IDLER ASSEM. 1S2311 - Caterpillar

SR4B
All ball bearings should be cleaned. The cavity in the bracket should be repacked with 2S-3230 Grease. Pack the ball bearings (one-third to one-half of the volume of the cavity).
Use an induction heater to heat the ball bearings to 107 °C (224.6 °F) for 10 minutes in order to install either of the following bearings: ball bearings that are new and ball bearings that have been inspected. Mount the bearings on the shaft. To reinstall the hub, heat the hub to 400 °C (752.0 °F) for 3 hours. Mount the hub to the shaft.
Ensure that the tube of the grease gun is filled with grease.
Remove the bracket drain plug and operate the generator for 1 hour. This procedure will allow the grease to expand. The expanding grease will force the excess grease from the cavity. When the excess grease is forced from the cavity, the internal pressure will be reduced. The generator should continue to operate until the grease stops purging.
Stop the engine. Install the bracket drain plug. Wipe off the excess grease.
For greasing intervals, follow the recommendations on the lubrication plate (if equipped) or refer to Maintenance Schedule, "Generator Bearing - Lubricate". Whenever the bearings are greased, repeat Step 1. DO NOT MIX GREASES.