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 oil.
1. Park the machine on a level surface, engage the
parking brake, lower the mower decks, shut off
the engine, and remove the key.
2. Raise the hood.
3. Disconnect the case return line from the bottom
of the reservoir and let the hydraulic fluid flow
into a large drain pan.
4. Install the hose when the hydraulic fluid stops
draining.
5. Fill the reservoir with hydraulic fluid; refer to
Checking the Hydraulic-Fluid Level (page
Important:
Use only the hydraulic fluids
specified. Other fluids could cause system
damage.
6. Install the reservoir cap.
7. Turn the key in the key switch to the O
to start the engine. Use all the hydraulic controls
to distribute hydraulic fluid throughout the
system, and check for leaks.
8. Turn the key in the key switch to the O
position.
9. Check the fluid level and add enough to raise
level the level to the F
Do not overfill.
73).
position
N
FF
mark on the dipstick.
ULL
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 operator's seat to access the mower
pressure filter; refer to
Lift Compartment (page 55)
2. Replace the charge hydraulic filter at the
hydraulic lift compartment as shown in
118.
75
Accessing the Hydraulic
Figure 117
g201858
Figure