Checking The Hydraulic Fluid Level - Toro 04357 Operator's Manual

Checking the Hydraulic Fluid
Level
The hydraulic fluid reservoir is filled at the factory with
approximately 8.5 U.S. gallons (32.2 l) 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, 65° F (18°
C) to 120° F (49° C), 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.
cSt @ 40°C 44 to 48
cSt @ 100°C 7.9 to 8.5
140 to 160
-34°F to -49°F
Note: Many hydraulic fluids are almost colorless,
making it difficult to spot leaks. A red dye additive
for the hydraulic system oil is available in 2/3 oz. (20
ml) bottles. One bottle is sufficient for 4-6 gal (15-22
1) of hydraulic oil. Order part no. 44-2500 from your
authorized Toro distributor. This red dye is not
recommended for use with biodegradable fluids.
Use food coloring.
Important: Regardless of the hydraulic fluid
type used, any traction unit used for off green
applications, verticutting or used during ambient
temperatures above 85° F (29° C) should have Oil
Cooler Kit, Part No. 105-8339, installed.
1. Position the machine on a level surface. Make sure
the machine has cooled down so the oil is cold.
Check the oil level by viewing the sight gauge on
the side of the auxiliary oil tank (Figure 26). If the
oil level is up to the Full mark next to the gauge,
the oil level is sufficient.
2. If the oil level is below the Full mark on the auxiliary
tank, remove the cap from the hydraulic oil tank and
slowly fill the tank with the appropriate high quality
hydraulic fluid until the level is up to the mark next
to the sight gauge. Do not mix oils. Install the cap.
Important: To prevent system contamination,
clean the top of the hydraulic oil containers
before puncturing them. Ensure that the pour
spout and funnel are clean.
Note: Make a close visual inspection of the
hydraulic components. Inspect them for leaks, loose
fasteners, missing parts, improperly routed lines, etc.
Make any corrections necessary.
1. Sight gauge
2. Hydraulic tank cap
21
Figure 26
3. Auxiliary tank breather