Brush Test
- Connect ohmmeter lead to positive brush holder and other lead to negative brush holder. If continuity exists, replace brush holder assembly.
- Check brush length. See BRUSH LENGTH SPECIFICATIONS TABLE . If brush length is less than specified, replace brushes.
- Using brush spring scale, measure spring tension. See BRUSH TENSION SPECIFICATIONS TABLE . If tension is less than specified, replace brush holder assembly. Ensure brushes move freely in holders.
BRUSH LENGTH SPECIFICATIONS
| Application | Standard Length In. (mm) | Minimum Length In. (mm) |
|---|---|---|
| 4-Cylinder | .70 (16.0) | .40 (10.0) |
BRUSH TENSION SPECIFICATIONS
| Application | Standard Ft. Lbs. (N) | Minimum Ft. Lbs. (N) |
|---|---|---|
| 4-Cylinder | 4.2 (18.6) | 2.6 (11.8) |