Changing The Hydraulic Fluid; Replacing The Hydraulic Filters - Toro Groundsmaster 4500-D Operator's Manual

Changing the Hydraulic Fluid

Service Interval: Every 800 hours
If the fluid becomes contaminated, contact your
Toro Distributor because the system must be flushed.
Contaminated fluid looks milky or black when compared to
clean hydraulic fluid.
1. Turn the key in the ignition switch to the O
and raise the hood.
2. Disconnect the case return line from the bottom of the
reservoir and let the hydraulic fluid flow into a large
drain pan.
3. Install the hose when the hydraulic fluid stops draining.
4. Fill the reservoir with approximately 28.4 L (7.50
US gallons) of hydraulic fluid; refer to
Hydraulic-Fluid Level (page
Important: Use only the hydraulic fluids
specified. Other fluids could cause system
damage.
5. Install the reservoir cap.
6. Turn the key in the ignition switch to the O
to start the engine, use all of the hydraulic controls to
distribute hydraulic fluid throughout the system, and
check for leaks.
7. Turn the key in the ignition switch to the O
8. Check the fluid level and add enough to raise level the
level to the F mark on the dipstick. Do not overfill.
ULL
position
FF
Checking the
55).
position
N
position.
FF

Replacing the Hydraulic Filters

Service Interval: After the first 200 hours
Every 800 hours
Use Toro replacement filters Part No. 94-2621 for the rear
(mower decks) of the machine and Part No. 75-1310 for the
front (charge) of the machine.
Important: Use of any other filter may void the warranty
on some components.
1. Tilt the operators seat to access the mower
pressure filter; refer to
Compartment (page 40)
2. Replace the charge hydraulic filter at the hydraulic lift
compartment as shown in
57
Accessing the Hydraulic Lift
Figure 67
Figure 68.