41 00... Soldering Steel Components

WARNING: This page is about a different car, the 2011 BMW M3, 2010 BMW M3, 2009 BMW M3, and 2008 BMW M3. However, it is still accessible from the selected car via links, so may be relevant.

IMPORTANT: Comply with the following topics from "Body, General":
Safety regulations See 4100... SAFETY AT WORK or 4100... INFORMATION ON HAZARDS .
Handling electrical/electronic equipment, airbags and restraint systems See 4100... HANDLING AIRBAGS AND RESTRAINT SYSTEMS or 4100... HANDLING ELECTRICAL AND ELECTRONIC EQUIPMENT .

1. General information

For repair cases the following method will implemented:
- Gas brazing
The MIG soldering procedure is not used in repairs for strength reasons. MIG soldered/brazed seams used in series production are replaced in repairs by MAG weld seams.
Brazed areas from vehicle production are bonded with the same method.

2. Work materials

Tube pack and torch (gas torch)
Brazing solder
Gas bottles (oxygen and acetylene)
Welding goggles

3. Preparation

Remove the paint and zinc coating in an area of approx. 30 mm around the seam to be soldered.

4. Implementation

Execute brazed seam without overheating the solder and with low heat dissipation. If necessary, use heat protecting paste.

5. Subsequent treatment of brazed joints

Remove burnt residual zinc completely. Align and grind visible connection faces.
Remove burnt paint with a stainless steel wire brush.

6. Notes on melting/tinning

Only applicable within the European Union!

European used-car regulations prohibit the use of tin containing lead in motor vehicles introduced after 01.07.2003!

Even out unevenness smaller than 2 mm with filler according to painting handbook

If an exceptional unevenness is larger than 2 mm, use METAL FILLER .

Only perform in visible areas of the outer skin and on the carrier support.

All areas which have covers on the vehicle are not to be processed.