FAA Powerplant Written Practice Test

What technique can be used to prevent binding when tightening exhaust system clamps?

1. Tapping the clamps with a rawhide mallet

2. Using a torque wrench for precision

3. Applying lubricant to the clamps

4. Heating the clamps before installation

The correct answer is: Tapping the clamps with a rawhide mallet

The technique of tapping the clamps with a rawhide mallet is effective for preventing binding when tightening exhaust system clamps. This method helps to seat the clamps evenly and uniformly around the pipe or component they are securing. By gently tapping the clamps, you can ensure that they are aligned properly and that pressure is distributed evenly, which reduces the likelihood of creating stress points that may lead to binding or misalignment as the clamps are tightened. Using a torque wrench for precision is important for achieving the correct tightness but does not address the initial installation and alignment issues that can lead to binding. Applying lubricant to the clamps might seem like it could help with movement; however, it could also reduce the effectiveness of the clamp's grip and create safety concerns. Heating the clamps before installation may change their shape or properties, which could also lead to issues rather than solving them. Therefore, the method of tapping the clamps with a rawhide mallet stands out as the most effective technique to ensure a successful and smooth installation of exhaust system clamps without binding.