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Volkswagen Golf Mk7 Service & Repair Manual: Pre-treatment of bonded surfaces when renewing laser-welded roofs

Using P180-grade sandpaper, this page covers dry-sanding the Volkswagen Golf Mk7 roof and roof pillar bonding surfaces down to bare metal before renewing a laser-welded roof.

Using P180-grade sandpaper, dry-sand cathodic dip primer on bonding surface for roof → Item down to bare metal.
 

Pre-treatment of bonded surfaces when renewing laser-welded roofs

–  Using P180-grade sandpaper, dry-sand bonding surface for roof pillars → Item down to bare metal.
  Note
Prime any bare metal surfaces outside the bonding surface → Item using 2-pack wash primer -LHV 043 000 A2-, and then apply 2-pack HS Performance surfacer.
–  Clean bonding area using silicon remover.
–  Renew roof → Body - centre, roof, frame; Rep. gr.51.
 

Pre-treatment of bonded surfaces when renewing laser-welded roofs

Pre-treatment of bonded surfaces when renewing laser-welded roofs

1 -  2-pack glass adhesive
2 -  Roof
3 -  Glass and paint primer
4 -  2-pack body adhesive
5 -  Roof pillar/side panel
6 -  Area sanded down to bare metal

    Questions & answers

    Pre-treatment of bonded surfaces when renewing laser-welded roofs — Volkswagen Golf Mk7

    How do I prepare bonding surfaces when replacing a Golf Mk7 laser-welded roof?
    Dry-sand the cathodic dip primer to bare metal with P180 sandpaper, then apply the specified primer before bonding.
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