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"1) Fault :- Tamping unit not going down.
Probable causes and Remidial action.
A) Tamping unit lock not open.
Ensure that the lock is properly open.
B) Un-locking indication limit switch not functioning properly.
For proper functioning of limit switch input indication X5A for LH and X5B or RH should not appears on programme panel. If input is indicated, Limit switch is defective and should be replaced.C) No system pressure.If no system pressure, Check delivery from 38X22 hydraulic pump. If delivery is ok, Check non-return Valve, unloader valve and safety valve. Replace the defective one.
D) Defective propotional valve.
Ensure propotional valve ok. Follow these steps:-
a) Check the supply on propotional valve coupler with tamping pedal pressed. If it is found there and still, unit doesn't operate, propotional valve is defective. Replace defective propotional valve.
b) Operate propotional valve mannualy. If unit operates, the propotional valve is ok, and the problem is insolenoid coil. Replace the coil or complete propotional valve.
E) No supply on propotional valve when tamping pedal is pressed.
a) Visualy examine the lock, limit switch, transducer fork and cord wire of the transducer. If no defect is noticed follow these steps :-
Check deflaction on galvanometer 18G3 of programe panel with switch on position 1 for LH and position 2 for RH and do as follow:-
i) If there is no deflection, Check supply of 24V and 12V on programme panel. Ensure of 24V and 12V.
ii) If supply voltages ok, Check output voltage of +15V and +10V of PCB EK813SV (10U5). If output is not proper, Replace the PCB EK813SV.
iii) If output voltage is ok, Check for output signal Q10 for LH and Q11 for RH. If output signal is ok , Check relay Re1,Re2,and Re5 respectivly of PCB EK16. Replace defective relay. Check for fuse os EK16 and replace it if defective.
iv) If output signal Q10 and Q11 is not OK, check the following:
# Check switch for tamping system X19 in 'ON' position (Input signal X19 should come on programme panel).
# Tamping switch X10 should be in 'ON' position (Input signal X10 should come on programme panel).
# Check input signal X13 and X14.
If no input signal, check tamping depth transducer for slipped fork, broken chord wire or defective potentiometer.
v) Output signal from depth transducer or both tamping unit is not synchronizing (difference more). If defference is more than 100 mm, either X13 or X14 will not come). To operate both, the difference should be less than 100mm.
vi) Check switch X3E, tamping without lining should not be pressed (Input X3E should not come).
vii) If all the above conditions are fulfilled and still Q10 and Q11 is not coming, replace PCB EK16.
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"
1) Fault :- Tamping unit not going down.
A) Tamping unit lock not open.
Ensure that the lock is properly open.
B) Un-locking indication limit switch not functioning properly.
For proper functioning of limit switch input indication X5A for LH and X5B or RH should not appears on programme panel. If input is indicated, Limit switch is defective and should be replaced.
C) No system pressure.
If no system pressure, Check delivery from 38X22 hydraulic pump. If delivery is ok, Check non-return Valve, unloader valve and safety valve. Replace the defective one.D) Defective propotional valve.
Ensure propotional valve ok. Follow these steps:-
a) Check the supply on propotional valve coupler with tamping pedal pressed. If it is found there and still, unit doesn't operate, propotional valve is defective. Replace defective propotional valve.
b) Operate propotional valve mannualy. If unit operates, the propotional valve is ok, and the problem is insolenoid coil. Replace the coil or complete propotional valve.
E) No supply on propotional valve when tamping pedal is pressed.
a) Visualy examine the lock, limit switch, transducer fork and cord wire of the transducer. If no defect is noticed follow these steps :-
Check deflaction on galvanometer 18G3 of programe panel with switch on position 1 for LH and position 2 for RH and do as follow:-
i) If there is no deflection, Check supply of 24V and 12V on programme panel. Ensure of 24V and 12V.
ii) If supply voltages ok, Check output voltage of +15V and +10V of PCB EK813SV (10U5). If output is not proper, Replace the PCB EK813SV.
iii) If output voltage is ok, Check for output signal Q10 for LH and Q11 for RH. If output signal is ok , Check relay Re1,Re2,and Re5 respectivly of PCB EK16. Replace defective relay. Check for fuse os EK16 and replace it if defective.
iv) If output signal Q10 and Q11 is not OK, check the following:
# Check switch for tamping system X19 in 'ON' position (Input signal X19 should come on programme panel).
# Tamping switch X10 should be in 'ON' position (Input signal X10 should come on programme panel).
# Check input signal X13 and X14.
If no input signal, check tamping depth transducer for slipped fork, broken chord wire or defective potentiometer.
v) Output signal from depth transducer or both tamping unit is not synchronizing (difference more). If defference is more than 100 mm, either X13 or X14 will not come). To operate both, the difference should be less than 100mm.
vi) Check switch X3E, tamping without lining should not be pressed (Input X3E should not come).
vii) If all the above conditions are fulfilled and still Q10 and Q11 is not coming, replace PCB EK16.
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