Brush Holder & Spring
- Check for smooth movement of brush in brush holder. If movement is sluggish, inspect holder for distortion and/or contamination. Clean, repair or replace as necessary.
- Inspect brush spring for wear, damage or other abnormal conditions. Using a spring tension gauge, check tension of brush spring. Standard tension is 3.53 lbs. (1.6 kg) and minimum tension is 2.2 lbs. (1.0 kg). If tension is less than minimum specification, replace brush spring.