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

Remove rear door trim panel, refer to 51 41 000 REMOVING AND INSTALLING LEFT OR RIGHT FRONT DOOR TRIM PANEL .

If necessary, remove airbag module in front door, refer to AIR BAG RESTRAINT SYSTEMS .

Unfasten plug connection (1).

Release screws (2) and remove speaker unit.

Fig 1: Unfastening Plug Connection (1) And Releasing Screws (2) And Removing Speaker Unit

Remove inside door handle on front door, refer to 51 21 225 REMOVING AND INSTALLING OR REPLACING INSIDE DOOR OPENER IN LEFT OR RIGHT FRONT DOOR .

CAUTION: Do not kink fiber optics cable. The bending radius of the fiber optics cable must not be less than 20 mm.

Detach central light source (1) from retainer (2).

Disconnect plug connection (3) and detach fiber optics cable (4) from central light source.

Fig 2: Detaching Central Light Source

Release screws (1) and remove holder for central light source (2).

Fig 3: Releasing Screws (1) And Removing Holder For Central Light Source (2)

Release cable tie (1) on wiring harness (2).

Disconnect plug connections (4).

Fig 4: Releasing Cable Tie On Wiring Harness

Release expansion rivets (1).

Fig 5: Releasing Expansion Rivets

Using special tool 00 9 317 (trim panel wedge), lever out sealing bead (1) of sound insulation (2) completely or if necessary partially.

Fig 6: Identifying Lever Out Sealing Bead Of Sound Insulation

Installation:

In event of replacement or partial detachment, lay butylene tape on inner door plate or sound insulation.

Seal cable penetrations with butylene tape.

NOTE: Position of butylene tape (1) on inner door plate.

Fig 7: Positioning Of Butylene Tape On Inner Door Plate

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

Fig 8: Positioning Of Butylene Tape On Sound Insulation

CAUTION: When working with adhesive cleaners in enclosed rooms: Ensure room is well ventilated. The adhesive areas must be dry and free from dust and grease. After cleaning, do not touch the adhesive areas with bare hands.

If necessary, clean the specified adhesive area with adhesive cleaner.

Air drying time: 1 minute.

Lay butylene tape with a diameter of 6 mm 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. 30 N/cm² .

Manual contact pressure: approx. 10 N/cm² .

NOTE: Firm thumb pressure has approx. 50 N/cm² .