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Instructions for sound insulation are an essential part of these repair instructions and must be followed without fail.
Do not detach sound insulation in jerks (risk of damage).
Ensure watertightness of sound insulation after every repair (water ingress).
Necessary preliminary tasks:
Remove front door trim panel.
If necessary, remove airbag module in front door.
When cutting through sealing bead (1), do not damage sound insulation (2) and if necessary cable.
With a suitable sharp cutting tool (3) cut through sealing bead (1) of sound insulation (2) in the area to be detached.
Position of sealing bead (1).
Feed airbag wire (3) out of sound insulation (2).
Clean bonding area with adhesive remover (sourcing reference: BMW Parts Department).
Air drying time: 1 minute
Adhesive areas must be dry and free of dust and grease.
Once it has been cleaned, do not touch the adhesive area with bare hands.
Lay 6 mm dia. butyl rope (sourcing reference: BMW Parts Department) in specified adhesive area.
Heat butyl rope (hot-air blower) and press down firmly on sound insulation all round.
2 Contact pressure with hand roller: approx. 20 N/cm
2 Manual contact pressure: approx. 10 N/cm
2 Firm thumb pressure has approx. 30 N/cm
Position of butyl rope (1) on inner door panel.
Position of butyl rope (1) on sound insulation (2).