Table of Contents
Advertisement
Combustion Inspection — Disassembly Procedures
8. Identify each outer tube, packing gland assembly and bolting according to chamber and location.
9. Discard the ring packings.
10. Remove the remaining combustion liners, inner crossfire tubes and outer tubes by repeating steps
1 through 9. Identify each piece according to chamber location.
Operation 14 — How to Remove the Access Port Blank Flange from Upper Half Turbine Casing
or the Upper Section of the Atomizing Air Extraction Manifold
Note: If unit is designed for inlet deicing piping this blank flange port is used
for the deicing piping and the port will not be accessible. The upper half
atomizing air extraction manifold must than be removed to gain access
to the transition piece aft area.
1. Unbolt and remove the access port blank flange (if available) from the upper half turbine casing.
If access port is not available proceed to step 2.
2. Unbolt the air extraction flange just below the turbine casing horizontal joint and the two upper
half flange connection to the turbine casing. See Figure CI-D.17.
3. Remove the upper extraction pipe, discard gaskets and cover all piping openings. Bag and identi-
fy the bolting for reassembly.
Operation 15 — How to Remove the Outer Combustion Casings and Flow Sleeves
Note: The outer casing flange bolts can best be removed using an impact
wrench and a long extension to reach between and behind the combus-
tion casings. Identify each combustion casing for position location.
CI-D-18
CAUTION
Prior to unbolting and removing any combustion outer
cases, insure that the location of the outer combustion case
mounting flange to the compressor discharge case bulk-
head bolting circle is clearly scribed on the combustion
case and the compressor discharge casing. This location is
required during reassembly in order to maintain the origi-
nal clearance gap between the two halves of the inner
crossfire tubes during reassembly.
Refer to the combustion chamber arrangement drawing in
the Parts Lists and Drawing Volume of the Service Manual
for complete details.
Inspection and Maintenance — GEK 107048
Advertisement
Table of Contents
