Hydraulic System Maintenance; Hydraulic System Safety; Servicing The Hydraulic System - Toro Groundsmaster 4000 Operator's Manual

2. Loosen the eye bolt allowing the removal of the
extension spring (Figure
3. Loosen the flange nut securing the stop bolt to
the mounting tab and move the idler pulley away
from the belt to release the belt tension
75).
Note:
Loosen the nut enough to allow the idler
arm to pass the stop bolt.
Note:
If the stop bolt is ever removed from the
mounting tab, make sure that it is installed again
in the hole that aligns the stop-bolt head with
the idler arm.
4. Remove the bolts securing the hydraulic motor
to the mower deck
Figure 76
1. Hydraulic motor
5. Lift the motor off the mower deck and lay it on
top of the mower deck.
6. Remove the old belt from around the spindle
pulleys and idler pulley.
7. Route the new belt around the spindle pulleys
and idler-pulley assembly.
8. Position the hydraulic motor on the mower deck
after routing the belt around the pulleys. Mount
the motor to the mower deck with the bolts
previously removed.
Note:
Ensure that the belt is positioned on the
spring side of the belt guide
9. Connect the extension spring
eye bolt and tension the belt as follows:
•
When properly tensioned, the inside
measurement of the extension spring (hook
to hook) should be approximately 8.3 to 9.5
cm (3-1/4 to 3-3/4 inches).
•
When you attain the correct spring tension,
adjust the stop bolt (carriage bolt) until there
is approximately 2 to 5 mm (0.065 to 0.185
inches) clearance between the head of the
bolt and the idler arm.
75).
(Figure
(Figure 76).
2. Mounting bolts
(Figure 75).
(Figure 75) to the
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.
Servicing the Hydraulic
System
g011511
Checking the Hydraulic Fluid
Service Interval: Before each use or daily
The reservoir is filled at the factory with approximately
29 L (7.75 US gallons) of high-quality hydraulic fluid.
Check the level of the hydraulic fluid before the engine
is first started and daily thereafter. The recommended
replacement fluid is as follows:
Toro Premium All-Season Hydraulic Fluid
(Available in 19 L (5 US gallons) pails or 208 L (55
US gallons) drums. See the Parts Catalog or your
authorized Toro distributor for part numbers).
Alternative fluids: If the Toro fluid is not available,
other conventional, petroleum-based fluids may be
used, provided they meet all of the following material
properties and industry specifications. Check with
your oil supplier to see whether the oil meets these
specifications.
Note:
Toro does not assume responsibility for
damage caused by improper substitutions, so use
only products from reputable manufacturers who will
stand behind their recommendation.
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