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

Read 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 .

Use only approved SPOT-WELDING APPARATUS  for repairs.

Place vehicle on straightening bench.

Side panel removed 

Following new body parts are required (see CONSUMABLES ):

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

Following CONSUMABLES  are required:

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Material	Quantity
Punch rivets N4	16

Removal of side frame (B-pillar reinforcement) 

Additionally removing the side wall:

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

Dimension a = approx. 5 mm from edge of roof frame.

Open welded connections in areas (2).

Remove side panel metal section (3).

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Mark severance cut (1) and cut.

Open welded connections in areas (2).

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View from below:

Extend severance cut (1) to lower edge of entrance.

Open weld joints in area (2) and remove entrance section.

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Open welded connections in areas (1) and (2).

UNDO  bonded connection in this area (3).

Release cavity sealings in area (4).

Remove B-pillar reinforcement.

Installation note:

Adhesive is omitted in areas (2 and 3). Prepare body in these areas for plug/spot welding.

Open welded connections in area (1).

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Open welded connections in area (1).

Open adhesive bonds in area (2).

Remove B-pillar tube reinforcement.

Remove cavity acoustic baffle (3).

Installation note: 

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

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New part preparation 

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.

Installation note: 

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

Prepare REINFORCEMENT PLATES  at severance cuts.

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Open welded connections in areas (1).

Remove metal section (2).

Adjust new part to fit with set of attachments or universal mount.

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Installation of side frame (B-pillar reinforcement) 

Coat cavity sealings  . See 41 00... INSTALLING CAVITY SEALING (EXPANDED)  or 41 00... INSTALLING CAVITY SEALING (NOT EXPANDED)  with sealant.

Install new parts with alignment bracket or universal mount and weld.

Divergent installation of the side wall: 

The SIDE PANEL  is glued at areas (1) and riveted in place with 6 punch rivets.

In area (2), the side panel is welded.

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The side wall is bonded in areas (1) and (2).

Use 10 punch rivets in area (1).

Tighten nuts for the REINFORCEMENT PLATE  in area (3).

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