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What is the most reliable indication of a faulty variable displacement hydraulic pump?

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Question added by Cherif Ameur LABIAD , Senior Hydraulic Engineer , ANRH
Date Posted: 2015/12/07
Milind Thosar
by Milind Thosar , Proprietor , Ramdas engg and consultants

Variable displacement will result in variable current i.e. load. Hence current will be UNIQUE. This can be one indication. If it is stuck at low or high displacment, then variation in volume will be less or negligible.

Ahmed Salah Ahmed Abd- Gelil Mohamed El-baaly
by Ahmed Salah Ahmed Abd- Gelil Mohamed El-baaly , مهندس صيانة , In the unit of Armed force

according ot the type of pump such piston or gear  so the most indication  we can measure it depended on :

the amount of slip  which control the pressure of pump

operation cycle of pump

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