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Grinder Maintenance
Replacing the Teeth
Service Interval: Before each use or daily—Check
the condition of the teeth; rotate
or replace any that are worn or
damaged and torque the nuts for all
teeth.
Due to the high amount of wear placed on the teeth,
you need to rotate and replace them periodically
(Figure
29). Before you rotate or replace them,
inspect each tooth holder on the wheel, including the
flat lands that prevent the teeth from rotating. If the
tooth holder is damaged, replace the wheel. Torque
the nuts 68 N∙m (50 ft-lb) for any teeth that you are
not rotating or replacing.
Figure 29
1. Sharp tooth
Each tooth is indexed with 3 positions so you can
rotate it twice, exposing a new sharp edge before
replacing the tooth. To rotate a tooth, loosen the nut
securing the tooth
(Figure
and rotate it 1/3 of a turn, bringing an unused edge to
the outside. Torque the nut securing the tooth to 68
N∙m (50 ft-lb).
To replace a tooth, remove the nut securing the tooth,
then install a new tooth, washer, and nut in the same
position
(Figure
30). Torque the nut securing the tooth
to 68 N∙m (50 ft-lb).
2. Worn tooth
30). Push the tooth forward
1. Tooth
2. Tooth holder
3. Washer
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22
Figure 30
4. Nut
5. Flat land
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