Monday, 18 February 2019

WHY GENRETED ERRATIC PRESSURE IN HYDRAULIC RELIEF VALVE [FAULT 1]

Trouble in Hydraulic Relief Valve

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This is a series of trouble shooting technique  for the track machine working in Indian Railway.  When you study  this you able to rectify a fault of machine. If this is helpful for you than share with others. It may helps them. Thanks for sharing.

Now we study about "Hydraulic Relief Valve"
1) Fault :-  Erratic pressure.  

Probable causes and Remidial action.

1.  Foreign material in the oil. 
=> Drain the oil, clean the tank  and refill with clean oil.                       
2. Worn poppet valve or   seat . 
      (oil  from pilot stage will go to tank due to worn poppet  valve or seat and pressure will drop). 
=>  Replace poppet  valve or seat as required.
3. Piston sticking  in main body. 
=> Clean piston after dismantling. Check free movement after re- assembling . 



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