Seat Leon 2013 Workshop Manual page 320

León 2013 ➤ , León ST 2013 ➤
Running gear, axles, steering - Edition 06.2018
Note
To clamp the wheel in place, use centring system for wheel
♦
balancing machines - VAS 5271- , for example.
This ensures that the wheel is 100% centred and that the
♦
wheel will be clamped without damage!
The wheel cannot be centralised 100% with conical clamping
♦
elements on the wheel balancing machine.
A centring arrow of 0.1 mm corresponds to an imbalance of
♦
10 g.
Procedure for balancing wheels and tyres
– Allow the wheel (together with tyre) to rotate on the wheel bal‐
ancing machine.
– Check that the indicator lines on the sidewall of the tyre near
the rim flange run evenly.
– Check that the body of the tyre runs evenly while the wheel
and tyre are rotating.
Note
If one-sided wear, flat spots from braking or severe erosion is ap‐
parent, balancing will not be able to achieve smooth running. In
this case, the tyre must be renewed.
– Check true running of the wheel/tyre. If not all the wheel turns
in a concentric manner, and if no flattening has been detected,
there may be radial or axial run-out.
– Check the wheel for radial or lateral runout
– If the radial and axial run-out do not exceed the permitted tol‐
erance levels, balance the wheel and the tyre.
Note
Do not attach counterweights of over 60 g to the wheels.
♦
If a higher weight is required, a better balance can be achieved
♦
through matching the tyres
The display on the balancing equipment should read 0
♦
grammes.
As an alternative to match mounting, you could use the vibra‐
♦
tion control system - VAS 6230 A-
– Bolt the wheel to the vehicle.
– First, hand-tighten the lowest wheel bolt to about 30 Nm.
– Then, tighten the remaining wheel bolts diagonally to about 30
Nm. This process centres the wheel on the hub.
– Lower vehicle onto its wheels.
– Now use the torque wrench to firmly tighten the wheel bolts
diagonally to the prescribed torque.
Test drive.
– After balancing the wheel/tyre, carry out a road test.
314
Rep. gr.44 - Wheels, tyres, vehicle geometry
⇒ page 317
⇒ page 318 .
⇒ page 316 .
.