Drive Pinion Flange: Installation
WARNING: This page is about a different car, the 2004 Ford RV Cutaway, 2004 Ford Econoline, 2004 Ford E450 Super Duty, and 2004 Ford Cutaway. However, it is still accessible from the selected car via links, so may be relevant.
- Lubricate the pinion flange splines with rear axle lubricant.
- Align the pinion flange with the drive pinion shaft.
- Using the special tool, install the pinion flange.
- Position the new pinion nut.
- Using the special tool to hold the pinion flange, tighten the pinion nut.
- Rotate the pinion occasionally to make sure the bearings are seating correctly.
- Install a Nm (inch-pound) torque wrench on the pinion nut.
- Rotating the pinion through several revolutions, take frequent bearing torque preload readings until the original recorded preload reading is obtained.
- If the original recorded preload is less than specification, tighten to the appropriate specification for used bearings. If the preload is greater than specification, tighten the nut to the original reading as recorded. For additional information, refer to TORQUE SPECIFICATIONS .
- Position the driveshaft, and align the marks on the pinion flange.
- Install the new bolts.
- Install the rear disc brake calipers. For additional information, refer to DISC & DRUM .
NOTE:
Disregard the scribe marks if a new pinion flange is being installed.
CAUTION:
Under no circumstances is the pinion nut to be backed off to reduce preload. If reduced preload is required, a new collapsible spacer and pinion nut must be installed.
CAUTION:
Remove the special tool while taking readings with the Nm (inch-pound) torque wrench.
CAUTION:
The driveshaft centering socket yoke fits tightly on the rear axle pinion flange pilot. To ensure that the yoke seats squarely on the flange, tighten the bolts evenly in a cross pattern as shown.