Econoline E450 V10-6.8L VIN S (1999)
6. Mark the pinion flange in relation to the drive pinion stem to ensure correct alignment during installation.
7. Using the special tool, remove the pinion flange.
Installation
1. Lubricate the pinion flange splines.
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Use Motorcraft Synthetic Rear Axle Lubricant F1TZ-19580-B or equivalent meeting Ford specification WSL-M2C192-A.
2. NOTE: Disregard the scribe marks if a new pinion flange is being installed.
Align the pinion flange with the drive pinion shaft.
3. Using the special tool, install the pinion flange.