WHY EXESSIVE NOISE OR CHATTER [FAULT 3]

Trouble in Hydraulic Relief Valve

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Now we study about "Hydraulic Relief Valve"

3) Fault :-  Excessive noise or chatter. 

Probable causes and Remidial action.

1. High oil velocity  through valve.  
>> Check  valve  flow rating.  Replace with larger valve, if necessary .   
2. Distorted control spring. 
>>  Replace spring.
3. Worn poppet or seat in cover. 
>> Replace popet or seat.
4. Vent line too long. 
>>  Replace restrictions e.g. needle valve  or orifice. Plug in vent line next to the relief valve. 
5. Valve    pressure setting  too close  to that of another  valve in circuit. 
>>  Set relief valve pressure  atleast  150 PSI higher than other valves in circuit.