Hydraulic System
Maintenance
Servicing the Hydraulic Fluid
The hydraulic reservoir is filled at the factory with
approximately 170 L (45 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 as follows:
Toro Premium All Season Hydraulic Fluid
(Available in
5 gallon pails or 55 gallon drums. Contact your Authorized
Toro Dealer 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 dealer 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:
42.2 cSt at 40° C (104° F)
Viscosity, ASTM D445
7.8 cSt at 100° C (212° F)
Viscosity Index ASTM
D2270
158
Pour Point, ASTM D97
-6° C (-42° F)
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 20 mL (2/3 oz) bottles. One bottle is
sufficient for 15-22 L (4-6 gal) of hydraulic oil. Order
part
no. 505-150
from your Authorized Toro Dealer.
Note:
If ambient operating temperatures exceed 43° C (110°
F), contact Toro for fluid recommendations.
Checking the Hydraulic Fluid
Service Interval:
Before each use or daily
Check the hydraulic fluid as follows:
1.
Park the machine on a level surface, stop the engine,
and remove the ignition key.
2.
Open the rear-access door.
3.
Look at the sight gauge on the hydraulic tank and check
the level of the oil (
).
Figure 149
1.
Full oil level
2.
Low oil level
4.
If the level is low, open the hydraulic-tank cap (
), and add the appropriate fluid until it reaches Full
on the sight gauge.
Figure 150
1.
Hydraulic-tank cap
5.
Install cap onto the filler neck.
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