MV Oriana Propulsion Reversal
The Oriana suffered from vibration problems when at full power. The only solution to resolving this issue was that the Propulsion train would require changing the direction of rotation. This was undertaken in 1999. 4 years after the ship entered service.
In order to complete the reversal, the engines, gearboxes and propellers had to be reversed. Thus, move all the running gear from the port side to the starboard side and the starboard side to the port side.
One of the main engine cam shafts.
As you can see, not very small. The cams are shrunk onto the cam shaft.
This is a view of the main engine cam shaft full length.
Overview of gear box.
The propellor hubs were swapped over, the engine cam shafts were swapped over, the gearboxes required more detailed work, the power input/output shafts required new gears cutting and fitted plus new sprayers for the oil lubrication.
View of the ship after just being docked.
Muff coupling, the last connection of the prop shaft.
The control rod which activates the pitch of the prop blades.
Shaft pulled back about 1 mtr.
Prop hub taken off.
Removing Rudder
Rudder removed and one prop blade left to remove.
This should not be like this…
Prop shaft out.
Lots of white metal, where it should not be.
The carne was called the millennium lifter, costing £25,000 per day to hire, cost £5,000,000 new, there were only 3 in UK. Could lift 1,000 Tonnes at short range.
The crane had to have the reach and lifting ability, the shaft weighing some 65 Tonnes in weight.
The re metaled bushes being forced back into position.
Prop shafts going back in.
Temperature probe pipework. Extra thermometers were fitted before the shots were refined to improve monitoring.
