Drive Pinion Flange and Drive Pinion Seal: Installation

WARNING: This page is about a different car, the 2014 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.

Lubricate the new drive pinion seal with grease.
Using the Drive Pinion Oil Seal Installer, install a new drive pinion seal.

Fig 1: Installing Drive Pinion Seal Using Drive Pinion Oil Seal Installer
Courtesy of FORD MOTOR CO.
Lubricate the pinion flange splines with axle lubricant.
NOTE: Disregard the scribe marks if a new pinion flange is being installed.

Align the pinion flange with the drive pinion shaft.

Fig 2: Aligning Pinion Flange With Drive Pinion Shaft
Courtesy of FORD MOTOR CO.
Using the Drive Pinion Flange Installer, install the pinion flange.

Fig 3: Installing Pinion Flange
Courtesy of FORD MOTOR CO.

NOTE: Install a new pinion nut with the same color as the original if not replacing the collapsible spacer. If a new collapsible spacer is installed, install the nut in the kit, as indicated in the chart below, or damage to the component may occur.

Position the new pinion nut.

DRIVE PINION NUT DESCRIPTION

Part Number	Color Description	Application
19G405	Green	Axles built before 7/16/07
4320	White	Axles built after 7/16/07
4C121	White	Kit with spacer for all 9.75-in axles

Fig 4: Identifying Pinion Nut

Courtesy of FORD MOTOR CO.

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: Remove the Drive Pinion Flange Holding Fixture while taking drive pinion bearing preload readings with the Nm (lb-in) torque wrench.

Using the Drive Pinion Flange Holding Fixture to hold the pinion flange, tighten the pinion nut.
- Rotate the drive pinion occasionally to make sure the drive pinion bearings are seating correctly.
- Install a Nm (lb-in) torque wrench on the pinion nut.
- Rotating the drive pinion through several revolutions, take frequent drive pinion bearing preload readings until the original recorded drive pinion bearing preload reading is obtained.
- If the original recorded drive pinion bearing preload is lower than specification, tighten to the appropriate specification for used drive pinion bearings. If the drive pinion bearing preload is higher than specification, tighten the pinion nut to the original reading as recorded. For additional information, refer to the SPECIFICATION portion.
  
  Fig 5: Driving Pinion Flange Holding Fixture To Pinion Flange
  Courtesy of FORD MOTOR CO.
Position the driveshaft and align the index mark on the pinion flange.

Fig 6: Aligning Index Mark On Pinion Flange
Courtesy of FORD MOTOR CO.
NOTE: The driveshaft centering socket yoke fits tightly on the pinion flange pilot. To make sure that the driveshaft centering socket yoke seats squarely on the pinion flange, tighten the driveshaft flange bolts evenly in a cross pattern.

NOTE: If new bolts are not available, coat the threads of the original driveshaft flange bolts with threadlock and sealer.

Install the 4 new driveshaft flange bolts.
- Tighten to 103 Nm (76 lb-ft).
Install the rear brake disc. For additional information, refer to REAR DISC BRAKE .