Removal of front door post

WARNING: This page is about a different car, the 2011 BMW 750xi, 2011 BMW 750Lxi, 2010 BMW 750xi, and 2010 BMW 750Lxi. However, it is still accessible from the selected car via links, so may be relevant.

Roughly cut side frame connection along lines (1).

LOOSEN spot-welded adhesive joints in areas (2).

Open welded connections in areas (3).

Release side frame connection from cavity sealing (4) and remove.

Open remaining welded connections in areas (1).

Fig 1: Identifying Side Frame Connection, Cavity Sealing And Welded Connections Area

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Fig 2: Identifying Welded Connections Areas, Metal Section And Sheet Sections

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Mark severance cuts in accordance with specified dimensions and cut.

IMPORTANT: Cut outer panel only for following severance cuts.
Dimension a = 200 mm from roof edge.
Dimension b = 100 mm below severance cut a.
Dimension c = approx. 165 mm before center of hole dia. 15 mm.
Dimension d = 140 mm before severance cut c.
Open welded connections in areas (1).
Remove sheet sections (2).

NOTE: Cut-out metal sections (2) are required again for sealing.

IMPORTANT: For following severance cut, do not damage slide/tilt sunroof water drain hose.
Cut outer panel only.

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

Dimension a = approx. 250 mm from roof edge.

Fig 3: Identifying Roof Edge Cutting Dimension

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

IMPORTANT: Cut outer panel only.

Measurement a = approx. 235 mm before centerpoint of 20 mm dia. hole.

Fig 4: Identifying Outer Panel Cutting Dimension

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Fig 5: Identifying Bonded Connection Area, Cavity Sealing And Welded Connections Areas

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Open welded connections in areas (1).

Open spot-weld bonded joints in areas (2).

Open bonded connection in area (3).

Remove cavity sealing (4).

Installation note:

Replace glued joint in area (3) with MAG weld seam.

View from below.

Open weld joint (1).

Fig 6: Identifying Welded Connection

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View from inside.

Open weld joint (1).

Feed out water drain hose (2) for slide/tilt sunroof.

Fig 7: Identifying Welded Connection And Water Drain Hose

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Roughly mark severance cut (1).

Cut out A-pillar metal section (2) and A-pillar reinforcement underneath.

Fig 8: Identifying A-Pillar Metal Section And Severance Cut Mark

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Release bonded connection (1).

Fig 9: Identifying Bonded Connection

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Remove holder (1) for side wall.

Roughly mark severance cut (2).

Cut out A-pillar metal section and A-pillar reinforcement underneath.

Remove cavity acoustic baffle (3).

Fig 10: Identifying Holder, Severance Cut And Cavity Acoustic Baffle

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Fig 11: Identifying Welded Connection Areas

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Drill through 2 welded connections in areas (1) with 6.8 mm dia. drill.

NOTE: New part is joined in areas (1) by bonding-riveting technology.

Fig 12: Identifying Rivet Positions

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Additional rivet positions are required for installation in areas (1) for strengthening reasons.

Additional rivet positions (black, number 2)
Welded connections ex works (grey, number 2)

Drill additional rivet positions with 6.8 mm dia. drill in accordance with schematic drawing.

Open remaining areas of welded connections (grey, number 2) through grinding.

Release bonded connections in areas (1) and remove A-pillar.