3000 Frame SR5 Electric Power Generation Caterpillar

Generator Front Bracket - Remove

Start By:

1. Remove the generator from the engine. Refer to the "Generator - Remove" section of this document.

2. Remove the coupling and the generator drive hub. Refer to the "Coupling - Remove" section of this document.

1. Remove the hub (1).
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   Illustration 1	g01631914
   (1) Generator Drive Hub (2) Alignment Mark for the Fan (3) Close Coupling Adapter (4) Front Bearing Bracket (5) Close Coupling Adapter Mounting Bolts (6) Fan Mounting Bolts (7) Fan (8) Alignment Mark for the Close Coupling Adapter to the Front Bearing Bracket

2. Install a suitable lifting device on the close coupling adapter.

3. Make an alignment mark (8) from the close coupling adapter (3) to the front bearing bracket (4). Remove the close coupling adapter mounting bolts (5).

4. Remove the close coupling adapter (3).

   Note: The removal of the close coupling adapter is optional for some installations. That is, removal of the close coupling adapter is not needed in all installations.

5. Install a suitable lifting device on the front bearing bracket (4).

6. Place the same type of protective strips (13) that are discussed at the beginning of this section in the two "Notice" paragraphs. The protective strips (13) must be placed between the main rotor and main stator.
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   Illustration 2	g01618688

7. Remove the RTD.
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   Illustration 3	g01618697
   (14) Location of the Resistance Temperature Detector (RTD)

8. Remove the mounting bolts that attach the front bearing bracket to the generator stator housing.

9. Use a pry bar in order to separate the front bracket and the rear bracket from the generator. Some front brackets have provisions which allow the use of forcing screws. Remove the front bracket from the generator.

   Note: The bearing sleeve (23) should come off with the generator end bracket (22). However, the bearing should remain on the main rotor shaft.

   1. The "Resistance Temperature Detector" (RTD) must be removed in order to allow sleeve removal from the bracket. If the sleeve is not going to be replaced, then make an alignment mark on the sleeve and on the bracket. The alignment mark will ensure that the sleeve will be installed correctly into the bracket when the generator is put back together.

      Note: In Illustration 5, the sleeve and the front bracket have the positions labeled as 12 o'clock, 3 o'clock, 6 o'clock and 9 o'clock (27).

   2. Remove the mounting bolts for the sleeve (26) from the bracket (25).
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      Illustration 4	g01979356
      (25) End Bracket (26) Bearing Sleeve

   3. Use a pry bar in order to remove the sleeve.

Illustration 5	g01979375
(25) End Bracket (27) Labels for Bearing Sleeve

Generator Front Bracket - Install

1. Reverse the removal procedure in order to assemble the front bracket to the main stator housing.

2. Install the bearing sleeve into the front bracket. Install the mounting bolts for the bearing sleeve.

3. Ensure that the bearing is correctly installed on the main rotor shaft.

4. Attach a suitable lifting device to the front bracket. Assemble the front bracket to the main stator housing.

5. Install the mounting bolts that attach the front bearing bracket to the generator stator housing.

6. If the generator is equipped with a "Resistance Temperature Detector" RTD, install the RTD in the front bracket.

7. Remove the protective strips.

8. Install the close coupling adapter.

9. Refer to the "Coupling - Install" section of this publication in order to install the hub and the coupling.