03/07/2024 16:00:36

Rear Wheel Arch (Complete)

Repair Information

  • Review all collision repair general practices and safety documentation and wear the appropriate PPE (Personal Protective Equipment) before beginning this procedure.
  • This procedure can be completed without using a frame bench.
  • The Rear Wheel Arch Assembly can be repaired as follows:
    • The whole Rear Wheel Arch Assembly can be replaced in a single repair as a single complete component, using the M3 ASY, RR W/H OUTER COMPLETE service part and the instructions in the Repair Procedure section of this document.
    • The rear section of the Rear Wheel Arch Assembly can be repaired using the rear portion of the service assembly shown in the Sectioning Guidelines. If replacing the rear section of the Rear Wheel Arch Assembly (not the entire Rear Wheel Arch Assembly), use only the relevant portions of each step in the Repair Procedure to determine which fasteners are needed and the steps required to complete the repair.
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      Note
      The front section of the Rear Wheel Arch Assembly cannot be repaired using a portion of the service assembly. If the front portion of the Rear Wheel Arch Assembly is damaged, replace the whole component as described in the Repair Procedure section of this document.

Sectioning Guidelines

General sectioning guidelines:
  • It is allowable to cut through a clearance hole or a non functional hole (exterior trim hole), as described below.
  • Do not cut within 25 mm. of the center of a stud.
  • Sections do not require fasteners at butt or overlap joints unless specifically indicated.
  • Gaps between panels of overlaid and butt joints should be as small as possible to maximize joint strength.
  • Seal all open seams.
Rear Wheel Arch Assembly and Sectioning
The Rear Wheel Arch (shown below) is a single assembly, and can be replaced as a single repair: Alternatively, instead of replacing the complete Rear Wheel Arch, the rear section of the Rear Wheel Arch can be replaced using a portion of the complete Rear Wheel Arch Assembly service part using the cut lines described below.

M3 ASY, RR W/H OUTER COMPLETE

M3 ASY, RR W/H OUTER COMPLETE Sections

Rear Wheel Arch Section Descriptions

Cut Line

Reference Line/Point

  • A = 25 mm.
  • B = 15 mm.
  • C = 55 mm.
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Warning
The outer edge of the Wheel Arch (where the Wheel Arch surface joins the Body Side Outer) must be flat to allow the overlying Body Side Outer component to fit correctly.
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Note
The forward edge of the replacement section is installed under the rear edge of the component on the vehicle, with an overlap of at least 25 mm. This joint is secured only with structural adhesive.
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Note
The gap between the adjacent panels of the butt and overlaid joints for this section should be as small as possible to maximize joint strength.

Repair Procedure

  1. Remove the Rear Wheelhouse Reinforcement.
  2. Remove the original component.
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    Note
    A red X indicates a location where a factory-installed fastener is not being replaced.

    or Factory Spot Welds

    or Drill through factory spot welds
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    Note
    When drilling out spot welds, use a drill bit that creates a hole correctly sized for the fastener that will replace the spot weld.

    or Factory SPRs

  3. Prepare for installation.
    Informational PurposesAn informational icon, calling your attention
    Note
    A red X indicates a location where a factory-installed fastener is not being replaced.
    or Countersunk Rivets, 4.8 mm Long

    or Structural Bulb Rivets, 6.5 mm

    or Rivets, 4.8 mm

  4. Apply structural adhesive to the mating surfaces on the vehicle and the new component or components.
  5. Install the new component or components.
  6. Install the new Rear Wheelhouse Reinforcement.
  7. Perform any necessary post-repair operations.