Condition
| Action
|
Loads greater than the frame is designed to
carry causes sag.
| Straighten and reinforce the frame. Refer to
Frame Straightening Description
in Straightening
Frames.
|
Uneven load distribution causes sag.
|
Abrupt changes in the section
modulus.
|
Improper body, or accessory mounting, which may include the following:
| • | Holes drilled in the flange of the frame rail. |
| • | Too many holes in the web section of the rail. |
| • | Holes in the web section which are too close to each other. |
| • | Four or more holes in the same vertical line of the rail web. |
| • | Welds on the flange, particularly across the flange or along its
edge. |
| • | Cutting holes in the rail with a torch. |
| • | Cutting notches anywhere on the rails. |
|
A collision involving the vehicle causes the following conditions:
|
The use of equipment for which the frame has not been designed or reinforced
causes the following conditions:
|
