ELECTRONICS GP 3742549 - Caterpillar

Removal Procedure
Start By:
Remove terminal box.
Illustration 1 g03889287
Remove cable strap (1). Position harness assembly (2) through the generator housing and out of the way.
Illustration 2 g03889518
Remove bolts (5) and spacer (6). Remove bolts (3) and mounting ring (4).
Illustration 3 g03889545
Remove rotor (7).
Illustration 4 g03889801
Illustration 5 g03890521
Use suitable tooling to remove hub (8) from the shaft. Take caution to ensure that keyway (9) is not lost or damaged.
Illustration 6 g03890580
Make an alignment mark on coil (11) at the location of varistor (10) for assembly purposes.
Illustration 7 g03890600
Disconnect harness assembly (12).
Illustration 8 g03890613
Remove bolts (16). Remove nuts (19) and disconnect harness assembly (18). Remove nuts (13) and disconnect harness assemblies (15). Remove rectifier assembly (14) carefully feeding harness assemblies (15) through grommets (17). Replace grommets (17) if grommets (17) appear worn or damaged.
Illustration 9 g03890669
Remove bolts (20). Remove exciter stator (21).
Illustration 10 g03890686
Remove exciter rotor (22). Installation Procedure
Install exciter rotor (22) and exciter stator (21) in the reverse order of removal.