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In cases where both the pinion and gear teeth of the main reduction gear have been slightly indented by foreign material, what action should you take?
A) Both the pinion and gear should be relieved of all raised metal around the indentation.
B) Closely monitor the damage to see if it spreads.
C) Remove the foreign material that caused the indentation and return the unit to service.
D) Replace both the pinion and gear.
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