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High-voltage system - General information - Edition 02.2021
Preparing bottom high-voltage battery shell for bonding
NOTICE
♦ Do not perform this work step until shortly after bonding
as the strength of the adhesive on the freshly cut back
adhesive seam is greater.
♦ Once the adhesive bead has been cut back, it must not be
touched or contaminated (grease, sweat etc.).
♦ To prevent damage to the bottom battery shell and to en‐
sure that the new adhesive bead bonds well, the height of
the old adhesive bead should not be less than 1 mm.
– Have a second mechanic monitor the correct height of the
adhesive bead when cutting back.
– Make absolutely sure that scraper, 25 mm -VAS 6900/2- is
kept straight when cutting.
NOTICE
Overlapping and adhesive bead edges from renewed applica‐
tion of the cutter are bad practice.
– Using electric cutter -V.A.G 1561A- and scraper, 25 mm
-VAS 6900/2-, cut back adhesive bead on bottom battery
shell to between 1 and 2 mm.
– If the adhesive seam -arrow- has been cut back too far or
the paint surface is damaged, the adhesive seam must be
completely removed at this point and the paintwork repaired.
– Using a vacuum cleaner with plastic nozzle, clean bottom
battery shell until there are no traces of sealing material and
dirt.
NOTICE
♦ It is extremely important to prevent accidental contact with
the adhesive bead while the top high-voltage battery shell
is positioned so this work step should be practised before‐
hand.
Allow activator to dry 4) before commencing with bonding.
♦
There should be no damp areas.
♦ Since the effectiveness of the activator starts to diminish
significantly after 24 hours, bonding should be carried out
within 2 hours of its application. This also prevents poten‐
tial soiling/contamination.
4) Observe manufacturer's instructions enclosed in the packaging.
6. High-voltage battery
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