1 Series E81 130i (N52K) 3-door
2. Work materials
-
Gas brazing:
•
Tube pack and torch (gas torch)
•
Brazing solder
•
Gas bottles (oxygen and acetylene)
•
Welding goggles
-
Tinning:
•
Tube pack and torch (torch for tinning)
•
Tinning paste
•
Tin (refer to "Electronic Parts Catalogue" ETK).
•
Gas bottle (acetylene)
•
Protective goggles
3. Preparations for brazing/tinning
-
Heat brazed joints to be opened with an autogenous flame. Lift off remaining metal and remove remaining brazing
solder with a wire brush.
-
Remove the paint and zinc coating in an area of approx. 30 mm around the seam to be soldered.
-
Remove the paint and zinc coating in the tin-plating area and approx. 30 mm beyond.
4. Brazing/tinning
-
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. Straighten, grind and tin visible connection points.
-
Remove burnt paint with a stainless steel wire brush.
RA Welding and soldering steel parts
BMW AG - TIS
22.01.2013 06:25
Issue status (12/2007) Valid only until next DVD is issued
Copyright
Page - 3 -
