Changing The Hydraulic Fluid - Toro 22321 Operator's Manual

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) and add fluid to raise
the level to mark on dipstick. Do not over fill the
tank.
12. Close the rear access cover.

Changing the Hydraulic Fluid

Service Interval: Every 400 hours/Yearly (whichever
comes first)
Change the hydraulic fluid after every 400 operating
hours or yearly.
1. Position the traction unit on a level surface.
2. Open the hood.
3. Install the cylinder lock, stop the engine, and remove
the key.
4. Allow the traction unit to cool completely.
5. Remove the hydraulic tank cap and dipstick
(Figure 55).
Note: The filler cap is behind the front screen. If
you want to improve your access to it, remove the
screen.
1. Filler neck cap
6. Place a large drain pain (capable of holding 15 US
gallons) under the drain plug on the front of the
traction unit (Figure 56).
Note: The drain plug is located behind the front
weight, under the muffler.
1. Drain plug
7. Remove the drain plug and allow the oil to drain into
the pan (Figure 56).
8. When finished, install and tighten the drain plug.
Note: Dispose of the used oil at a certified recycling
center.
9. Fill the hydraulic tank with approximately 12 US
gallons (45.4 l) of 10W-30 or 15W-40 detergent,
diesel engine oil (API service CH-4 or higher); refer
to Checking Hydraulic Fluid.
10. Start the engine and let it run for a few minutes.
39
Figure 55
2. Dip stick
Figure 56