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1. Hydraulic filter
4. Lubricate the gasket on the new filter.
5. Ensure that the filter mounting area is clean.
6. Screw the filter on until the gasket contacts the
mounting plate, and tighten the filter 1/2 turn.
7. Start the engine and let it run for about 2 minutes to
purge air from the system.
8. Stop the engine and check the hydraulic-oil level and
for leaks.
Changing the High-flow
Hydraulic fluid and Filter (TC
models only)
Service Interval: After the first 10 hours—Change the
high-flow hydraulic fluid filter (TC
models only).
Every 800 hours—Change the high-flow hydraulic
fluid and filter (TC models only).
Hydraulic-fluid capacity: approximately 15 L (4 US gallons)
Hydraulic-fluid type: 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, another
conventional petroleum–based fluid may be used provided
it meets the following material properties and industry
specifications. 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 cSt @ 40ºC: 44 to 48/cSt @
100ºC: 7.9 to 8.5
•
Viscosity Index, ASTM D2270—140 to 152
Figure 74
2. High-flow hydraulic filter
•
Pour Point, ASTM D97— -35ºF to -46ºF
•
FZG, Fail stage—11 or better
•
Water content (new fluid)—500 ppm (maximum)
Industry Specifications:
Vickers I-286-S, Vickers M-2950-S, Denison HF-0, Vickers
35 VQ 25 (Eaton ATS373-C)
Note: Many hydraulic fluids are almost colorless, making it
difficult to spot leaks. A red dye additive for the hydraulic
system fluid is available in 20 ml (2/3 oz.) bottles. One bottle
is sufficient for 15–22 1 (4–6 gal) of hydraulic fluid. Order
part no. 44-2500 from your authorized Toro distributor.
Note: If the fluid becomes contaminated, contact your
local Toro distributor because the system must be flushed.
Contaminated fluid may look milky or black when compared
to clean fluid. The service interval may need to be increased
if using multiple attachments as the fluid may become
contaminated quicker with the mixing of different hydraulic
fluids.
1. Clean the area around the high-flow-filter mounting
area
(Figure
74).
2. Place a drain pan under the filter and remove the filter.
Note: If the fluid is not going to be drained,
disconnect and plug the hydraulic line going to the
filter.
3. Lubricate the new filter-sealing gasket and hand turn
the filter onto the filter head until the gasket contacts
the filter head. Then tighten it 3/4 turn further. The
filter should now be sealed.
4. Fill the hydraulic reservoir with approximately 15 L (4
US gallons) of hydraulic fluid.
5. Start the machine and run it at idle for about 2 minutes
to circulate the fluid and remove any air trapped in
the system.
6. Stop the machine and check the fluid level.
7. Verify the fluid level.
8. Dispose of the fluid properly.
Raising the Cargo Box in an
Emergency
The cargo box can be raised in an emergency without starting
the engine by cranking starter or by jumping hydraulic system.
Raising the Cargo Box using the Starter
Crank the starter while holding the lift lever in the Raise
position. Run the starter for 10 seconds, then wait 60 seconds
before engaging the starter again. If the engine will not crank,
you must remove the load and box (attachment) to service
the engine or transaxle.
53
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