51 43... Removing and installing/replacing speaker cover on left or right side trim panel

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Necessary preliminary tasks:

Remove speakers. See REMOVING MIDRANGE SPEAKER and REMOVING TWEETER .

Removal:

IMPORTANT: Speaker is welded to side trim panel only on initial installation.
So that contact surface of side trim panel is not damaged, only drill down to side trim panel base area.

Drill out welding spots (1) on side trim panel with 8 mm dia. weld spot drill bit.

Release speaker cover (2) at latch mechanism (3) and remove.

Fig 1: Identifying Speaker Cover, Welding Spots, And Latch Mechanism

Courtesy of BMW OF NORTH AMERICA, INC.

Remove welding residuals on side trim panel with scalpel (for heavy duty use).

Installation:

Insert speaker cover (1) in side trim panel and secure with latch mechanism (2).

Secure pins (3) with nuts (4).

NOTE: Carefully apply nuts (4) so that they do not become overrevved.

Saw off all pins (3) to dimension (X) (risk of damage of sound insulation).

Dimension (X) = 2 mm

IMPORTANT: Do not clip off pins (3) with diagonal cutting pliers, as the pins can thereby become warped and the nuts (4) become loose.
To not drop below dimension (X) while sawing off, place on suitable washer and saw off pins (3) above the washer.

Fig 2: Installing Speaker Cover

Courtesy of BMW OF NORTH AMERICA, INC.