The Inspection learns us that the leakage apparently was caused by a blocked drain pipe (blind flange was not removed) from the Turbine bearing. The jacking oil was switched on and the oil from the jacking could not flow out of the bearing housing, this made that the oil level in the bearing housing was rising and after a while the level came up to the shaft level this is the moment that the oil starts to flow out of the bearing thru the shaft seal. The oil was leaking into the isolation of the Turbine Exhaust casing. Now it is the question how to remove and replace the isolation

Заранее спасибо

"The Turbine Rear Frame (TRF), as General Electric calls it (Rolls Royce calls it Tail Bearing Housing and Pratt & Whitney’s name for it is Turbine Exhaust Casing), is the part downstream of the last turbine stage, see figure 1. The TRF is used for mounting the engine onto the aircraft wing and to deswirl (remove the angular component) the outgoing flow"

http://www.essays.se/about/Exhaust+Casing/

можно погуглить:
впускная=газоприемная/выпускная часть (корпуса) турбины