What can you do to repair a gear pump if only the wear plates are scored and the tips of the teeth have sharp edges?

The best course of action is to change the wear plates and stone off the sharp edges of the gear pump. This approach effectively addresses the wear and damage that has occurred. The wear plates are designed to maintain the proper clearance between the gears and the pump housing, ensuring efficient operation while minimizing internal leakage. If the wear plates are scored, replacing them helps restore the pump’s functionality and efficiency.

Additionally, stoning off the sharp edges of the teeth helps prevent further damage. The sharp edges can lead to increased wear on the pump components, potentially causing additional scoring and inefficiencies. By smoothing these edges, it not only reduces further wear but also promotes better meshing of the gears, thereby improving the overall performance of the pump.

Replacing the entire pump would be far more costly and unnecessary if the only issues are with the wear plates and the gear edges. Similarly, simply oiling the gears and continuing to use the pump ignores the underlying issues that may lead to further damage or failure. Leaving the pump in its current state would likely exacerbate the problems, leading to more serious consequences down the line. Thus, the most effective repair strategy in this case is to replace the wear plates and smooth the gear edges.