Toyota
Dodge Durango
 Service Manual
Differential and Driveline » Propeller shafts » Diagnosis and testing
Vibration

Tires that are out-of-round, or wheels that are unbalanced, will cause a low frequency vibration.

Refer to Group 22, Tires and Wheels, for additional information.

Brake drums that are unbalanced will cause a harsh, low frequency vibration. Refer to Group 5, Brakes, for additional information.

Driveline vibration can also result from loose or damaged engine mounts. Refer to Group 9, Engines, for additional information.

Propeller shaft vibration increases as the vehicle speed is increased. A vibration that occurs within a specific speed range is not usually caused by a propeller shaft being unbalanced. Defective universal joints, or an incorrect propeller shaft angle, are usually the cause of such a vibration.

DRIVELINE VIBRATION

Drive Condition Possible Cause Correction
Propeller Shaft Noise 1) Undercoating or other foreign material on shaft.

2) Loose U-joint clamp screws.

3) Loose or bent U-joint yoke or excessive runout.

4) Incorrect driveline angularity.

5) Rear spring center bolt not in seat.

6) Worn U-joint bearings.

7) Propeller shaft damaged or out of balance.

8) Broken rear spring.

9) Excessive runout or unbalanced condition.

10) Excessive drive pinion gear shaft runout.

11) Excessive axle yoke deflection.

12) Excessive transfer case runout.

1) Clean exterior of shaft and wash with solvent.

2) Install new clamps and screws and tighten to proper torque.

3) Install new yoke.

4) Measure and correct driveline angles.

5) Loosen spring u-bolts and seat center bolt.

6) Install new U-joint.

7) Installl new propeller shaft.

8) Install new rear spring.

9) Re-index propeller shaft, test, and evaluate.

10) Re-index propeller shaft and evaluate.

11) Inspect and replace yoke if necessary.

12) Inspect and repair as necessary.

Universal Joint Noise 1) Loose U-joint clamp screws.

2) Lack of lubrication.

1) Install new clamps and screws and tighten to proper torque.

2) Replace as U-joints as necessary.

    More about «Diagnosis and testing»:

    Vibration

    Unbalance

    Runout

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