Hydraulic System Maintenance; Hydraulic System Safety; Hydraulic Fluid Specification; Servicing The Hydraulic System - Toro 30344 Operator's Manual

Hydraulic System
Maintenance

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.

Hydraulic Fluid Specification

The machines reservoir is filled at the factory with high
quality hydraulic fluid.
Hydraulic system capacity: 5.6 L (6.0 qt)
Hydraulic fluid-type specification:
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 may use
other petroleum-based Universal Tractor Hydraulic Fluids
(UTHF) provided that its specifications fall within the listed
range for all the following material properties and that it
meets industry standards. We do not recommend the use of
synthetic fluid. Consult with your lubricant distributor 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.
Material Properties:
Viscosity, ASTM D445
Viscosity Index ASTM
D2270
Pour Point, ASTM D97
Industry Specifications:
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
fluid is available in 20 ml (2/3 oz) bottles. A bottle is sufficient
for 15-22 L (4-6 US gallons) of hydraulic fluid. Order Part
No. 44-2500 from your authorized Toro distributor.
Servicing the Hydraulic
System
Preparing to Service the Hydraulic
System
1. Move machine to a level surface and set the parking
brake.
2. Place all controls in the
the engine.
3. Run engine at lowest possible engine speed to purge
the system of air.
Important: Do not run the PTO.
4. Cycle steering wheel several times fully to the left and
right, and align the steering wheels straight forward.
59
cSt @ 40°C 55 to 62
cSt @ 100°C 9.1 to 9.8
140 to 152
-35°F to -46°F
position and start
NEUTRAL