TSB's

Vibrating Titan

Owners of 2004-2012 Nissan Titan vehicles may complain about a vibration felt in the steering wheel and/or floor/seats when driving at a speed of approximately 25 mph and 40 mph only.

This may be due to a driveline vibration and may require installing shims between the leaf springs and rear axle spring seats in order to correct the pinion angle.

NOTE: This bulletin applies to vibrations occurring between approximately 25 and 40 mph only. Do not perform the inspection of wheel and tire RFV (road force variation) for this particular concern.

Test drive the vehicle. If the vibration is felt at 25 to 40 mph, this bulletin applies. If the vibration is felt at 50-plus mph (and within local speed limits), this bulletin does not apply.

  1. Raise the vehicle on a lift.
  2. Place tall support stands under the rear axle next to the spring pads.
  3. One at a time, replace the four rear spring clip U-bolt nuts on each end of the axle housings with new nuts. At this time, install the new nuts finger-tight only.
  4. Using a pry bar, spread the rear spring pad from the leaf springs to make room for shim installation.
  5. Insert 0.5 degree axle shims between the leaf springs and rear spring pad on the driver and passenger sides. Make sure that the shims are installed with the thinner tapered end of the shim pointing toward the front of the vehicle. Make sure that the cutout part of the shim is pushed all the way against the leaf spring center bolt.
  6. Tighten the new nuts in a crisscross pattern to a final value of 89 ft.-lbs.
  7. Remove the stands and lower the vehicle to the ground.
  8. Test drive to verify that the vibration issue has been resolved.
  9. If the vibration is still present, replace both 0.5 degree shims with 1.0 degree shims (both sides).
  10. Test drive. If the vibration is still present, replace the 1.0 degree shims with 1.5 degree shims and test drive.
  11. NOTE: EACH TIME YOU CHANGE SHIMS, REPLACE THE NUTS WITH NEW NUTS.

PART                                     PART NUMBER                        QUANTITY

0.5 degree shim kit………….43036-7B805…………………………2

1 degree shim kit……………43036-7B810…………………………2

1.5 degree shim kit………….43036-7B815…………………………2

U-bolt nuts…………………..08911-6441A…………………………8

With the rear axle supported, and new U-bolt nuts installed finger-tight, pry the rear spring pad from the leaf springs to allow room for shim insertion.
<p>With the rear axle supported, and new U-bolt nuts installed finger-tight, pry the rear spring pad from the leaf springs to allow room for shim insertion.</p>

Pinion angle shims are available in three degree increments. Note that the thinner tapered end must be installed aiming towards the front of the vehicle.
<p>Pinion angle shims are available in three degree increments. Note that the thinner tapered end must be installed aiming towards the front of the vehicle.</p>

Insert the shim front the front, making sure that the shim slot is fully engaged against the spring center bolt.
<p>Insert the shim front the front, making sure that the shim slot is fully engaged against the spring center bolt.</p>

 

Tighten the new U-bolt nuts in a crisscross pattern to a final value of 89 ft.-lbs. If it is necessary to change shims in the effort to eliminate the driveline vibration, install new nuts each time.
<p>Tighten the new U-bolt nuts in a crisscross pattern to a final value of 89 ft.-lbs. If it is necessary to change shims in the effort to eliminate the driveline vibration, install new nuts each time.</p>

Tags: Nissan 
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