41 00... Carrying Over Hole Pattern

When replacing a body component, it is necessary to carry over the hole pattern from the existing body to the new component.

The following pictures are a schematic representation of carrying over the hole pattern on the example of the front wheel arch.

Necessary preliminary tasks 

Adjust new part to fit with straightening attachment.

Insert paper stencil (1) between new component (2) and engine carrier and secure with adhesive tape (3).

Carry over contour (4) of new component to stencil.

Remove new component.

Fig 1: Identifying Paper Stencil, Engine Carrier Components, Adhesive Tape And Contour

Courtesy of BMW OF NORTH AMERICA, INC.

1. = contour of new component.

Carry over positions of holes (2) to stencil by pressing down with thumbs.

Remove stencil.

Fig 2: Identifying Hole Position Line

Courtesy of BMW OF NORTH AMERICA, INC.

Fig 3: Identifying Stencil, Hole Centerpoint And Cross Mark

Courtesy of BMW OF NORTH AMERICA, INC.

Lay stencil (1) on a flat surface.

Mark centrepoints of holes with crosses (2).

Then pierce paper through centrepoints (3) of holes with a pointed object.

Align stencil (1) according to contours (2) to inside of new component and secure with adhesive tape (3).

Fig 4: Identifying Stencil, Adhesive Tape And Contour

Courtesy of BMW OF NORTH AMERICA, INC.

Turn over new component.

Set punch marks at pierced centrepoints (1).

Grip directly under punch marks for marking with punch.

Remove stencil (2).

Drill holes to approx. +3 - 4 mm dia. at punch marks (1).

Fig 5: Identifying Stencil And Punch Mark On Pierced Centrepoints

Courtesy of BMW OF NORTH AMERICA, INC.

Position new component (1) with straightening attachment on vehicle.

Drill out holes (2) to 6.7 mm dia.

Fig 6: Identifying Component Position And Drill Holes

Courtesy of BMW OF NORTH AMERICA, INC.