Dana 80 Rear Axle - Differential Seals and Gaskets - Service and Repair
2. CAUTION: If the rear axle drive pinion seal becomes misaligned during installation, remove the rear axle drive pinion seal and replace it with a
new seal.
Use the Pinion Seal Replacer to install the rear axle drive pinion seal.
3. Lubricate the pinion flange splines.
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Use SAE 75W-140 Synthetic Rear Axle Lubricant F1TZ-19580-B or equivalent meeting Ford specification WS1-M2C192-A.
4. NOTE: Disregard the scribe marks if a new pinion flange is being installed.
Align the pinion flange with the drive pinion shaft.
5. With the pinion flange in place in the rear axle housing, install the pinion flange using the Companion Flange Replacer.
6. Position the new pinion nut.
