Disassembly, Assembly And List Of Parts - Gta250; Disassembly; Assembly - WEG G Serie Manual De Instalación, Operación Y Mantenimiento

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6.11 DISASSEMBLY, ASSEMBLY AND LIST OF PARTS - GTA250

6.11.1 Disassembly

1. Open the cover of the terminal box (9) and disconnect
the cables from the voltage regulator and of the
exciter;
2. Loosen the screws securing the terminal box (10) to
the frame (19) and remove it;
3. Remove the protection screen (20);
4. Loosen the screws holding the front flange (4) to the
frame and remove it;
5. Remove the clamps and thread to release the cables
from the main stator and exciter;
6. Loosen the screws that secure the ND-end shield (11)
to the frame and remove it using a rubber hammer;
7. The removal of the whole rotor must be done by the
front of the alternator, using an appropriate device.
NOTE
To disassemble the alternators with double
bearing (constructive form B35T) first the
flange and the D-end shield must be
removed.
44 l Installation, operation and maintenance manual – Synchronous Alternator – G line - Horizontal

6.11.2 Assembly

1. Check if machined parts of the frame and of the
flange and ND-end shield are clean and with
corrosion protection;
2. Insert the main rotor at the front with an appropriate
device;
3. Check if the o'ring (14) is correctly placed in the
bearing seat of the ND-end shield;
4. Fit the ND-end shield (11) in the bearing and fix it;
5. Place the terminal box into position and secure it with
the appropriate screws;
6. Make the cable connections of the voltage regulator
and exciter according to the alternator wiring diagram
and the voltage regulator manual.
NOTE
To assemble the alternators with double
bearing (constructive form B35T) the flange
and the D-end shield must also be mounted.
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