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Removing and installing tyre pressure sensor > < Exploded view of tyre pressure sensor

A4 Mk3

Changing a tyre
Changing a tyre
The nickel-plated valve core must always be renewed if a tyre is changed → Electronic parts catalogue.
The tyre pressure sensor can be re-installed.
–  For safety reasons, renew the tyre pressure sensor and clean the rim after using a tyre sealant.
–  Release air from tyre by unscrewing nickel-plated valve core.
–  Remove tyre → Fig..
–  Renew valve core → Item if the tyre is changed.
–  Do not use steam cleaners or a powerful jet of compressed air for cleaning sensors.
–  When re-installing a used tyre pressure sensor, inspect the sensor to check whether the connection between the sensor and the metal valve is damaged.
Renew damaged sensors.
  Caution
Hold the valve body when sliding on the new seal and sealing washer to prevent it from being pushed out.
If the connection breaks, renew the tyre pressure sensor.
–  Fit tyre → Fig..
–  Screw in new nickel-plated valve core.
–  Inflate tyre.
–  Balance wheel.
   
Removing tyre
Roll off or unseat tyre.
When using an unseating tool, first press off the tyre on the side opposite the valve.
Unseating tools must not be used in hatched area -a-.
–  Position head of installing tool close to valve so that tyre iron can be applied approx. 30° -b- away from valve.
–  Then pull off the tyre in the valve area first.
  A44-0087
Fitting tyre
Unseating tools must not be used in valve area.
–  Position tyre pressure sensor approx. 180° opposite head of installing tool.
–  Press tyre into well base approx. 90° in front of installing tool -arrow-.
–  Fit tyre.
  A44-0088

Removing and installing tyre pressure sensor > < Exploded view of tyre pressure sensor