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

After every repair, check that the sound insulation is water-tight (water ingress).

Necessary preliminary tasks:

Remove rear door trim panel. See TRIM PANEL (UP TO 03/2007) or TRIM PANEL (LONG VERSION OR FROM 03/2007) .

Unclip cable holder (1).

Position of sealing bead (2).

Feed out wires in area (4) and remove sound insulation (3).

Installation:

If necessary, replace cable holders (1).

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

Courtesy of BMW OF NORTH AMERICA, INC.

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 cord (sourcing reference: BMW Parts Department) in specified adhesive area.

Heat butyl cord (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 cord (1) on inner door panel.

IMPORTANT:

Do not damage Bowden cable (2) and lock knob control rod (3).

Fig 3: Positioning Of Butylene Tape On Inner Door Plate

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: Position of butylene tape (1) on sound insulation (2).

Fig 4: Positioning Of Butylene Tape On Sound Insulation

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE:

A marking (2) is provided all round on the sound insulation (1).

Butylene tape (3) rests on or inside the marking (2).

Fig 5: Applying Butylene Tape

Courtesy of BMW OF NORTH AMERICA, INC.