Hydraulic System Maintenance; Servicing The Hydraulic System - Toro 74534 Operator's Manual

Hydraulic System
Maintenance
Servicing the Hydraulic
System
Hydraulic Oil Type: Toro
®
or Mobil 1 15W-50 synthetic motor oil.
Hydraulic System Oil Capacity: 2.0 L (67 oz)
Important: Use the specified oil or equivalent. Other
fluids could cause system damage.
Checking the Hydraulic Fluid
Service Interval: After the first 8 hours
Every 50 hours
Note: There are 2 ways to check the hydraulic oil; when the
oil is warm, or when the oil is cold. The baffle inside the tank
has 2 levels depending if the oil is warm or cold.
1. Position the machine on a level surface.
2. Disengage the power take off (PTO) and shut off the
engine.
3. Wait for all moving parts to stop before leaving the
operating position and then set the parking brake.
4. Clean the area around the cap and the filler neck of the
hydraulic tank (Figure
4
Figure 71
1. Cap
2. Baffle
5. Remove the cap from the filler neck
Note: Look inside to check the fluid level in the
reservoir.
6. Add fluid to the reservoir until it reaches the cold level
of the baffle.
7. Run the machine at low idle for 15 minutes to allow
any air to purge out of the system and warm the fluid;
refer to Starting the Engine (page
® ™
HYPR-OIL 500 hydraulic oil
71).
1 3
2
G012005
3. Cold fluid level—full
4. Hot fluid level—full
(Figure 71).
17).
8. Check the fluid level while the fluid is warm.
Note: If required, add fluid to the reservoir until it is
between the hot level and the cold level.
Note: The fluid level should be below the hot level of
the baffle when the fluid is warm
9. Install the cap on the filler neck.
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.
• Make sure all hydraulic-fluid hoses are in
good condition, and all that the hydraulic
connections and fittings are tight before
applying pressure to hydraulic system.
Replacing the Hydraulic Fluid
Service Interval: Every 250 hours—Change the hydraulic
oil when using Mobil
Every 500 hours—Change the hydraulic oil when
®
using Toro HYPR-OIL
WARNING
Hot hydraulic fluid can cause severe burns.
Allow the hydraulic fluid to cool before performing
any maintenance to the hydraulic system.
1. Disengage the PTO and set the parking brake.
2. Stop the engine and wait for all moving parts to stop
before leaving the operating position.
3. Remove hydraulic-reservoir cap.
4. Locate the front hydraulic hose under the hydraulic
tank and place a drain pan under the tank
5. Loosen the hose clamp and move it down the hose.
6. Remove the front hydraulic hose and allow the fluid to
run out of the tank.
49
(Figure 71).
®
1 oil.
™
500 hydraulic oil.
(Figure 72).