5.4 Corrosion protection
5.4.1 General information
Avoid drilling into enclosed frame vehicle parts to avoid the risk of corrosion from chips.
However, if drilling is required:
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After cutting or drilling, deburr before repainting to protect against corrosion.
Repaint metal edges and protect from corrosion after cutting or drilling operations.
Attempt to remove and treat all chips from inside the side support to prevent corrosion.
Apply corrosion protection inside and outside the chassis frame if the coating has been damaged by drilling or welding.
In regions where salt is used to de-ice road surfaces, it may be necessary to reapply cavity wax to the inner frame section that was
damaged by drilling or welding.
5.4.2 Touching up damaged paintwork
After cutting or reworking sheet metal on the vehicle, the damaged paint must be touched up/repaired.
Ensure that all materials are compatible with the relevant Volkswagen specifications , and try to maintain the original condition as far as
possible.
Warning note
Surfaces of components such as brakes or catalytic converters
must not be painted over or contaminated.
5.4.3 Underseal and materials
Make sure that all materials used comply with Volkswagen specifications and try to maintain the original condition as far as possible. Some
manufacturer-specific products will affect the original finish. The specifications for corrosion protection materials can be obtained from
your Volkswagen Commercial Vehicles partner or importer.
5.4.4 Painting road wheels
Warning note
Do not paint any surfaces that are in contact with wheels,
brake drums or brake discs, hubs and holes or surfaces under
wheel nuts. Any further treatment in these areas may
adversely affect the performance of the wheel clamp and the
safety of the vehicle. Cover the wheel when changing the
paint or touching up paint.
5.4.5 Galvanic (bi-metallic) corrosion / contact corrosion
If materials with different electrochemical potential come into contact with each other, take appropriate measures to isolate the electrical
contact by using an insulating material.
Volkswagen Commercial Vehicles – Body builder guidelines – February 2023 edition
The new Amarok – Page 149 of 166
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