After replacing the packing in a lineshaft well's motor, what should the operator expect to see?

When packing in a lineshaft well's motor is replaced, it is expected that there will be a small trickle of water when the pump is operating. This occurs because the packing is designed to provide a seal around the shaft while allowing for some leakage to lubricate the packing material and help maintain its durability. A small amount of leakage is typically normal as it helps prevent overheating and damage to the packing itself.

If there were no water flowing at all, it might indicate that the packing is either too tight or improperly installed, which could hinder the efficiency of the pump and potentially cause damage. Continuous water flow without interruption could suggest that the packing is too loose, leading to excessive wear and the risk of failures. Only air bubbles coming from the spigot would suggest a significant problem such as air entering the pump system, which would also be undesirable.

Thus, the presence of a small trickle of water is a sign that the packing is functioning correctly, balancing effective sealing with the necessary lubrication to prolong the life of the equipment.