Volkswagen Polo Service & Repair Manual: 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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If a vehicle comes to the workshop with the complaint
“vibration”, a road test must be performed before balancing the
wheels.
That wa ...
Flat spots cannot be removed from tires with workshop
equipment.
Such flat spots can be "driven out" only by driving the car
un ...
Other materials:
Warranty Test, Performing
WARNING
Do not check or charge batteries that have a visual
indicator that is bright yellow. Jump starting must not
be used!
There is a risk of explosion during testing,
cha ...
Changing bulbs in the front bumper
Fig. 182 In the front bumper,
right-hand side: removing the cover and headlight
Fig. 183 In the front bumper,
right-hand side: removing the cover and headlight
First read and observe the introductory
information and safety warnings
The actions should onl ...
Increasing Temperature Due To Low Tire Pressure
The diagram shows the temperature behavior of a tire at
speed of 180 km/h (111.84 mph).
A -
Normal range: when maintaining the specified tire pressure,
the temperature remains stable.
B -
...
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Vibration, Road Test, Performing Before Balancing
Flat Spots, Correcting