Partially prepare upper front longitudinal member - AR62.20-P-1287-02SX

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

The following operation steps are shown on the left component for model 221 and must be performed analogously on the right side in the event of damage.

Grind mating surfaces on upper front longitudinal member (1) down to bare metal in cross-hatched areas with 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.

Fig 1: Not Applying Zinc Dust Paint On Upper Front Longitudinal Member Bonding Areas (A, B And C)
Courtesy of MERCEDES-BENZ USA

Do not apply zinc dust paint to surfaces to be bonded (areas A, B and C).

Observe pretreatment of bonding surfaces.