Servicing The Hydraulic System Fluid - Toro 04383 Greensmaster 3250-D Operator's Manual

3. If the coolant is low, remove the reserve tank cap and
add a 50/50 mixture of water and permanent ethylene
glycol antifreeze. Do not overfill.
4. Install the reserve tank cap.
Servicing the Hydraulic System
Fluid
Recommended Hydraulic Fluid
The machines reservoir is filled at the factory with
approximately 5.5 gallons (20.8 liters) 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 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 Antiwear
Hydraulic Fluid, ISO VG 46
Material Properties:
Viscosity, ASTM D445
Viscosity Index ASTM D2270 140 to 160
Pour Point, ASTM D97
Industry Specifications:
Vickers I–286–S (Quality Level), Vickers M–2950–S
(Quality Level), Denison HF–0
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.
Important Regardless of hydraulic fluid type used, any
traction unit used for mowing fairways, verticutting or used
during ambient temperatures 65°F (18°C) to 120°F (49°C)
should have Oil Cooler Kit, Part No. 104–7701, installed.
Biodegradable Hydraulic Fluid – Mobil 224H
Toro Biodegradable Hydraulic Fluid
(Available in 5 gallon pails or 55 gallon drums. See
parts catalog or Toro distributor for part numbers.)
cSt @ 40_ C 44 to 48
cSt @ 100_ C 7.9 to 8.5
–34_ F to –49_ F
22
Alternate fluid: Mobil EAL 224H
This is vegetable–oil based biodegradable oil tested and
approved by Toro for this model. This fluid is not as
resistant to to high temperatures as standard fluid, so install
an oil cooler if required by the operator manual and follow
recommended fluid change intervals with this fluid.
Contamination by mineral–based hydraulic fluids will
change the biodegradability and toxicity of this oil. When
changing from standard fluid to the biodegradable type, be
certain to follow the approved flushing procedure. Contact
your local Toro Distributor for details.
Note: Use of this fluid requires installation of an Oil Cooler
Kit, Part No. 104–7701, to the traction unit. This
biodegradable fluid will break down quickly if the
temperature exceeds 180°F (82°C).
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.
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 l) 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.
Filling the Hydraulic Tank
1. Position the machine on a level surface. Make sure the
machine has cooled down so the fluid is cold.
2. Remove the cap from the reservoir and check the level
of fluid. The fluid should be up to the bottom of the
screen in the filler neck (Fig. 28).
3. If the fluid level is low, slowly fill the reservoir with the
appropriate hydraulic fluid until the level reaches the
bottom of the screen. Do not overfill.
Important To prevent system contamination, clean the
top of the hydraulic fluid containers before puncturing.
Ensure the pour spout and funnel are clean.
4. Install the reservoir cap. Wipe up any fluid that may
have spilled.
Important Check level of hydraulic fluid before engine
is first started and daily thereafter.