During pre-use inspection, what should you verify about hydraulic hoses?

• A. Only visual appearance
• B. Pressure testing them with the engine running
• C. Leaks or wear
• D. Replace automatically every shift

Answer: (C)

Hydraulic hoses operate under high pressure, so a pre-use check focuses on potential failure indicators. The key is to verify leaks or wear. Leaks around hose ends or along the hose signal compromised seals or damaged material that could fail under pressure. Wear shows up as cracks, swelling, cracking, frayed coverings, bulges, or worn areas where the hose may be weakened. These conditions can lead to sudden hydraulic failure or a fire risk, so they must be addressed before use. Visual clues are important, but they’re not the whole story—check for leaks, hairline cracks, abrasion, damaged fittings, and improper routing near heat sources or moving parts. If you notice any sign of leakage or wear, replace the hose prior to operating the unit. Pressure testing the hose while the engine is running is not a safe or appropriate part of a pre-use inspection, and hoses aren’t replaced automatically every shift.