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Sulzer fuel pump timing adjustment

  • Engine should have run 30 mins of diesel oil before stoppage
  • Open the indicator cocks, shut the main air starting valve and engage the turning gear
  • close the fuel supply and ruturn valve on the fuel pump
  • Drain the remaining fuel from the fuel pump
  • Inspect the cams and rollers
  • The stagnation pressure control valve has to be dismantled
  • Note the valve desiganation S-suction , D- delivery and U- for spill valve
  • Remove the valve cover and the springs
  • Pressure bushes are released using special wrench
  • The vavles are removed using a withdrawal device
  • Examine valve seats and contact surfaces. Defective should be reconditioned or replaced
  • The valve contact surface in fuel pump block should be in good condition.Damaged surfaces must be reconditioned
  • After cleaning the fuel pump block throughly the suction and spill valves are cleaned in diesel oils and fitted back respectively without their springs
  • The pressure bushes are tightened to 300Nm
  • The dial gauges should be inspected before mounting it to their holes
  • Start the oil pump for bearings and crossheads and adjust pressure to normal operation 
  • set reversing lever on emergency control stant to ahead
  • The fuel lever is removed from remote position and engaged to position " 8 "
  • The shutdown servo motor is set to its working position
  • The piston of the shutdown servomotor is locked in position by means of spacing tube and tensioning bolts
  • The control air shut off valves are closed and then system is vented
  • The fuel quality setting lever is to Zero . Note its position befor mixing
  • Replace the VIT cam with a circular running in disc
  • Set the fuel lever on the emergency control stand. So that the pointer on adjusting scale is on 8. Specified on the accepatance record
  • Make sure the VIT indicator is at 0(zero) and the roller is in contact with the circular disc and no spaces are there to reduce the fuel delivery

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