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).

Fig 1: Identifying Sealing Bead, Wires And Sound Insulation

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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 Sound Insulation Sealing Bead Using Tool

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Clean bonding area with adhesive remover.

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 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/cm ²
Manual contact pressure: approx. 10 N/cm ²

NOTE: Firm thumb pressure has approx. 30 N/cm ²

Fig 3: Identifying Butyl Rope On Sound Insulation

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

Fig 4: Identifying Marking On 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).