Trouble in Hydraulic Pump
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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 Pump"1) Fault :- Pump not delivering oil.
Probable causes and Remidial action.
A) Pump driven in wrong direction (at the time of new pump fitment, this problem may occur). Check the pump rotation by hand priming. Pour the hydraulic oil into inlet port and rotate the shaft. See whether the oil is delivering through outlet port or not. If not, change the rotation according to the engine shaft rotation.
B) Oil level too low in the reservoir (if oil level is very low, aeration may take place and pump will not deliver oil).
Check oil level in reservoir. It should be above minimum mark. If necessary, recoup the oil.
C) Intake filter/pipe choked.
Clean or replace filter for proper flow of oil.
D) Air leaks in pump intake joints.
Pour hydraulic oil on intake joints and on observing abnormal sound, tighten the intake joint as required.
E) Broken pump shaft or rotor.
Replace the broken shaft or rotor. Also align the prime mover shaft
F) Pump speed too slow. (The delivery rate of discharge is prescribed at a certain rpm of engine. If engine speed become less than ideal speed, it may affect the proper suction of oil).
Pump should run at prescribed speed. Engine rpm should be checked.
G) Dirty suction filter.
Replace the filter.
H) Faulty suction valve.
Repair or change the valve.
I) Air in system.
Discharge air from the system.
J) Pump drive inoperative.
i) Replace the broken pump shaft.
ii) Replace the sheared spline.
iii) Change defective coupling.
K) Clutch out of adjustment.
Adjust clutch.
L) Pump is damaged.
Replace with new one.
Now we study about "Hydraulic Pump"
1) Fault :- Pump not delivering oil.
Probable causes and Remidial action.
A) Pump driven in wrong direction (at the time of new pump fitment, this problem may occur).
B) Oil level too low in the reservoir (if oil level is very low, aeration may take place and pump will not deliver oil).
Check oil level in reservoir. It should be above minimum mark. If necessary, recoup the oil.
C) Intake filter/pipe choked.
Clean or replace filter for proper flow of oil.
D) Air leaks in pump intake joints.
Pour hydraulic oil on intake joints and on observing abnormal sound, tighten the intake joint as required.
E) Broken pump shaft or rotor.
Replace the broken shaft or rotor. Also align the prime mover shaft
F) Pump speed too slow. (The delivery rate of discharge is prescribed at a certain rpm of engine. If engine speed become less than ideal speed, it may affect the proper suction of oil).
Pump should run at prescribed speed. Engine rpm should be checked.
G) Dirty suction filter.
Replace the filter.
H) Faulty suction valve.
Repair or change the valve.
I) Air in system.
Discharge air from the system.
J) Pump drive inoperative.
i) Replace the broken pump shaft.
ii) Replace the sheared spline.
iii) Change defective coupling.
K) Clutch out of adjustment.
Adjust clutch.
L) Pump is damaged.
Replace with new one.
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