Which procedure should be used to repair a broken fuel tank mounting strap?

Replacing the strap is the most reliable procedure for repairing a broken fuel tank mounting strap. Fuel tank mounting straps are critical components that securely hold the fuel tank in place, ensuring that it does not shift during vehicle operation.

A welded repair may not restore the integrity of the strap, as welding can weaken the metal and potentially create stress points that could lead to failure. Additionally, welding on a strap exposed to fuel or any residue can present safety risks, such as fire hazards.

While using fish plates might be a solution in some structural applications, it requires specialized welding skills and does not guarantee a permanent fix for the strap's specific function and load-bearing requirements. Certified welders may provide more robust solutions for different structural components, but this is not the most straightforward or safest choice for a broken fuel tank mounting strap.

Replacing the tank isolation gaskets is unrelated to the strap itself. Those gaskets help to prevent fuel leaks and isolate the tank from vibrations and noise, but they do not address the structural integrity of a broken mounting strap. For the safety and reliability of the vehicle, the most effective method is to replace the broken strap, ensuring a secure and safe mounting of the fuel tank.