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Home >> BMW >> 2013 >> 740Lxi >> Repair and Diagnosis >> External Pages >> Different car >> Section 479 (Collision - Body Panel Repair (F01, F02)) >> Side Frame And Door Pillars >> 41 21 510 Replacing Front Left Door Post (Front Side Panel Removed) >> New part preparation

New part preparation

WARNING: This page is about a different car, the 2011 BMW 750xi, 2011 BMW 750Lxi, 2010 BMW 750xi, and 2010 BMW 750Lxi. However, it is still accessible from the selected car via links, so may be relevant.

Mark severance cuts on new parts in accordance with severance cuts on vehicle and cut.

Prepare REINFORCEMENT PLATES  at severance cuts.

Adjust new parts to fit with alignment bracket or universal mounting.

Fig 1: Identifying Blind Rivets Bore Holes Dimension And Joint Area
G08505540Courtesy of BMW OF NORTH AMERICA, INC.
NOTE: Joining in area (1) is performed using bonding-riveting technology.
Create bore holes (2) to (3) for blind rivets N7 as per specified dimensions:
  1. (2): Dia. 6.8 mm bore hole in accordance with dimension a = 10 mm from component edge.
  2. (3): Dia. 6.8 mm bore hole in accordance with dimension b = 55 mm from bore hole (2).
    Fig 2: Identifying Blind Rivets Bore Holes
    G08505541Courtesy of BMW OF NORTH AMERICA, INC.

Create bore holes (1) and (2) for blind rivets N1 and N3 in accordance with schematic diagram:

  1. Bore hole dia. 6.8 mm.
  2. Bore holes dia. 4.2 mm.

Transfer bore holes (1) created during removal to new part.

Also drill new part through holes (1) with drill Ø 6.8 mm.

Remove new parts and deburr bore holes.

NOTE: In all further joint areas, prepare new parts and body for joining by welding.
Fig 3: Identifying Bore Holes
G08505542Courtesy of BMW OF NORTH AMERICA, INC.
IMPORTANT: Structure bonding! 
OBSERVE  preparation of bonding surfaces.