41 11 300 Replacing Left And Right Entrance With Door Post (Partial Replacement, B-Pillar)

Observe procedures for REPAIR STAGE 3 .

Read CONTENTS OF BODY, GENERAL .

Spot-weld bonding is used on this vehicle. Observe specific PROCEDURE .

Use only approved spot-welding apparatus for repairs. See WORKSHOP EQUIPMENT .

Place vehicle on straightening bench.

The following new body parts are required:

• (1) B-pillar with entrance
• (2) ADHESIVE K1 
• (3) Blind rivets N1 (3 pieces)

Fig 1: Identifying B-Pillar

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Removing entrance cover with door post 

Fig 2: Removing Entrance Cover With Door Post

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Mark severance cuts in accordance with specified dimensions and cut.

Measurement a = approx. 270 mm from center point of 25 mm dia. hole.

Dimension b = approx. 140 mm after cut a.

Measurement c = approx. 100 mm from roof edge.

Measurement d = approx. 80 mm below cut c.

Measurement e = approx. 40 mm from center point of 25 mm dia. hole.

OPEN  spot-welded adhesive joints in areas (1). Open welded connections in areas (2).

Mark severance cut in accordance with specified dimension and cut.

Measurement a = approx. 340 mm from center point of 25 mm dia. hole.

Open welded connections in area (1).

Installation note: 

Apply repair welding spots in area (1) to existing welding spots on new part / vehicle.

This is necessary because the adhesive between the spot flanges acts as an insulator.

Fig 3: Identifying Area For Repair Welding (1 Of 2)

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Open welded connections in areas (1).

Perform severance cut (2) according to illustration.

Tilt metal section (3) forwards to gain access to the 4 weld joints underneath.

Open the 4 weld joints.

Installation note: 

Apply repair welding spots in area (1) to existing welding spots on new part / vehicle.

Fig 4: Identifying Area For Repair Welding (2 Of 2)

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Open bonded connection in area (2).

Fig 5: Identifying Spot-Welded And Bonded Areas

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Mark severance cut in accordance with specified dimension and cut.

Dimension a =140 mm from the edge of roof frame.

Open weld joint (1).

Remove cover for side member with B-pillar.

Fig 6: Identifying Welding Area At Joint

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New part preparation 

Mark severance cuts on B-pillar in accordance with severance cuts on the vehicle and cut.

(2) B-pillar reinforcement outer skin

(1) B-pillar outer skin

Fig 7: Identifying Outer Skins And Support For B-Pillar Reinforcement

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Mark severance cut (1) and other severance cuts according to the severance cuts on the vehicle and cut.

Partially release metal section (2) as described in removal and tilt forwards.

Open weld joints in area (3) and remove cover for side member (4).

Prepare REINFORCEMENT PLATES  at severance cuts.

Fig 8: Welding In New Part

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Set 3 6.8 mm Ø bore holes for blind rivets in area (1). Drill from passenger compartment.

Fig 9: Identifying Area For Blind Rivets

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

Fig 10: Identifying Bonding Surfaces

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Installing entrance cover with door post 

Clean bonding surfaces with cleaning agent R1.

Apply adhesive K1 to bonding surfaces.

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

Set 3 blind rivets N1.