Hydraulic System Maintenance; Hydraulic System Safety; Checking The Hydraulic System - Toro 31230 Operator's Manual

6. With the seat in the raised position, verify that you
are not overloading the linkage by ensuring that the
transmission does not move when you press the pedal
to the stop.
7. Adjust the stop bolt out (toward the traction pedal)
until there is a gap of 1.5 mm (0.060 inch) between the
head of the stop bolt and the bottom of the traction
pedal.
8. Tighten the jam nut to secure the stop bolt in place.
Note: You can adjust the reverse stop bolt if the maximum
reverse speed is too slow. For a faster reverse speed, adjust
the stop bolt inward; for a slower reverse speed, adjust the
stop bolt outward.
Hydraulic System
Maintenance
The reservoir is filled at the factory with approximately 17
L (18 US qt) of high-quality tractor transmission/hydraulic
fluid. The recommended replacement fluid is as follows:
Toro Premium Transmission/Hydraulic Tractor 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, you can use
Mobil® 424 hydraulic fluid.
Note: Toro will not assume responsibility for damage caused
by improper substitutions.
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. A bottle
is sufficient for 15 to 22 L (4 to 6 US gallons) of hydraulic
fluid. Order Part Number 44-2500 from your Authorized
Toro Distributor.

Hydraulic System Safety

WARNING
Hydraulic fluid escaping under pressure can
penetrate skin and cause injury.
• 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.
• Seek immediate medical attention if fluid is
injected into skin.
Checking the Hydraulic
System
Service Interval: Before each use or daily
1. Move the machine on a level surface.
2. Release the traction pedal to the
start the engine. Run engine at lowest possible speed to
purge the system of air. Do not engage the PTO.
3. Raise the deck to extend lift cylinders, shut off the
engine, and remove the key.
40
position and
NEUTRAL