Brushes & Springs
Check brush spring tension, contact surface condition and brush length. Check lead clip and wire connections. Check condition of brush holders. See BRUSH SPRING TENSION or MINIMUM BRUSH LENGTH table.
BRUSH SPRING TENSION
| Application | Spring Tension Lbs. (kg) | |
|---|---|---|
| Hitachi | ||
| S114-475A | 3.5-4.4 (1.6-2.0) | |
| S114-520B | 4.0-4.9 (1.8-2.2) | |
| S114-617A | 4.0-4.9 (1.8-2.2) | |
| Mitsubishi | ||
| M1T72085 | 3.1-5.7 (1.4-2.6) | |
| M2T53882 | 3.1-5.7 (1.4-2.6) | |
| M3T37782 | 3.1-5.7 (1.4-2.6) | |
MINIMUM BRUSH LENGTH
| Application | Minimum Brush Length Inch (mm) | |
|---|---|---|
| Hitachi | ||
| S114-475A | .43 (10.9) | |
| S114-520B | .43 (10.9) | |
| S114-617A | .43 (10.9) | |
| Mitsubishi | ||
| M1T72085 | .47 (11.9) | |
| M2T53882 | .45 (11.5) | |
| M3T37782 | .45 (11.5) | |