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209Self-help
– Lower the vehicle.
– Tighten the wheel bolts firmly in diagonal sequence with the
box spanner and then the anti-theft wheel bolt ⇒ page 209.
– Replace the hub cap and/or the bolt covers.
Note
● All bolts must be clean and turn easily.
● Never grease or oil the wheel bolts!
● Note the direction of rotation when putting on a tyre with directional
tread pattern ⇒ page 196.
After changing a wheel
Tasks that must be carried out after changing a wheel.
– Place the wheel with the defective tyre in the spare wheel well
and secure it using a special bolt ⇒ page 199.
– Put the vehicle tools back in their storage location.
– Check the tyre pressure of the newly fitted spare wheel as soon
as possible.
– Have the tightening torque of the wheel bolts checked as soon
as possible with a torque wrench.
– Have the flat tyre replaced or ask an Official Service about the
possibility of repair.
Note
● If you notice that the wheel bolts are rusty and difficult to turn when
changing a wheel, they must be replaced before having the tightening tor-
que checked.
● Drive carefully and at moderate speeds until the tightening torque of the
wheel bolts has been checked.
Loosening and tightening wheel bolts
Fig. 138 Changing a
wheel: Loosening wheel
bolts
Loosening wheel bolts
– Fit the box spanner as far as it will go over the wheel bolt
1)
.
– Grip the end of the box spanner and turn the wheel bolt about
one turn anti-clockwise ⇒ Fig. 138.
Tightening wheel bolts
– Fit the box spanner as far as it will go over the wheel bolt
1)
.
1)
The corresponding adapter is required to unscrew or tighten the anti-theft wheel bolts
⇒ page 211.
Safety First Operating instructions Practical Tips Technical specifications
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