Mercedes-Benz Body & Equipment Guideline for Metris - BM 447, Version November 27, 2015.
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Please observe the revision notes compared to 09/18/2015 ! Only print out complete sections of the current version!
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4.7 Threaded and welded connections
4 Planning of bodies
Tack welding
In case of sheet thicknesses > 2 mm, overlapping
sheets may also be joined by tack welding
(30 mm < L < 40e; d > 2L)
[1 1/4 in < L < 40e; d > 2L].
Ratio of sheet thickness to distance between spot
welds
d Distance between tack weld centers
e Sheet thickness
L Length of tack weld
Do not perform any welding work on the following
components:
•
Major assemblies such as the engine, transmission,
axles etc.
•
Chassis, except for frame extensions
i
Additional information
Further information can be found in chapters
5 “Technical threshold values for planning”
(
Page 47) and 6 “Damage prevention”
Page 55) as well as in section 7.2 “Bodyshell/
Corrosion protection after welding
On completion of all welding work on the vehicle, you
must comply with the specified corrosion protection
measures (
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Note
The instructions in chapter 6 “Damage prevention”
(
Page 55) and 7 “Modifications to the basic
Page 61) must also be observed for
welding.