Changing The Hydraulic Fluid; Checking The Hydraulic Lines - Toro MB-1600 Operator's Manual

6. 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 3/4 turn.
7. Clean up any spilled fluid.
8. Start the engine and let it run for about two minutes to
purge air from the system.
9. Stop the engine and check for leaks.
10. Check the fluid level in the hydraulic tank, refer to
Checking the Hydraulic Fluid Level (page 13).
Note: Do not over fill the hydraulic tank.
11. Install the cowl and secure the latches.

Changing the Hydraulic Fluid

Service Interval: Every 200 hours
Hydraulic fluid type: Mobil 424 Hydraulic Oil or equivalent
Hydraulic fluid capacity: 28.4 liters (30 US quarts)
Note: For temperatures below 1 degree C (35 degrees F), oil
should be switched to thinner 15 weight hydraulic fluid.
1. Position the machine on a level surface.
2. Unlatch and remove the cowl (Figure 17 and Figure 18).
3. Allow the machine to cool completely.
4. Remove the hydraulic tank breather/filler cap (Figure
33).
CAUTION
The hydraulic breather/filler cap is designed
to pressurize the reservoir to 34 kPa (5 psi).
Loosen the cap slowly to avoid injury whenever
adding oil or working on the hydraulic system.
Use a wrench on the hex directly under the
cap.
g019614
Figure 33
1. Hex
2
1
2. Breather/filler cap
5. Place a large drain pan under the drain plug located at
the bottom of the hydraulic tank.
6. Remove the drain plug and allow the oil to drain into
the pan.
7. When finished, install and tighten the drain plug.
Note: Dispose of the used oil at a certified recycling
center.
8. Fill the hydraulic tank with approximately 28.4 liters
(30 US quarts) of hydraulic fluid as specified previously.
9. Start the engine and let it run for a 2 to 3 minutes.
10. Stop the engine.
11. Check the hydraulic fluid level, and add more hydraulic
fluid if necessary.
12. Install the cowl and secure the latches.

Checking the Hydraulic Lines

Service Interval: Every 40 hours—Check the hydraulic lines
for leaks, loose fittings, kinked lines,
loose mounting supports, wear, and
deterioration. (Make necessary repairs
before operating.)
Every 1,500 hours/Every 2 years (whichever comes
first)—Replace all moving hydraulic hoses.
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 pinhole
leaks or nozzles that eject high pressure
hydraulic fluid.
• Use cardboard or paper to find hydraulic leaks;
never use your hands.
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