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1. Crank shaft deflection should be taken and recorded.
2. Crank case oil should be removed and sump be cleaned.
3. Crank case inspection should be done so that nothing is left inside.
4. Make sure all the parts are fitted and tightened as per the manual.
5. All the isolated systems are put back into operation one by one, starting from the fresh water system. Leaks should be checked thoroughly.
6. Fresh oil should be taken and lube oil system should be put back in use followed by fuel oil system.
7. Turning gear should be rotated by tommy bar to ensure free movement of crank shaft

checks which must be performed 

 

Lube oil checks

1. Sump lube oil level
2. Governor lube oil level
3. Rocker arm lube oil level
4. Alternator forward and aft bearing lube oil level
5. Lube oil in turbine & blower side of turbo charger

Temperature checks

1. Exhaust gas temperature
2. Turbocharger (inlet-outlet) temperature
3. Booster air inlet temperature

Cooler temperatures

1. Cooling sea water (inlet – out let) temperature in cooler
2. Jacket cooling water (inlet – outlet) temperature
3. Air cooler (inlet -outlet) temperature

Procedure of running generator after O/h

• Open the indicator cock
• Prime the lube oil to all parts by hand pump or by motor driven priming pump
• Ensure that all jacket cooler valves, lube oil cooler valves, air cooler valves should be in open position
• With use of the Turning bar turn the fly wheel and check for any resistance on the bottom end bearing and check any water / fuel coming out through indicator cocks
• While turning engine, check all visible lube oil points are lubricated
• Remove the turning bar from fly wheel and put in the place
• Drain the auxiliary air bottle
• Blow through engine, In order to ensure that no water is inside combustion chamber if it is present it may cause water hammering
• Close the indicator cocks and pull lever from stop to start
• The engine will run on fuel oil once the generator picks up the rated speed.
• Run generator on Half speed, adjust via governer, for 10 sec, Check the crankcase
• Run for 30sec, 1 min, 3min, 5min and check crankcase respectively
• No load run for 10 minutes to warm the engine up, check all parameters
• Put generator on load by closing air circuit breaker
• In order to synchronize the incoming generator with running generator syncroscope method/dark lamp method is used

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