* Bending: Heat alone won't straighten a bent frame. You need specialized equipment like a frame machine to pull the frame back into alignment.
* Cracking: Heat can worsen cracks or even create new ones in the metal, making the frame weaker. Welding is typically necessary to repair cracks, and even then, it requires skill and the right welding procedure.
* Rust: Heat might temporarily improve the appearance of rusted areas but won't address the underlying corrosion that weakens the frame. Rust repair often involves cleaning, grinding, and possibly applying a rust-inhibiting primer before any welding or reinforcement.
Applying heat without proper understanding of metallurgy and frame repair techniques could severely compromise the structural integrity of the truck frame, potentially leading to dangerous failure. Always seek professional repair from a qualified mechanic or body shop specializing in frame repair. They have the necessary equipment, expertise, and safety precautions to do the job correctly.
