We decided to remove the rudder, dismantle the propeller and pull the prop shaft in order to undertake a thorough inspection. The stern tube was pressure tested and found to be leaking so it too was removed.
The propeller components were cleaned and polished. A new a new pitch control shaft manufactured to ensure the pitch control mechanism works correctly.
The main shaft was found to be worn and the stern tube badly eroded by electrolysis. The bearings were worn down to nothing and the propeller shaft was not being lubricated in the stern tube.
The mounting on the aft end was badly corroded and one of the main bolt holes was broken away. Continue reading “Rudder, Propeller & Shafts”