Volkswagen Touran Service Manual: Vibration
Vibration, Causes for Vibration
| There are many causes for vibration. Vibration can also be
caused by tire wear, among other things. Tire wear caused by
driving does not always develop evenly over the entire tread.
Due to this, a slight imbalance develops which disturbs the
smoothness of the formerly accurately balanced wheel. |
| This slight imbalance cannot yet be felt in the steering
wheel, but it is present. It increases the tire wear and
consequently reduces the service life of the tire. |
| In order to guarantee over the entire service life of a tire
a |
| it is recommended that wheels/tires be balanced at least two
times within the tire's service life. |
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Vibration, Road Test, Performing Before Balancing
| If a vehicle comes to the workshop with the complaint
"vibration", a road test must be performed before balancing the
wheels. |
| That way, information about the type of vibration can be
obtained. |
| Observe at which speed range the disturbance takes place. |
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Raise the vehicle on the platform immediately after the road
test. |
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Mark the component location on the tire. |
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Component Location of Tire |
Identification with ... |
| Left front tire |
LF |
| Right front tire |
RF |
| Left rear tire |
LR |
| Right rear tire |
RR |
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Remove the wheels from the vehicle. |
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Vibration, Vibration Control System
| Expanded functions can be performed using Hunter RFT33VAG
Road Force Touch Wheel Balancer -VAS6230B4- in addition to the
previously known balancers. |
| A special characteristic of this system is testing the
radial force of wheel/tire during rolling. |
| For this purpose, a roller presses a force of approximately
635 kg (0.7 ton) against the wheel. This simulates the tire
contact force against the street surface while driving. |
| Tire contact forces fluctuate due to radial- and lateral
run-out and differing rigidity in the tires. |
| The Hunter RFT33VAG Road Force Touch Wheel Balancer
-VAS6230B4- detects and stores the position of the maximum
measured radial force in the tires. After that, the position of
smallest dimension between rim flange and disc wheel center is
measured. |
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Test Conditions Before and During the Road Test
Check all suspension components on front and rear axle for
damage.
...
Flat Spots, Correcting
Flat spots cannot be removed from tires with workshop
equipment.
Such flat spots can be &qu ...
Other materials:
Volkswagen Touran Owners Manual. Function and operation
Fig. 157 In centre console: button for
setting the adaptive chassis control
First read and observe the introductory information
and safety warnings The adaptive chassis control constantly adjusts the suspension
characteristics while driving to the road surface and the current driving situa ...
Volkswagen Touran Owners Manual. Introduction
This chapter contains information on the following subjects:
→ Components of the tyre monitor display
→ Tyre monitor indicator lamp
→ Tyre monitor display
Additional information and warnings:
Volkswagen information system
Transporting
...
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Corrective Action When Vehicle Pulls to One Side
Flat Spots, Correcting