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Home >> BMW >> 2018 >> X3 M40i >> Repair and Diagnosis >> External Pages >> Different car >> Section 482 (Collision - Body Panel Repair (F25)) >> Wheel Wells >> 41 14 502 Replacing Rear Left Outer Wheel Arch Section With Reinforcement (Rear Side Panel Removed)

41 14 502 Replacing Rear Left Outer Wheel Arch Section With Reinforcement (Rear Side Panel Removed)

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Follow procedure for REPAIR STAGE 3 .

Read contents of BODY, GENERAL .

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

Use only approved SPOT-WELDING APPARATUS  for repairs.

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

Removal of the outer wheel arch section with reinforcement 

Additionally removing the side wall in the side sill area:

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

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

  1. (3) = Severance cut progression for replacement of side wall.
Fig 2: Identifying Lower Edge Of Entrance Severance Cut, Weld Joints Area
G09947758Courtesy of BMW OF NORTH AMERICA, INC.

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

IMPORTANT: Cut outer panel only.

Dimension a = approx. 70 mm.

Open welded connections in areas (2).

Remove cavity acoustic baffle (3).

Fig 3: Identifying Cavity Acoustic Baffle Welded Connections Areas
G09947759Courtesy of BMW OF NORTH AMERICA, INC.

Remove cavity sealing (1).

Open welded connections in areas (2).

Remove reinforcement on C-pillar.

Fig 4: Identifying Cavity Sealing, Welded Connections Areas
G09947760Courtesy of BMW OF NORTH AMERICA, INC.

Open welded connections in area (1). Remove outer section of wheel arch.

Fig 5: Identifying Outer Section Of Wheel Arch Welded Connections Area
G09947761Courtesy of BMW OF NORTH AMERICA, INC.

New part preparation 

Tear and separate the separating cut on the C-pillar reinforcement new part according to the vehicle.

Prepare REINFORCEMENT PLATE  at severance cut.

Adjust new parts in conjunction with side panel to fit.

Installation of the outer wheel arch section with reinforcement 

Apply sealant to new CAVITY SEALINGS .

Install new parts and reinforcement plate and weld in place.

Installation of additional side wall section in side sill area: 

Weld additional section in area (1).

Join additional section similarly to side wall using bonding/riveting technology in area (2).

Install 3 punch rivets N4 in area (2).

IMPORTANT: Risk of damage to adjoining adhesive areas!
Avoid excessive application of heat.
Fig 6: Identifying Bonding/Riveting And Punch Rivets N4 Area
G09947762Courtesy of BMW OF NORTH AMERICA, INC.