Breakdown assistance
232
•Never start the engine with the vehicle sitting on the raised jack - danger
of suffering injury!
Caution
If you have to change a wheel on a slope first block the opposite wheel with a stone
or similar object in order to secure th e vehicle from unexpectedly rolling away.
Note
Comply with the national legal regulations.
Changing a wheel
Always change a wheel on a level surface as far as possible.
– Take off the full wheel trim* ⇒page 233 or the caps ⇒page 233.
– In the case of light alloy wheels remove the wheel trim cap ⇒page 234.
– First of all slacken the theft-de terrent wheel bolt*, afterwards the
other wheel bolts ⇒page 234.
– Jack up the vehicle until the wheel to be changed is clear of the ground
⇒ page 235.
– Unscrew the wheel bolts and place them on a clean surface (cloth, paper etc.).
– Take off the wheel.
– Fit on the spare wheel and tighten the wheel bolts slightly.
–Lower the car. – Tighten the wheel bolts firmly, al
ternately and diagonally using the
wheel wrench (crosswise) and last the theft-deterrent wheel bolt*
⇒ page 234.
– Mount the full wheel trim/w heel trim cap or the caps.
Note
•All bolts must be clean and must turn easily.
•You must never grease or oil the wheel bolts!
•When fitting on unidirectional tyres, ensure that the tyres rotate in the correct
direction ⇒page 222.
Subsequent steps
After changing the wheel, you must perform the following steps.
– Stow and attach the replaced wheel in the spare wheel well using the
special screw ⇒page 231, fig. 201 .
– Stow the vehicle tool kit in the space provided.
– Check the tyre pressure on the spare wheel just mounted as soon as
possible.
– Have the tightening torque of the wheel bolts checked with a torque
wrench as soon as possible. Steel and light alloy wheels must be tight-
ened to a tightening torque of 120 Nm.
– Have the defective tyre repaired as soon as possible.
WARNING
It is necessary to observe the guidelines given on ⇒page 224 if the vehicle is
subsequently fitted with tyres which are different to those it was fitted with
at the works.
WARNING (continued)
NKO B6 20.book Page 232 Wednesday, March 26, 2008 3:15 PM
