Volkswagen Golf Service & Repair Manual: Vibration control system
| Using the vibration control system -VAS 6230 A- you can
perform more functions than just stationary balancing. |
| A special feature of this system is the testing of the
radial force of the wheel and tyre while rolling. |
| A roller presses against the wheel with a force of about 635
kg. This simulates the vertical tyre force against the road
surface during travel. |
| Radial and lateral run-out in the wheel and tyre and
differences in the stiffness of the tyre cause the vertical
force of the wheel to vary. |
| The -VAS 6230 A- detects and stores the position of the
maximum measured radial force in the tyre. Then the position of
the smallest distance between the wheel rim flange and the
centre of the rim is measured. |
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Note
Before working with a finish balancer, the mechanic needs to
have been instructed by the manufacturer of the balancer.
...
Radial and lateral run-out occur when the wheel and tyre do
not run absolutely true.
For technical reasons, 100% true running is not possible.
...
Other materials:
Nuts and bolts
Loosen and tighten bolts and securing nuts for covers and
housings diagonally.
Avoid canting particularly sensitive parts such as comtrol
motor with control unit. Loosen and tighten them diagonally in
stages.
...
Assembly overview - rear side windows
1 -
Rear side window
q
Removing rear side window
→ Chapter
2 -
Seal
Integral part of rear side window
3 -
PUR adhesive sealant
Cross section of bead: height = 10&nbs ...
Wheel change, protecting wheel centring seat against corrosion
Applies to alloy and steel wheels
When changing a wheel, wheel centring seat should be waxed
using wax spray to prevent corrosion between wheel centring seat
and wheel rim
→ Electronic Parts Catalogue “ETKA”.
...
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Balancing wheel, balancing wheel with finish balancer
Checking radial and lateral runout of wheels and tyres, tolerances