Grand Marquis V8-4.6L SOHC VIN W (2005)
15. From inside the differential housing, install the drive pinion assembly (drive pinion, shims, bearing and the collapsible spacer) into the carrier
bore.
16. Lubricate the pinion flange splines with rear axle lubricant.
17. NOTE: Disregard the index marks if installing a new pinion flange.
Position the pinion flange.
18. Using the special tool, install the pinion flange.
19. Position the new nut.
20. CAUTION: Do not, under any circumstance, loosen the nut to reduce preload. If it is necessary to reduce preload, install a new collapsible spacer
and nut.