Prepare A-pillar closing panel for installation - AR63.20-P-1100-13SX

COMMERCIALLY AVAILABLE TOOLS

Number	Designation
WH58.30-Z-1001-03A	Round wire brush, braided, dia. 70 mm

WORKSHOP EQUIPMENT

WE58.40-Z-1001-03A

Drill (electric/pneumatic)

REPAIR MATERIALS

Number	Designation	Order number
BR00.45-Z-1001-07A	Zinc dust paint suitable for spot welding	A 000 986 34 42

Grind mating surfaces on A-pillar closing panel (1) down to bare metal in cross-hatched areas using round wire brush.
Grind spot weld flanges down to bare metal on both sides.

Fig 1: Identifying A-Pillar Closing Panel Mating Surfaces
Courtesy of MERCEDES-BENZ USA
Using zinc dust paint, coat insides of spot weld flanges that were not additionally bonded.
To prevent adhesion problems, do not coat bonding surfaces with zinc dust paint. (areas A, B and C).

Observe pretreatment of bonding surfaces.
Grind mating surfaces on A-pillar support (2) down to bare metal in cross-hatched areas using round wire brush.
Grind spot weld flanges down to bare metal on both sides.
Using zinc dust paint, coat insides of spot weld flanges that were not additionally bonded.
To prevent adhesion problems, do not coat bonding surfaces with zinc dust paint. (areas D and E).

Observe pretreatment of bonding surfaces.

Fig 2: Identifying A-Pillar Support Mating Surfaces
Courtesy of MERCEDES-BENZ USA
Grind mating surfaces on upper firewall support (3) and lower firewall support (4) down to bare metal in cross-hatched areas using round wire brush.

Fig 3: Identifying Upper And Lower Firewall Support Mating Surfaces
Courtesy of MERCEDES-BENZ USA

Grind spot weld flanges down to bare metal on both sides.
Coat insides of spot weld flanges with zinc dust paint.