Hydraulic System Maintenance; Changing The Hydraulic Fluid - Toro 30412 Groundsmaster 4000-D Operator's Manual

Figure 67
1. Traction pedal stop
3. Loosen the jam nuts on the rod end and adjust the
traction rod length (Figure 68) so that the pedal
contacts the pedal stop when the pump lever reaches
full stroke. Secure the jam nuts.
Figure 68
1. Rod end
2. Traction rod
4. Turn the key switch to the run position without
starting the engine. Loosen the jam nut and adjust
the neutral return spring assembly shaft length until
the audible alarm begins to sound. Secure the jam
nut.
5. Turn the key switch off.
2. Stand
3. Neutral return spring
assembly
4. Jam nut
Hydraulic System
Maintenance

Changing the Hydraulic Fluid

Service Interval: After the first 200 hours
Every 800 hours
Change the hydraulic fluid after every 800 operating
hours, in normal conditions. If the fluid becomes
contaminated, contact your local Toro distributor
because the system must be flushed. Contaminated fluid
looks milky or black when compared to clean oil.
1. Turn the engine off and raise the hood.
2. Loosen the drain valve on the bottom of the
reservoir and let the hydraulic fluid flow into large
drain pan. Close the valve when the hydraulic fluid
stops draining.
3. Fill the reservoir (Figure 68) with approximately
8 U.S. gallons (30 l) of hydraulic fluid; refer to
Checking the Hydraulic Fluid.
Important: Use only the hydraulic fluids
specified. Other fluids could cause system
damage.
1. Hydraulic reservoir
4. Install the reservoir cap. Start the engine and use all
of the hydraulic controls to distribute hydraulic fluid
throughout the system. Also check for leaks; then
stop the engine.
5. Check the fluid level and add enough to raise level
the level to the Full mark on the dipstick. Do not
overfill.
48
Figure 69