Pinion Flange & Oil Seal: Installation
- Inspect pinion flange oil seal surface, drive splines, flange ears and bearing contact surface. Replace pinion flange if damaged. Lubricate inside diameter of seal. Place pinion seal in housing bore.
- Using Seal Installer (J-23911 for 7 1/2" and 7 5/8" ring gears, J-23836 for 8 1/2" ring gear or J-22388 for 9 1/2" ring gear), install pinion seal into bore until seal is flush with outer edge of housing. Ensure oil seal is square in housing.
- Install a non-hardening sealer to pinion splines or internal splines of pinion flange. Install flange on pinion shaft, aligning scribe marks made previously. If required, use only soft-faced (rubber) hammer to tap flange onto pinion.
- Install washer and self-locking nut to pinion, and snug tighten, taking note of scribe marks and number of exposed threads. Measure pinion preload. Using companion flange holder and remover, and socket/torque wrench assembly, tighten self-locking nut in small increments. Measure pinion preload until preload exceeds original figure by 3-5 INCH lbs. (.3-.6 N.m). If preload exceeds specification, remove pinion and replace collapsible sleeve. Install drive shaft. Add gear oil as needed.