Cutting Unit Maintenance; Removing The Cutting Units; Installing The Cutting Units; Servicing The Front Roller - Toro Groundsmaster 4500-D Operator's Manual

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.
Figure 79
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
Figure 80
1. Lynch pin
4. Roll the cutting unit away from the machine.
(Figure 79). Cover the top
(Figure 80).
2. Lift-arm pivot pin

Installing the Cutting Units

1. Move the cutting unit into position in front of the
machine.
2. Slide the cutting unit-carrier frame onto the
lift-arm-pivot pin
cutting unit to the pin with the lynch pin (for
Groundsmaster 4500 machines) or retaining nut
(for Groundsmaster 4700 machines).
3. Install the hydraulic motor to the cutting unit
(Figure 79). Make sure that the O-ring is in
position and not damaged.
4. Grease the spindle.

Servicing the Front Roller

Inspect the front roller for wear, excess wobble, or
binding. Service or replace the roller or components if
any of these conditions exist.
Disassembling the Front Roller
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1. Remove the roller-mounting bolt
2. Insert a punch through the end of the roller
housing and drive the opposite bearing out by
alternating taps to the opposite side of inner
bearing race. There should be a 1.5 mm (0.060
inch) lip of inner race exposed.
1. Front roller
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2. Mounting bolt
3. Push the second bearing out in press.
4. Inspect the roller housing, bearings, and bearing
spacer for damage
damaged components and assemble them.
63
(Figure 80). Secure the
(Figure
Figure 81
3. Bearing
4. Bearing spacer
(Figure 81). Replace any
81).
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