Gas Turbine Labyrinths Clearances, Couplings Unbolting, Compressor Rotor

After removing all bearing upper liners, labyrinths clearances w.r.t rotor surface are taken, by means of feeler gauge.
The labyrinths are air labyrinth and the oil resisting labyrinth.
First Stage Nozzle and Inner Support Ring
Gas Turbine Labyrinths Clearances, Couplings Unbolting, Compressor Rotor
The first stage nozzle is in two halves, bolted together, and supported with the side supporting blocks. The blocks are removed first, then the nozzle rings bolting is removed. The upper half of the nozzle ring is lifted up, whereas, the lower one slides from one end to remove from the housing. Nozzle ring rests on the inner support ring which is bolted with the CDC inner cylinder aft end.

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