1 Series E81 130i (N52K) 3-door
41 00 ...
Spot-weld bonding steel parts
Important!
Comply with the following topics from "Body, General":
Safety regulations.
Handling electrical/electronic equipment, airbags and restraint systems.
Welding steel parts.
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The spot-weld bonding process is used starting from the E65 to increase vehicle rigidity. In partial bodywork areas,
a 1-component adhesive is applied to the spot flanges and this is followed by resistance pressure spot welding.
The adhesive is hardened only after the paint drying process (at approx. 180
°
C).
-
In the case of repairs, adhesive is not applied to the spot flanges. The number of welding spots is doubled as a
substitute for the omitted adhesive.
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The following processes are used as a substitute for spot-weld bonding:
•
MAG welding (Metal Active Gas welding)
•
Resistance pressure spot welding (referred to in the following and in the repair instructions as spot welding).
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Adhesive is not applied between the spot flanges on new parts in the case of 2- or multi-sheet joints. Areas which
cannot be reached by the spot-welding tongs can be joined by MAG spot welding. The number of welding spots is
doubled as a substitute for the omitted adhesive.
Exceptions (e.g. E65) are described in the relevant repair instructions. Apply welding spots to existing welding
spots on new part. This is necessary because the adhesive between the spot flanges of the new part acts as an
insulator.
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Caution: Extract smoke and fumes during welding work.
RA Spot-weld bonding steel parts
BMW AG - TIS
22.01.2013 06:24
Issue status (12/2007) Valid only until next DVD is issued
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