BMW/MINI Bonding Instructions (M3 Base, M3 Competition, M3 Competition M xDrive, M3 CS)

Required Special Tools: 

• 2 357 309

Attention! 

CONFORM WITH SAFETY REGULATIONS! 

INFORMATION ON HAZARDS  .

SAFETY AT WORK  .

1. Brief overview of surface preparation 
   1. Structure 

      Material (surface condition) Type of repair	Preparation
      Aluminum (used part)  Repairs on front end/rear end Example: Replacement of engine mount or front wheel arch	Remove coarse dirt from the bonding surfaces using solvent cleaner R2 Clean with cleaning agent R1 Grind bonding surfaces to a metallic bright-finish Clean with cleaning agent R1 Bond with adhesive K1
      Aluminum (new part)  Repairs on front end/rear end Example: Replacement of engine mount or front wheel arch	Do not  sand bonding surface Remove coarse dirt from the bonding surfaces using solvent cleaner R2 Clean with cleaning agent R1 Bond with adhesive K1
      Carbon Fiber Reinforced Plastic (new part)  Bonding new parts on the body using K1 adhesive in conjunction with blind rivets Example: Replacement of rear wheel arch	Remove coarse dirt from the bonding surfaces using solvent cleaner R2 Clean with cleaning agent R1 Sand with non-woven abrasive Clean with cleaning agent R1 Activate with Betawipe 4800 Bond with adhesive K1
      Carbon Fiber Reinforced Plastic (used part)  Bonding new parts on the body using K1 adhesive Example: Replacement of B-pillar	Remove coarse dirt from the bonding surfaces using solvent cleaner R2 Clean with cleaning agent R1 Sand adhesive residue Clean with cleaning agent R1 Bond with adhesive K1
      Sheet steel (used part and new part)  Partial replacement of components Example: Replacement of B-pillar or rear wheel arch	Remove coarse dirt from the bonding surfaces using solvent cleaner R2 Clean with cleaning agent R1 Grind bonding surfaces to a metallic bright-finish Clean with cleaning agent R1 Bond with adhesive K1

   2. Outer skin (without roof outer skin made of aluminum/CFRP) 

      Material (surface condition) Type of repair	Preparation
      Sheet steel (used part)  Adhesion for outer skin component Example: Replacement of rear quarter panel or tail panel	Remove coarse dirt from the bonding surfaces using solvent cleaner R2 Clean with cleaning agent R1 Grind bonding surfaces to a metallic bright-finish Clean with cleaning agent R1 Bond with adhesive K5
      Sheet steel (new part)  Adhesion for outer skin component Example: Replacement of rear quarter panel or tail panel	Do not  sand bonding surface Remove coarse dirt from the bonding surfaces using solvent cleaner R2 Clean with cleaning agent R1 Bond with adhesive K5

   3. Roof outer skin made of aluminum/CFRP 

      Material (surface condition) Type of repair	Preparation
      Aluminum (new part)  Bonding a roof outer skin made of aluminum	Do not  sand bonding surface Remove coarse dirt from the bonding surfaces using solvent cleaner R2 Clean with cleaning agent R1 Bond with adhesive K2
      Sheet steel (primer undamaged)  Bonding a roof outer skin made of aluminum	Remove coarse dirt from the bonding surfaces using solvent cleaner R2 Clean with cleaning agent R1 Cut back adhesive bead Clean with cleaning agent R1 Bond with adhesive K2
      Sheet steel (primer damaged)  Adhesion for roof outer skin	Remove coarse dirt from the bonding surfaces using solvent cleaner R2 Clean with cleaning agent R1 thin coat with adhesive K1 Bond with adhesive K2
      Carbon Fiber Reinforced Plastic (used part)  Adhesion for roof outer skin	Remove coarse dirt from the bonding surfaces using solvent cleaner R2 Clean with cleaning agent R1 Cut back adhesive bead Clean with cleaning agent R1 Bond with K2/K3 adhesive
      Carbon Fiber Reinforced Plastic (new part)  Adhesion for roof outer skin	Remove coarse dirt from the bonding surfaces using solvent cleaner R2 Clean with cleaning agent R1 Sand with non-woven abrasive Clean with cleaning agent R1 Activate with Betawipe 4800 Bond with K2/K3 adhesive

