1.Positive holder (+) brushes
2. Negative holder (-) brushes
3.Positive holder (+) brushes
4. Negative holder (-) brushes
2. Insert the brush into the holder and guide the brush towards the commutator, then hook the steelyard onto the spring. Measure the spring tension as the spring lifts the brush.
2. spring; 3. brush
Spring tension: 15.7-17.7N