Drive Pinion Flange: Installation

WARNING: This page is about a different car, the 2019 Ford F-550 Super Duty, 2019 Ford F-450 Super Duty, 2019 Ford F-350 Super Duty, and 2019 Ford F-250 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.

If necessary, install a new drive pinion seal. Refer to: Drive Pinion Seal .
Lubricate the drive pinion flange mating surfaces with grease.
Material: Motorcraft® Premium Long-Life Grease / XG-1-E1 (ESA-M1C75-B)

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NOTE: Make sure drive pinion flange and drive pinion stem are phased correctly using previously applied mark.

Using the special tools, install the pinion flange. Use Special Service Tool: 205-435 Installer, Differential Yoke., 205-437 Installer, Drive Nut, Yoke., 205-936 Pinion, Flange Installer.

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NOTE: Under no circumstances is the pinion nut to be backed off to reduce drive pinion bearing preload. If reduced drive pinion bearing preload is required, a new drive pinion collapsible spacer and pinion nut must be installed or damage to the component may occur.

NOTE: When installing the drive pinion flange and pinion nut with no differential carrier installed, the drag torque (torque to turn) should be 2 to 3 Nm (16-29 in-lbs).

NOTE: Refer to the rotational torque previously recorded with the Nm (lb-in) torque wrench. Tighten the pinion nut in small increments until it is within 0.3 Nm (3 lb-in) of the reference measurement. If 0.3 Nm (3 lb-in) is exceeded, then the collapsible spacer will be damaged and a new collapsible spacer will be required.

Using the special tool to hold the pinion flange, install the new pinion nut. Use Special Service Tool: 205-126 (T78P-4851-A) Holding Fixture, Drive Pinion Flange.

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Stake the pinion nut.

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If equipped with a 4 bolt flange pinion flange, connect the driveshaft.
1. Align the index-mark on the driveshaft to the rear axle pinion flange.
2. Install the new driveshaft-to-pinion flange bolts.
  Torque: 76 lb.ft (103 Nm)
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NOTE: Rear straps shown, front straps similar.

If equipped with a strap style pinion flange, install the new U-joint strap bolts and the new straps.

Torque: 46 lb.ft (63 Nm)

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Check the differential fluid level. Refer to: Differential Fluid Level Check .
Install the rear axle shaft. Refer to: Axle Shaft .