Marine Quest

  Generator. Cylinder head 1. FIRST OF ALL, REMOVE THE SPLIT COTTER AND SPRINGS. 2.  TAKE OUT THE INLET AND OUTLET VALVES. 3.  CLEAN THE CYLINDER HEAD THOROUGHLY IN CHEMICAL TO REMOVED ALL CARBON. DRAIN THE CHEMICAL AND BLOW AIR. 4. WHEN CYLINDER HEAD IS DRY THEN INSPECT THE CYLINDER HEAD FOR ANY DAMAGED IN SEAT. DAMAGED SEAT TO BE REMOVED AND NEW SEAT TO BE INSTALLED. 5. INLET AND EXHAUST VALES ARE ALSO INSPECTED AFTER CLEANING FOR ANY CRACK AND PITTING AND SIGNS OF CUT MARK. IF  CUT MARK IS THERE THAN NEW VALVE SHOULD BE USED. 6. THE VALVE GUIDE TO BE INSPECTED FOR CLEARANCE. IF CLEARANCE IS MORE THAN VALVE GUIDE TO BE REMOVED. 7.  SPRINGS SHOULD BE INSPECTED FOR SPRIING ACTION. 8.  VALVE ROTATOR TO BE OPENED. BALLS TO BE CHECKED FOR FLATNESS AND BELEVELLE WASHER TO BE CHECKED FOR DEEP BALL MARKING IN WASHER AS IT WILL RESTRICT THE MOTION OF THE VALVE ROTATOR. RENEW BALL AND WASHER FOR EFFICIENT OPERATION. 9.  IN CASE PITTING IS PRESENCE IN SEAT AND ...

  1) Inform company and take permission. 2) Take immobilisation certificate from port state control. 3) Read the manual and have a tool box meeting with everyone involved in the job. Discuss the complete procedure. 4) Prepare important tools and spares required for overhauling liner as given in the manual 5) Prepare risk assessment and make sure all personal safety equipment are used 6) Shut starting air for Main Engine and display placards 7) Engage turning gear 8) Open indicator cocks for all the cylinders 9) Stop main lube oil pump and switch off the breaker 10) Once the engine jacket temperature comes down, shut the inlet water valve for the unit to be overhauled 11) Keep other units in Jacket preheating system to maintain the jacket temperature 12) Drain the jacket water of the concerned unit from exhaust v/v and liner. 13) Shut the fuel oil to the particular unit whose liner is to be removed 14) Dismount the cylinder head using dedicated lifting tools 13) Discard the sealing ...