In order to minimize frame service, the customer can reduce the concentration of stress in small areas of the frame. The customer should use the vehicle only for purposes for which it was designed, bearing in mind these principles:

1. Do not overload.
2. Load evenly to avoid confining loads to certain areas.
3. Do not drive the vehicle on extremely rough terrain.
4. When picking a new vehicle frame or reinforcing an old one, consider the operation of equipment (like the snow plow).

When repairing a frame or mounting equipment on a frame, follow these recommended practices:

•	Avoid sudden changes in the section modulus.

•	Do not drill holes in the frame rail flanges.

•	Put at least 33 mm (½ in) between the space holes in the web section of a rail.

•	Use existing holes whenever possible.

•	Do not cut holes with a torch.

•	Do not overheat the frame rails.

•	Avoid welding on the flanges.

•	Allow no more than three holes on the same vertical line of the web.