allow the engine and the hydraulic system to cool for
10 minutes.
Note: The fluid level on the dipstick will be incorrect
when you check the fluid and the machine is hot.
5. Move the seat forward.
6. Clean the area around the dipsticks of hydraulic-system
reservoirs (Figure 85).
7. Remove one dipstick from the hydraulic reservoir
(Figure 85).
8. Wipe the dipstick off and thread the dipstick into the
reservoir.
9. Remove the dipstick and look at the end
Important: Do not overfill the hydraulic units
with fluid, as damage may occur. Do not run the
machine with the fluid below the add mark.
10. If the fluid level is at the A
enough fluid into the hydraulic reservoir to raise the
level to the F or H line.
ULL
11. Install the dipstick.
12. Repeat the procedure for the opposite dipstick.
® HYPR-OIL ™ 500 hydraulic
position, and set the parking
(Figure 85).
mark , slowly pour only
DD
Either dipstick will be used in the machine
1. Full
2. Add
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 your body and hands away from
pinhole 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.
• Ensure that all hydraulic-fluid hoses and
lines are in good condition, and that all
hydraulic connections and fittings are tight
before applying pressure to the hydraulic
system.
56
G015459
Figure 85
3. H —means high level
4. Dipstick locations under
seat