Pinion bearing preload adjustment
WARNING: This page is about a different car, the 2010 Ford F550 Super Duty and 2010 Ford F450 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.
- 7.NOTE: Also refer to the following illustrations.
Adjust the pinion bearing preload by installing a new pinion bearing preload spacer.
- To increase the preload, install a thinner spacer. To decrease the preload, install a thicker spacer.
- The pinion bearing preload spacers are available in sizes from 27.26 to 28.00 mm (1.0270 to 1.1063 in).
- Always measure the new spacer before installing it.
- On a flat surface, sand the next thicker size spacer with an emery cloth to the required thickness to obtain a closer adjustment. Thoroughly wash the spacer to remove the emery cuttings before installation.
- A 0.0254 mm (0.001 in) change in the spacer thickness will change the torque rate approximately 3.3894 Nm (30 lb-in).
- Repeat Measuring pinion bearing preload torque and Pinion bearing preload adjustment in this procedure until the rotational torque is within specifications.