Hydraulic System Maintenance; Hydraulic System Safety; Servicing The Hydraulic Fluid - Toro Greensmaster 04358 Operator's Manual

Hydraulic System
Maintenance

Hydraulic System Safety

•
Ensure that all hydraulic-fluid hoses and
lines are in good condition and all hydraulic
connections and fittings are tight before
applying pressure to the hydraulic system.
•
Keep your body and hands away from pinhole
leaks or nozzles that eject high-pressure
hydraulic fluid.
•
Use cardboard or paper to find hydraulic leaks.
•
Safely relieve all pressure in the hydraulic
system before performing any work on the
hydraulic system.
•
Seek immediate medical attention if fluid
is injected into skin. Injected fluid must be
surgically removed within a few hours by a
doctor.
Servicing the Hydraulic
Fluid
Checking the Hydraulic-Fluid
Level
The hydraulic-fluid reservoir is filled at the factory with
approximately 32.2 L (8.5 US gallons) of high quality
hydraulic fluid. Check the level of the hydraulic fluid
before operating the machine each day. If the fluid
is low, add an appropriate fluid as described in the
following sections:
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 cSt @ 40° C 44 to 48
cSt @ 100° C 7.9 to 8.5
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 19 L (5
gallon) containers or 55-gallon drums from your
Mobil Distributor.
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 20 ml (0.67 oz)
bottles. One bottle is sufficient for 15 to 22 L (4 to 6
gallons) of hydraulic fluid. 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 29°C (85°F) should have Oil
Cooler Kit (Part No. 105-8339) installed.
Checking the Hydraulic-Fluid Level
1. Position the machine on a level surface.
Note:
Make sure that the machine has cooled
down so the oil is cold.
2. Check the fluid level according to the tank on
your machine:
•
If the auxiliary hydraulic tank has a sight
window, check the oil level there
and proceed to step 5.
Note:
If the oil level is between the 2 marks
on the sight window, the oil level is sufficient.
•
If the auxiliary hydraulic tank does not have
a sight window, locate the dipstick on the
38
140 to 160
-34° F to -49° F
(Figure 48),