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Sluggish operation 

Hydraulic system 

1. 1. 1. 1. Filter dirty 
         2. Relief valve leak 
         3. Ram gland leak 
         4. Air in system 
         5. Oil level low 
         6. Oil temperature high

Pump

1. 1. Air lock 
   2. Single phasing 
   3. Piston / cylinder wear 

 

Mechanical problem 

1. Rudder seized
2. Water ingress in rudder due to crack
3. Rudder damage
4. Pintle bearing damage 
5. Rudder carrier bearing damage 

 

Control feedback

1. Linkage loose/ slack link/ loose nut
2. Spring of feedback system failure 
3. Controller not tuned properly
4. Pin worn out

 

Erratic operation

1. Loose linkages
2. Solenoid valve block not working
3. Telemotor pump faulty
4. Electrical contact face problem

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