41 00... Opening Adhesive Bonds

• Set punch mark in center of weld spot. Set 8 mm dia. weld spot drill bit on punch mark and drill through top metal sheet.

  Or open weld spot with Vario Drill spot welding cutter.

  NOTE: Because the weld spots may have surface-hardened, grind them if necessary with an angle grinder and paper grinding disk.
• Heat connecting flange with a hot air blower.
  CAUTION: Extract vapors and gases.
• Release connection flange with chisel.
• Grind off residual adhesive from connecting flange.
  CAUTION: Wear a grinding dust mask.

• Remove punch rivets or blind rivets, see 41 00... Riveting aluminum parts .
• Roughly cut out damaged component. The component can be peeled with the aid of pliers. If necessary, heat bonding flange with hot air blower.
• CAUTION: Heat only the damaged component with a hot air blower.
  Extract vapors and gases.
• Grind off residual adhesive from connecting flange.
  CAUTION: Wear a grinding dust mask.
• If engine carrier part replacement on the GRAV is carried out repeatedly, cut the damaged part at the existing cutting line. Heat bonding flanges with a hot air blower. Peel off remnants of expander elements with pliers.

Procedure is described in detailed in the relevant repair instructions.