Removing and Installing/Replacing Left or Right AHPS1 Head Airbag

72 12 040 - Removing and installing/replacing left or right AHPS1 head airbag





Warning!
Observe safety precautions for handling airbag modules and pyrotechnical seat belt tensioners.

Incorrect handling can activate head airbag and cause injury.
Follow Instructions for Disconnecting and Connecting Battery instructions for disconnecting and connecting battery.
Disconnect battery negative lead Disconnecting and Connecting Battery Negative Lead from battery.
Remove headliner.





Release screws on holder (2).

Installation:
Tightening torque 72 12 03AZ Airbag Modules.

Pull holder (2) out of body.

Note:
Retainers on holder may break off. These retainers serve as an installation aid during series production and are not important for repairs.

Release screws (3).

Installation:
Tightening torque 72 12 04AZ Airbag Modules.

Remove AHPS1 (1).





Detach felt strip (1) from gas generator.

Installation:
Replace felt strip (1) in event of damage or poor adhesion.
Unlock plug (2) on gas generator of AHPS1 head airbag and detach.





Note:
To release nut (1), use joint socket 10 A/F, drive 1/4 ''. Insert joint socket from below between gas generator and instrument panel trim and fit on nut (1).





Note:
Nuts may fall out slightly after being released. If necessary, place some butyl in socket.
Release nuts (1 and 2).
Pull gas generator (3) out of mounting.





Installation:
Replace self-locking nuts.
Place nut (1) on threaded pin and turn twice.
Insert gas generator into mounting (2).





Installation:
Install gas generator (2) with slotted section of holder below nut (1) on threaded pin.
Turn gas generator (2) in direction of arrow until holder with opening (3) slides over threaded pin.
Screw in second nut partially.
Set a tightening torque of 8 Nm on torque wrench.
Tighten down both nuts.

Note:
Nut (1) is tightened to a lower torque on account of joint socket.
However, this torque is sufficient to secure the gas generator firmly.
If necessary, prime scratches made on body.





Note:
View of retaining screw with anchor fitting of AHPS1 head airbag:
1 - Anchor fitting, AHPS1 head airbag
2 - Lock washer
3 - Retaining screw