Brush Test
- Connect one 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 In. (mm) | Minimum In. (mm) |
|---|---|---|
| 929 | .69 (17.5) | .39 (10.0) |
BRUSH TENSION SPECIFICATIONS
| Application | Standard Lbs. (Kg) | Minimum Lbs. (Kg) |
|---|---|---|
| 929 | 4.3-5.1 (1.9-2.3) | 1.5 (.7) |