51 48 070 Removing and Installing/Replacing Sound Insulation on Left or Right Rear Door

51 48 070 Removing and installing/replacing sound insulation on left or right rear door







IMPORTANT:
- 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).
- It is essential to ensure the sound insulation is watertight (water intrusion) every time any repair work has been carried out.







Necessary preliminary tasks:
- Remove rear door trim panel







Position of sealing bead (1).
Feed wires (2) out of sound insulation (3).







IMPORTANT: 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.







Clean bonding area with adhesive remover (sourcing reference: BMW Parts Service).
Air drying time: 1 minute

IMPORTANT:
- 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.







NOTE:
Replacement:
- Lay 6 mm dia. butyl rope (sourcing reference:
- BMW Parts Department) in specified adhesive area.
- Heat butylene tape (hot air blower) and press down firmly on sound insulation all round.
- Contact pressure with hand roller: approx. 20 N/cm2
- Manual contact pressure: approx. 10 N/cm2
- Firm thumb pressure has approx. 30 N/cm2







NOTE: Position of butyl rope (1) on sound insulation (2).







NOTE:
- A marking (2) is provided all round on the sound insulation (1).
- Butyl rope (3) rests on or inside the marking (2).