How to Identify Cavitation in a Disassembled Hydraulic Pump?

Cavitation in hydraulic pumps is typically identified by pitted or eroded patterns and a sandblasted appearance on internal components, both of which result from the implosive force of collapsing vapor bubbles in the fluid.

When examining a disassembled hydraulic pump for signs of cavitation, there are specific indicators to look out for. Cavitation is a phenomenon that can cause damage to the pump components, resulting in distinctive patterns and appearances.

Pitted or Eroded Patterns

One common sign of cavitation is when the internal components of the pump show a pitted or eroded type of pattern. This damage can be observed as tiny dents or holes on the surface of the metal. These patterns are caused by the formation and collapse of vapor bubbles in the fluid. The implosive force of these collapsing bubbles can remove small bits of metal from the components, resulting in pitting or erosion.

Sandblasted Appearance

Another indication of cavitation is when internal components appear to have a sandblasted texture. This texture is also a result of the implosive force exerted by the collapsing cavitation bubbles. The force can wear away the material, giving the parts a rough and eroded appearance similar to that of sandblasting.

By recognizing these signs of cavitation in a disassembled hydraulic pump, you can take appropriate measures to address the issue and prevent further damage to the pump's components.