Aviator 2WD V8-4.6L DOHC (2003)
4. Using the special tools, install the rear axle pinion flange.
Item 1: Pinion Nut Installation Note
1. CAUTION: Do not under any circumstance loosen the nut to reduce preload. If it is necessary to reduce preload, install a new differential drive
pinion collapsible spacer and nut.
Tighten the nut to set the preload.
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Rotate the pinion occasionally to make sure the pinion bearings seat correctly. Take frequent pinion bearing torque preload readings by
rotating the drive pinion gear with a Nm (inch-pound) torque wrench.
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If the preload recorded prior to disassembly is lower than the specification for used bearings, tighten the nut to specification. If the preload
recorded prior to disassembly is higher than the specification for used bearings, tighten the nut to the original reading as recorded.
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Refer to the torque specification for used pinion bearings.
See: Pinion Bearing/Specifications
