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Hydraulic System
Maintenance
Hydraulic Fluid Specification
The machines reservoir is filled at the factory with
approximately 56 L (15 US gallons) of high quality hydraulic
fluid. Check the level of the hydraulic fluid before the
engine is first started and daily thereafter. The recommended
replacement fluid is as follows:
Toro Premium All Season Hydraulic Fluid (Available in
5-gallon pails or 55-gallon drums. See parts catalog or
Toro distributor for part numbers.)
Alternate fluids: If the Toro fluid is not available, other
fluids may be used provided they meet all the following
material properties and industry specifications. We do not
recommend the use of synthetic fluid. Consult with your
lubricant distributor to identify a satisfactory product Note:
Toro will not assume responsibility for damage caused by
improper substitutions, so use only products from reputable
manufacturers who will stand behind their recommendation.
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
Industry Specifications:
Vickers I-286-S (Quality Level), Vickers M-2950-S
(Quality Level), Denison HF-0
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 mineral oils, but for maximum
biodegradability and performance the hydraulic system
should be thoroughly flushed of conventional fluid. The
oil is available in 5-gallon (19 L) containers or 55-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 system oil is available in 20 ml (2/3 oz)
bottles. One bottle is sufficient for 15 to 22 L (4 to 6 US
gallons) of hydraulic oil. Order part no. 44-2500 from
cSt @ 40°C 44 to 48
cSt @ 100°C 7.9 to 8.5
140 to 160
-34°F to -49°F
your authorized Toro distributor. This red dye is not
recommended for use with biodegradable fluids; use
food coloring.
Servicing the Hydraulic Oil
If the oil becomes contaminated, contact an Authorized Toro
Distributor to have the system flushed.
Note: Contaminated oil looks milky or black when compared
to clean oil.
Replacing the Hydraulic Oil Filter
Service Interval: After the first 5 hours
Every 400 hours/Yearly (whichever comes first)
Use the Toro replacement filter (See your Parts Manual for the
correct part number.)
Important: Use of any other filter may void the warranty
on some components.
WARNING
Hot hydraulic fluid can cause severe burns.
Allow the hydraulic oil to cool before performing
any maintenance to the hydraulic system.
1. Position the sprayer on a level surface, set the parking
brake, stop the pump, stop the engine, and remove the
key from the starter switch.
2. Locate the 2 hydraulic filters on the machine. One
below the hydraulic oil tank and the other at the rear of
the machine on the frame.
•
Forward filter, below the hydraulic tank.
1
1. Hydraulic tank
•
Rear filter, located on the machine frame.
54
2
G013791
Figure 70
2. Forward filter
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