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Hydraulic System
Maintenance
Hydraulic System Safety
•
Seek immediate medical attention if fluid is injected
into skin. Injected fluid must be surgically removed
within a few hours by a doctor.
•
Ensure that all hydraulic-fluid hoses and lines are
in good condition and all hydraulic connections
and fittings are tight before applying pressure to
the hydraulic system.
•
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.
•
Safely relieve all pressure in the hydraulic system
before performing any work on the hydraulic
system.
Hydraulic Fluid
Specifications
Every 1,500 hours/Every 2 years (whichever
comes first)
Hydraulic Tank Capacity: 23 L (6 US gallons)
Use only 1 of the following fluids in the hydraulic
system:
•
Toro Premium Transmission/Hydraulic Tractor
Fluid (refer to your Authorized Service Dealer for
more information)
•
Toro Premium All Season Hydraulic Fluid
(refer to your Authorized Service 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, petroleum-based products. The
specifications must fall within the listed range for
all the following material properties and the fluid
should meet the listed industry standards. Check
with your hydraulic fluid supplier to determine if the
fluid meets these specifications.
Note:
Toro will not assume responsibility for
damage caused by improper substitutions, so use
only products from reputable manufacturers who
will stand behind their recommendations.
Material Properties
Viscosity, ASTM D445
cSt at 40°C: 55 to 62
cSt at 100°C: 9.1 to 9.8
Viscosity index, ASTM D2270
Pour Point, ASTM D97
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 fluid is available in 20 ml
(0.67 fl 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 Service
Dealer.
Checking the
Hydraulic-Fluid Level
Service Interval: Every 25 hours
Refer to
Hydraulic Fluid Specifications (page
1.
Park the machine on a level surface, engage
the parking brake (if applicable), and lower the
grinder.
2.
Shut off the engine and remove the key.
3.
Look into the glass bubble on the right side of
the machine. If you cannot see hydraulic fluid in
the bubble, continue this procedure to add fluid.
1. Hydraulic-fluid check bubble
4.
Remove the cover plate; refer to
Cover Plate (page
5.
Clean the area around the filler neck of the
hydraulic tank and remove the cap and filter
from the filler neck using a socket
37
140 to 152
-37 to -43°C (-35 to -46°F)
Figure 53
Removing the
21).
(Figure
37).
g007808
54).
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