KIT- 4519218 - Caterpillar

Remove rivets (2) and balancing weight cover (3) .
Illustration 3 g03343705
Note: Location of balancing weights (5) in exciter armature (4). Do not remove unless replacement of exciter armature (4) is required. If replacement of exciter armature (4) is required, balancing weights (5) must be installed in the same locations.
Illustration 4 g03332784
Illustration 5 g03332790
Illustration to show locations of wiring connections and mounting.Note: Do not remove diode support plate (13). Diode support plate (13) is mounted to the laminations of exciter armature (4) with thread-forming screws. If removed new holes will need to be tapped in the laminations to reinstall the diode support plate (13) to exciter armature (4) .Note: Orientation of varistor (11) in relation to the key of exciter armature (4) for reassembly.
Mark orientation of clamps (7). Loosen clamps (7) .
Mark orientation of wiring (9) to diode assembly studs (10). Disconnect wiring (9) .
Disconnect diode assembly wiring (6) from diode support (12) .
Remove screws from diode support (12) .
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Use Tooling (A) to remove exciter armature (4) .
Use two people to remove exciter armature (4). Refer to Table 2 for the approximate weight of exciter armature (4).
Table 2
Approximate Weight of Exciter Armature (4)    
Model     Approximate Weight    
LC 5    
19 kg (42 lb)    
LC 6    
20 kg (44 lb)    
LC 7    
25 kg (55 lb)    
Remove the diode support assembly.Installation Procedure
Illustration 7 g03333213
Note: Inspect exciter rotor (4) inside diameter for damaged laminations that may have occurred during removal. Replace exciter rotor (4) if damage is severe.Note: To aid in installation, raise the temperature of the exciter rotor (4) and diode support (12) in an oven 110° C (230° F). The diode support (12) must be removed if using an induction heater.
Orientate diode support (12) so the key of the exciter armature (4) and varistor (11) are in the same relation before removal.
Apply Tooling (B) to the screws in diode support (12). Install the screws in diode support (12) .
Connect diode assembly wiring (6) to diode support (12) .
Illustration 8 g03343731
Use two people to install exciter armature (4). Refer to Table 3 for the approximate weight of exciter armature (4) .
Use Tooling (C) to install exciter armature (4).
Table 3
Approximate Weight of Exciter Armature (4)    
Model     Approximate Weight    
LC 5    
19 kg (42 lb)    
LC 6    
20 kg (44 lb)    
LC 7    
25 kg (55 lb)    
Illustration 9 g03337105
Connect wiring (9) from the main rotor (8) to the diode assembly studs.
Tighten clamps (7) .
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Install balancing weight cover (3) and rivets (2) .
Illustration 11 g03332704
Install bearing cap (1) in the orientation that bearing cap (1) was removed.End By: Install the bearing.