Toro T4240 Operator's Manual page 42

Viscosity index, ASTM
D2270
Pour point, ASTM D97
FZG, fail stage
Water content (new fluid)
Industry Specifications:
Vickers I-286-S, Vickers M-2950-S, Denison HF-0,
Vickers 35 VQ 25 (Eaton ATS373-C)
The proper hydraulic fluids must be specified for
mobile machinery (as opposed to industrial plant
usage), multiweight-type, with ZnDTP or ZDDP
anti-wear additive package (not an ashless-type fluid).
Important:
The ISO VG 46 Multigrade fluid has
been found to offer optimal performance in a wide
range of temperature conditions. For operation
in consistently high ambient temperatures, 18°C
(65°F) to 49°C (120°F), ISO VG 68 hydraulic fluid
may offer improved performance.
Premium Biodegradable Hydraulic Fluid-Mobil
EAL EnviroSyn 46H
Important:
Mobil EAL EnviroSyn 46H is the only
synthetic biodegradable fluid approved by Toro.
This fluid is compatible with the elastomers used
in Toro hydraulic systems and is suitable for a
wide range of temperature conditions. This fluid
is compatible with conventional fluids, but for
maximum biodegradability and performance, the
hydraulic system should be thoroughly flushed
of conventional fluid. The fluid is available in 19
L (5 US gallon) containers or 208 L (55 US gallon)
drums from your Mobil distributor.
Important:
Many hydraulic fluids are almost
colorless, making it difficult to spot leaks. A red
dye additive for the hydraulic fluid is available in
20 ml (2/3 fl oz) bottles. A bottle is sufficient for
15 to 22 L (4 to 6 US gallons) of hydraulic fluid.
Order Part No. 44-2500 from your authorized Toro
distributor.
Alternative fluids:
•
Mobil EAL Envirosyn H 46 (US)
•
Mobil EAL Hydraulic Oil 46 (International)
1. Park the machine on a level surface, lower the
cutting units, engage the parking brake, shut off
the engine, and remove the key.
2. Check the sight level gauge on the side of the
tank. The level needs to be at the upper mark.
3. If hydraulic oil is needed, clean area around the
cap of hydraulic tank
from the tank.
140 or higher (high
viscosity index indicates a
multiweight fluid)
-37°C to -45°C (-34°F to
-49°F)
11 or better
500 ppm (maximum)
(Figure 46). Remove cap
1. Hydraulic-tank cap
2. Oil tank
4. Remove the cap and fill the tank to the upper
mark on the sight level gauge.
Note:
Do not overfill the hydraulic system.
5. Install the cap onto the tank.
42
Figure 46
3. Sight-level gauge
g014570