What should you do if the centrifugal pump binds after replacing parts in the self-priming pump portion of a Gilbarco pump?

When addressing the issue of a binding centrifugal pump after replacing parts in the self-priming pump portion of a Gilbarco pump, adding a paper-thin gasket is a recommended solution. This option effectively allows for precise adjustments in the spacing between the pump components, which is crucial in ensuring that all moving parts operate smoothly without excessive friction or binding.

A paper-thin gasket can help achieve optimal alignment between the pump components, ensuring that the rotor and vanes have the necessary clearance to rotate freely. This adjustment is essential because binding can often result from misalignments or insufficient spacing, leading to increased wear and potential damage to the pump.

Other alternatives, such as filing the rotor or vanes, could risk altering the design and performance specifications of the pump, potentially introducing more issues rather than resolving the binding problem. Similarly, adding spacers might lead to improper alignment if not done precisely, which can exacerbate the situation. Therefore, opting for a paper-thin gasket provides a controlled method to enhance component fitment, thereby alleviating the binding issue effectively.