GE MS6001B, Maintenance Instructions Manual

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Inspection and Maintenance — GEK 107048 Major Inspection — Reassembly Procedures
MI-R-2
12. Check the anti-rotation pin and install the upper half number two bearing liner.
13. Apply joint sealant to bearing strap and install bearing strap shims and bearing strap.
14. Lightly coat the dowel pins and bolts with anti-seize compound, install dowel pins, bolts and
torque alternately.
15. Apply joint sealant to number two bearing housing, install upper half bearing housing to the lower
bearing housing.
16. Lightly coat dowel pins and bolts with anti-seize compound, install dowel pins and bolts. Torque
bolts alternately from the center of each flange joint outward.
17. Reconnect any instrumentation and tubing which was removed.
Operation 2 — Recheck Compressor Clearances and Thrust
CAUTION
The thrust bearings must be fully assembled when taking
thrust measurements. Any movement of the unit rotor
without fully assembled thrust bearings will cause the unit
journals to move axially in the bearing liners causing the
compressor blades to engage the stator blades. Such con-
tact can cause major blade damage.
1. Recheck all thrust and compressor clearances. Refer to disassembly operation 15, step 1 through
11 of this major inspection for procedure and clearances to be taken.
2. Record the thrust and clearance measurements on Inspection Forms PGS/GT-FF-6117, 6106 and
6108.
Operation 3 — How to Install Inner Compressor Discharge Casing
CAUTION
Inspect the inner case for cleanliness and foreign matter
prior to assembly of the top half casing.
1. Clean and deburr the horizontal flange on the lower half casing.
2. Assure the four dowel pins, two forward and two aft are assembled in the horizontal joint and the
tapped bolt holes are clean.
3. Rig to lift the top half inner compressor discharge casing. Lift the casing, clean and deburr the
horizontal joint flange.
4. Set the upper half inner compressor casing in place and assure that all dowels are in place.