RING-WEAR 4415666 - Caterpillar

Removal Procedure
Table 1
Required Tools
Qty Description
1 Adapter
1 Driver Gp
1 Three Jaw Puller Start By:
Remove the rotating rectifier assembly. Refer to the Disassembly and Assembly, "Diode Assembly - Remove and Install" section of this publication.
Remove the PMG components. Refer to the Disassembly and Assembly, "PMG Removal Procedure" section of this publication.
Remove the end bracket. Refer to Disassembly and Assembly, "End Bracket - Remove" section of this publication.Note: This procedure is a destructive procedure. The bearing will be damaged. The bearing will need to be replaced.
Route the rotating rectifier cables (3) to ensure that no damage will occur during bearing removal.
Illustration 1 g01651214
(1) Lifting device
(2) Puller three jaws
(3) Rotating rectifier cables
(4) Generator bearing
Attach a suitable lifting device (1) to the puller (2). The weight of puller (2) is approximately 27 kg (60 lb).
Assemble the puller (2) into position.Note: Ensure that the bearing retainer (6) will not interfere with the bearing removal process.
Illustration 2 g01664823
(6) Bearing retainer
Remove bearing (4). Discard the bearing.Bearing Installation Procedure
Raise the temperature of the new bearing (8) to approximately 107° C (225° F).There to two bearing heaters that are available.
Table 2
Available Bearing Heaters
Part Number Description
360-3040 110 V Heater
364-1170 220 V Heater
Illustration 3 g01651213
The bearing retainer is a one piece ring for early models. Two bearing retainer bars are used for later models.
(8) New bearing installed
Install new bearing (8). Ensure that the bearing is fully seated against the shoulder on the main rotor shaft.End By:
Install the end bracket. Refer to Disassembly and Assembly, "End Bracket - Remove" and "End Bracket - Install".
Install the PMG components. Refer to the Disassembly and Assembly, "PMG Installation Procedure" section of this publication.
Install the rotating rectifier assembly. Refer to the Disassembly and Assembly, "Diode Assembly - Remove and Install" section of this publication.