Worm Gear Bearing Preload
1. Before installing oil seal, coat oil seal contacting face with gear fluid. Drive oil seal into place.
2. Place worm gear assembly together with worm gear bearing into gear housing.
3. Adjust worm gear bearing preload using the tools shown. Worm gear bearing preload: 0.69 - 0.88 Nm (6.1 - 7.8 inch lbs.)
CAUTION: Always adjust worm gear bearing preload by turning adjusting plug in clockwise direction.
NOTE: Before measuring preload, rotate worm gear a few turns in both directions to seat worm gear bearing.
4. Apply suitable sealant to inner surface of lock nut.
5. Tighten lock nut to 226 - 255 Nm (166 - 188 ft. lbs.). When tightening lock nut, use the chart shown to determine the proper reading of torque. (Length of torque wrench vs. setting or reading of torque).
6. After tightening lock nut, check worm gear bearing preload to make sure it is within specification.