1 Series E81 130i (N52K) 3-door
41 00 ...
Corrosion protection
Note:
Following repairs, the corrosion protection work already begins with the correct removal of the PVC
undercoating, antinoise compound and seam seals.
1.0 Removing sealing materials:
Important!
-
Do not burn off PVC material with a gas burner or similar or heat to temperatures above 180
°
C. This
would generate highly corrosive hydrochloric acid and release harmful fumes.
-
The new lining does not form a satisfactory bond with burnt PVC material which means that subsequent
sub-surface rust may set in.
Remove PVC material with a rotating steel brush, or heat PVC to maximum 180
°
C with a hot air blower and scrape
off with a spatula.
2.0 Corrosion protection of sheet-metal parts:
All weld joints sealed off with body sealing compound in original state must be primed and sealed off again thoroughly
after repairing. Replace damaged or removed antinoise compounds.
Note:
Spray gun required for body sealing compound (order no. 81 49 0 300 887).
Concluding cavity protection is the most important part of all corrosion protection measures.
Use the cavity protection spray only for smaller-scale straightening work where the parts in question are easily
accessible. Use the HRS spray gun with pressure container for all other repairs. Cavity protection agent is available in
different container sizes.
Use the relevant probes with tubes for the different cavity areas.
Required tools are featured on the Workshop Equipment Planning CD (WEP).
See also Aftersales Assistance Portal (ASAP) - Service/Technology - Workshop Equipment (Start BMW) - Shop
Workshop Equipment
Important!
Incorrectly performed cavity protection can, especially in the case of steel/aluminium joints, give rise to a non-
calculable product liability and safety risk.
The best repair is worth nothing if the subsequent cavity protection measures are not conscientiously carried out.
2.1 Cavity protection of steel parts:
New doors and lids must be sealed with cavity protection agent after being painted.
New sheet-metal parts or cavities, weld seams and folds formed by new sheet-metal parts must be sealed with cavity
protection agent after being painted.
The cavities affected must be sealed with cavity protection agent after all straightening work.
2.2 Cavity protection of aluminium parts:
New doors, lids and side panels made of aluminium are not sealed with cavity protection agent.
After all straightening work on aluminium components, the cavities affected must be sealed with cavity protection agent
RA Corrosion protection
BMW AG - TIS
22.01.2013 06:17
Issue status (12/2007) Valid only until next DVD is issued
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