41 21 675 Replacing B-Pillar Reinforcement And Sill, Inner Left (Rear Side Panel Removed)

Observe procedure for repair stage 3. See 41 00 REPAIR TECHNIQUES, REPAIR STAGE 3 .

Read contents of 41 00... 0 CONTENTS OF BODY, GENERAL .

Spot-weld bonding is used on this vehicle. Observe specific procedure. See 41 00... SPOT-WELD BONDING STEEL COMPONENTS .

Use only approved spot-welding apparatus for repairs. See 41 00... WORKSHOP EQUIPMENT (BMW AND MINI VEHICLES) .

Place vehicle on straightening bench.

Following new body parts are required (refer to 41 00... OVERVIEW OF CONSUMABLES ):

• (1) Inner side member
• (2) Outer side frame
• (3) Water collection box
  Fig 1: Identifying Inner Side Member And Outer Side Frame

  Courtesy of BMW OF NORTH AMERICA, INC.

Removal of B-pillar with reinforcement 

Clean all bonding surfaces on vehicle and on new part with cleaning agent R1.

View of B pillar from passenger compartment.

Open welded connections in areas (1).

Fig 2: Identifying Welded Connections Areas

Courtesy of BMW OF NORTH AMERICA, INC.

Open welded connections in area (1).

Fig 3: Identifying Welded Connections Area

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Fig 4: Identifying Mark Severance Cut Dimension And Spot-Welded Adhesive Joints Area

Courtesy of BMW OF NORTH AMERICA, INC.

Mark severance cut in accordance with dimension and cut.

Dimension a = approx. 75 mm from 20 mm diameter hole.

Open welded connections in areas (1).

Open spot-welded adhesive joints in area (2). See 41 00... OPENING BONDED CONNECTIONS .

Remove side member support section.

Open welded connections in area (1).

Open spot-welded adhesive joints in area (2)

Fig 5: Identifying Welded Connections Area

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Fig 6: Identifying Mark Severance Cut Dimension And Spot-Welded Adhesive Joints Area

Courtesy of BMW OF NORTH AMERICA, INC.

Mark severance cut in accordance with dimension and cut.

Dimension a = approx. 165 mm after bulkhead.

Open welded connections in areas (1).

Open spot-welded adhesive joints in area (2)

Remove side member support section.

New part preparation 

Mark severance cuts on new parts in accordance with vehicle and cut.

Prepare reinforcement plates at severance cuts. See 41 00... WELDING IN REINFORCEMENT PLATE (SHEET STEEL) .

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

Installation of B-pillar with reinforcement, inner 

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

Apply sealant to water collection box and to vehicle.

Install water collection box.

View of vehicle underside:

Weld new component in area (1) additionally.

For this set 20 mm MAG weld seams at a distance of 30 mm in area (1).

Fig 7: Identifying MAG Weld Seams Area

Courtesy of BMW OF NORTH AMERICA, INC.

View of B-pillar from passenger compartment:

Weld new component in area (1) additionally.

For this set 20 mm MAG weld seams at a distance of 30 mm in area (1).

Fig 8: Identifying MAG Weld Seams Area

Courtesy of BMW OF NORTH AMERICA, INC.