In case of some serious defect in piston, piston rod, connecting rod etc. then its not possible to let these parts move as this will cause further damage. in such case if we have to run the ship till the next port following procedure is carried out.
Procedure :-
- Fuel is cut off by lifting and securing the roller guide.PUTTING FUEL PUMP OUT OF ACTION
- Put the exhaust valve out of operation to put the exhaust valve closed.
- Dismantle the starting air line. this is done by blanking the main line and control air pipe for the actual cylinder. In this case, the blanking of the starting air supply is very important , as otherwise the starting air will blow down the suspended engine component.
- Suspend the piston, piston rod and crosshead and take the connecting rod out of the crankcase.
- Lube oil to crosshead is stopped.
- Set the lubricator to zero delivery.