HGPIDisassembly Operation 11. Prepare turbine compartment roof for removal.2. Remove turbine compartment roof and side panels.3. Remove liquid fuel lines.4. Remove atomizing air lines.5. Remove gas fuel lines (if applicable). See Inspection form M.IR/GT-6307.6. Remove steam injection lines (if applicable). See Inspection form M.IR/GT-6306.7. Remove water injection lines (if applicable).8. Remove liquid fuel check valves.9. Remove false start drain tubing and manifold header.10. Remove fuel nozzles.11. Remove flame detectors and spark plugs.12. Remove 11th-stage and 13th stage cooling and sealing air lines.13. Unbolt and open up combustion outer casing covers.14. Remove crossfire tube retainers, crossfire tubes, combustion liners and forward flowsleeves.15. Remove the atomizing air extraction manifold from the upper half turbine casing. Inaddition to the extraction manifold, remove the upper half inlet de-icing piping, ifapplicable, and the upper half exhaust frame cooling piping. Discard all gaskets andcover all pipe openings. Identify the bolting for reassembly.16. Remove outer combustion casings.17.Remove exhaust and inlet plenum access panels.18.Take initial compressor and turbine rotor positioning checks.19.Disconnect wiring and conduit in turbine compartment area (remove only if it will interfere with turbine area work).20.Place mechanical support jacks under turbine casing (see figure HGP-D2).21.Remove turbine casing bolts and upper half first-stage nozzle eccentric pin.22.Remove upper half turbine casing (see figure HGP-D3).23.Take turbine clearance checks.24.Unbolt and remove transition pieces.25.Take first-stage nozzle radial concentricity checks.26.Remove upper half first-stage nozzle.27.Remove lower half first-stage nozzle eccentric pin.28.Remove lower half first-stage nozzle (straps).29.Remove lower half second- and third-stage nozzle radial retainingpins.30.Remove lower half second- and third-stage nozzle segments (seefigure HGP-D12).31.Remove upper half second- and third-stage nozzle radial retainingpins.32.Remove upper half second- and third-stage nozzle segments.