Which signs indicate that hydraulic hoses should be replaced?

• A. Fading paint on the machine
• B. The number of hours on the engine
• C. Cracking, swelling, bulging, oil leakage, heat damage, or worn/abrasive coating on hoses
• D. The color of hydraulic oil

Answer: (C)

Hoses in a hydraulic system will show clear wear and damage that means they should be replaced. Cracking, swelling, bulging, oil leakage, heat damage, or a worn or abrasive coating on hoses are direct indicators that the hose material has degraded and can fail under pressure. These signs point to potential bursts, loss of hydraulic pressure, or leaks, all of which can lead to unsafe operation or equipment damage. Other factors, like fading paint on the machine, the number of hours the engine has run, or the color of the hydraulic oil, don’t reliably reflect hose condition and aren’t good indicators for replacement. So when you see cracking, swelling, bulging, oil leaks, heat damage, or worn coatings on hoses, replace them to maintain safe, effective operation.