A heavy-duty technician is preparing to perform maintenance on a wheel loader. The loader's engine is off, but the technician knows that the hydraulic accumulator holds significant stored energy. What is the correct procedure to safely release the stored energy from the accumulator?

Question: A heavy-duty technician is preparing to perform maintenance on a wheel loader. The loader's engine is off, but the technician knows that the hydraulic accumulator holds significant stored energy. What is the correct procedure to safely release the stored energy from the accumulator?

Answer options: ✅ Cycle the control levers several times after the engine is shut down to relieve pressure.

• Bleed the system through a pressure relief valve using a wrench.
• Wait for a few hours for the pressure to naturally dissipate.
• Disconnect the accumulator hose while wearing appropriate PPE.

Correct answer: Cycle the control levers several times after the engine is shut down to relieve pressure.

Explanation: Cycling the control levers (e.g., raising and lowering the boom) after the engine is off allows the hydraulic fluid to return to the tank, thereby relieving the stored pressure in the accumulator and across the hydraulic system. Bleeding with a wrench is unsafe, waiting is unreliable, and disconnecting hoses under pressure is extremely dangerous.