Volkswagen Touran Service Manual: Wheel, Balancing, Tire and Wheel Radial and Lateral Run-Out, Checking
| Before beginning balancing, the following requirements must
be fulfilled. |
| The tire pressure must be OK. |
| The tire profile must not be worn on one side. The tire
profile must be at least 4 mm. |
| The tires must not have any damage such as cuts, holes,
foreign bodies, etc. |
| The suspension and steering, including the shock absorber,
must be in perfect condition. |
| Test drive performed. Refer to
→ Chapter "Vibration, Road Test, Performing Before Balancing". |
| Radial and lateral run-out occur when the wheel and tire are
not running precisely true. |
| For technical reasons, 100% true running is not possible. |
| Therefore the manufacturers of these components allow a
precisely specified tolerance. |
| Mounting the tire in a unfavorable position on the wheel can
be the cause for exceeding the maximum allowed tolerance for
wheel with tire. |
| |
Preload the Tire Dial Gauge approximately 2 mm. |
|
|
|
| |
Position the Tire Dial Gauge on the side wall of the tire. |
| |
Note the smallest and the largest dial readings. |
 Note
| If the difference is greater than 1.3 mm, the lateral
run-out is too great. |
| In this case the radial run-out can be reduced by matched
mounting. Refer to
→ Chapter "Tires and Rims, Matching". |
| Peak values on the Tire Dial Gauge due to small
irregularities in the rubber may be disregarded. |
| |
Preload the Tire Dial Gauge approximately 2 mm. |
|
|
|
| |
Position the Tire Dial Gauge on the tread of the tire. |
| |
Note the smallest and the largest dial readings. |
Note
| If the difference is greater than 1 mm, the radial run-out
is too great. |
| In this case the radial run-out can be reduced by matched
mounting. Refer to
→ Chapter "Tires and Rims, Matching". |
| The table shows the maximum permissible tolerance values for
the wheel with mounted tire. |
| Tolerances for Radial and Lateral
Run-Out of Rim With Tire |
|
|
|
|
Rim With Tire |
Radial
Run-Out (mm) |
Lateral
Run-Out (mm) |
|
Passenger Vehicle |
0.9 |
1.1
(1.3 near the lettering) |
Before beginning balancing, the following requirements must
be fulfilled.
The tire pressure must be OK.
The tire p ...
Mount the rim on the Balancing Machine.
Use the Wheel Centering System Adapter -VAS5271-.
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Wheel, Balancing with Fine Balancing Machine (Finish Balancer)
Wheel Balancing, Rim Radial and Lateral Run-Out, Checking