Heavy Duty Equipment Technician Red Seal Exam Prep · Question
A technician is decommissioning a large hydraulic cylinder. After safely bleeding off system pressure and disconnecting the lines, what remaining energy specific to the cylinder itself must be safely accounted for before disassembly?
Even after bleeding the main system, nitrogen accumulators integrated into hydraulic cylinders can store significant, dangerous pressure. Also, residual pressur
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Question: A technician is decommissioning a large hydraulic cylinder. After safely bleeding off system pressure and disconnecting the lines, what remaining energy specific to the cylinder itself must be safely accounted for before disassembly?
Answer options:
- Residual electrical charge in the solenoid valve.
- Kinetic energy from the weight of the piston rod. ✅ Stored pressure within the nitrogen accumulator, if present, or potential trapped pressure in the cylinder itself.
- Magnetic energy in the steel components.
Correct answer: Stored pressure within the nitrogen accumulator, if present, or potential trapped pressure in the cylinder itself.
Explanation: Even after bleeding the main system, nitrogen accumulators integrated into hydraulic cylinders can store significant, dangerous pressure. Also, residual pressure can be trapped within the cylinder chambers, which must be safely relieved.
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