Blade Maintenance; Blade Safety; Servicing The Blade Plane - Toro Groundsmaster 4500-D Operator's Manual

3. Press the second bearing into the roller housing
(Figure 100). Pressing equally on the inner and
outer race until the inner race comes in contact
with the spacer.
4. Install the roller assembly into the deck frame.
5. Verify that there is no more than a 1.5 mm (0.060
inch) gap between roller assembly and the roller
mount brackets of the deck frame. If there is a
gap over 1.5 mm (0.060 inch), install enough
5/8-inch diameter washers to take up the slop.
Important:
Securing the roller assembly
with a gap larger than 1.5 mm (0.060 inch)
creates a side load on the bearing and can
lead to premature bearing failure
6. Torque the mounting bolt to 108 N∙m (80 ft-lb).

Blade Maintenance

Blade Safety

A worn or damaged blade can break, and a piece of
the blade could be thrown toward you or bystanders,
resulting in serious personal injury or death.
•
Inspect the blade periodically for wear or damage.
•
Use care when checking the blades. Wrap the
blades or wear gloves, and use caution when
servicing the blades. Only replace or sharpen the
blades; never straighten or weld them.
•
On multi-bladed machines, take care as rotating 1
blade can cause other blades to rotate.

Servicing the Blade Plane

The mower deck comes from the factory preset at 5
cm (2 inches) height of cut and blade rake of 7.9 mm
(0.310 inch). The left and right heights are also preset
to within ± 0.7 mm (0.030 inch) of the other.
The mower deck is designed to withstand blade
impacts without deformation of the chamber. If a solid
object is struck, inspect the blade for damage and the
blade plane for accuracy.
Inspecting the Blade Plane
1. Remove the hydraulic motor from the mower
deck and remove the mower deck from the
machine.
2. Use a hoist (or minimum of 2 people) and place
the mower deck on a flat table
3. Mark 1 end of the blade with a paint pen or
marker. Use this end of the blade to check all
heights.
4. Position the cutting edge of the marked end of
the blade at 12 o'clock (straight ahead in the
direction of mowing)
height from table to cutting edge of blade.
9:00
74
(Figure 101) and measure
12:00
3:00
6:00
G011353
Figure 101
g011353