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Home >> BMW >> 2017 >> M3 Automatic DCT Trans >> Repair and Diagnosis (Single Page) >> Collision >> Body Panels >> Collision - Body Panel Repair (F80) >> 41 12 Floor Panels >> 41 12 700 Replacing Luggage Compartment Floor And Side Member On Left (Left Side Wall And Tail Panel Removed) >> Notes

41 12 700 Replacing Luggage Compartment Floor And Side Member On Left (Left Side Wall And Tail Panel Removed): Notes

Read contents of BODY, GENERAL .

STRIP DOWN  vehicle.

Place vehicle on straightening bench.

IMPORTANT: Observe procedure of REPAIR STAGE 3 .
G10096296Courtesy of BROWN, BOVERI & CO., LTD.

The following new body parts are required (see the applicable BMW parts catalogue):

Following CONSUMABLES  are required:

Material Quantity
Adhesive K5a 2
Blind rivet N3 20
Blind rivet N6 8
EMC screw 7
Cleaning agent R1 1
Sealant D1  

Removal of side member and luggage compartment floor: 

Open welded connections in area (1).

G10096297Courtesy of BROWN, BOVERI & CO., LTD.

Open welded connections in area (1).

G10096277Courtesy of BROWN, BOVERI & CO., LTD.

Mark severance cut (1) next to reinforcement (2) and disconnect.

Open welded connections in area (3).

G10096299Courtesy of BROWN, BOVERI & CO., LTD.

Open welded connections in area (1).

Remove the luggage compartment floor.

G10096300Courtesy of BROWN, BOVERI & CO., LTD.
G13692807Courtesy of BROWN, BOVERI & CO., LTD.

Mark and cut severance cut (1) through 0 20 mm hole.

Cut side member.

Mark severance cut (2) through elongated hole for MAG weld seam and cut.

IMPORTANT: Cut outer panel only.

Open welded connections in areas (3).

Remove side member.

Preparation of new part: 

Mark severance cuts on side members in accordance with severance cuts on vehicle and cut.

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

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

Set 4 4.2 mm 0 bore holes in area (2).

Adjust new parts with alignment bracket or universal mount and in conjunction with side wall and tail panel and secure.

G10096302Courtesy of BROWN, BOVERI & CO., LTD.

In areas (1) to (3), set 0 4.2 mm bore holes for blind rivet N3.

Area Number
1 2
2 3
3 4

If necessary, mark bore holes in area (3) on body and create after removal of new part.

NOTE: Side wall and tail panel have been hidden for clarity.
G10096303Courtesy of BROWN, BOVERI & CO., LTD.
G10096291Courtesy of BROWN, BOVERI & CO., LTD.

In areas (1) to (3), set bore holes 0 4.2 mm for blind rivet.

Area Number Remarks
1 5 Blind rivet N3 
2 6 Blind rivet N3 
3 4 of Blind rivet N6 

Remove new parts and deburr bore holes.

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

Installation of side member and luggage compartment well: 

Install new parts and reinforcement plates with alignment bracket or universal mount and weld analogue to series standard:

G10096305Courtesy of BROWN, BOVERI & CO., LTD.
  1. Extension, bottom side member
  2. Extension, top side member
  3. Luggage compartment well, left
  4. Luggage compartment well

Installation of rear luggage compartment floor and left luggage compartment floor 

Clean all  bonding surfaces with CLEANING AGENT R1 .

Apply adhesive to bonding surfaces.

Install new part and rivet with blind rivets.

When installing the new part, make sure that all bonding surfaces have sufficient adhesive.

G10096295Courtesy of BROWN, BOVERI & CO., LTD.

After hardening of the adhesive install 4 EMC SCREWS  in the areas shown (1).

In area (1) install one EMC screw.

G10096307Courtesy of BROWN, BOVERI & CO., LTD.

In area (1) install two EMC screws.

G10096308Courtesy of BROWN, BOVERI & CO., LTD.