PTT system
| Motor commutator | |
| Standard diameter | 19.00 mm (0.7480 in) |
| Limit | 18.00 mm (0.7087 in) |
| Standard undercut | 1.50 mm (0.0591 in) |
| Limit | 1.00 mm (0.0394 in) |
| Motor brush | |
| Standard length | 11.00 mm (0.4331 in) |
| Limit | 4.5 mm (0.18 in) |

| Motor commutator | |
| Standard diameter | 19.00 mm (0.7480 in) |
| Limit | 18.00 mm (0.7087 in) |
| Standard undercut | 1.50 mm (0.0591 in) |
| Limit | 1.00 mm (0.0394 in) |
| Motor brush | |
| Standard length | 11.00 mm (0.4331 in) |
| Limit | 4.5 mm (0.18 in) |