MAGNETO GP 7C0753 - Caterpillar

Disassembly Procedure
Start By:
Remove the alternator from the machine. Refer to Disassembly and Assembly, "Alternator - Remove" for the machine that is being serviced.Note: Before disassembly, clean the exterior of the alternator in order to prevent dirt from entering the unit.
Table 1
Tooling that is needed    A    B    C    
    Soldering iron (180 watt)                
    Vise or clamping support with vee blocks                
    Press                
6V-2166     Puller Group     1            
5F-7465     Puller             1    
9S-9152     Bearing Pulling Attachment             1    
1P-0456     Spacer             1    
5B-9603     Bolt (3/8 - 16 NC)             2    
5M-2894     Washer (3/8 inch flat)             2    
1P-0074     Slide Hammer Puller Group         1        
2P-2312     Legs         2        
    5/8 - 18 Hardened Flat Washer         1        
    5/8 - 18 Jam Nut         1        The following disassembly procedure shows the disassembly of the N3 series alternator (35 amperes).
Care must be taken in the following step not to damage the alternator. Do not overtighten the vise.
Position the alternator in a vise or a similar clamping device.
Remove the following components: the pulley nut, the pulley and the fan.
Illustration 1 g00870070
Remove the two screws (1). Then remove the regulator cover.
Illustration 2 g00870086
Remove the nut from the "D+" terminal (2) .
Disconnect the lead for the suppression capacitor (3) .
Remove the two screws (4) that mount the regulator.Note: The step may be unnecessary, if the component will not be tested or replaced.
Illustration 3 g00870144
Pull the regulator (5) partially away from the frame. This will expose the terminals for the regulator. The terminals for the regulator are the "D+" (7) and the "DF" terminals (6) .
Disconnect the two leads for the "D+" terminal (7). Disconnect the one lead for the "DF" terminal (6) .
Illustration 4 g00870150
Mark the following components with a marker for proper alignment during assembly:front frame, stator, end frame and drive end housing face
Illustration 5 g00870170
Remove the four hex socket head bolts (8). Separate the drive end housing face (9) and the rotor as an assembly from the rear housing (10) and the stator frame (11) .
Illustration 6 g00870533
Position the following items in the press: drive end housing face, rotor assembly and the tooling (12) .
In the next step, the bearing may be damaged.
Illustration 7 g00870539
Use the press to remove the rotor assembly from the drive end housing face.
Illustration 8 g00870541
Remove the spacer ring (13) .
Illustration 9 g00870558
Inspect the bearing inner race (14). Replace the bearing inner race (14), if the bearing inner race is worn, damaged, or the bearing has been replaced.
Illustration 10 g00870562
Use tooling (C) to remove the bearing race.
Illustration 11 g00870563
Epoxy putty (16) covers the lead for