F 250 4WD Super Duty V10-6.8L VIN S (2001)
18. If the pinion bearing preload is within specification, and the pinion position shim has changed, change the drive pinion bearing preload shims by
the same amount.
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The direction arrow pointing toward the pinion flange indicates that by removing the drive pinion position shim, the distance from the
centerline of the tubes to the pinion back face increases, giving a plus (+) reading. The drive pinion bearing preload shim pack does not affect
the pinion depth setting. However, if the pinion position is changed, the pinion preload will change and may require adjustment to bring the
torque-to-rotate within specification. Arrows on the ring gear illustrate the method to increase or decrease backlash and differential bearing
preload.
19. With the drive pinion at the correct preload as determined earlier in this procedure, remove and discard the lock nut and the washer.
20. Using the special tool, remove the pinion flange.
21. Coat the pinion seal rubber lips with lubricant.
22. Using the special tool, install the pinion seal.
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After installation, verify that the garter spring did not pop out of the seal. If the garter spring popped out, install a new pinion seal.
23. Coat the inside of the pinion flange with a small amount of lubricant.
