Bearing Preload Adjustment

Measurement and adjustment of the tapered roller bearings is necessary if a housing, countershaft cluster gear (7113), mainshaft or input shaft (7017) has been replaced or if a tapered roller bearing per shaft has been replaced. The mainshaft, input shaft, and countershaft cluster gear should be adjusted to provide a preload of 0.02-0.11 mm (0.00079-0.00434 inch). After adjusting the two shafts, each should be rotated a few times to center the rollers in the bearings involved.