Inspection and Maintenance — GEK 107048Major Inspection — Reassembly Procedures
MI-R-6
Operation 6 — Perform Hot Gas Path Reassembly Operations 1 Through 10
Note: Refer to the Hot Gas Path Inspection section, in this Service Manual for
the following reassembly operations.
1. Install lower half first-stage nozzle and eccentric pin.
2. Install lower half second and third-stage nozzle segments and radial retaining pins.
3. Install lower half second and third-stage nozzle segments wheelspace thermocouples.
4. Install upper half first-stage nozzle.
5. Install upper half second and third-stage nozzle segments and radial retaining pins.
6. Recheck first-stage nozzle concentricity.
7. Recheck turbine clearances.
8. Install transition pieces.
9. Install upper half turbine casing.
10. Install wheelspace thermocouple wiring and conduit.
Operation 7 — How to Install Compressor Rub Ring
1. Apply a light coating of turbine oil to the compressor rub ring and assemble to the lower half inlet
casing.
Operation 8 — How to Install Upper Half Compressor Inlet Casing
CAUTION
Check the lower half inlet casing for cleanliness and for-
eign matter before installing upper half inlet casing.
1. Clean and deburr the upper and lower half inlet casing horizontal joints.
2. Rig to lift the upper half casing and install guide pins.
3. Apply joint compound to the lower half horizontal joints. See the Standard Practices section for
recommended solvents, sealers and cleaners.
4. Carefully lower the upper half casing to the lower half taking care to prevent casing from swing-
ing into the rotor or adjacent flanges.
5. Apply anti-seize compound to the bolting and dowels, install bolting and dowels. Do not overlook
the six inner twelve point bolts. Torque bolts alternately from the center of each flange toward
each end.
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