Volkswagen Passat 1995 Official Factory Repair Manual page 3866

Flush-bonded windows
http://ebahn.bentleypublishers.com/vw/servlet/Display?action=Goto&type=repair&id=VW.B4.BD01.64.1
Undamaged rear window, preparing for
installation
Note:
When re-using an undamaged window, cut back
remaining adhesive sealer -1- shortly before re-use to
1 - 2 mm using electric cutter with blade VAG1561/10
and stop roller. Be careful not to damage pre-coating
and lip with spacer rib -2-.
Do not damage spacer rib -1- and ceramic coating -2-
.
CAUTION!
Do not prime adhesive surfaces, do not activate
and do not treat with cleaning solution. Keep
adhesive surfaces clean from dirt and grease.
Exception: If adhesion is not done immediately after
cutting back, the residual adhesive must be activated
with activator AMV 181 800 02.
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12/7/2004