PLATE 5061784 - Caterpillar

Disassembly Procedure
Start By:
Remove the alternator. Refer to Disassembly and Assembly, "Alternator - Remove" for the machine that is being serviced.Note: The Disassembly and Assembly that follows is of a K1, 12V 7T-2876 Charging Alternator Gp. The other alternators are similar.
Illustration 1 g03228038
(1) Regulator (2) Capacitor lead (3) Capacitor
Remove the two screws and regulator (1) .
Disconnect capacitor lead (2) from the back of the alternator. Remove the screw and capacitor (3) .
Illustration 2 g03228056
(4) Pulley (5) Fan
Remove the pulley nut, washer, pulley (4), fan (5), and the key from the rotor shaft.
Illustration 3 g03228057
(6) Screws
Mark the front and rear frame assemblies for proper assembly. Remove four screws (6) (one has a nut on it on the back of the alternator).
Separate the front frame and rotor assembly from the rear frame and stator assembly. Watch for the wave washer, at the back of the rear frame assembly, to fall out.
Illustration 4 g03228058
(7) Screws (8) Rotor
Remove four screws (7), and rotor (8) from the front frame.
Illustration 5 g03228059
(9) Bearing cover (10) Spacer (11) Front bearing
Remove spacer (10), and front bearing (11), with a suitable puller. Remove bearing cover (9) from the rotor (8) .
Illustration 6 g03228076
(12) Rear bearing (13) Slip ring
Remove the rear bearing (12) with a suitable puller. Unsolder both rotor winding leads from slip ring (13). Remove slip ring (13) with a suitable puller.
Illustration 7 g03228080
(14) terminal nuts (15) terminal nuts (16) terminal nuts
Remove terminal nuts (14), (15), and (16). Remove all of the washers and insulators.
Illustration 8 g03228097
(17) Screws
Remove three screws (17). Remove the stator and rectifier assembly from the rear frame. Remove the remaining insulators from the terminal studs.
Illustration 9 g03228116
(18) Rectifier (19) Stator
Unsolder the three stator leads and separate rectifier (18) from stator (19) .
Illustration 10 g03228119
K1 Alternator (1) Regulator (4) Pulley (5) Fan (6) Screws (8) Rotor (9) Bearing cover (11) Front bearing (12) Rear bearing (13) Slip ring (18) Rectifier (19) Stator