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Can’t using compressed air to blow carbon from the motor actually force carbon into the motor and possibly create a ground??
That is correct
You didn't show the inspection of the switch machine layout, rods, insulation, adjustment, etc. Blowing dust into the motor can create a ground. If you suspect you have a ground on the motor lead, disconnect one lead and megger it to ground.
those gears could use some more grease.
Can’t using compressed air to blow carbon from the motor actually force carbon into the motor and possibly create a ground??
That is correct
You didn't show the inspection of the switch machine layout, rods, insulation, adjustment, etc. Blowing dust into the motor can create a ground. If you suspect you have a ground on the motor lead, disconnect one lead and megger it to ground.
those gears could use some more grease.