Volkswagen Golf / Golf GTI / Golf Variant. Manual — part 882
– Tension the wheel with the tire on the balancing machine.
Note
♦
To mount wheel on wheel balancer, use for example Wheel
Centering System Adapter - VAS5271- .
♦
This way a 100% centering of the wheel and gentle mounting
is possible!
♦
It is not possible to center it 100% on balancing machine with
conical tensioners.
♦
With a deviation of 0.1 mm outside the center, there is an im‐
balance of 10 grams on the wheel/tire.
Wheel/Tire Balancing Procedure
– Let the wheel/tire turn on the balancing machine.
– Check the run of the characteristic lines on the sidewall of the
tire in the area of the rim flange.
– Check the tire wear pattern while the wheel/tire is turning.
Note
In the event of one-sided wear, flat spots from braking or severe
wear spots, smooth running cannot be achieved by balancing. In
this case, the tire must be replaced.
– Check the run-out on the wheel/tire. If the wheel with tire runs
untrue although there are no flat spots, a radial or lateral run-
out may be the cause.
– Check wheel with tire for radial- and lateral run-out. Refer to
⇒ “4.5.2 Wheels and Tires, Radial and Lateral Run Out,
Checking with Tire Dial Gauge”, page 317
– If the radial and lateral run-out are within the specified toler‐
ance, balance the wheel and tire.
Note
♦
Do not use more than 60 grams of weight per wheel.
♦
If more weight is necessary, a smoother running can achieved
by matched mounting of the tire. Tires matching. Refer to
⇒ “4.7 Wheels and Tires, Matching”, page 318
♦
The display in the balancing machine should show 0 grams.
♦
Hunter RFT33VAG Road Force Touch™ Wheel Balancer -
VAS6230B4- can be inserted as an alternative to matching.
Refer to
⇒ “4.4 Vibration Control System”, page 316
.
– Install the wheel on the vehicle.
– First, tighten the lowest wheel bolt hand-tight to approximately
30 Nm.
– Tighten the remaining wheel bolts diagonally to approximately
30 Nm. This process centers the wheel on the wheel hub.
– Lower vehicle onto its wheels.
– Now use a torque wrench to tighten the wheel bolts diagonally
to the specified tightening specification.
Road Test, Performing
– Perform a road test after balancing the wheel/tires.
If a vibration is still detected during the road test, the cause may
be due to tolerance in the wheel centering.
The component tolerances of wheels and wheel hubs can be ad‐
ditive in unfavorable cases. Vibration can result from this. This
can be eliminated using a finish balancer. Refer to
⇒ “4.3.3 Wheel, Balancing with Finish Balancer”, page 315
4.3.3
Wheel, Balancing with Finish Balancer
Note
♦
Working with a Finish Balancer requires instruction from the
manufacturer of the balancer.
♦
When balancing, place the wheels of the driven axle on the
turntable sensors. On a FWD vehicle, the front wheels must
be on the sensors. On AWD vehicles, all four wheels must be
on the sensors.
If it is determined when balancing on the vehicle the remaining
imbalance is more than 20 grams, the wheel should be rotated on
the wheel hub.
– Mark the point at which the imbalance is indicated.
– Afterwards, unbolt the wheel and rotate its position on the
wheel hub so that the marking points downward.
Note
The wheel hub must not turn during this procedure.
– First, tighten the lowest wheel bolt hand-tight to approximately
30 Nm.
– Tighten the remaining wheel bolts diagonally to approximately
30 Nm. This process centers the wheel properly on the wheel
hub.
– Check again whether the imbalance is less than 20 grams us‐
ing the finish balancer.
Note
The imbalance should not be smaller than 20 grams under any
circumstances before changing balance weight.
– Loosen the wheel bolts again, if necessary.
– Rotate the wheel relative to the wheel hub once more by one
or two wheel bolt holes.
– Tighten the wheels according to the method described above.
Note
Only if the imbalance is less than 20 grams should the imbalance
be reduced by changing the balance weight.
– Balance the wheels until the imbalance is below 5 grams.
– Tighten the wheel bolts to the specified tightening specification
if you have not already done so.
WARNING
Always tighten the wheel bolt to the tightening specification and
using the torque wrench.
4.4
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
(1400 lbs) 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 small‐
est dimension between rim flange and disc wheel center is meas‐
ured.
4.5
Tire and Wheel Radial and Lateral Run-
Out, Checking
⇒ “4.5.1 Tire and Wheel Radial and Lateral Run-Out, Checking,
Tolerances”, page 316
⇒ “4.5.2 Wheels and Tires, Radial and Lateral Run Out, Checking
with Tire Dial Gauge”, page 317
4.5.1
Tire and Wheel Radial and Lateral Run-
Out, Checking, Tolerances
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 pre‐
cisely 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.
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)
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