Checking The Cooling System; Checking The Hydraulic Fluid - Toro Groundsmaster 3400 Operator's Manual

Checking the Cooling System

Service Interval: Before each use or daily
CAUTION
If the engine has been running, the pressurized, hot
coolant can escape and cause burns.
• Do not open the radiator cap when the engine
is running.
• Use a rag when opening the radiator cap, and
open the cap slowly to allow steam to escape.
The cooling system is filled with a 50/50 solution of water
and permanent ethylene glycol antifreeze.
1. Clean any debris off the screen, oil cooler, and the front
of the radiator daily and more often if conditions are
extremely dusty and dirty. Refer to
from the Cooling System (page
2. Check the level of the coolant in the expansion tank
(Figure 22).
Note: Check and ensure that the coolant level is
between the marks on the side of the tank.
1. Expansion tank
3. If the coolant level is low, remove the expansion tank
cap and replenish the system. Do not overfill.
4. Install the expansion tank cap.

Checking the Hydraulic Fluid

The machines reservoir is filled at the factory with
approximately 32 L (7.0 UK gallons) of high-quality hydraulic
Removing Debris
38).
g025068
Figure 22
fluid. Check the level of the hydraulic fluid before you
start the engine for the first time and daily thereafter. The
recommended replacement fluid is as follows:
Toro Premium All Season Hydraulic Fluid (Available in
19 L (5 gallon) pails or 208 L (55 gallon) drums. See parts
catalog or Toro Distributor 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
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.
High Viscosity Index/Low Pour Point Anti-wear Hydraulic
Fluid, ISO VG 46
Material Properties:
Viscosity, ASTM D445
Viscosity Index ASTM
D2270
Pour Point, ASTM D97
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 to 22 L (4 to 6 gallons) of hydraulic
fluid. Order Part No. 44-2500 from your authorized Toro
distributor.
1
Biodegradable Hydraulic Fluid - Toro Premium Synthetic
Bio Hyd Fluid
Toro Biodegradable Hydraulic Fluid (Available in 5
gallon pails or 55 gallon drums. See parts catalog or Toro
distributor for part numbers).
Note: Toro Premium Synthetic Bio Hyd Fluid is the only
synthetic biodegradable fluid approved by Toro. This fluid is
compatible with the elastomers used in Toro hydraulic systems
and is suitable for a wide range of temperature conditions.
This fluid is compatible with conventional mineral oils, but
for maximum biodegradability and performance the hydraulic
system should be thoroughly flushed of conventional fluid.
g025068
Contact your local Toro Distributor for details.
1. Position the machine on a level surface, lower the
cutting units, and shut off the engine.
2. Check the sight level gauge on the side of the tank. The
level needs to be at the upper mark.
3. If hydraulic fluid is needed, clean area around the cap
of hydraulic tank
4. Remove the cap from the tank.
19
cSt @ 40°C 44 to 48
cSt @ 100°C 7.9 to 8.5
140 to 160
-34°F to -49°F
(Figure 23).