N3 Series Brushless Alternators Caterpillar


Alternator - Assemble

Usage:

D6D 01Y

Assembly Procedure

Table 1
Tooling that is needed     A     B    
    Soldering iron (180 watt)            
    Vise or clamping support with vee blocks            
    Press            
8H-8581     Feeler Gauges     3        
1P-0510     Driver Set         1    
1P-0466     Plate         1    
1P-0529     Handle         1    
6L-5897     Bolt         1    



    Illustration 1g00871248

  1. Install the roller bearing (1) with tooling (B) .

    Note: If necessary, apply grease to the bearing.




    Illustration 2g00871460

  1. Install the ring (2) in the rear frame.



    Illustration 3g00871252

  1. Install the insulators for terminal "B+" and terminal "D+".



    Illustration 4g00871347

  1. Install the "R" terminal, if the "R" terminal was replaced.

  1. Install the rectifier (3) in the rear frame.

  1. Install the two screws. Solder the sleeve (4) over terminal "R".

  1. Install the following components on terminals: "D+", "B+" and B-: terminal insulators, washers and nuts.



    Illustration 5g00871376

  1. Position the stator frame (7) on the rear frame (5). Use the marks on the alternator that were made in the disassembly procedure for alignment.



    Illustration 6g00871382

  1. Solder the leads for the stator winding (8) to the terminals for the rectifier (6) .



    Illustration 7g00871385

  1. Install the bearing (9) in the rear frame.

    Note: The bearing is a loose fit.




    Illustration 8g00871389

  1. Install the intermediate ring (10) .



    Illustration 9g00871402

  1. Install the field winding (11). The leads for the winding must fit in the deep groove. Install the six screws on the reverse side of the frame.

  1. Apply the epoxy putty 5P-3321 Adhesive over the lead and the groove.



    Illustration 10g00871407

  1. Install the spacer ring (12) .


    NOTICE

    In the next step you must support the spacer ring. The spacer ring is supported in order to support the bearing inner race.





    Illustration 11g00871415

  1. Install the rotor assembly (13) in the drive end frame (14).



    Illustration 12g00871417

  1. Heat the bearing race (15) to 135 °C (275 °F). Install the bearing race on the shaft.



    Illustration 13g00871447

  1. Connect the drive end and the rotor (16) to the rear housing and the stator frame (17). The marks that were made during the disassembly procedure will help align the alternator. Install the four hex socket screws. Do Not Tighten the hex socket screws.



    Illustration 14g00871452

  1. Insert three 0.3 mm (0.01 inch) feeler gauges (18) between the rotor and the stator. Tighten the screws to a torque of 4.8 ± .7 N·m (3.5 ± .5 lb ft).



    Illustration 15g00871457

  1. Connect the lead for the field coil to the regulator (21). The screw is large in diameter (19) .

  1. Connect the lead for the rectifier and the remaining lead for the field coil (20) to the regulator terminal.

    Note: In order to maintain the proper polarity, one lead for the field coil has a hole that is small in diameter.




    Illustration 16g00871458

  1. Install the regulator (21) on the rear frame assembly. Install the two screws for the regulator.

  1. Install the lead for the suppression capacitor on the "D+" terminal (22) .



    Illustration 17g00871459

  1. Install the regulator cover (23). Install the screws for the regulator cover.

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