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: Inserting Paper Stencil Between New Component And Engine Carrier And Secure With Adhesive Tape

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: Carrying Over Positions Of Holes To Stencil By Pressing Down With Thumbs

Courtesy of BMW OF NORTH AMERICA, INC.

Fig 3: Piercing Paper Through Centerpoints Of Holes With Pointed Object

Courtesy of BMW OF NORTH AMERICA, INC.

Lay stencil (1) on a flat surface.

Mark centerpoints of holes with crosses (2).

Then pierce paper through centerpoints (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: Aligning Stencil According To Contours To Inside Of New Component And Secure With Adhesive Tape

Courtesy of BMW OF NORTH AMERICA, INC.

Turn over new component.

Set punch marks at pierced centerpoints (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: Setting Punch Marks At Pierced Centerpoints

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: Positioning Component With Straightening Attachment On Vehicle

Courtesy of BMW OF NORTH AMERICA, INC.