Friday, 15 February 2019

Trouble with Tamping Units and it's remedial action fault 6

Trouble with Tamping units.

You are on n4net and this is indian railway track machine trouble shooting with you.

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 "Tamping Unit"
6) Fault :-  Satellite forward movement failed.

Probable causes and Remidial action.

A)  No system pressure.
Check system pump, unloader valve and safety valve for proper functioning.  Replace defective ones. 
B) Proportional valve defective. 
Operate proportional valve manually. Feel the outlet pipe. If surge is not felt, valve is defective. 
C) Satellite motor defective.
If proportional valve is OK,  remove satellite drive motor from reduction gearbox, operate proportional valve manually.  If motor rotates, motor is Ok.  If not, replace satellite motor. 
D) Defective planetary gearbox. 
Replace the planetary gearbox. 
E) Defective bye-pass valve 
Replace the defective bye-pass valve. 
F) Satellite drive axle not engaged properly. 
Ensure satellite drive axle is engaged properly. 
G) Satellite gearbox pinion, gear or shaft damaged.
Replace pinion, shaft or gear of satellite gearbox as required.
H) No supply on satellite drive proportional valve. 
i) Check   deflection   on   galvanometer 18G3  (at position-3). 
* If no  deflection, check power supply 24V and 12 V and ensure proper power supply. 
* If power supply is proper, check output +15V and +10V on PCB EK813 SV (10U5)  
ii) If output is correct, check signal Q61 – X61 
    If output is not correct – 
* Check input signal X12 by joy stick for forward movement or X11 by pedal drive.  If either of the signal comes, X0F should come. 
 * Signal 6F should not come.  If 6F signal is coming, check whether tamping units are in middle or in upper position.
iii)  If Q61 – X61 is OK – 
 Check relays Re1, Re2, Re5 and Re6 (ELT.663) of PCB EK24.  Replace defective relays. 
iv) If all the above conditions are OK and still no supply to proportional valve, replace PCB EK24.  

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