Which condition indicates a hydraulic hose should be rejected?

A hydraulic hose should be rejected if damage extends through the outer reinforcement ply. This condition signifies that the internal structure of the hose, which is designed to withstand high pressures, may be compromised. The outer reinforcement ply serves as a protective layer, and if damage penetrates beyond that layer, it can lead to catastrophic failures, leaks, or bursts during operation.

The integrity of the hydraulic system relies heavily on the condition of the hoses, and any indication that the structural integrity has been breached poses a serious safety risk. Maintaining hoses in optimal condition is crucial to prevent accidents and ensure the efficient operation of the hydraulic system. In contrast, other options such as minor chafing may not be severe enough to warrant immediate rejection, and the use of plastic fittings, while commonly not preferred, is not inherently a rejection condition unless specifically stated in the manufacturer's guidelines. The length of the hose, while it should be correct for the application, does not affect the structural integrity in the same immediate way that damage through the outer ply does.