Unwanted noises are usually caused by improperly controlled
relative motion between components. There are four means to prevent noises
after component replacement or repair.
| • | Attach the components securely so there is no relative motion
during operation. |
| • | Separate the components so there is no contact under normal operating
conditions. |
| • | Insulate the components so no sound occurs with relative motion
between the surfaces. |
| • | Provide a low friction surface to eliminate a stick slip motion. |
