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).
Ensure watertightness of sound insulation after every repair (water ingress).

Necessary preliminary work:

Remove rear DOOR TRIM PANEL

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.

Fig 1: Cutting Sealing Bead Of Sound Insulation Using Sharp Cutting Tool

Courtesy of BMW OF NORTH AMERICA, INC.

Position of sealing bead (1).

Feed out sound insulation (3) at cable (2) and remove.

Fig 2: Identifying Sealing Bead, Sound Insulation And Cable

Courtesy of BMW OF NORTH AMERICA, INC.

Clean bonding area with adhesive remover (sourcing reference: BMW Parts Department).

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

Fig 3: Identifying Marking On Sound Insulation

Courtesy of BMW OF NORTH AMERICA, INC.

Replacement

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.

Contact pressure with hand roller: approx. 20 N/cm²

Manual contact pressure: approx. 10 N/cm²

NOTE: Firm thumb pressure has approx. 30 N/cm²