Wheels/Tires/Driveline - Vibrations In Vehicle

Wheels/Tires/Driveline - Vibrations In Vehicle

Vibrations in vehicle

Topic number LI40.10-N-048690

Version 1

Design group 40.10 Wheels, tires

Date 01-29-2010

Validity Model 906

Reason for change

Reason for block

Complaint:

2010 Mercedes Benz Truck Sprinter 3500 Cab (906.153) V6-3.0L DSL Turbo (642.898)

Page 92

Vibrations in vehicle.

The vibrations are vehicle speed-dependent and occur as of approx. 40MPH.

Note:

Speed-dependent complaints also occur when the clutch is disengaged and in selector lever position N.

Cause:

The vibrations can be caused by the following:

1) Radial force variations and/or imbalance in the front wheels are transferred to the vehicle in the form of vibrations.

2) The propeller shaft is damaged or the propeller shaft centre support bearing is installed under stress.

Note:

Modifications, bodies and tire replacement affect the vehicle characteristics and can cause a complaint.

Tires not recommended by Mercedes-Benz can aggravate this problem.

Remedy:

The complaint must be reproduced by means of a test drive.

If it is not possible to reproduce the complaint, contact the customer. Otherwise, process the following points one after the other.

1) Check wheels for damage and tire inflation pressure. Replace any damaged, unusable wheels. Correct the tire inflation pressure. If the deviations

are greater than 0.5 bar, correct them and perform a test drive.

2) Check radial force variation (RFV) of the front wheels/tires on a suitable balance machine. Match mount the wheels/tires if necessary.

3) Balance wheels on wheel balancing machine.

4) Mount the wheels. Ensure that they are seated centrally and tighten the wheel studs/wheel nuts finger-tight in a crosswise pattern, then tighten to

the required tightening torque.

5) Perform test drive. If the problem is still present, continue with step 6).

6) Check the propeller shaft (GW) for external damage.

7) Check whether the propeller shaft centre support bearing is seated under stress.

8) Perform test drive. If the complaint is still present, contact the contact person at the national representative office.

Note:

2010 Mercedes Benz Truck Sprinter 3500 Cab (906.153) V6-3.0L DSL Turbo (642.898)

Page 93

The ball joint of the propeller shaft is designed to develop an engagement point after a short break-in period (see attachment)