Heavy Duty Equipment Technician Red Seal Exam Prep · Question
If a hydraulic cylinder extends slowly and retracts normally, what is a likely cause?
An internal leak on the rod side of the cylinder would allow fluid to bypass the piston during extension, reducing the effective pressure and slowing the cylind
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Question: If a hydraulic cylinder extends slowly and retracts normally, what is a likely cause?
Answer options:
- Compensator valve malfunction ✅ Internal leak on the rod side of the cylinder
- Excessive pump flow
- Relief valve stuck open
Correct answer: Internal leak on the rod side of the cylinder
Explanation: An internal leak on the rod side of the cylinder would allow fluid to bypass the piston during extension, reducing the effective pressure and slowing the cylinder's movement, while retraction might not be affected as directly.
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