What is required for a pump when the gland follower is pulled all the way down?

When the gland follower of a pump is pulled all the way down, it indicates that the packing material around the shaft has likely been compressed and may need replacement. Packing serves to seal the area around the pump shaft, preventing leaks of the pumped liquid. Over time, as the pump operates, the packing can wear out or deteriorate, leading to increased clearances and potential leaks. When the gland follower is fully tightened, if there is still leakage, it suggests that the packing material has reached the end of its service life and needs to be replaced.

Replacing the packing is a crucial maintenance step to ensure the efficient functioning of the pump, minimize leaks, and maintain safety and performance within the pumping system. Other options, such as a new filter, an oil change, or a pressure gauge, may not directly address the issue of sealing and leakage created by worn packing material.