Carbon brush schedule change

Ever since the issue out, we decided to change out the carbon brush routinely.

Change carbon brush. Return used part to supervisor

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Clean and vacuum out commutator from traces of carbon dust.

There is some spec to take:

Measure Armature resistance (A1 - A2)

[Spec: 6 - 10 OHMS]

Measure Field resistance (E1 - E2):

[Spec: 1.0 K - 3.0K OHMS]

Also need to cascade to the rest of team for deployment.