The potential failure of small loaders is the fault of some small loaders in the gradual development, but has not yet shown in the function of small loaders, and at the same time is close to the stage of germination of these failures, when this situation of small loaders can be diagnosed, that is, it is considered to be a fault phenomenon, and called potential failure.

For example, in the process of fatigue failure of small loader parts, the crack depth is gradually expanded, and the depth is detectable. When the depth of crack propagation in some parts of a small loader is detected to be close to the allowable critical value, it is considered to be a potential fault and must be treated as if it were an actual fault.

Timely discovery of the potential failure of small loaders, it is possible to eliminate the small loaders before functional failure, which is conducive to keeping the small loaders in good condition, to avoid the adverse consequences that may be caused by the occurrence of functional failure, which is of great significance in the practical use and maintenance of small loaders.