Heavy Duty Equipment Technician Red Seal Exam Prep · Question
A hydraulic cylinder extends slowly but retracts quickly. What is a likely cause of this issue?
If a cylinder extends slowly but retracts quickly, it suggests an issue specifically affecting the extend movement. A restriction (e.g., kinked hose, clogged fi
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Question: A hydraulic cylinder extends slowly but retracts quickly. What is a likely cause of this issue?
Answer options: ✅ A restriction in the extend line or cylinder port
- A faulty relief valve set too high
- Excessive pressure in the system
- A leak in the retract line
Correct answer: A restriction in the extend line or cylinder port
Explanation: If a cylinder extends slowly but retracts quickly, it suggests an issue specifically affecting the extend movement. A restriction (e.g., kinked hose, clogged filter, partially closed valve) in the extend line or the cylinder's extend port would impede fluid flow in that direction.
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