BMW 7 Series: Bonding On Painted Surfaces

IMPORTANT: Conform with safety regulations.

Overview of topics

1. Equipment
2. Expiry date of consumables
3. Preparation of surface
4. Bonding coat
5. Hardening times
6. Subsequent treatment
7. Disposing of adhesive

1.0 Equipment

• CLEANER R1
• Adhesive as specified in repair instructions
• CARTRIDGE GUN

2.0 Expiry date of consumables

• Glue cartridge is marked with a date.
• Do not use adhesive after this date.

3.0 Preparation of surface

3.1 Preparation of surface on vehicle

• Establish a level bonding surface (e.g. grinding). Do not remove primer entirely.
• Do not grind/sand bonding surfaces.
• If necessary, pre-clean bonding surfaces with cavity sealing wax remover.

  Clean bonding surfaces with cleaning agent R1.

• Allow cleaned surfaces to dry for approx. 5 minutes.

  Bonding surfaces must be completely dry.

3.2 Preparation of surface on new part

• Do not remove primer.
• Do not grind/sand bonding surfaces.
• Clean bonding surfaces with cleaning agent R1.

  Bonding surfaces must be completely dry.

4.0 Adhesive application

• Processing temperature of glue cartridge 18ºC - 30ºC.
• Object temperature, vehicle and new parts, min. 15ºC.
• Do not use any compressed-air-operated cartridge guns.
• Insert glue cartridge in cartridge gun, remove cap and allow both adhesive components to emerge. Strip adhesive components uniformly and attach mixing tube.
• Allow approx. 10 cm of mixed adhesive to emerge and then apply the mixed adhesive first on one side of the bonding surface.
• After applying the adhesive, check whether an adhesive component has emerged at the back of the cartridge. If yes, break off the bonding procedure. Clean new part. Use new glue cartridge. Contact national hotline.
• Potlife of mixed adhesive approx. 2 hours. A change of mixer is only necessary if over a period of 30 minutes no material has flowed through the mixer.
• Join components and secure in position.
• Remove excess adhesive.

5.0 Hardening times

• Do not move the vehicle before the adhesive has hardened.

  Check the degree of hardness of the adhesive with a fingernail.

  If the adhesive cannot be pressed in any further with a fingernail, the vehicle may be moved (without engine force) for further processing applications (e.g. painting).

• Vehicle strength for driving applications is achieved after: 48 hours at min. 15ºC object temperature (corresponding to approx. 18ºC room temperature).

  or 1 hour in the spray booth (spray booth temperature 80ºC/object temperature 60ºC).

• When using radiant heaters, make sure that the object temperature does not exceed 85ºC.

  Excessively high temperatures will destroy the adhesive.

• Remove contamination caused by adhesive residue immediately.

  Hardened adhesive can only be removed mechanically.

6.0 Subsequent treatment

• Reseal areas which are cavity-sealed as standard.

7.0 Disposing of adhesive

• Hardened adhesive is disposed of as normal waste.
• Empty glue cartridges are disposed of as normal waste.
• Non-hardened adhesives and mixtures of adhesive and solvent and the like must be disposed of as hazardous waste.

These regulations apply to the Federal Republic of Germany.

For other countries, comply with the (possibly differing) nationally applicable regulations.

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