Hydraulic Gear Pump Failure Analysis

There are several causes for gear pump failure. This booklet discusses these causes and the various indicators or symptoms of each cause. It further explains pump failure analysis and the preventive measures you can take to avoid repeat failure.

Common causes of pump failure are:

Abrasive wear caused by fine particles

Abrasive wear caused by metal particles

Incorrect installation

Aeration or cavitation

Lack of oil

Damage caused by metal objects

Excessive heat

Overpressure

Incorrect assembly