Hydraulic System Maintenance; Hydraulic Fluid Specifications - Toro TRX-16 Operator's Manual

Adjusting the Traction-Control
Neutral Position
If the machine creeps forward or backward when
the traction control is in neutral and the machine is
warm, you may need to adjust the return-to-neutral
mechanism on the pumps; contact your Authorized
Service Dealer.
Adjusting the Traction-Control
Forward Position
If the machine does not drive straight when you hold
the traction control forward against the reference bar,
complete the following procedure:
1. Drive the machine with the traction control
against the reference bar, noting which direction
the machine veers.
2. Release the traction control.
3. If the machine veers to the left, loosen the right
jam nut and adjust the tracking set screw on the
front of the traction control
4. If the machine veers to the right, loosen the left
jam nut and adjust the tracking set screw on the
front of the traction control
Figure 55
1. Set screw
2. Jam nut
5. Repeat the procedure until the machine drives
straight in the full forward position.
Important:
Ensure that the set screws touch
the stops in the full forward position to avoid
overstroking the hydraulic pumps.
(Figure 55).
(Figure 55).
g004194
3. Stop
Hydraulic System
Maintenance
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 or gangrene may result.
• Keep your body and hands away from
pin hole leaks or nozzles that eject high
pressure hydraulic fluid.
• Use cardboard or paper to find hydraulic
leaks, never use your hands.
Hydraulic Fluid
Specifications
Every 1,500 hours/Every 2 years (whichever
comes first)—Replace all moving hydraulic
hoses.
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 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, 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
Viscosity index, ASTM D2270
Pour Point, ASTM D97
39
cSt at 40°C: 55 to 62
cSt at 100°C: 9.1 to 9.8
140 to 152
-37 to -43°C (-35 to -46°F)