Some 2009-2012 Ford F-150 vehicles equipped with a two-piece driveshaft and built before 7-30-12 may exhibit a rear driveshaft slip/bump concern on light to moderate acceleration from a stop or when coming to a stop with light braking.
- Place the truck on a hoist and index-mark the driveshaft flange and pinion flange to maintain alignment during installation. NOTE: It is not necessary to remove the entire driveshaft for this repair.
- Mark a straight line down the slip yoke and driveshaft in line with the front slip yoke boot clamp head, to help align for reassembly.
- Remove the front boot clamp only from the center slip yoke and discard.
- Remove the four driveshaft flange bolts.
- Using a suitable tool disconnect the driveshaft flange from the flange pilot.
- Remove the rear portion of the driveshaft only, leaving the slip yoke boot on the rear shaft.
- Using a dry, clean, lint-free towel, thoroughly clean old grease from the splines on the slip yoke only.
- If the vehicle features four-wheel-drive, perform the following procedure. If not, proceed to Step 9.
- Loosen the center bearing bolts and slide the center bearing fully rearward in the slotted mounting holes.
- Torque the center bearing bolts to 35 ft.-lbs.
- Apply an even coat of new grease from the kit to the internal splines of the slip yoke only.
- Position the new slip yoke boot clamp from the kit over the boot on the spline portion of the driveshaft. Leave the clamp loose at this point.
- Install the rear portion of the driveshaft onto the slip yoke using the previously made alignment marks.
- Apply Threadlock and sealer to the original driveshaft flange bolts.
- Install the four driveshaft flange bolts using the match marks, and tighten to 76 ft.-lbs.
- Position the front slip yoke clamp head in-line with the alignment marks and crimp the slip yoke boot clamp using Rotunda tool 205-343.
The slip joint repair kit is available as P/N 9L3Z-4W602-A.