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

WARNING: This page is about a different variant/trim than selected.

IMPORTANT: NOTES ON 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).

Fig 1: Identifying Sealing Bead, Feed Wires And Sound Insulation

Courtesy of BMW OF NORTH AMERICA, INC.

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: Identifying Sealing Bead, Sharp Cutting Tool And Sealing Bead

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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

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

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

Fig 3: Identifying Butyl Rope And Sound Insulation

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

Fig 4: Identifying Sound Insulation, Butyl Rope And Marking

Courtesy of BMW OF NORTH AMERICA, INC.