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Exploded view of front seat backrest > < Removing and installing torsion bar

A4 Mk3

Removing and installing bearing for torsion bar
Removing and installing bearing for torsion bar
Removing
  WARNING
t  Observe safety regulations for pyrotechnic components → Chapter.
t  Before handling pyrotechnic components (e.g. unplugging the electrical connector) the mechanic must discharge static electricity by briefly touching the door striker plate, or similar.
  Caution
Move front seat to top position if possible. This will reduce the spring force when removing and installing the torsion bar and minimise the risk of damage to the bolt fittings between the seat pan upper and lower frame.
  WARNING
The torsion bar exerts a considerable spring force. To avoid accidents, it is important that you observe the following points:
t  Always remove and install the torsion bar in the sequence described, and use only the specified tools.
t  Never use pliers or other levering aids.
t  Do not stand directly in front of the torsion bar when removing and installing it, but off to the side.
–  Remove torsion bar → Chapter.
   
–  Pull bearing -1- out of guide -2-.
Installing
  WARNING
The torsion bar exerts a considerable spring force. To avoid accidents, it is important that you observe the following points:
t  Always remove and install the torsion bar in the sequence described, and use only the specified tools.
t  Never use pliers or other levering aids.
t  Do not stand directly in front of the torsion bar when removing and installing it, but off to the side.
  WARNING
t  Observe safety regulations for pyrotechnic components → Chapter.
t  Before handling pyrotechnic components (e.g. plugging in the electrical connector) the mechanic must discharge static electricity by briefly touching the door striker plate, or similar.
Installation is carried out in the reverse order; note the following:
  Note
Make sure electrical connectors are fitted correctly (as far as stop) and engage audibly.
  WARNING
The battery must be connected with the ignition switched on. If pyrotechnic components (e.g. airbag or belt tensioner) are inexpertly repaired, this may result in unwanted triggering after connecting the battery. There must not be anyone in the vehicle while you are connecting the battery.
–  With ignition switched on, connect battery earth wire → Electrical system; Rep. gr.27.
  Note
If the airbag warning lamp -K75- indicates a fault following installation, you must interrogate, erase and then re-interrogate the event memory → Vehicle diagnostic tester.
  A72-10836

Exploded view of front seat backrest > < Removing and installing torsion bar