Monday, 18 February 2019

Why Motor overheats [Fault 2]

Trouble in Hydraulic Motor

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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 Motor"
2) Fault :-  Motor overheats

Probable causes and Remidial action.

1. Wrong oil grade.
>>>  Fill oil as recommended. 
2. Oil speed in system too high.
>>>  Install pipes of proper size. 
3. Motor rotor groove worn out.
>>> Change motor parts. 
4. Radial or axial loading too high.
>>> Limit to acceptable amount, check alignment limit.  
5.  Initial speed rises
>>> Check max, pressure, if  needed replace with larger  capacity  and install pipes of  nominal bore. 
6.  Inadequate cooling.
>>>  Increase cooling capacity
7. Cooling system is dirty. 
 >>> Clean the cooling system
8. Differential pressure too low.
>>> Increase pressure setting of relief valve. 
9. Pressure too high.
>>> Reduce pressure setting. 
10. Wrong type of pressure valve.
>>>Replace by appropriate type of valve. 
11. Wrong seal size.
>>> Replace by suitable seals. 
12. Motor running speed high.
>>>Reduce speed. 
13.Cavitation.
>>> Bleed the system
14.Oil foams.
>>> Vent the system. 
15.Venting dirty.
>>> Clean the  vents. 
16.System contaminated.
>>> Flush the system. 
17.Sharp bends in suction line.
>>> Eliminate bends or at least reduce them. 
18.Motor is of under capacity.
>>> Install motor of proper capacity.

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