Brush spring
- Measure the force of the brush spring using a spring pressure gauge.
- Read the spring pressure gauge at the brush tip projection of 2 mm {0.079 in}.
- Replace the brush spring if necessary.
Standard force
4.1-5.3 N {0.42-0.54 kgf, 0.92-1.19 lbf}
Minimum
1.7 N {0.17 kgf, 0.38 lbf}