Checking The Hydraulic Lines And Hoses; Cutting Unit Maintenance; Removing The Cutting Units - Toro Groundsmaster 4500-D Operator's Manual

Checking the Hydraulic
Lines and Hoses
Service Interval: Before each use or daily
Every 2 years
Inspect the hydraulic lines and hoses daily for
leaks, kinked lines, loose mounting supports, wear,
loose fittings, weather deterioration, and chemical
deterioration. Make all necessary repairs before
operating the machine.
WARNING
Hydraulic fluid escaping under pressure can
penetrate skin and cause injury.
• Seek immediate medical help if fluid is
injected into skin.
• Make sure 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.

Cutting Unit Maintenance

Removing the Cutting Units

1. Park the machine on a level surface, engage the
parking brake, lower the cutting units, shut off
the engine, and remove the key.
2. Disconnect and remove the hydraulic motor
from the cutting unit
of the spindle to prevent contamination.
1. Motor-mounting screws
3. Remove the lynch pin (for Groundsmaster 4500
machines) or retaining nut (for Groundsmaster
4700 machines) securing the cutting unit-carrier
frame to the lift-arm pivot pin
1. Lynch pin
4. Roll the cutting unit away from the machine.
68
(Figure 85). Cover the top
Figure 85
(Figure 86).
Figure 86
2. Lift-arm pivot pin
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