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Major Inspection — Reassembly Procedures
3. If alignment is not within limits, realign as necessary under the direction of your General Electric
Company Field Service Representative.
Operation 18 — How to Install Magnetic Pickup Ring, Accessory and Load Couplings
1. Reinstall the magnetic pickup ring to the front of the inlet casing and number one bearing area.
2. Lift accessory coupling. Reorient the matchmarks placed on the accessory gear to coupling, both
sleeves to the coupling shaft and the turbine rotor to coupling sleeve at disassembly.
3. Add a small amount of oil to new O-rings to prevent damage to rings when installing on the hubs,
install O-rings and accessory coupling bolting.
4. Torque bolts per the Basic Alignment Instruction (Field) in the Reference Drawing section of this
Service Manual.
5. Fill the accessory coupling hubs with oil, refer to the Standard Practices section, Lubrication
Guidance Chart in this Service Manual for proper oil and amount required to fill coupling. Re-
place fill plugs.
6. Reconnect the magnetic pickup wiring to the magnetic pickup ring.
7. The load coupling will already be in place and bolted to the turbine rotor. The load coupling will
have to be reconnected to the load gear coupling flange. Refer to the Basic Alignment Instruction
(Field) in the Reference Drawing section of this Service Manual for the proper assembly and bolt-
ing procedure.
Operation 19 — How to Install Coupling Guards
1. Assemble the accessory gear coupling guard, short section, to the turbine end coupling guard
spacer and bolt in place.
2. Assemble the long section coupling guard to the accessory gear end and over the short section.
Install bolting to accessory gear end, install gasket wide washers, lockwashers and nuts to the two
holes mating the two guard sections together. Tighten down all bolting.
3. Assemble the bottom cover, install bolt, lockwasher and nut and tighten down.
4. Assemble load coupling guard to load gear end, install lockwashers, bolts and tighten down.
5. Assemble load coupling guard and bolt in place using lockwasher.
6. Assemble screening around aft end exhaust plenum tunnel and bolt screen to mounting blocks
maintaining 0.38 in. minimum clearance around the outside diameter of load coupling guard.
Operation 20 — Perform Hot Gas Path Reassembly Operations 15 and 16
Note: Refer to the Hot Gas Path Inspection section in this Service Manual for
the following reassembly procedures.
1. Assemble turbine compartment roof, blowers, side panel and doors.
2. Clean up, operate and leak check unit.
MI-R-12
Inspection and Maintenance — GEK 107048
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