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Combustion Inspection — Disassembly Procedures
10. The cover should be set face down on blocks large enough to prevent the fuel nozzle faces from
touching (four–inch minimum). Another approach would be to bolt the cover to a holding fixture
that allows safe handling. Figure CI-D.12 shows the fixture used for assembly of this part. Draw-
ings for the fixture are available.
11. The remaining covers may be removed in a similar manner. The bottom end covers will require
a side cable to control swing because they are under the main compressor.
12. Remove and scrap end cover gaskets. Do not reuse.
Operation 13 — How to Remove the Crossfire Tube Retainers, Combustion Liners, and
Crossfire Tubes
1. Remove the crossfire tube spring retainers (two retainers per combustion casing assembly). Tag
and identify all spring retainers according to chamber position. See Figures CI-D.13 and CI-D.14.
2. Push the crossfire tube clear of the combustion liner on each side of the combustion case.
3. Using the combustion liner pulling tool (see Figure CI-D.15), carefully pull the combustion liner
straight out to disengage it from the forward flow sleeve liner stops and the transition piece.
4. Place the combustion liners with the cap end upward on a piece of plywood to prevent damage
to the liner. Identify each liner according to chamber position.
5. Pull each inner crossfire tube half inboard to remove the crossfire tube half sections from each
side of the combustion case. Identify and tag each inner crossfire tube half section to its combus-
tion case location.
6. Release the outer crossfire tube packing by removing the bolts, the split washers and sliding back
the sealing rings. See Figure CI-D.13.
7. Carefully work the outer crossfire tube inboard through the combustion casing crossfire tube
opening.
Note: A chain type pipe wrench will help in freeing the outer tube during dis-
assembly.
CI-D-14
CAUTION
Exercise caution when removing combustion liners to en-
sure that the crossfire tube collars and combustion liner
spring seals (hula seals) do not snag the forward liner
stops.
CAUTION
Refer to Section 2, "Standard Practices" for marking of
nickel base alloys.
Inspection and Maintenance — GEK 107048
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