A. Disconnect the brush pigtails from their contacts and circulate air through the units. B. Disconnect the brush pigtails from their contacts and discharge carbon dioxide into the units to keep them dry. C. Lift the brushes from commutator collector rings and use the built-in heater to prevent moisture accumulation. D. Lift the brushes from commutator collector rings and circulate cool dry air through the units. « Previous Next »
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