Volkswagen Polo Service & Repair 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. |
– |
Rotate the wheel slowly. |
– |
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. |
– |
Rotate the wheel slowly. |
– |
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-.
–
Preload th ...
Other materials:
Belt height adjuster
Fig. 54 Next to the front seats: belt
height adjuster
First read and observe the introductory information
and safety warnings
The seat belt height adjusters for the front seats can be used to adjust the
position of the seat belt on the shoulder so that it can be fastened properly:
Pus ...
Fiber-Optic Cable, Disconnecting from Wiring Harness Connector
Removing
–
Unplug connector for fiber optic cable from appropriate
control unit.
–
Release the locking mechanism in the fiber-optic cable
connector -1- by pushing on it.
...
EU Tire Label, Goals
To reduce fuel usage
To improve road safety
To reduce traffic noise
The EU Tire Label Provides the End-User with Information
About the Tire's Most Important Properties. However, it Does ...
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