41 12 557 Replacing Luggage Compartment Floor, Middle Section (Tail Panel Removed)

WARNING: This page does not describe the selected car, but rather 21 other vehicles, including the 2017 BMW 550i GT xDrive, 2017 BMW 535i GT xDrive, 2017 BMW 535i GT, 2016 BMW 550i GT xDrive, and 2016 BMW 535i GT xDrive. However, it is still accessible from the selected car via links, so may be relevant.

Read contents of BODY, GENERAL .

Observe procedures for (REPAIR STAGE 3) !

STRIP DOWN VEHICLE

Use only approved SPOT-WELDING APPARATUS for repairs.

Following new body parts are required (refer to BMW ELECTRONIC PARTS CATALOGUE ):

(1) Luggage compartment floor, rear
(2) Reinforcement, side member

Following CONSUMABLES are required:

Fig 1: Identifying Luggage Compartment Floor And Reinforcement

Courtesy of BMW OF NORTH AMERICA, INC.

Material	Quantity
Adhesive K5b	1
Blind rivets N3	53
Blind rivets N1	4
EMC screws	2
Cleaning agent R1	1
Sealant D1

Removal of luggage compartment floor

Operation described predominantly on the left side. Right side identical.

View from below.

Open welded connections in areas (1).

Fig 2: Identifying Welded Connections Area

Courtesy of BMW OF NORTH AMERICA, INC.

Fig 3: Identifying Mark Severance Cut Dimension

Courtesy of BMW OF NORTH AMERICA, INC.

Mark severance cut (1) in accordance with dimension a and cut.

IMPORTANT: Cut outer panel only.

Measurement a = 20 mm

Mark severance cuts (2) at component edge and cut.

Open welded connections in areas (3).

Remove trunk floor.

NOTE: The new part is installed overlapping in the areas of the severance cuts.

New part preparation

Mark new luggage compartment floor part in accordance with severance cuts on vehicle + 15 mm extra material and cut.

Flatten stampings (1) on both sides.

Fig 4: Identifying Flatten Stamping Area

Courtesy of BMW OF NORTH AMERICA, INC.

Set down new part in the areas of the overlap.

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

In areas (1) to (3), set 4.2 mm dia. holes for blind rivets.

Fig 5: Identifying Blind Rivets Area

Courtesy of BMW OF NORTH AMERICA, INC.

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 6: Identifying Holes For Blind Rivets Area

Courtesy of BMW OF NORTH AMERICA, INC.

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 7: Identifying Blind Rivets N3 And MAG Welding Areas

Courtesy of BMW OF NORTH AMERICA, INC.

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

Installation of luggage compartment floor

Clean all bonding surfaces with cleaning agent R1.

Apply adhesive to bonding surfaces.

Install new parts and rivet with blind rivets.

Weld new parts in areas (1).

IMPORTANT: Risk of damage!
Avoid applying excessive heat to the neighboring adhesive areas!

Fig 8: Identifying Weld Part Areas

Courtesy of BMW OF NORTH AMERICA, INC.

After hardening of the adhesive install 2 EMC SCREWS in the areas (1).

Fig 9: Identifying EMC Screws Areas

Courtesy of BMW OF NORTH AMERICA, INC.