Hydraulic System Maintenance; Hydraulic System Safety; Checking The Hydraulic System - Toro Groundsmaster 3500-D Operator's Manual

Hydraulic System
Maintenance
The reservoir is filled at the factory with approximately
13.2 L (3.5 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 Toro Premium All-Season
Hydraulic Fluid (Available in 19 L (5 US gallons) pails
or 55-gallon drums. See the parts catalog or an
authorized Toro distributor for part numbers.)
Alternate fluids: If the Toro fluid is not available,
you may use other fluids provided they meet all
the following material properties and industry
specifications. Do not use 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 19 L (5
US gallons) 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 (0.67 oz) bottles. One bottle
cSt @ 40° C 44 to 48
cSt @ 100° C 7.9 to 8.5
140 to 160
-34° F to -49° F
is sufficient for 15 to 22 L (4 to 6 US gallons) of
hydraulic oil. Order Part No. 44-2500 from your
authorized Toro distributor.

Hydraulic System Safety

•
Seek immediate medical attention if fluid is injected
into skin. Injected fluid must be surgically removed
within a few hours by a doctor.
•
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.
Checking the Hydraulic
System
Service Interval: Before each use or daily—Check
the hydraulic-fluid level.
1. Perform the pre-maintenance procedure; refer
to Preparing the Machine for Maintenance (page
35).
2. Clean the area around the filler neck and
hydraulic-tank cap
1. Hydraulic-tank cap
3. Remove the hydraulic-tank cap
4. Remove the dipstick from the filler neck and
wipe it with a clean rag.
51
(Figure 63).
Figure 63
(Figure
g031641
63).