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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.
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.)
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.
1. Position the machine on a level surface, lower the
cutting units, and stop the engine.
2. Clean the area around the filler neck and cap of the
hydraulic tank (Fig. 15). Remove the cap.
1
Figure 15
1. Hydraulic tank cap
cSt @ 40_C 44 to 48
cSt @ 100_C 7.9 to 8.5
–34_F to –49_F
18
3. Remove the dipstick from the filler neck and wipe it
with a clean rag. Insert the dipstick into the filler neck;
then remove it and check the fluid level. The fluid level
should be within 1/4 inch (6 mm) of the mark on the
dipstick.
4. If the level is low, add the appropriate fluid to raise the
level to the full mark.
5. Install the dipstick and cap onto the filler neck.
Checking the Tire Pressure
The tires are over-inflated for shipping. Therefore, release
some of the air to reduce the pressure. The correct air
pressure in the tires is 14–18 psi (97–124 kPa).
Important
Maintain the recommended pressure in all
tires to ensure a good quality of cut and proper machine
performance.
Danger
Low tire pressure decreases machine side hill
stability. This could cause a rollover, which may
result in personal injury or death.
Do not under-inflate the tires.
Checking the Torque of the
Wheel Nuts
Warning
Failure to maintain proper torque of the wheel
nuts could result in personal injury.
Torque the wheel nuts to 45–65 ft.-lb. (61–88 NVm)
after 1–4 hours of operation and again after 10
hours of operation. Torque every 200 hours
thereafter.
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