Frame Straightening

When straightening the frame, make sure the following requirements are met:
- NOTE: Straightening of the front frame convolute can cause frame degradation and is prohibited.
  
  Straightening should only be attempted on a frame that fails to meet specifications of the diagonal checking method or where damage is apparent.
- Straightening should be limited to parts which are not severely bent.
- NOTE: Do not use water to cool the frame after heating. Drenching a hot frame with water causes the frame to become brittle and changes the strength of the frame. Let the frame cool naturally.
  
  If heat is needed to straighten a frame member, keep the temperature below 650°C (1200°F) and at a dull red glow.
- Heat should be kept to a minimum area so that the hardness of the metal will not be affected.