When removing packing, you should:

In the process of removing packing, particularly in applications involving pumps or valves, it is crucial to ensure a proper seal when reassembling. Removing packing on both sides of the lantern ring is important because it allows for a more thorough inspection of the components within the assembly. The lantern ring, which is designed to guide the flow of lubricant or sealant to the packing material, may have accumulated debris or uneven wear that can affect performance. By removing packing from both sides, the operator can better assess the condition of the lantern ring and ensure that any potential issues are addressed.

This approach also helps in ensuring that the new packing can be properly seated during reinstallation, minimizing the risk of leaks once the assembly is put back into operation. Effective sealing is essential in maintaining operational efficiency and preventing leaks which could lead to equipment failures or safety hazards. Thus, option A emphasizes a comprehensive technique that supports better maintenance practices.