Question 374General Subjects - Assistant Engineer

The correct answer is A) ensure that correct spring pressure is applied to the seating faces. When installing a mechanical shaft seal, it is critical to apply the correct spring pressure to the seating faces. This ensures proper sealing between the stationary and rotating seal components, preventing leaks. The spring pressure must be carefully adjusted to the manufacturer's specifications to allow the seal to function as intended. The other options are incorrect because: B) polishing the seating faces is generally not necessary for proper seal installation, C) running the pump "dry" could damage the seal, and D) making final adjustments with the pump running may not be possible or recommended, as the seal should be properly installed and adjusted before operation.