Brush Holder & Spring Inspection
- 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.
- Check for continuity across insulated (positive side) brush holder and grounded (negative side) brush holder. If there is no continuity, brush holder is good. If there is continuity, insulation is bad. Replace brush holder as an assembly.
- 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). Minimum tension is 2.2 Lbs. (1.0 Kg). If less than minimum, replace brush spring.