2.2 Aluminium surface
WARNING: This page does not describe the selected car, but rather 31 other vehicles, including the 2015 BMW Alpina B7L, 2015 BMW Alpina B7, 2015 BMW 750i, 2015 BMW 750Li, and 2015 BMW 740i. However, it is still accessible from the selected car via links, so may be relevant.
2.2.1 Procedure for new aluminium component:
- Do not grind/sand bonding surfaces.
Clean bonding surfaces with cleaning agent R1.
- Allow cleaned surfaces to dry for approx. 5 minutes.
Bonding surfaces must be completely dry.
2.2.2 Procedure for previously bonded aluminium component:
- Sand off adhesive residue and layers of paint.
- Clean bonding surfaces with cleaning agent R1.
- Allow cleaned surfaces to dry for approx. 5 minutes.
Bonding surfaces must be completely dry.
- Flame spray the surface:
- Go over the bonding surfaces slowly with the flame.
- Avoid flaming with the blue part of the flame.
- Condensation water appears on the area that is still uncoated. The condensation water in the line of the flame must evaporate completely.
- Directly after flaming, coat the still hot bonding surfaces (approx. 50°C) with primer.
- Apply primer:
- Apply primer with a brush, cotton or similar item.
- Allow the coated surfaces to dry for approx. 5 minutes.