Component Maintenance Manual
12037 N Highway 99
Seminole, OK 74868
Phone (405) 382-0731
Fax (405) 382-0737
http://www.enviro-ok.com
7.1.4 Commutator Inspection
Inspect commutator per following figures for excessive or uneven wear. The commutator
should have a burnished appearance with light filming. If the commutator is black, burned,
pitted, grooved, or excessively worn, the motor should be replaced. If the commutator
brush wear grove depth exceeds 0.015”, the motor should be replaced.
7.1.4.1 Commutator in excellent condition is still bright and shows little sign of wear.
Figure 3.3: Commutator Excellent Condition Example
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