What is the purpose of a frame machine?

• A. To straighten and realign structural components
• B. To cut out damaged sections
• C. To repaint the frame
• D. To measure wheel alignment

Answer: (A)

A frame machine is used to restore a vehicle’s structural geometry by straightening and realigning damaged components. It provides controlled pulling forces through hydraulic lines, clamps, and anchors that grab onto reference points on the chassis or body. Technicians compare the damaged frame to OEM specifications, then use the machine to pull the sections back into the exact positions required. This ensures the frame is true, so doors, panels, and other parts fit properly and the vehicle will drive and crash as designed.

This isn’t about cutting out damaged sections, repainting, or measuring wheel alignment. Cutting tools handle damaged metal, painting is a finishing step after the structure is repaired, and wheel alignment uses its own equipment to set suspension geometry once the frame is back to spec.