Caterpillar 558-2101 5582101 Grader Circle Drive Pinion Gear
Here’s some pics of a new replacement pinion gear for a Caterpillar Grader. The pinion mounts to the splined shaft of the circle drive motor. The part number for this pinion is 558-2101. The 5582101 pinions are normally extremely worn which require replacement every time we get a grader circle in with the drive motor [...]