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:
EU Tire Label, Short Overview
Starting on 11/1/2012, tire manufacturers must comply with the new
EU Regulation (EG) 1222/2009 (Tire Labeling Regulation).
The Tire Labeling Regulation requires that information pertaining to
rolling resistance (fuel efficiency), wet grip and external rolling
noise b ...
Battery Tester Charger Kit -GRX3000VAS- General Description
Only Volkswagen approved chargers may be used to charge
batteries in Volkswagen vehicles. Only the Battery Tester
Charger Kit -GRX3000VAS- charger is used in the USA and Canada.
The Battery Tester Charger Kit -GRX3000VAS- battery charger
...
Evacuating and Charging Valve with Schrader Valve
Special tools and workshop equipment
required
Torque Wrench 1783 - 2-10Nm -VAG1783- with Torque Wrench
1783 - 1/4" Drive Ratchet -VAS6234-
WARNING
There is a dan ...
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Vibration, Road Test, Performing Before Balancing
Flat Spots, Correcting