BLOCK 1734793 - Caterpillar

Bearing Replacement
Refer to the appropriate publication for each specific generator for bearing replacement procedures.Replace both bearings of a two-bearing generator.Replace any bearing wear sleeves and lip seals when the bearings are replaced.Most replacement bearings are pre-lubricated. The pre-lubricated bearings do not require more grease at time of replacement. If the replacement bearing is shipped dry, the bearing is to be 50% packed with grease during installation.For bearings that require re-lubrication, the old grease must be removed from the bearing bracket cavity.Note: The bearing bracket cavity is the space between the bearing and the bearing bracket wall.
Illustration 8 g06110034
Bearing bracket cavity packed with grease
The bearing bracket cavity must be packed with new grease from one-third to one-half full. Refer to Illustration 8 for an example. The grease tubing must be packed with new grease.Note: Generator set alignment is required after the bearings are replaced.