51 48 060 Removing and installing/replacing sound insulation in left or right front door

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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 tasks:

Remove DOOR TRIM PANEL

Twist and remove the twist clips (1) (bayonet fitting).

Installation note:

Sealing surfaces (2) on the sound insulation (3) must not be damaged.

Fig 1: Identifying Twist Clips And Sound Insulation Sealing Surfaces

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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 2: Cutting Through Sealing Bead Of Sound Insulation

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Position of sealing bead (3).

Feed out and remove sound insulation (1) at wiring harness (2).

Fig 3: Identifying Sealing Bead, Wiring Harness And Sound Insulation

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When refitting:

Damaged sound insulation must be replaced.

Lay butyl rope with Ø 3 mm (sourcing reference: BMW Parts Department) onto the original butyl rope.

Replacement:

Remove residual butyl at the door and clean the adhesive area.

Air drying time: 1 minute

IMPORTANT: Bonding surface 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 onto the sound insulation.

NOTE: A mark (2) is provided all round on the sound insulation (1).

Butyl rope (3) rests on or inside the marking (2).

Heat butyl rope (3) (hot air blower) and press sound insulation (1) on firmly 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

Fig 4: Installing Sound Insulation

Courtesy of BMW OF NORTH AMERICA, INC.