Hydraulic System Maintenance; Replacing The Hydraulic Filter; Changing The Hydraulic Fluid - Toro 22318 Operator's Manual

Hydraulic System
Maintenance

Replacing the Hydraulic Filter

Service Interval: After the first 8 hours
Every 400 hours
Important: Do not substitute an automotive oil filter or
severe hydraulic system damage may result.
Change the hydraulic filter after the first 8 operating hours
and then every 400 operating hours thereafter.
1. Position traction unit on a level surface.
2. Raise the loader arms and install the cylinder locks,
stop the engine, and remove the key.
3. Remove the hood.
4. Place a drain pan under the filter.
5. Remove the old filter
of the filter adapter gasket clean.
Figure 32
1. Hydraulic filter
6. Apply a thin coat hydraulic fluid to the rubber gasket
on the replacement filter
7. Install the replacement hydraulic filter onto the filter
adapter (Figure 32). Tighten it clockwise until the
rubber gasket contacts the filter adapter, then tighten
the filter an additional 1/2 turn.
8. Clean up any spilled fluid.
9. Start the engine and let it run for about two minutes to
purge air from the system.
10. Stop the engine and check for leaks.
(Figure 32) and wipe the surface
(Figure 32).
WARNING
Hydraulic fluid escaping under pressure can
penetrate skin and cause injury. Fluid injected
into the skin must be surgically removed
within a few hours by a doctor familiar with
this form of injury or gangrene may result.
• Keep your body and hands away from
pin hole leaks or nozzles that eject high
pressure hydraulic fluid.
• Use cardboard or paper to find hydraulic
leaks, never use your hands.
11. Check the fluid level in the hydraulic tank (refer to
(page )) and add fluid to raise the level to mark on
dipstick. Do not over fill the tank.
12. Install the hood.
13. Remove and store the cylinder locks and lower the
loader arms.

Changing the Hydraulic Fluid

Service Interval: Yearly
Hydraulic Fluid Specification:
Use only one of the following fluids in the hydraulic system:
•
Toro Premium Transmission/Hydraulic Tractor
Fluid (refer to your Authorized Toro Dealer for more
information)
•
Toro Premium All Season Hydraulic Fluid (refer to
your Authorized Toro Dealer for more information)
•
If neither of the above Toro fluids are available,
you may use another Universal Tractor Hydraulic
Fluid (UTHF), but they must be only conventional,
petrolium-based products. The specifications must fall
within the listed range for all of the following material
properties and the fluid should meet the listed industry
standards. Check with your oil supplier to determine if
the oil meets these specifications.
Note: Toro will not assume responsibility for damage
caused by improper substitutions, so use only products
from reputable manufacturers who will stand behind their
recommendations.
Material Properties
Viscosity, ASTM D445
Viscosity index, ASTM D2270
Pour Point, ASTM D97
29
cSt at 40 degrees C: 55 to 62
cSt at 100 degrees C: 9.1 to
9.8
140 to 152
-35 to -46 degrees F (-37 to
-43 degrees C)