WARNING
Hydraulic fluid escaping under pressure can
penetrate skin and cause injury. Fluid injected
into the skin must be surgically removed
within a few hours by a doctor familiar with
this form of injury; otherwise, gangrene may
result.
•
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; never use your hands.
11.
Check the fluid level in the hydraulic tank (refer to
Checking the Hydraulic-Fluid Level (page 17)
) and add
fluid to raise the level to mark on dipstick. Do not
overfill the tank.
12.
Close the rear-access cover.
Changing the Hydraulic Fluid
Service Interval:
Every 400 hours/Yearly (whichever comes
first)
Hydraulic Fluid Specification:
Use only 1 of the following fluids in the hydraulic system:
•
Toro Premium Transmission/Hydraulic Tractor
Fluid
(refer to your Authorized Toro Dealer for more
information)
•
Toro Premium All Season Hydraulic Fluid
(refer to
your Authorized Toro Dealer for more information)
•
If either of the above Toro fluids are not available,
you may use another
Universal Tractor Hydraulic
Fluid (UTHF
), but they must be only
conventional,
petrolium-based
products. The specifications must fall
within the listed range for all of the following material
properties and the fluid should meet the listed industry
standards. Check with your oil supplier to determine if
the oil meets these specifications.
Note:
Toro does not assume responsibility for damage
caused by improper substitutions, so use only products
from reputable manufacturers who stand behind their
recommendations.
Material Properties
cSt at 40 degrees C: 55 to 62
Viscosity, ASTM D445
cSt at 100 degrees C: 9.1 to
9.8
Viscosity index, ASTM D2270
140 to 152
Pour Point, ASTM D97
-37 to -43 degrees C (-35 to
-46 degrees F)
Industry Standards
API GL-4, AGCO Powerfluid 821 XL, Ford New Holland
FNHA-2-C-201.00, Kubota UDT, John Deere J20C, Vickers
35VQ25 and Volvo WB-101/BM.
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 (2/3 oz) bottles.
One bottle is sufficient for 15 to 22 L (4 to 6 US gallons)
of hydraulic fluid. Order part no. 44-2500 from your
Authorized Toro Dealer.
1.
Position the traction unit on a level surface.
2.
Open the hood and remove the left side screen.
3.
Install the cylinder lock, shut off the engine, and
remove the key.
4.
Allow the traction unit to cool completely.
5.
Remove the hydraulic-tank cap and dipstick (
).
Figure 60
1.
Filler-neck cap
2.
Dip stick
6.
Place a large drain pain (capable of holding 15 US
gallons) under the drain plug on the front of the
traction unit (
).
Note:
The drain plug is located behind the front
weights, under the sloped plate.
42
Summary of Contents for TX 427 22342HD
Page 49: ...Schematics g013124 Electrical Schematic Rev B 49...
Page 50: ...Hydraulic Schematic Rev A 50...
Page 51: ...Notes...
