Changing The Hydraulic Fluid And Filters - Toro Groundsmaster 5900 Operator's Manual

High-Viscosity Index/Low-Pour Point
Anti-Wear Hydraulic Fluid, ISO VG 46
Material Properties:
Viscosity, ASTM D445
Viscosity Index ASTM
D2270
Pour Point, ASTM D97
FZG, Fail stage
Water content (new fluid)
Industry Specifications:
Important:
The ISO VG 46 multigrade fluid
offers optimal performance in a wide range
of temperature conditions. For operation in
consistently high ambient temperatures, 65°F
(18°C) to 120°F (49°C), ISO VG 68 hydraulic fluid
may offer improved performance.
Important:
Many hydraulic fluids are almost
colorless, making it difficult to spot leaks. A
red dye additive for the hydraulic-system oil is
available in 20 ml (2/3 fl oz) bottles. 1 bottle is
sufficient for 15 to 22 L (4 to 6 US gallons) of
hydraulic oil. Order Toro Part No. 44-2500 from
your authorized Toro distributor.
1. Perform the pre-maintenance procedure; refer
to Pre-Maintenance Safety (page
2. On the right side of the machine, raise the
access cover to expose the hydraulic-tank cap
(Figure 133).
Figure 133
1. Hydraulic-tank cap
3. Clean the area around the filler neck and cap of
the hydraulic tank
4. Remove the cap from the filler neck.
St @ 40°C 42 to 50
St @ 100°C 7.6 to 8.5
140 or higher
-40°F to -49°F
11 or better
500 ppm (maximum)
Vickers I-286-S (Quality Level),
Vickers M-2950-S (Quality
Level), Denison HF-0
64).
(Figure 133).
5. Remove the dipstick from the filler neck and
wipe it with a clean rag. Insert the dipstick into
the filler neck, then remove it and check the fluid
level (Figure
Note:
The fluid level should be within the safe
operating range on the dipstick.
1. Safe operating range
6. If the level is low, add the appropriate fluid to
raise the level to the upper mark.
7. Install the dipstick and cap onto the filler neck.
8. Close the cover.
Changing the Hydraulic
Fluid and Filters
Service Interval: Every 1,000 hours
If the hydraulic 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.
Use Toro replacement filters (Part No. 86-6110 for the
left side of the machine and Part No. 75-1310 for the
right side of the machine).
Important:
Using any other filter may void the
warranty on some components.
1. Position the machine on a level surface, lower
the cutting units, shut off the engine, engage the
parking brakes, and remove the ignition key.
g031318
2. Place a large drain pan under the hydraulic-fluid
tank.
3. Remove the hydraulic reservoir cap and dipstick.
4. Remove the drain plug from the bottom of the
tank and let the hydraulic fluid flow into the pan
(Figure 135).
87
134).
Figure 134
g009240