LC5000, LC6100, and LC7000 Electric Power Generation Caterpillar

Removal Procedure

Start By:

1. Remove optional permanent magnet pilot exciter (PMG) attachment if equipped.

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Personal injury or death can result from high voltage. When power generation equipment must be in operation to make tests and/or adjustments, high voltage and current are present. Improper test equipment can fail and present a high voltage shock hazard to its user. Make sure the testing equipment is designed for and correctly operated for high voltage and current tests being made. When servicing or repairing electric power generation equipment: Make sure the unit is off-line (disconnected from any utility and/or other generators that can provide power service), and either lock out or tag as "DO NOT OPERATE". Remove all fuses. Make sure the generator engine is stopped. Make sure all batteries are disconnected. Make sure all capacitors are discharged. Failure to do so could result in personal injury or death. Make sure residual voltage in the rotor, stator and the generator is discharged.

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High voltage may be present. The power source must be disconnected before working on the equipment. Failure to disconnect the power source could result in injury or death. Verify that the equipment is not energized before performing any maintenance. This work must be performed by trained personnel with correct tools and procedures.

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Bodily contact with electrical potential can cause bodily injury or death. To avoid the possibility of injury or death, ensure that the main power supply has been disconnected before performing any maintenance or removing any modules.

1. Open the AC breaker.

2. Disconnect DC battery supply.

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Illustration 1	g03331743
Illustration of panel (1) shown is a factory shipping cover only.

3. Remove panel (1) .

4. Remove terminal panel (2) and lifting eye (3) .

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Illustration 2	g03331066

5. Remove air inlet screen (4) .

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Illustration 3	g03331069

6. Remove outer bearing cover (5) .

7. Remove bolts (6) from the bearing cap.

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Illustration 4	g03332334

8. Insert Tooling (A) between main rotor (7) and stator (9) surfaces.

   Note: Minimum length of Tooling (A) is equal to the length of the main rotor (7). Length of main rotor is approximately 660 mm (26.0 inch). Tooling (A) must be the correct thickness to allow support of the main rotor (7) after bracket assembly (8) is removed.

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Illustration 5	g03331091

9. Attach Tooling (B) and a suitable lifting device to bracket assembly (8). Refer to Table 2 for the approximate weight of bracket assembly (8).
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   Table 2

   Approximate Weight of Bracket Assembly (8)
   Model	Approximate Weight
   LC 5	54 kg (119 lb)
   LC 6	77 kg (170 lb)
   LC 7	114 kg (251 lb)

10. Remove bolts (10) and bracket assembly (8) .

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Illustration 6	g03331138

Note: Mark orientation of exciter stator (11) for reassembly.

11. Use two people to remove exciter stator (11). Refer to Table 3 for the approximate weight of exciter stator (11).
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    Table 3

    Approximate Weight of Exciter Stator (11)
    Model	Approximate Weight
    LC 5	18 kg (40 lb)
    LC 6	23 kg (51 lb)
    LC 7	34 kg (75 lb)

12. Remove ring (12) and O-ring seal (14) .

Installation Procedure

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Illustration 7	g03331138

1. Use two people to install exciter stator (11). Refer to Table 4 for the approximate weight of exciter stator (11).
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   Table 4

   Approximate Weight of Exciter Stator (11)
   Model	Approximate Weight
   LC 5	18 kg (40 lb)
   LC 6	23 kg (51 lb)
   LC 7	34 kg (75 lb)

2. Install ring (12) and O-ring seal (14) .

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Illustration 8	g03331770

3. Install Tooling (C) into bearing cap (15) .

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Illustration 9	g03331781

4. Attach Tooling (B) and a suitable lifting device to bracket assembly (8). Refer to Table 5 for the approximate weight of bracket assembly (8).
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   Table 5

   Approximate Weight of Bracket Assembly (8)
   Model	Approximate Weight
   LC 5	54 kg (119 lb)
   LC 6	77 kg (170 lb)
   LC 7	114 kg (251 lb)

5. Guide Tooling (C) through the bolt holes of bracket assembly (8). Position bracket assembly (8) and install bolts (10) .

6. Remove Tooling (B) .

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Illustration 10	g03331753

7. Remove Tooling (A) from between main rotor (7) and stator (9) surfaces.

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Illustration 11	g03331069

8. Remove one Tooling (C) and install one bolt (6). Remove other Tooling (C) and install other bolt (6) .

9. Install outer bearing cover (5) .

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Illustration 12	g03331066

10. Install air inlet screen (4) .

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Illustration 13	g03331743

11. Install terminal panel (2) and lifting eye (3) .

12. Install panel (1) .

13. Connect the DC battery supply.

14. Close the AC breaker.

End By: Install optional permanent magnet pilot exciter (PMG) attachment if equipped.