Hydraulic System Maintenance; Hydraulic System Safety; Checking The Hydraulic Lines And Hoses; Servicing The Hydraulic System - Toro T4240 Operator's Manual

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.
Checking the Hydraulic
Lines and Hoses
Service Interval: Before each use or daily
Check the hydraulic lines and hoses for leaks, kinked
lines, loose mounting supports, wear, loose fittings,
weather deterioration, and chemical deterioration.
Make all necessary repairs before operating.
Servicing the Hydraulic
System
Service Interval: Every 500 hours
Note:
Keep water away from electrical components.
Use a dry cloth or brush to clean such areas.
This procedure is best carried out when the hydraulic
oil is warm (not hot). Lower the cutting units to the
ground and drain the hydraulic system.
1. Remove the oil tank filler flange to gain access
to the suction strainer.
2. Unscrew and remove the strainer and clean with
paraffin or petrol before installing.
3. Install the return line oil filter element.
4. Install the transmission oil filter element.
5. Fill the hydraulic tank with fresh clean hydraulic
oil of the recommended grade.
6. Run the machine and operate all hydraulic
systems until the hydraulic oil is warm.
7. Check the oil level and top up as necessary to
the upper mark on the sight level gauge.
1. Suction strainer
2. Oil tank suction flange

Hydraulic Fluid Capacity

77 L (20.3 US gallons)
Checking the Hydraulic
Fluid
The reservoir is filled at the factory with high-quality
hydraulic fluid. Check the level of the hydraulic fluid
before first starting the engine and daily thereafter.
The recommended replacement fluid is Toro
Premium All Season Hydraulic Fluid—available in
19 L (5 US gallon) pails or 208 L (55 US gallon) drums.
Alternative fluids: If the Toro fluid is not available,
other conventional, petroleum-based fluids may be
used, provided that they meet all the following material
properties and industry specifications. Check with
your hydraulic fluid supplier to see whether 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 recommendation.
High Viscosity Index/Low Pour Point Antiwear Hydraulic
Fluid, ISO VG 46 Multigrade
Material Properties:
Viscosity, ASTM D445
41
Figure 45
3. Filler strainer
4. Drain plug
cSt @ 40°C (104°F)
44 to 50
cSt @ 100°C (212°F)
7.9 to 9.1
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