51 71... Sticking templates for door seal to inner door panel (door seal removed)

The position of the sealing is set by means of templates (in the form of adhesive film).

Matching templates are supplied with new seals.

Procedure applies universally but is illustrated for front door. 

Necessary preliminary tasks: 

• Separate pre-perforated cut-outs (2) for door lock fixings, reflectors, etc. from templates (1) if necessary.
• Clean surfaces where templates are to be stuck on inner door panel with adhesive remover (sourcing reference: BMW Parts Department).

Apply templates to inner door panel: 

Graphic (A):  before sticking down template (3) align with inner door panel (1)

• Template contact edge and door lock cut-out edge match identically (4)
• Marking on template and start of inner door panel curvature match identically (2)
Fig 2: Applying Templates To Inner Door Panel
Courtesy of BMW OF NORTH AMERICA, INC.

Graphic (B):  checking position of template relative to inner door panel after sticking on

• Template cutting edge and projected inner door panel contact edge are flush (6)
• Template markings/cut-outs (5) are flush with relevant hole, screw fixing, reflector, etc.

Repeat preceding operation for other templates (1) if necessary.