Monday, 18 February 2019

CAUSE OF LOW PRESSURE OR NO PRESSURE [FAULT 1]

Trouble in Hydraulic Unloader  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 Unloader  Valve"
1) Fault :-  Low or No pressure.  

Probable causes and Remidial action.

1. Orifice of main piston choked. 
>>  Clean the orifice. 
2.  Vent connection open to tank. 
>> Plug the vent connection. 
3. Safety valve  at  zero setting 
>>  Set  the safety valve at proper pressure. 
4.  Broken  or weak spring 
>>  Replace the spring. 
5.  Worn ball  or seat. 
>>  Replace. the ball  or seat. 

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