   1. 2.1 The following basic conditions apply to all bonding: 
      • The working temperature of glue cartridge must be more than 18°C
      • Object temperature, vehicle and new parts, at least 15°C
      • Refer to the vehicle-specific REP for the position and thickness of the adhesive bead
      • After applying the adhesive, check whether an adhesive component has emerged at the back of the glue cartridge. If yes, break off the bonding procedure. Clean new part. Use new glue cartridge
      • Join components and secure in position
      • Remove excess adhesive. Do not use solvent cleaning agents
   2. 2.2 Surface preparation (structural): 
      1. 2.2.1 Flame-coating (aluminum): 
         • Clean bonding surfaces with cleaning agent R1
         • Remove oxide layers or paint from bonding surfaces using a stainless steel wire brush or sandpaper with 120 graining
         • Clean bonding surfaces with cleaning agent R1

         Allow cleaned surfaces to dry for approx. 5 min

         Bonding surfaces must be completely dry

      2. 2.2.2 Surface preparation (Carbon Fiber Reinforced Plastic new part): 

         This surface preparation applies to new CFRP parts

         Remove coarse dirt from the bonding surfaces using solvent cleaner R2

         Clean bonding surfaces with cleaning agent R1

         Bonding surfaces with sanding using non-woven abrasive

         Clean bonding surfaces with cleaning agent R1

         Let cleaned bonding surfaces dry for at least 2 min

         Bonding surfaces must be completely dry

         Activate bonding surfaces with Betawipe 4800

         Let activated bonding surfaces dry for at least 2 min

         Bonding surfaces must be completely dry

      3. 2.2.3 Surface preparation (Carbon Fiber Reinforced Plastic used part): 

      This surface preparation applies to the top area of the B-pillar

      Attention! 

      Carbon Fiber Reinforced Plastic component not damaged!

      Components must be replaced if showing signs of damage

      Remove coarse dirt from the bonding surfaces using solvent cleaner R2

      Clean bonding surfaces with cleaning agent R1

      Grind off adhesive residue to a thickness of approx. 0.5 mm

      Clean bonding surfaces with cleaning agent R1

      Let cleaned bonding surfaces dry for at least 2 min

      Bonding surfaces must be completely dry

   3. 2.3 Surface preparation (outer skin (without roof outer skin)): 

      The procedure is described here

   4. 2.4 Surface preparation (roof outer skin): 
   1. 2.4.1 Surface preparation of roof frame and convertible top bow from sheet steel: 

      Courtesy of BMW OF NORTH AMERICA, INC.

      WARNING: Injury hazard by the sharp edge of the scraper!

      Cut back adhesive remnants (1) with scraper 2 357 309 to a minimum of 0.5 mm

      Primed surface must not be damaged

      Smaller damage to 5 mm or scratch marks can be ignored

      In the event of larger damage to primer (greater than 5 mm), proceed as follows:

      Clean damaged area with cleaning agent R1

      Apply K5 adhesive to the bare areas using a spatula or (fine) brush. Apply a uniformly thin layer (max. 0.5 mm). After a curing period of 24 hours, the roof outer skin can be bonded

      The adhesive flange area must not be painted over when the roof frame is being repaired or replaced

   2. 2.4.2 Surface preparation of Carbon Fiber Reinforced Plastic (used part): 
      WARNING: Injury hazard by the sharp edge of the scraper!

      Remove coarse dirt from the bonding surfaces using solvent cleaner R2

      Clean bonding surfaces with cleaning agent R1

      Cut back adhesive bead with scraper 2 357 309 to a minimum of 0.5 mm

      Clean bonding surfaces with cleaning agent R1

      Let cleaned bonding surfaces dry for at least 2 min

      Bonding surfaces must be completely dry

   3. 2.4.3 Surface preparation of Carbon Fiber Reinforced Plastic (new part): 

   Prepare the surface as described under point 2.2.2