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Hydraulic System
Maintenance
Hydraulic System Safety
•
Seek immediate medical attention if fluid is injected
into skin. Injected fluid must be surgically removed
within a few hours by a doctor.
•
Ensure that all hydraulic-fluid hoses and lines are
in good condition and all hydraulic connections
and fittings are tight before applying pressure to
the hydraulic system.
•
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.
Hydraulic-Fluid
Specifications
Hydraulic-Fluid Type: Toro® HYPR-OIL™ 500
hydraulic fluid or Mobil® 1 15W-50
Hydraulic-Fluid Capacity: 2.3 L (2.4 US qt)
Important:
Use the specified fluid only. Other
fluids could cause system damage.
Checking the
Hydraulic-Fluid Level
Service Interval: After the first 8 hours
Every 25 hours
Note:
You can check the oil when the fluid is warm or
cold. The baffle inside the tank has 2 levels depending
on the temperature.
1.
Park the machine on a level surface, disengage
the PTO, and engage the parking brake.
2.
Shut off the engine, remove the key, and wait
for all moving parts to stop before leaving the
operating position.
3.
Clean the area around the cap and filler neck of
the hydraulic tank
(Figure
42).
1. Cap
2. Baffle
4.
Remove the cap from the filler neck. Look inside
to check if there is fluid in the reservoir
42).
5.
If there is no fluid, add fluid to the reservoir until
it reaches the cold level of the baffle.
6.
Run the machine at low idle for 15 minutes to
allow any air to purge out of the system and
warm the fluid.
7.
Check the fluid level while the fluid is warm.
If required, add fluid to the reservoir until it
reaches the hot level of the baffle.
Note:
The fluid level should be to the top of
the hot level of the baffle when the fluid is warm
(Figure
42).
8.
Install the cap on the filler neck.
Replacing the Hydraulic
Fluid and Filter
Service Interval: After the first 8 hours—Change the
hydraulic fluid and filter.
Every 250 hours—Change the hydraulic filter
and hydraulic fluid when using Mobil® 1 fluid.
Every 500 hours—Change the hydraulic filter
and the hydraulic fluid when using Toro®
HYPR-OIL™ 500 hydraulic fluid.
Important:
Do not substitute an automotive oil
filter; otherwise, severe hydraulic system damage
may result.
1.
Park the machine on a level surface, disengage
the PTO, and engage the parking brake.
2.
Shut off the engine, remove the key, and wait
for all moving parts to stop before leaving the
operating position.
3.
Remove the hydraulic-reservoir cap and
temporarily cover the opening with a plastic bag
35
Figure 42
3. Cold fluid level—full
4. Hot fluid level—full
g001045
(Figure
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