Hydraulic System Maintenance; Replacing The Hydraulic Filter; Changing The Hydraulic Fluid - Toro 22337CP 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 front access cover.
4. Place a drain pan under the filter.
5. Remove the old filter (Figure 37) and wipe the
surface of the filter adapter gasket clean.
Figure 37
1. Hydraulic filter
6. Apply a thin coat hydraulic fluid to the rubber gasket
on the replacement filter (Figure 37).
7. Install the replacement hydraulic filter onto the filter
adapter (Figure 37). 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.
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
Checking the Hydraulic Fluid Level (page 20)) and
add fluid to raise the level to mark on dipstick. Do
not over fill the tank.
12. Install the front access cover.
13. Remove and store the cylinder locks and lower the
loader arms.

Changing the Hydraulic Fluid

Service Interval: Yearly
Change the hydraulic fluid yearly.
1. Position the traction unit on a level surface.
2. Raise the loader arms and install the cylinder locks.
3. Stop the engine and remove the key.
4. Remove the front access cover.
5. Place a large drain pan under the traction unit that
can hold at least 15 US gallons (56 l).
6. Remove the drain plug from the bottom of the
hydraulic tank and allow the fluid to completely
drain out.
7. Install the drain plug.
8. Fill the hydraulic tank with approximately 15 US
gallons (56 L) of 10W-30 or 15W-40 detergent, diesel
engine oil (API service CH-4 or higher); refer to
Checking the Hydraulic Fluid Level (page 20).
Note: Dispose of used oil at a certified recycling
center.
9. Install the front access cover.
10. Remove and store the cylinder locks and lower the
loader arms.
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