Lean Correction (Rear)

NOTE: Rear side lean can be adjusted approximately 10 mm (3/8 in.) by installing shim D7TZ-5742-A on the low side. A vehicle that is low at the rear can be raised by installing shims at both sides.

On Super Duty F250 and F350, maximum lean for rear of vehicle is 19 mm (.75 inch). This is the side-to-side difference. On Motorhome, maximum lean for rear of vehicle is 20 mm (.78 inch). This is the side-to-side difference.
Raise and support the vehicle frame until the weight is off the rear springs but with the tires still touching the floor.
Support the axle with a jack.
Remove and discard the four nuts and two U-bolts to allow the rear axle to separate from the rear spring. See Fig 1 .

Fig 1: Identifying Rear U-Bolts (Except Motorhome)
Courtesy of FORD MOTOR CO.
Turn the correction so that the recess is facing upward. Position the shim so the tie bolt through the spring leaves is in the shim recess, the stud on the bottom of the shim is in the spring seat recess, and the shim is aligned with the rear spring. See Fig 2

Fig 2: Inserting Lean Correction Shim (Except Motorhome
Courtesy of FORD MOTOR CO.
Install 2 NEW U-bolts and 4 NEW nuts. Tighten to specification. See Fig 3 .

Fig 3: Tightening U-Bolt Nuts (Except Motorhome)
Courtesy of FORD MOTOR CO.