When removing the rectangular base plate, what should be done if the screws are dirty?

Cleaning the screws with a stiff brush is the appropriate action to take when removing the rectangular base plate, particularly because dirt can lead to improper fastening or affect the integrity of the connection. Keeping screws clean ensures that they can be tightened properly, which is crucial for maintaining structural stability and safety.

Dirt or debris on screws can cause issues if not addressed, including stripping the screw heads or the material they're fastened to. By using a stiff brush, you can effectively remove grime and build-up without damaging the screws themselves. This ensures that they function properly and can be reused safely.

While lubrication may seem beneficial, applying it to dirty screws can trap more dirt and might lead to more complications down the line. Replacing the screws could be unnecessary and costly if the screws can be restored through cleaning. Ignoring the dirt and proceeding could jeopardize safety and the effectiveness of the equipment being operated.