41 21 930 Replacing Inside Left Side Frame (B-Pillar Reinforcement)

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

Read contents of Body, General . Refer to 41 0 Contents Of Body, General .

Remove or cover those vehicle components in the repair area which are susceptible to heat or dust.

Spot-weld bonding is used on this vehicle. Observe specific procedure . Refer to 41 00... Opening Adhesive Bonds and/or 41 00... Spot-Weld Bonding Steel Parts .

Use only approved spot-welding apparatus for repairs! Refer to 41 00... Workshop Equipment .

Place vehicle on straightening bench.

Side panel removed.

Following new body parts are required (refer to Electronic Parts Catalogue ETK):

(1) B-pillar, inner
(2) Shaped part, B-pillar, inner
(3) Shaped part, B-pillar, bottom outer
(4) Shaped part, B-pillar, side

Fig 1: Identifying Shaped Part, B-Pillar, Side
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Mark severance cut (1) in accordance with measurement and cut.

IMPORTANT: Cut outer metal sheet only.

Measurement a = approx. 5 mm.

Open weld joints in areas (2).

Remove side panel metal section (3).

Fig 2: Marking Severance Cut In Accordance With Measurement

Courtesy of BMW OF NORTH AMERICA, INC.

Mark severance cut (1) and cut.

IMPORTANT: Cut outer metal sheet only.

Open weld joints in areas (2).

Fig 3: Marking Severance Cut

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Fig 4: Identifying Cavity Acoustic Baffles Area

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Open weld joints and in areas (1 and 2).

Open adhesive bond in area (3).

Release cavity acoustic baffles in area (4).

Remove B-pillar reinforcement.

Installation:

Adhesive is omitted in areas (2 and 3). Prepare body in these areas for plug/spot welding.
Bond new cavity acoustic baffles (4) with window adhesive. Refer to 41 00... Installing A Cavity Acoustic Baffle (Not Expanded) .

Open weld joints in area (1).

Fig 5: Identifying Weld Joints Area

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Open weld joints in area (1).

Open adhesive bonds in area (2).

Remove B-pillar tube reinforcement.

Remove cavity acoustic baffle (3).

Installation:

Adhesive is omitted in area (2). Prepare body in area (2) for plug/spot welding. New part is welded from inside.

Stick on new cavity acoustic baffle (3) with window adhesive. Refer to 41 00... Installing A Cavity Acoustic Baffle (Not Expanded) .

Fig 6: Identifying Cavity Acoustic Baffle

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Preparation of new part:

Mark severance cut (1) in accordance with body and cut.

Mark severance cut (2) in accordance with measurement and cut.

Measurement a = approx. 50 mm.

IMPORTANT: Cut outer metal sheet only.

Installation:

Metal section (3) is needed again for sealing B-pillar.

Weld in reinforcement plate at severance cut. Refer to 41 00... Welding In Reinforcement Plate (Steel Plate) .

Fig 7: Marking Severance Cut In Accordance With Measurement

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Preparation of new part:

Open weld joints in areas (1).

Remove metal section (2).

Fig 8: Identifying Weld Joints Area

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Installation:

Adjust new part to fit with straightening attachment or universal mount.