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 (
). 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 20
1.
Sharp tooth
2.
Worn 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
(
). Push the tooth forward 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
(
). Torque the nut securing the tooth to 68 N∙m
(50 ft-lb).
Figure 21
1.
Tooth
4.
Nut
2.
Tooth holder
5.
Flat land
3.
Washer
18
