Drive Pinion Preload Check

1. Assemble preload shims and slinger, if applicable, onto pinion, then install pinion gear into carrier housing.
2. Install outer pinion bearing and oil slinger, if applicable.
3. Install end yoke or flange, washer and new pinion nut on pinion shaft and torque to specifications.
4. Place an inch-pound torque wrench on pinion nut and check pinion rotational torque. Rotational torque should be 20-40 inch lbs.
5. To increase preload, remove shims. To decrease preload, add shims.
6. With drive pinion at correct preload, remove pinion nut, washer and end yoke or flange.
7. Coat drive pinion oil seal with suitable hypoid gear lubricant or equivalent, then install drive pinion oil seal using suitable oil seal replacer. After installation, ensure garter spring did not pop out. If garter spring pops out, remove and replace seal.
8. Install end yoke or flange with a suitable pinion flange replacer, then the washer and nut and torque to specifications.