What tools should be used for aligning a coupling?

Using a straightedge and feeler gauge is an effective method for aligning a coupling because it provides a precise way to check for parallelism and gaps between the coupled components. The straightedge can be placed along the faces of the couplings to determine if they are aligned properly, while the feeler gauge can measure any small gaps that may exist. This combination allows for accurate adjustments to be made, ensuring a proper fit and operation of the coupling.

A straightedge offers a clear reference line, while the feeler gauge provides a way to quantify misalignments that might not be visible to the naked eye. Proper alignment is critical as it helps to reduce wear and tear on mechanical components, ensures efficient operation, and prolongs the lifespan of the equipment in which the coupling is used.