Mercedes-Benz Body & Equipment Guideline for Metris - BM 447, Version November 27, 2015.
!
Please observe the revision notes compared to 09/18/2015 ! Only print out complete sections of the current version!
59
6.3 Corrosion protection measures
6 Damage prevention
Component design measures
Corrosion can be prevented by design measures, in
particular the design of joints between identical or
different materials.
There is a risk of dirt or moisture accumulating in cor-
ners, edges, beads and folds.
Design measures for counteracting corrosion should be
implemented using inclined surfaces and drains, and by
avoiding gaps in the joints between components.
Gaps inherent in the design of welded connections
and how to avoid them
Examples of types of welded connections
A = correct
(through-welded)
B = incorrect
(gap)
Coating measures
The vehicle can be protected against corrosion by
applying protective coatings (e.g. galvanization, paint-
ing, preservation or zinc coating applied by flame)
(
After all work on the vehicle:
•
Remove drilling shavings.
•
Deburr sharp edges.
•
Remove any burned paint and thoroughly prepare
surfaces for painting.
•
Prime and paint all unprotected parts.
•
Preserve cavities with wax preservative.
•
Carry out corrosion protection measures on the
underbody and frame parts.
•
On vehicles with code Z90 (no underbody preserva-
tion), the chassis must be preserved in accordance
with Daimler AG specifications.