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Mechanical Engineering

Jairo Andrés Plata Pinzón

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About Jairo Andrés Plata Pinzón

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    Colombia

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  1. I am investigating the root cause of a telescopic cylinder failure. The cylinder was being used to lower a mast. It is a 4 stage cylinder. The 4th stage retracted completely but in the middle of the stroke of the 3rd stage, the 2nd stage began to retract simultaneously with the 3rd stage (under normal operating conditions the plungers retract one by one). I am wondering why this could happen. Reading manuals and literature I believe the seals between the plunger of the third and second stages failed and oil from the 2nd stage entered to the 3rd stage and it caused an hydraulic lock. This made
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