New part preparation

WARNING: This page is about a different car, the 2013 BMW 550i GT, 2012 BMW 550i GT, 2011 BMW 550i GT, and 2010 BMW 550i GT. However, it is still accessible from the selected car via links, so may be relevant.

Luggage compartment floor, left:

Mark severance cut (1) in accordance with severance cut on vehicle + 15 mm extra material and cut.

Mark severance cut (2) in accordance with severance cut on vehicle and cut.

Open weld joints in area (3) and remove sheet section.

Fig 1: Identifying Left Luggage Compartment Floor, Severance Cut And Welded Joint Areas

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Luggage compartment floor, right:

Mark severance cut (1) in accordance with severance cut on vehicle + 15 mm extra material and cut.

Mark severance cut (2) in accordance with severance cut on vehicle and cut.

For all severance cuts on side members, prepare REINFORCEMENT PLATES .

Adjust new parts to fit with alignment bracket or universal mount and secure.

Fig 2: Identifying Right Luggage Compartment Floor And Severance Cut

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Flatten stamping in area (1) on both sides.

Fig 3: Identifying Luggage Compartment Floor Stamping Areas

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Luggage compartment floor, middle:

Mark severance cuts on new part in accordance with severance cuts on vehicle + 20 mm extra material and cut.

Set down new part in the areas of the overlap.

Adjust luggage compartment floor in combination with cross member and tail panel fit and secure.

In areas (1) to (3), set 4.2 mm diameter bore holes for blind rivets N3:

Fig 4: Identifying Middle Luggage Compartment Floor Blind Rivets N3 Bore Holes Position

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Area	Number
1	8
2	5
3	6

In areas (1) and (2) set 4.2 mm dia. holes for blind rivets.

Area	Number
1	2
2	7

Fig 5: Identifying Blind Rivets Holes Areas

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In areas (1) and (2) set holes for blind rivets.

Area (1): 2 bore holes with dia. 6.8 mm for blind rivets N1 .

Areas (2): in each case 4 bore holes with dia. 4.2 mm for blind rivets N3 .

Prepare new parts for MAG welding in areas (3).

Remove new parts and deburr bore holes.

Fig 6: Identifying Blind Rivets Holes Areas And MAG Welding Areas

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IMPORTANT: Do not grind new parts and body in area of bonding surfaces.