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

WARNING: This page does not describe the selected car, but rather 33 other vehicles, including the 2018 BMW M6, 2018 BMW 650i xDrive, 2018 BMW 650i, 2018 BMW 640i xDrive, and 2018 BMW 640i. However, it is still accessible from the selected car via links, so may be relevant.

Observe procedure for repair stage 3. See 41 00 REPAIR TECHNIQUES, REPAIR STAGE 3 .

Read contents of 41 00... 0 CONTENTS OF BODY, GENERAL .

Remove or cover those vehicle components in the repair area which are susceptible to heat or dust.

Strip down vehicle. See 41 12 557 STRIPPING OPERATIONS - REPLACING LUGGAGE COMPARTMENT FLOOR, MIDDLE (TAIL PANEL REMOVED) .

Following new body parts are required (refer to 41 00... OVERVIEW OF CONSUMABLES ):

(1) Luggage compartment floor, rear

Following consumables are required:

Fig 1: Identifying Rear Luggage Compartment Floor

Courtesy of BMW OF NORTH AMERICA, INC.

Material	Quantity
Adhesive K5a	2
Blind rivets N3	25
Cleaning agent R1	1
Sealant D1

Removal of luggage compartment floor

Fig 2: Identifying Luggage Compartment Floor Severance Cutting Dimension

Courtesy of BMW OF NORTH AMERICA, INC.

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

IMPORTANT: Cut outer panel only.
Dimension a = 25 mm from component edge of luggage compartment floor, front.
Open welded connections in area (2).
Remove the luggage compartment floor.

NOTE: New part is installed with overlap in area of severance cut (1).

New part preparation

Mark new luggage compartment floor in accordance with severance cut on vehicle + 20 mm extra material and cut.

Flatten stampings (1) on both sides.

Fig 3: Identifying Flatten Stampings On Both Sides

Courtesy of BMW OF NORTH AMERICA, INC.

Set down luggage compartment well and adjust in combination with cross member and tail panel to fit and secure.

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

Fig 4: Identifying Blind Rivets Bore Holes Areas

Courtesy of BMW OF NORTH AMERICA, INC.

Area	Number
1	8 of
2	5
3	4

Remove new parts and deburr bore holes.

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.

Graphic similar.

Perform MAG welding throughout to new part in area (1).

Set 20 mm MAG welds at a distance of 15 mm in area (2).

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

Fig 5: Identifying Luggage Compartment Floor MAG Welds Areas (Middle)

Courtesy of BMW OF NORTH AMERICA, INC.